| US1190421A | 1916-07-11 | |||
| US20040144593A1 | 2004-07-29 |
CLAIMS
1. It is a prismatic perpendicular ladder; that all surfaces are in closed prismatic structure, that there exist platforms A and B (4, 5), one for each foot, each of which is larger than a foot, on one side of prismatic structure, that there exist telescopic steps (10 ,11, 12), ordered from inside to outside, inside the prismatic structure and under the platforms, that there exist direction handles (34), which are used to control ascending and descending, on each platform, that there exist two foot nests (1), into which feet can be put, and which keep feet stick to the platforms after taking step on them, on the platforms, that there exist hanging mechanism, which elevates the user by choosing direction to which he wants to move by using direction handle, and returns him to the lowest position of ladder by choosing descending direction.
2. According to Claim 1, it is prismatic perpendicular ladder and its property is; that ascending and descending direction of the user makes 90 degrees with floor.
3. According to Cairn 1, it is prismatic perpendicular ladder and its property is; that it is easy to carry, and that it has a prismatic shape so that it needs little area to be stored when it is not necessary to be used.
4. According to Claim 1, it is prismatic perpendicular ladder and its property is; that it has prismatic box handle (3) to carry whole prismatic structure by hand.
5. According to Claim 1, it is prismatic perpendicular ladder and its property is; that it can be climbed up by movements of normal walking and stair climbing, and that it makes easy to stay in balance while ascending and descending, and that there exist two platforms, which are larger than feet and are parallel to floor, ensuring to use tools and implements over it.
6. According to Claim 1, it is prismatic perpendicular ladder and its property is; that platform A (4) and platform B (5), over which user can put his feet, are independent form each other, and that they are only directly connected with their own inner steps (8). 7. According to Claim 1, it is prismatic perpendicular ladder and its property is; that the area of each platform is larger than the foot size, and the total area of two platforms is smaller than the bottom are of the ladder or equal to it.
8. According to Claim 1, it is prismatic perpendicular ladder and its property is; that there exist one foot nest (1), into which the front end of foot can enter and fixes foot, at the outside of prismatic structure.
9. According to Calim 1, it is prismatic perpendicular ladder and its property is; that the shape of foot nest (1) makes easy to put on and take out of foot, in order to make wandering over platform easy, while neither ascending or descending. lO.According to Claim I 1 it is prismatic perpendicular ladder and its property is; that there exist direction handle (34), which is at the outside of the prismatic structure, to provide selection the directions of steps either upward or downward direction, and there exist direction handle fixer (2) to fix the direction handle (34) providing vertical and parallel movement flexibility over platform, and that there exist direction tambour cord (33), which fastens direction tambour (32) to inner hanging rods so that provides them with flexibility to move upward and downward along long axel of inner hanging rods, and that there exist direction tambour (32), which controls the direction of hanging mechanism through touching hanging clappers of inner hanging rods. ll.According to Claim 1, it is prismatic perpendicular ladder and its property is; that there exist hanging rods comprising of hanging rod A plane (35), hanging rod B plane (36), hanging rod C plane (37), hanging rod pin stopper (38).
12.According to Claim 1, it is prismatic perpendicular ladder and its property is; that there exist individually complete and compact steps that are formed by vertical hanging rods, of which lower ends form a plane when they are connected with a line, by being fastened with hanging rod cord (9), and that they are strong enough to carry load.
13.According to Claim 1, it is prismatic perpendicular ladder and its property is; that there exist outer step that is formed by fastening outer hanging rods with hanging rod cord (9), and that there exist middle step that is formed by fastening middle hanging rods with hanging rod cord (9), and that there exist inner step that is formed by fastening inner hanging rods with hanging rod cord (9). 14.According to Claim 1, it is prismatic perpendicular ladder and its property is; that there exist outer hanging rod cords (13), which are belong to both platforms, fastening outer hanging rods next to each other.
15.According to Claim 1, it is prismatic perpendicular ladder and its property is; that there exist hanging rod jut (14) that allows hanging rods, which are under the same platform and belong to different steps, to move vertically in parallel to each other, but obstruct the horizontal disconnection of them, and that there exist hanging rod next (15). lδ.According to Claim 1, it is prismatic perpendicular ladder and its property is; that there exist hanging rod stopper of platform A (16), which ensures that upward movement of inner hanging rod of platform B (5) takes place after the inner hanging rods of platform A (4), and the upward movement of middle hanging rods of platform B (5) takes place after middle hanging rods of platform A (4), and that there exist hanging rod stopper of platform B (17), which ensures that upward movement of middle hanging rods that are next to inner hanging rods of platform A (4) takes place after the inner hanging rods of platform B (5), and the upward movement of middle hanging rods of platform A, which are at outside in compare to platform B, takes place after inner hanging rods. 17.According to Claim 1, it is prismatic perpendicular ladder and its property is; that there exist a compact structure comprising of telescopic steps under both platform, and that each of this structures have its own direction tambour (32), and that there exist hanging mechanism with which direction tambour (32) have contact, and that one of the two basic parts with which two platforms have contact is outer hanging rod cord (13) and the others are hanging rod stoppers of
Platforms A and B (5), and in addition, that each structure under each platform compose a compact unit. lδ.According to Claim 1, it is prismatic perpendicular ladder and its property is; that it is possible to increase the maximum height of the ladder by increasing the number of middle steps (7) which are located between inner step (8) and outer step (6). 19.According to Claim 1, it is prismatic perpendicular ladder and its property is; that the inner, middle and outer steps (6,7,8) located under each platform are vertically on the same level with the hanging rod cords located at the other side where other platform is located, and that they are ordered as, from top to down, as hanging rod cords (9) of inner, middle and outer steps (6,7,8) so that they obstruct middle step (7) the lower end of inner step not to be lower than the outer step
(6) lower end of middle step.
