BACKGROUND OF THE INVENTION

1. Field of the Invention.

The present invention is a collapsible frame for weight lifters. Weight lifting has

become a popular recreational activity for a large number ot people. In the past, most people

have had to go to a gym or other facility where, for a fee, the strong equipment necessary to

hold the weight bar in a ready position could be used. Also, in order to exercise all muscle

groups, different pieces of equipment were needed for different exercises. The cost of all

necessary weight lifting equipment was prohibitive for an individual for home use.

More particularly, the present invention relates to weight lifting frames which are

portable and, thus, suited for use in situations where exercise space is limited, or a permanent

weight lifting rack is not available, such as in home environs. Further, the present invention

teaches a portable and collapsible weight frame which can be disassembled into easily storable

metal components.

2. Descπption of the Related Art.

Pπor art home equipment for weight lifters has two major disadvantages. First, in order

to minimize space requirements and weight, home systems often compromised the range of

muscle groups that could be exercised, making a compact, but incomplete system. Further,

prior art home systems tended to be lighter in weight and thus less stable than gym equipment,

with the πsk that the frame will tip over when a heavy weight is held on the frame several feet

from the floor with a high center of gravity. The πsk of injury to the weight lifter was

substantial.

None of the collapsible weight-lifting frames known to the inventor address the

problems solved by the present invention, that is, providing a frame for weight lifters that is

portable and partially collapsible, simple to use, safe to use alone, and which can withstand

usage of very heavy weights without distressing or destabilizing the frame.

SUMMARY OF THE INVENTION

The primary object of the present invention is to provide a collapsible frame for weight-

lifters comprised of metal components, which is safe to be used alone while weight-lifting.

The present invention provides a collapsible frame for weight lifters, comprising a long

pair of vertical support members, each vertical support member having an upper and lower end,

a short pair of vertical support members, each vertical support member having an upper and

lower end, a rear removable horizontal support member rigidly secured between the long pair of

vertical support members, a front removable horizontal support member rigidly secured

between the short pair of vertical support members, a pair of adjustable side support members,

each of the adjustable side support members in selectably rigid securement with one member of

the long pair of vertical support members and one member of the short pair of vertical support

members, direct the long vertical support member at an angle towards the short vertical support

member, a safety zone in the interior of the frame, defined by the rear vertical support members

and the rear and adjustable side horizontal support members, and means at the upper ends of the

long pair of vertical support members to safely support a weight bar. Whereby, the center of

gravity of the weighted frame is always within the safety zone.

The above and yet further objects and advantages will become apparent from the

hereinafter set forth Brief Description of the Drawings, Detailed Description of the Invention,

and Claims appended herewith.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of as adjustable side support member being πgidly secured

into one each of the long and short pair of vertical support members.

Fig. 3 is a side view of the adjustable side support member.

Fig. 4 is a side view of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

The present invention is a collapsible weight-lifting frame, as shown in Fig. 1 , designed

to disassemble into metal rods, yet, assemble into a weight-lifting frame weighing only 35 kg,

yet having sufficient strength to support a static load of weights in excess of 500 kg. More

particularly, as seen in Fig. 1 , the portable frame is compπsed of a rear pair ot vertical support

members 10 and 1 1 , and front pair of vertical support members 12 and 13 The front pair of

vertical support members 12 and 13 are embodied as shown being substantially shorter than the

rear pair of vertical support members 10 and 1 1. This gives the user the advantage of easily

placing the weight bar 30 onto the weight bar holding means 28 and 29 at the upper ends of the

rear pair ot vertical support members 10 and I I from the front, without having to lift the bar

itself over the rear support members. For most weight lifters, the satisfactory lengths of the

rear pair of vertical support members 10 and 1 1 should be 6 feet, and the front pair of vertical

support members 12 and 13 should be about 4 feet.

The pair of rear vertical support members 10 and 1 1 and tront pair of vertical support

members 12 and 13 are steel channels, square in shape, approximately 2 inches by 2 inches in

dimension. To allow for adjustment, members 10, 1 1 , 12 and 13 have spaced holes 26 drilled

throughout their lengths approximately 2 to 3 inches apart. The holes 26 allow for the

removable and adjustable attachment of the side support members 14 and 17, without

comprising rigidity or strength.