20.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, while ascending, steps in the prismatic structure, for each platform, starting from innermost step, rise one step high each time up to the level required, and, while descending, again starting form innermost step, go down. 21.According to Claim 1, it is prismatic perpendicular ladder and its property is; that it has hanging mechanism comprised of hanging clapper (18), upper pin (19), lower pin (20), hanging mechanism pin (21), hanging lever (22), upper pin bed (23), lower pin bed (24) clapper spring (25), clapper spring lower handle (26), clapper spring upper handle (27), outer spring (28), inner spring (29), lower spring (30), upper pin claw, which ensures, after upward movement direction being selected with direction handle (34), without doing anything manually, upward movement starts and continues, and, similarly, after downward movement direction being selected with direction handle (34), without doing anything manually, downward movement starts and continues.
22.According to Claim 1, it is prismatic perpendicular ladder and its property is; that it has hanging mechanism that ensures the user, while walking up over steps, to pull platform A up (4), by means of foot in the foot nest (1), and to keep it in hanging position at one step high, only by bending knee backward, in vertical position, and by bending hip joint forward, and that ensures the user to pull up platform B (5) to the level of platform A (4), during the body is raising up over platform A (4), by means of foot in foot nest (1) mounted on platform B (5) by bringing knee and hip joint to the position of standing up, and that, by repeating this movements, ensures the user to climb up to all existing steps other than outer step (6), and that ensures the user to bring platform B (5) down in an amount of one step high, choosing descending direction using direction handle (34), at any level he wants, by pulling his foot in foot nest (1) mounted on platform B (5) as possible as high and then by loosing his knee and hip joint, and that ensures the user to bring platform A (4) to the level of platform B (5) which is down one step high, and that, by repeating this movements, ensures the user to return to the lowest level. 23.According to Claim 1, it is prismatic perpendicular ladder and its property is; that it materializes the first order action, while descending, with the upward movement of the foot that will go down, by means of foot nest (1), by pulling related step that carries the load upward while keeping related platform, at that level, in hanging position, and that, in connection with this, upper pin claw (31), by being released from the upper edge of A plane of hanging rod, which comes next at the outside, releases upper pin (19) and make possible downward movement of the step, and that, by pushing hanging clapper (18) of hanging rod, which comes next at the outside, of related step, make loose hanging rod to move downward.
24.According to Claim 1, it is prismatic perpendicular ladder and its property is; that the steps are located under the same platforms interacts each other, and that the steps are located under the different platforms do not interact each other except hanging stopper of platform A (4) and hanging stopper of platform B (4), but that outermost steps (6) of both platforms are fastened to each other by outer hanging rod cord (13), and that inner steps are free to move up and down.
25.According to Claim 1, it is prismatic perpendicular ladder and its property is; that there exist hanging clapper (18) that moves at same direction and same amount with hanging lever (22) by means of hanging mechanism pin (21) when it is pushed by direction tambour (32) downward.
26.According to Claim 1, it is prismatic perpendicular ladder and its property is; that it has hanging mechanism pin (22) connecting hanging clapper (18) to hanging lever passing through B plane. 27. According to Claim 1, it is prismatic perpendicular ladder and its property is; that it has hanging lever (22), which has two ends that end on lower and upper pins (19), that is fastened to hanging clapper (18) by means of hanging mechanism pin (21), and that is located, by taking center the hanging pin's end at the side where B plane is connected with A plane, in parallel to long axel of B plane, in a way its lower and upper pins (19) are located between B plane and its own.
28.According to Claim 1, it is prismatic perpendicular ladder and its property is; that it has upper pin bed (23) that ensures upper pin (19) slide perpendicularly to long axel of B plane, in a way of, approaching and moving away to/ from A plane.
29.According to Claim 1, it is prismatic perpendicular ladder and its property is; that it has lower pin bed (24) that ensures lower pin (20) slide perpendicularly to long axel of B plane, in a way of, approaching and moving away to/ from A plane. 30.According to Claim 1, it is prismatic perpendicular ladder and its property is; that it has a clapper spring (25) that, which is a drawing spring, that pulls hanging clapper toward upper end of B plane. 31.According to Claim 1, it is prismatic perpendicular ladder and its property is; that it has a clapper spring upper handle (27) that fixes one end of clapper spring (25) at the side of upper end of B plane and at the side where B plane is connected to C plane. 32.According to Claim I 1 it is prismatic perpendicular ladder and its property is; that it has a clapper spring lower handle (26) that fixes one end of clapper spring (25) at the side of upper end of B plane and at the side where B plane is connected to C plane.
33.According to Claim 1, it is prismatic perpendicular ladder and its property is; that it has an outer spring (28) that, which has also property of being a drawing spring, fastens one end of upper pin
(19) at a farther point of A plane and the end of hanging rod (22) at the side of upper pin (19) to each other. 34.According to Claim 1, it is prismatic perpendicular ladder and its property is; that it has an inner spring (29) that, which has also property of being a drawing spring, fastens one end of upper pin
(19) at a closer point of A plane and the end of hanging rod (22) at the side of upper pin (19) to each other.
35.According to Claim 1, it is prismatic perpendicular ladder and its property is; that it has a lower spring (30) that, which has also property of being a drawing spring, fastens one end of lower pin
(20) at a closer point of A plane and the end of hanging rod (22) at the side of lower (20) to each other.
36.According to Claim 1, it is prismatic perpendicular ladder and its property is; that it has an upper pin claw spring (31), which is located at lower side of the farther end of A plane and ensures an outer hanging rod (10) hook up to upper edge of A plane.
37.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, being pushed by C plane downward, when hanging mechanism is in locked position, hanging clapper (18) direction tambour (32) or an inner hanging rod (12) and lower pin (20) enters below the lower end of A plane of outer hanging rod and obstructs its own hanging rod move upward comparing to hanging rod next to it at outer side, and, when it is in this position, clapper spring (25) is fully stretched, lower spring (30) is not stretched, inner spring (29) is slightly pressurized, and outer spring (28) is slightly stretched. 38.According to Claim 1, it is prismatic perpendicular ladder and its property is; that direction tambour (32) or C plane of an inner hanging rod (12) moves upward and cuts the connection with hanging clapper (18), and the clapper spring (25), by shrinking, causes to pull the end of hanging rod (18), to which it is connected, upward, and, as a result of this, the lower pin (20) moves toward A plane of hanging rod, to which it belongs, and protrudes out below the lower end of A plane of hanging rod, which is next to it at outer side, and upper pin (19) gets in touch with it by moving toward A plane of hanging rod, which is next to it at outer side, and, in this position, clapper spring (25) is not stretched, lower spring (30) is not stretched, inner spring (29) is stretched and outer spring is slightly pressurized.
39.According to Claim 1, it is prismatic perpendicular ladder and its property is; that the lower end of one hanging rod, by approaching to upper en of hanging rod, which is next to it at outer side, enters between upper end of A plane of outer hanging rod of upper pin (19), which belongs to it, and pin stopper (38), causes to terminate the upward movement of hanging rod comparing to hanging rod, which is next to it at outer side, and, in this position clapper spring (25) is not stretched, lower spring (30) is not stretched, inner spring is not pressurized/ stretched, and outer spring is not pressurized/ stretched.
40.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when the lower end of a hanging rod is closer to upper end of the hanging rod, which is next to it at outer side, and it enters between upper end of A plane of hanging rod, which is next to it at outer side, of upper pin (19), which belongs to it, and pin stopper (38), by being pushed down by hanging clapper (18) direction tambour, which belongs to it, or C plane of any hanging rod (12), upper pin claw (31) hooks up A plane of hanging rod, which is next to it at outer side, and the lower pin (20) gets in touch with A plane of hanging rod, which is next to it at outer side, and, in this position, clapper spring (25) is stretched, lower spring (30) is stretched, inner spring is pressurized (29) and outer spring is stretched. 41.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when lower end of a hanging rod is close to upper end of hanging rod, which is next to it at outer side, by the upper pin claw (31) being unhooked, upper pin (19) moves toward A plane of the hanging rod, which belongs to it, and stops reaching balance, and, in this position, clapper spring (25) is stretched, lower pin (30) is stretched, inner spring (29) is slightly pressurized, and outer spring (28) is slightly stretched.
42.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when an end of any hanging rod, by moving downward, reaches with the same level of lower end of hanging rod, which is next to it at outer side, lower pin (20) enters below the lower end of A plane of hanging rod, which is next to it outer side, and returns to locked position, and, in this position clapper spring (25) is fully stretched, lower spring (30) is not stretched, inner spring (29) is slightly pressurized, and outer spring (28) is slightly stretched.
43.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when the user moves direction handle (34) upward, by bringing direction handle fixer (2) to perpendicular position to the platform, direction tambour (32) cuts its contact with hanging clappers of inner hanging rods.
44.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, with the direction tambour (32) cuts its contact with inner hanging rods, the clapper springs pull, by shrinking, the ends where hanging clappers are fastened, and lower pins of (20) inner hanging rods protrude out below the lower edge of A plane of middle hanging rods, and inner hanging rods are unlocked.
45.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, although inner hanging rods belonging platform A (4) are free to move upward when their locks are unlocked, hanging rod stoppers of platform A (4) can obstruct the upward movement of inner hanging rods of platform B (5).
46.According to Claim 1, it is prismatic perpendicular ladder and its property is; that the user can move inner step of platform A (4) upward by pulling his foot over platform A (4) upward by means of foot nest (1) when inner hanging rods of platform A (4) are free to move. 47.According to Claim 1, it is prismatic perpendicular ladder and its property is; that the upward movement of the step stops when the upper pin (19) of inner hanging rods of platform A (4) enters between pin stoppers of middle hanging rods of platform A (4) and A planes. 48.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when the user step on the inner step of platform A (4), upper pin (19) of inner hanging rods of platform A leans against upper edge of A plane of middle hanging rods of platform A (4).
49.According to Claim 1, it is prismatic perpendicular ladder and its property is; that upper pin (19) of inner hanging rods obstruct downward movement of inners step of platform A (4) and platform A stays in hanging position at one step high when middle hanging rods of platform A (4) leans against upper edge of A plane of middle hanging rods.
50.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when the user elevates on inner step of platform A (4), and pulls up inner step of platform B (5), inner step of platform B (5) moves upward.
51.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when upper pin (19) of inner hanging rods of platform B (5) enters between pin stopper of middle hanging rods of platform B (5) and A planes, upward movement of the step stops.
52.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when the user steps on the inner step of platform B (5), the upper pin (19) of inner hanging rods of platform B (5) leans against upper edge of A plane of middle hanging rods of platform B (5), and, in this situation, the user is in a position of standing up as both platforms are side by side.