While any configuration may be used to support weights up to 500 kg, I prefer to use

rolled steel, bent .and welded to form hollow channels for the support members. For vertical

members 10, 11 , 12 and 13, I prefer 2 inch square cross-section channels. For horizontal

support members, I prefer 2 inch by 1 inch hollow channels, without holes drilled throughout

their lengths.

Channels of different shapes, such as round or hexagonal cross-section may be used as

well. Of course, aluminum or magnesium may be used for lighter weight, but I have found

steel to be most cost effective. Titanium has greater tensile strength and would create and even

stronger frame, however, the cost of manufacture may offset the strength advantage. Even with

steel, the frame is very light, about 35 kg, yet will be able to support about 15 times its own

weight in static load.

Several frames in the prior art teach the use of feet on vertical support members for added stabilization. The present invention does not need feet as it is adequately stable as

discussed herein. Furthermore, the use of feet may be injurious to the user who may trip over

the feet while using the frame, and the feet also may detract from the stabilization created by the

angling of the vertical members discussed herein. Accordingly, while the present invention may

be embodies with feet at the bottoms of the vertical support members, it is not recommended.

The frame also has a rear horizontal support member 20 which laterally braces the rear

pair of vertical support members 10 and 1 1. In Fig. 1 , the rear horizontal support member 20

has angular supports 22 and 23 additionally attaching the rear horizontal support 20 and to the

rear pair of vertical supports 10 and 1 1. This allows for increased lateral strength, and also

allows the rear pair of vertical supports 10 and 1 1 to be slightly angled towards each other. The

angle 24 is in a range from 2 to 6 degrees from a plumbline A towards the other member of the

rear pair of vertical support members 10, with 4 degrees being optimum

When the rear horizontal support member 20 is lower than the weight bar holding means

28, it adds to the structural stability of the frame as the slight angle causes the weight bar 30 to

be supported by the tπangular structure defined by the rear vertical support member, the rear

horizontal support member and the angular support. The tπangular structure can support more

weight safely, instead of solely the rear vertical support members.

However, the rear hoπzontal support member 20 may be placed at the upper end of the

rear vertical support members 10 and 1 1 . This placement is recommended if the frame does not

use a front hoπzontal support member 16 as having the rear hoπzontal support member 20 at

the upper ends of the vertical support members 10 and 1 1 greatly increases the πgidity of the

rear vertical support members 10 and 1 1 to compensate for the lack of the front hoπzontal

support member 16.

As shown in Fig. 4, The rear horizontal support member 20 is πgidly affixed to the

rear pair of vertical support members 1 and 1 1 though the use of bolts, either slotted-head bolts

34, or through the use of wing-nut bolts 46 in Fig. 4. While bolts are the preferred

embodiment, any means which could selectively attach the hoπzontal support members may be

used.

As shown in Fig. 1 , the frame also has a front hoπzontal support member 16 with

angular supports 18 and 19 attached to the front pair of vertical support members 1 1 .and 12. A

front hoπzontal support member adds to the structural rigidity of the frame, although, the frame

may be embodied without a front hoπzontal support member

The front horizontal support member 16 is substantially similar to the rear horizontal support member in construct, method of attachment and function, except that it should be

attached to the front pair of vertical support members 12 and 13 at a point sufficiently low to

allow the user to step over it to easily enter the frame. Also, a typical weight bench may be

placed over the front horizontal 16 support member so that a user can perform exercises using

the bench within the frame, thereby having the safety benefits of the frame as the pair of

adjustable side horizontal support members 14 and 17 prevent any dropped weight from injuring

the user or falling to the floor.

The rear and front horizontal support members 20 and 16 should be between 4 and 6

feet in length, however, their length is to be governed by the length of weight bars to be rested

upon the frame. It is recommended that rear vertical support members 10 and 1 1 be 6 feet in

length and the front vertical support members 12 and 13 be 4 feet in length.