53.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, during taking up the first step, inner hanging rods cut their contacts with hanging clappers of middle hanging rods of C planes, and in connection with this, lower pins (20) of middle hanging rods protrude out below the lower ends of A planes of outer hanging rods and the locks of middle hanging rods are unlocked.
54.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when lower pins of middle hanging rods protrude out below the lower ends of A plane, and the locks of middle hanging rods are unlocked, in order to take the second steps, the user pulls his foot on the platform A upward, and, by means of foot nest, pulls inner step of platform A (4) and, in connection with this, also pulls middle hanging rods that are connected, with upper pins (1), to inner hanging rods of platform A (4).
55.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when the upper pin (19) of middle hanging rods of platform A (4) enters between pin stoppers of outer hanging rods of platform A (4) and A planes, upward movement of the step stops. 56.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when the user steps on middle step of platform A (4) upper pin (19) of middle hanging rods of platform A (4) leans against upper edge of A plane of outer hanging rods of platform A (4).
57.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, while the user is elevating on the middle step of platform A (4), he also pulls middle step of platform B (5) upward, and upper pin (19) of middle hanging rods of platform B (5) enters between pin stoppers of outer hanging rods of platform B (5) and A plane, and upward movement of the step stops. 58.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when the user steps on the inner step of platform B (5), the upper pin (19) of middle hanging rods of platform B (5) leans against outer edge of A plane of outer hanging rods of platform B (5) and, in this situation, the user is in a position of standing up as both platforms are side by side. 59.According to Claim 1, it is prismatic perpendicular ladder and its property is; that on the ladder having more than one middle steps (7), elevating mechanism of each middle step are the same. βO.According to Claim 1, it is prismatic perpendicular ladder and its property is; that there are spaces, which are longer than the length of upper pin claw (31) on vertical axel, between hanging rod stoppers of platform A (4) that is located over inner hanging rods of platform A (4) and inner hanging rods of platform B (5), and between hanging rod stoppers of platform B (5) that is located over inner hanging rods of platform B (5) and middle hanging rods of platform A (5), and between hanging rod stoppers of platform A (4) that is located over middle hanging rods of platform A (4) and middle hanging rods of platform B (5), and these spaces allow, during descending, platform B
(5) to rise, comparing to platform A (4), as much length of upper pin claw (31) as on vertical axel. δl.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when the user pushes the direction handle (34) downward in order to go down, direction tambour (32) get touches with hanging clappers of inner hanging rods, and although the free ends of hanging clappers are pushed downward, since upper pin claw (31) are hooked to upper edge of A plane of hanging rod which is next to it at outer side, upper pin (19) keeps its hanged position.
62.According to Claim I 7 it is prismatic perpendicular ladder and its property is; that, since stoppers of inner hanging rod (12) of platform A (4) are hooked to platform B (5), inner step of platform B (5) can move downward.
63.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when the user pulls his foot that is attached to platform B (5) by means of foot nest (1) upward, upper pin claw (31) gets free, and, as a result of that the upper pin is pulled toward A plane of its own hanging rod by inner and outer springs (28), inner step of platform B gets out of hanging position. 64.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when the inner and middle steps of platform B (5) come to side by side, and the inner hanging rods come to contact with the hanging clappers of middle hanging rods of C planes, and, although the free ends of hanging clappers are pushed downward, since upper pin claw (31) are hooked to upper edge of A plane of hanging rod which is next to it at outer side, upper pin (19) keeps its hanged position. 65.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when the user pulls his foot, while standing on platform B on other foot, that is attached to platform A (4) by means of foot nest (1) upward, upper pin claw (31) gets free, and, as a result of that the upper pin is pulled toward A plane of its own hanging rod by inner and outer springs (28), inner step of platform A (4) gets out of hanging position.
66.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when the inner and middle steps (7) of platform A (4) come to side by side, and the inner hanging rods come to contact with the hanging clappers of middle hanging rods of C planes, and, although the free ends of hanging clappers are pushed downward, since upper pin claw (31) are hooked to upper edge of A plane of hanging rod which is next to it at outer side, upper pin (19) keeps its hanged position.
67.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when both platforms and inner and middle steps (7) of platforms come to side by side, inner hanging rods are fastened to middle hanging rods by means of lower pins (20) of inner hanging rods. 68.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when the user pulls his foot, while standing on platform A (4) on other foot, that is attached to platform B (5) by means of foot nest (1) upward, platform B (5) makes move upward the middle hanging rods, which are attached to it by means of lower pins (20) of inner hanging rods, and, in connection with this, upper pin claw (31) of middle hanging rod (11) is unhooked form between upper edge of A plane of outer hanging rod (10) and pin stopper (38). 69.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when platform
B (5) comes out of hanging position, and middle hanging rods of platform B (5) and outer hanging rods come side by side, lower pins (20) of middle hanging rods enter below lower edges of A planes of outer hanging rods and become fixed.
70.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, when the user pulls his foot, while standing on platform B (5) on other foot, that is attached to platform A (4) by means of foot nest (1) upward, and, in connection with this, platform A (4) makes move upward the inner hanging rods, which are attached to it by means of lower pins (20) of middle hanging rods.
71.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, as a result of upper pin claw (31) of middle hanging rod is unhooked from between upper edge of A plane of outer hanging rod (10) and pin stopper (38) in connection with that middle hanging rods move upward, platform A (4) comes out of hanging position, and middle hanging rods of platform A (4) and outer hanging rods come side by side, and lower pins (20) of middle hanging rods enter below lower edges of A planes of outer hanging rods and become fixed. 72.According to Claim 1, it is prismatic perpendicular ladder and its property is; that, after the user step on the platforms A and B, which are one step high, of prismatic perpendicular ladder, he pulls up direction handles in order to start upward movement, and can stop this upward movement, which is started with platform A (4), at any step level he wants.
73.According to Claim 1, it is prismatic perpendicular ladder and its property is; that the user finishes up his downward movement, which is started at platform B (5) by pushing down the direction handle (34), at original positions of platforms A and B, which are one step high. |
PRISMATIC PERPENDICULAR LADDER
This innovation is associated with a portable ladder, which is placed on a platform and, over which can be moved up by making just stepping up movements,
Common portable ladders have one or two stringers and rigid or elastic elements, which have function of being steps σr handholds, or elements onto or into which foot can be put, between or on these stringer/ stringers. Stringers of same portable ladders are designed as pliable or telescopic so that some parts of stringers can enter into others. Although stringer/ stringers of some, ladders should be leant against somewhere to mate them stable, some others have additional stringer/ stringers countering primary stringer/ stringers. On some ladders, there exist platforms fixed over stringer/ stringers, over which one can be stood up. Generally, common portable ladders can be classified as those of which stringers make 90° and as those of which stringers make less than 90° with floor. Those of which stringers make 90° with floor should be placed either on a platform as fixed, or should be hanged or attached to somewhere. Those of which stringers make less than 90° with floor should be leant against somewhere or countering stringer.
In order to climb up these ladders, user should make a climbing move in addition to normal stepping up movement. During this movement, user should hold on to somewhere, at least with one hand, in order to protect his balance. In addition, not everyone who can walk under normal conditions and walk up over fixed stairs may climb up these kinds of ladders. Since these ladders are portable, it is difficult to keep them irt balance. During both ascending and descending, additional effort should be spent to stay in balance. After being climbed up those common ladders, user can not stand up over generally flat and wide piatform white he is carrying out his job. In order to stand up, it is needed to spent additional effort. White standing over known portable ladders, additional mechanism other than normal components of ladder is needed to put tools and implements on.
Since common portable ladders need a stringer, and this stringer has a certain length, and it is rigid, they occupy a certain area even if it is pliable or telescopic, and carrying them is difficult. In order to keep the center of gravities of common ladders in balance, the surface on which they stand occupies quite large area.
With this innovation, it is intended to make carrying portable ladder easy, to reduce their volume during transportation, to eliminate need for additional effort to stay in balance during climbing, to
reduce area needed to use them, to make easy to use them for everyone who can walk under normal conditions and walk up over stairs, to eliminate balance problem over them, to make easy using of tools and implements over them, and to eliminate the need for erecting them in order to use.
Prismatic perpendicular ladder that has been developed in order to materialize the purpose of the innovation has been shaped up as is seen from the figures attached;
Figure 1. Suitcase shaped, closed view of prismatic perpendicular ladder.
Figure 2. Unfolded view of prismatic perpendicular ladder in which all steps are hanging. Figure 3. General view of step structure of a platform.
Figure 4. General overview of step structures of both platforms.
Figure 5. Detailed overview of internal structures of both platforms
Figure 6. Lateral views of direction tambour, hanger rods and hanger joints.
Figure 7. View of hanger rods and direction tambour in hanging position. Figure 8. View of hanging mechanism
Figure 9. View of hanging mechanism in locked position.
Figure 10. View of unlocked position of hanging mechanism.
Figure 11. View of transition of hanging mechanism into hanging position.
Figure 12. View of hanging mechanism that is in hanging position. Figure 13. View of hanging mechanism being stretched to come out of hanging position.
Figure 14. View of disengagement position of upper pin claw of hanging mechanism.
Figure 15. View of hanging mechanism coming out of hanging position and coil spring release.
Figure 16. View of transition of hanging mechanism into locked position.
Figure 17. View of prismatic perpendicular ladder in which its direction handle is not pulled up. Figure 18. View of prismatic perpendicular ladder in which direction handle is pulled up but step has not taken.
Figure 19. View of prismatic perpendicular ladder in which platform A is raised one step up.
Figure 20. View of prismatic perpendicular ladder in which its first step has been taken.
Figure 21. View of prismatic perpendicular ladder in which Platform A is raised two steps up. Figure 22. View of prismatic perpendicular ladder in which its second step has been taken.
Figure 23. View of prismatic perpendicular ladder in which its direction handle is not pulled down.
Figure 24. View of prismatic perpendicular ladder in which its direction handle is pulled down.
Figure 25. View of prismatic perpendicular ladder in which Platform B comes one step down.
Figure 26. View of prismatic perpendicular ladder in which Platform A comes one step down.
Figure 27. View of prismatic perpendicular ladder in which Platform B comes two steps down. Figure 28. View of prismatic perpendicular ladder in which Platform A comes two steps down.