The adjustable side horizontal support members 14 and 17, as seen in Fig. 3, have a pair

of legs 38 and 39. The legs 38 and 39 are rigidly affixed to the side support member 14 by

means of a plate 15. Pegs 36 and 37 on side insert into the evenly spaced holes on the vertical

support members. The legs 38 and 39 have spring detents 40 and 41 which engage the desired

holes on the front and rear vertical support members 12 and 10. The plates 15 are rigidly bolted

44 to the adjustable side horizontal support member 14 and add greater strength to the support

by increasing load bearing strength. This spreads the force over a length of the vertical support

member rather than on the pegs 36 and 37.

The adjustable side horizontal support members 14 and 17 are preferably between 2 to 4

feet in length, although, the length is to be governed by desired exercise regimen and storage

characteristics.

As seen in Fig. 2, in operation, pegs 36 and 37 of the adjustable side horizontal support

member 14 slide into the evenly spaced holes of rear vertical support member 10 and front

vertical support members 12, causing the legs 38 and 39 to slide into contact with the each of

the vertical support members such that the spring detents 40 and 41 engage the evenly spaced

holes, securing the adjustable side horizontal support member.

The pegs 36 and 37 are angled downwardly in a range between 20 and 30 degrees, with

24 degrees being optimal. At 24 degrees, pegs 36 and 37 to hold the adjustable side horizontal

support member 14 in zero tolerance with the front and rear vertical support members 10 and

12. This rigidity is enhances with the extra resistance created by the legs 38 and 39 and the

engagement of the spring detents 40 and 41.

Further, the adjustable side horizontal support members 14 hold the rear pair of vertical

support members 10 and 1 1 and front vertical support members 12 and 13 at angle towards the

front, as shown in Fig. 4. The angle 42 is measured in a range between 1 and 10 degrees from

a plumbline B to front vertical support member 13. It is recommended that the pair of

adjustable side horizontal support members 14 give the front pair of vertical support members

12 and 13 a forward angle, parallel to angle 42. Angle 42 allows the center of gravity to shift

towards the center of the frame, giving greater structural rigidity. This prevents the frame from

being tipped over when weights are placed at the upper end of the rear pair of vertical support

members 10 and 1 1.

The rear vertical support members 10 and 1 1 could have a bend through their middle

towards the interior of the frame to achieve the same shifting of the center of gravity.

However, such a bend causes the vertical support member to lose some of its structural integrity

and therefore, it is not recommended to use such a bend. With the slight angling of the vertical

support member as disclosed, the objects of the invention are achieved while minimizing the

risk of destabilization due to any bending in the vertical support members.

When constructed with the inward angle 24, the center of gravity of the frame is shifted

towards the center of the frame, creating a safety zone. The safety zone is defined between the

adjustable side horizontal support members 14 and 17, and rear horizontal support member 20.

The safety zone is further defined by the front horizontal support member 16 when present,

thus, completely enclosing the safety zone to the interior of the frame. The safety zone enjoys

the benefit that any weight bar dropped will either deflect on the angled rear vertical support

members 10 and 1 1 or fall across the adjustable side horizontal support members 14 and 17.

Further, any weight which may fall from the weight bar will fall outside of the frame.

The portable frame for weight lifters may also have a wire 32 attached to the lower ends

of one member of the rear pair of vertical support members and front vertical support members,

as seen in Figs. 1 and 4. The wire 32 prevents the vertical support members from slipping

away from each other and possibly causing the detents in the adjustable side horizontal support

members 14 and 17 to dislodge from the vertical support members. If embodied with the

forward angle 42, then the wire 32, or comparable means, should be used to insure the safety of

the frame as their is a greater risk of such slippage.

The means for safely holding a weight bar is embodied here as being angled pegs 28 and

29 inserted through the holes at the upper end of the long pair of vertical support members 10,

as seen in Figs. 1 and 4. Alternatively, one may use hooks or any other means which allows

the weight bar 30 to be inserted into the members 10 and 1 1 , such that the bar 36 will not roll

out and fall.

While there has been shown the preferred .and alternate embodiments of the present

invention, it is to be understood that the invention may be embodied otherwise that is herein

specifically shown and described, and that within said embodiments, certain changes may be

made in the form an arrangements of the parts without departing from the underlying ideas or

principles of this invention as set forth in the Claims appended herewith.