The parts in figures are numbered and meaning of those numbers are given below. 1) Foot nest
2) Direction handle fixer
3) Prismatic box handle
4) Platform A
5) Platform B 6) Outer step
7) Middle step
8) Inner step
9) Hanging rod cord
10) Outer hanging rod 11) Middle hanging rod
12) Inner hanging rod
13) Outer hanging rod cord
14) Hanging rod jut
15) Hanging rod nest 16) Platform A hanging rod stopper
17) platform hanging rod stopper
18) Hanging clapper
19) Upper pin
20) Lower pin 21) Hanging mechanism pin
22) Hanging lever
23) Upper bin bed
24) Lower pin bed
25) Clapper spring 26) Clapper spring lower handle
27) Clapper spring upper handle
28) Outer spring
29) Inner spring
30) Lower spring
31) Upper pin claw
32) Direction tambour
33) Direction tambour cord
34) Direction handle 35) Hanging rod A plane
36) Hanging rod B plane
37) Hanging rod C plane
38) Pin stopper
Prismatic perpendicular ladder has prismatic external appearance and comprises of steps that are telescopic in structure. One of the two larger faces of the prismatic structure is the one that touches floor, and there are functional elements on upper face and one of the side faces. On the upper faces, there are 2 foot nests (1) that user of the ladder can insert his feet into, two direction handle fixers (2) for each platform that are used in order to select either ascending or descending direction, and that fastens upper mechanism to platform and ensures it to stay either upright or horizontal position. On one of the side faces, there is prismatic box handle that is used to carry ladder when it is packaged up.
Upper face comprises of two platforms. Platform A (4) is the one that its movement upright is independent. Platform B (5) is the one that its movement is dependent on Platform A. There are outer, middle and inner steps (6, 7, 8) that one enter into other under both of these platforms.
The outermost step is called outer step (6) and comprises of outer hanging rods (10) that are connected to each other with hanging rod cord (9). The step between outer and inner steps is called middle step (7), and comprises of middle hanging rods (11) that are connected to each other with hanging rod cord (9). The innermost step is called inner step (8), and comprises of inner hanging rods (12) that are connected to each other with hanging rod cord (9).
The hanging rod cords, which are at the side where Platform A and Platform B come into contact with each other, are placed at the same level vertically but at different planes, as is seen at Figure 3, so that the hanging rod cord connecting the inner step hanging rod are at the top, and the hanging rod cord connecting outer step hanging rod at the bottom. The hanging rod cords, which are at the side where Platform A and Platform B have no contact, connect hanging rods to each other, and that are placed, as is seen at Figure 3, at the same level vertically but at different planes.
As is seen from Figures 4, 5, 6, and 7, outer hanging rods, which are at the side where Platform A and Platform B are in touch with each other, are connected to each other with outer hanging rod cord (13). Hanging rods, hanging rod jut (14), and hanging rod nest (15) that comprise of inner, middle and outer steps belonging to same platform slide, side by side, in parallel to each other, through long axel as seen from Figures 6 and 7.
As is seen from Figures 5 and 6, Platform A hanging rod stopper (16), which is placed on hanging rods of inner step, obstructs the upright movement of hanging rods of inner steps of Platform B, and Platform B hanging stopper (17), which is placed on hanging rods of inner step of Platform B obstructs the upright movement of hanging rods of middle step of Platform A. Platform A hanging rod stopper, which is placed on hanging rods of middle step of Platform A obstructs the upright movement of hanging rods of middle step of Platform B. This mechanism puts in order the upright movement of steps as inner step of Platform A, inner step of Platform B, middle step of Platform A, middle step of Platform B. Outer steps never loose their contacts with floor.
Inner hanging rods comprising of inner step can stay as pendant to middle hanging rods comprising of middle step, which belongs to the same platform and have contact, and the middle step hanging rods comprising of middle step can stay as pendant to outer hanging rods comprising of outer step, with which have contact. There is not any hanging mechanism on hanging rods comprising of outer step.
As is seen at Figures 8 and 9, hanging mechanism is comprised of hanging clapper (18), upper pin (19), lower pin (20), hanging mechanism pin (21), hanging lever (22), upper pin bed (23), lower pin bed (24), clapper spring (25), clapper spring lower handle (26), clapper spring upper handle (27), outer spring (28), inner spring (29), lower spring (30), upper pin claw (31).
As is seen at Figures 4, 5, 6 and 7, direction tambour (32) exists inside of the inner steps. Direction handle (34) drives direction tambour and hanging clapper of inner step of related platform. This motion directs the step both up and down. Direction tambour cord (33) fasten up direction tambour and allows it to move in parallel along with long axis of related inner hanging rod. Direction handle is fastened to platform with direction handle fixer. Direction handle is used to choose the direction to where ladder will advance. There are one direction tambour under each platform and one direction handle fixer on each of them. Each hanging rod of each direction tambour has one direction tambour cord, one direction handle and one direction handle fixer connected to it.
As is seen from Figure 6, hanging rods consist of 4 basic parts; A plane A (35), B plane B (36), C plane C (37) and pin stopper (38). A plane A is shorter than B and C planes on vertical axel. On vertical axel, it ends at a point that is higher than the lower limits of B and C planes. The shortness in question at the vertical axel and the lower end form a space so that lower pins of hanging rod inner side can enter into. A plane is also shorter than these two planes at upper end on vertical axel. A plane is plane that touches to lower and upper pins of inner hanging rod. B plane is a plane over which hanging mechanism takes place, and it has same length with C plane on vertical axel. C plane is a plane to which hanging mechanism clapper of outer hanging rod touches and where there exist hanging rod stoppers of Platform A and B. Pin stopper is in the same position with A plane, and it is a stick staying on A plane. Between A plane and pin stopper, there exist a space larger than that is formed by upper pin and pin claw together. This space is big enough so that upper pin and upper pin claw can be easily inserted through horizontal axel. Pin stopper is mounted at B plane at same angle with A plane on vertical axel. Pin stopper obstructs upward movement of hanging rod through being hooked by upper pin of hanging rod which is a part of hanging mechanism.
Hanging mechanism is nested at the lower end of B plane. As is seen from Figure 8, the hanging mechanism pin, which is a part of hanging mechanism, connects the hanging clapper, which is at surface of B plane that is connected to C plane, with the hanging lever, which is at the surface of B plane that is connected to A plane. Hanging mechanism pin ensures the hanging lever rotate, at the same direction and same amount, by way of rotational movement of hanging clapper of hanging mechanism. Hanging lever extends at two directions taking hanging mechanism pin as central point, one end of the lever has connection with upper pin and the other end with the lower pin. Upper pin moves in upper pin bed, and lower pin moves in lower pin bed. Hanging clapper is connected to B plane with clapper spring. Clapper spring pulls the free end of hanging clapper towards upper end of long axel of B plane so that it moves away C plane. This move causes the hanging clapper on inner hanging rod to touch to direction tambour, and causes hanging clapper on middle hanging rod to touch with C plane of inner hanging rod. Clapper spring is connected to hanging clapper with clapper spring lower handle, and to B plane with clapper spring upper handle. The connection between hanging lever and upper pin is done with two springs. Outer spring pulls upper end of hanging lever toward the upper pin's end at the side of C plane or pushes it at opposite direction. Inner spring pulls same end of hanging lever toward the upper pin's end at the side of A plane or pushes it at opposite direction. Although inner and outer springs are compression type springs, they have also resistance to stretching. Hanging lever is connected to lower pin with lower spring. Lower spring connects the
end of hanging lever at the side of lower pin to the end of lower pin at the side of A plane. Clapper spring is the strongest one among all springs. The other springs are at equal mightiness. Clapper spring and lower spring are the extensions springs that only grow longer by being stretched.
As is seen from Figure 9, hanging mechanism, when it is locked, is pushed downward by hanging clapper direction tambour or C plane of inner hanging rod, and lower pin penetrates below the lower end of A plane of hanging rod of which one end protrude outside, and obstruct the hanging lever to move upward comparing to hanging rod of which one end extend outside. In this position, clapper spring is fully stretched, lower spring is not stretched, inner spring is pressed, and outer spring is slightly stretched.
As is seen figure 10, that direction tambour or C plane of any inner hanging rod terminates its contact, through moving upward, with hanging clapper causes that clapper spring shrinks and draws connected end of hanging clapper upward. As a result of this, lower pin moves toward A plane of its hanging rod, and gets out through below the lower end of A plane of hanging rod. Upper pin moves toward A plane of any outer hanging rod and gets the position of contacting it. In this position, clapper spring is not stretched, lower spring is not stretched, inner spring is stretched and outer spring is slightly pressurized.
As is shown in Figure 11, in the case that the lower end of any hanging rod approaches to upper end of outer hanging rod and it enters between upper end of A plane of outer hanging rod and pin stopper causes to terminate its upward movement comparing to outer hanging rod. In this position, clapper spring is not stretched, lower spring is not stretched, inner spring is not pressurized/ stretched and outer spring is not pressurized/ stretched.
As is shown in Figure 13, when the lower end of any hanging rod is close to the upper end of outer hanging rod, and it penetrates between upper end of A plane of outer hanging rod and pin stopper, if it is pushed downward by direction tambour or C plane of inner hanging rod, then upper pin claw (31) is hooked up A plane of outer hanging rod. The lower pin contacts with A plane of outer hanging rod. In this position, clapper spring is stretched, lower spring is stretched, inner spring is pressurized, and lower spring is stretched.
As is shown in Figure 15, when lower end of any hanging rod is close to upper end of outer hanging rod, if upper pin claw is unhooked, upper pin moves toward A plane of its hanging rod, and stops
when it reaches to balance. In this position, clapper spring is stretched, lower spring is stretched, inner spring is pressurized, and outer spring is slightly stretched.
As is shown in Figure 16, when any hanging rod moves downward and its lower end comes to the same level with the lower end of outer hanging rod, then the lower pin penetrates below lower level of A plane of any outer hanging rod. In this position, clapper spring is fully stretched, lower spring is not stretched, inner spring is slightly pressurized, and inner spring is slightly stretched.
The person who uses prismatic perpendicular ladder brings direction handle fixer, which is on the ladder, to vertical position and put his feet into foot nests that are on the platform. In this position, hanging mechanisms' of inner hanging rods are locked.
As is seen from the Figure 17, when the person moves direction handle upward, the direction tambour terminates its touch with hanging clappers of hanging rods. Clapper spring pulls upwards the ends of hanging clappers by shrinking, and as a result of this, lower pins of inner hanging rods, protrude out below the lower edges of A planes of middle hanging rods and the locks of inner hanging rods is unlocked as is seen in Figure 10. Although inner hanging rods of Platform A are free to move upward since their locks are unlocked, hanging rod stoppers of A platform obstruct inner hanging rods of Platform B to move upward.
Because of inner hanging rods are allowed to move upward, the person makes move inner step of platform A upward by pulling up his foot, by way of foot nest, on the platform A. When upper pin of inner hanging rods of platform A enters between pin stoppers of middle hanging rods of platform A and A planes, as is seen at figure 11, the upward move of step stops. When the person steps on the inner step of platform A, as is seen at Figure 12, the upper pin of inner hanging rods of platform A leans against upper edge of A plane of middle hanging rods of platform A. This position obstructs downward move of inner step of platform A, and platform A, as is seen at Figure 19, stays up as one step high.
As the person elevates over the inner step of platform A, he pulls up the inner step of platform B upward. Since hanging rod stoppers of platform A, which obstruct upward move of inner hanging rods of platform B, move upward, this obstruction is already removed. So, it makes inner step of platform B move. When upper pin of inner hanging rods of platform B enters between pin stoppers of middle hanging rods of platform B and A planes, the upward move of the step stops. When the person steps on inner step of platform B, as is seen at Figure 12, upper pin of inner hanging rods of
platform B leans against upper edge of A plane of middle hanging rods of platform B. In this case, the person, as is seen at Figure 20, remains standing in a position in which both platforms are side by side.
While the first step is being taken up, C plane of inner hanging rods cuts the connection between middle hanging rods and hanging clappers. As a result of this, lower pins of middle hanging rods protrude out below the lower ends of A planes of outer hanging rods, and locks of middle hanging rods, as is seen at Figure 10, get unlocked. In this case, when the person who gets on the ladder pulls up his leg on platform A in order top take the second step, pulls, by means of foot nest, inner step of platform A and middle hanging rods upward, which are connected to inner hanging rods of platform A by means of upper pins, as is seen at Figure 11. When upper pin of middle hanging rods of platform A enters between pin stoppers of outer hanging rods of platform A and A planes, as is seen at Figure 11, upward move of step stops. When the person steps on the middle step of platform A, upper pin of middle hanging rod s of platform A leans against upper edge of A plane of outer hanging rods of platform A, as is seen at Figure 12.
While the person elevates on the top of the middle step of platform A, he also pulls middle step of platform B upward. When upper pin of middle hanging rods of platform B enters between outer hanging rod pin stoppers and A planes, upward move of the step stops. When the person steps on the middle step of platform B, upper pin of middle hanging rod s of platform B leans against upper edge of A plane of outer hanging rods of platform B. In this case, the person, as is seen at Figure 22 remains standing in a position in which both platforms are side by side.
Elevating mechanism of each middle step of higher ladders that have more than one step will be the same.
There is a space that is little bit bigger than upper pin claw at vertical axel between hanging rod stoppers of platform A that are on the inner hanging rods of platform A and inner hanging rods of platform B, and between hanging rod stoppers of platform B that are on the inner hanging rods of platform B and middle hanging rods of platform A, and between hanging rod stoppers of platform A that are on the middle hanging rods of platform A and middle hanging rods of platform B. This space allows that the platform B can elevate, during descending, as much as the length of upper pin claws on vertical axel comparing the platform A.
When the person moves the direction handle downward in order to descend, direction tambour get touch with hanging rod clappers of inner hanging rods and pushes disengaged ends of hanging clappers downward. However, as is seen at Figure 13, since upper pin claws is hooked at upper edge of A plane of outer hanging rod, upper pin keeps its hanging position.
Since the inner hanging rod stoppers of platform A will be obstructed by platform B, primarily the inner step of platform B can be moved downward. When the person moves his foot in the foot nest upward, as is seen at Figure 14, upper pin claw gets disengaged, and upper pin is pulled by inner and outer springs toward A plane of its own hanging rod, and, as is seen at Figure 15, inner step of platform B gets out of hanging position.
When inner and middle steps of platform B arrive to same level, C planes of inner hanging rods get touch with hanging clappers of middle hanging rods, and pushes disengaged ends of hanging rods. However, as is seen at Figure 13, since upper pin claws is hooked at upper edge of A plane of outer hanging rod, upper pin keeps its hanging position.
When the person moves his foot in the foot nest upward, as is seen at Figure 14, upper pin claw gets disengaged, and upper pin is pulled by inner and outer springs toward A plane of its own hanging rod, and, as is seen at Figure 15, inner step of platform A gets out of hanging position.
When inner and middle steps of platform A arrive to same level, C planes of inner hanging rods get touch with hanging clappers of middle hanging rods, and pushes disengaged ends of hanging rods. However, as is seen at Figure 13, since upper pin claws is hooked at upper edge of A plane of outer hanging rod, upper pin keeps its hanging position.
When both platform and inner and middle steps of these platforms arrive to same level, as is seen at Figure 26, inner hanging rods are in a position of being fixed to middle hanging rods by means of upper pins of inner hanging rods. After setting foot platform A, the person moves his foot that is in the foot nest on platform B upward, and then platform B sets in motion inner hanging rods that are connected to itself and inner hanging rods sets in motion middle hanging rods that are fastened to them by means of lower pins upward. In connection with this, upper pin claws of middle hanging rods, as is seen at Figure 14, departs from between upper edge of A plane of outer hanging rods and pin stopper. Platform B gets out of hanging position, and when middle hanging rods and outer
hanging rods of platform B arrive to same level, lower pins of middle hanging rods enter below the lower edges of A planes of outer hanging rods and become fixed.
After setting foot platform B, the person moves his foot that is in the foot nest on platform A upward, and then platform A sets in motion inner hanging rods that are connected to itself and inner hanging rods sets in motion middle hanging rods that are fastened to them by means of lower pins upward. In connection with this, upper pin claws of middle hanging rods, as is seen at Figure 14, departs from between upper edge of A plane of outer hanging rods and pin stopper. Platform A gets out of hanging position, and when middle hanging rods and outer hanging rods of platform A arrive to same level, lower pins of middle hanging rods enter below the lower edges of A planes of outer hanging rods and become fixed.
When the person get his position on platforms A and B, which are one step high, of prismatic perpendicular ladder, pull direction handles upward in order to move upward, and terminates his move that is started at platform A at any step level or uppermost step level. Later, by pushing direction handle downward, he descends and terminates his move that is started at platform B and returns to his original position on platforms A and B which are again one step high.