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Title:
WHEELED SNOW PUSHER
Document Type and Number:
WIPO Patent Application WO/2003/066969
Kind Code:
A1
Abstract:
This invention refers to a manual operated snow pusher, consisting of a shovel provided with several wheels and a handle. It earlier exists two types of wheel provided snow shovels. The first type is preventing the leading edge from engaging the surface frictionally. The disadvantage with this type of shovel is that it leaves a layer of snow left on the ground. The second type has the wheels behind the shovel to support the load. This type of shovels requires a fairly flat surface to work properly. This invention solves both those problems. The wheels are mounted with their rolling surface parallel to the shovels slipping surface and in rows that are parallel with the shovel's application direction. This embodiment makes it possible to move the shovel on both dry surfaces as on ice and deep snow. This without leaving a gap of snow left on the cleaned surface.

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Inventors:
Simonsson, Rutger (Emblavägen 13, Djursholm, S-182 67, SE)
Application Number:
PCT/SE2003/000191
Publication Date:
August 14, 2003
Filing Date:
February 05, 2003
Export Citation:
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Assignee:
Simonsson, Rutger (Emblavägen 13, Djursholm, S-182 67, SE)
International Classes:
E01H5/02; (IPC1-7): E01H5/02; A01B1/02
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Claims:
CLAIMS
1. A snow pusher device, comprising: a) a scoop (1) for carrying the snow ; b) a handle (2) extending from said scoop; c) several wheels (3) attached to the said scoop, characterised of that the wheels (3) are mounted so that their rolling surface follows the said scoops slipping surface on a definite distance; and that the wheels (3) are mounted after each other, in a row, which direction forms an angle between 0 degrees and 15 degrees with the shovels application direction.
2. A snow pusher device according to claim 1, characterised of that the wheels are mounted in several rows.
3. A snow pusher device, comprising : a) a scoop (1) for carrying the snow b) a handle (2) extending from said scoop ; c) several wheels (3) attached to said scoop, characterised of that the wheels (3) are mounted so that their rolling surface and the scoops slipping surface forms an angle between 0 degrees 10 degrees ; and that the wheels (3) are mounted after each other, in a row, which direction forms an angle between 0 degrees and 15 degrees with the shovels application direction.
4. A snow pusher device according to claim 3, characterised of that the wheels are mounted in several rows.
5. A snow pusher device according to any of the previous claims, characterised of that one or several wheels (3) have a width that exceed its diameter.
Description:
WHEELED SNOW PUSHER FIELD OF INVENTION This invention relates to a manual operated snow pusher consisting of a shovel, a handle and several wheels.

PRIOR ART A numerous of innovations for wheeled snow shovels and snow pusher have been provided in the prior art that will be described. Even though if these innovations may be suitable for the specific individual purpose to which they address, however, they differ from the present invention.

Prior art manually operated snow shovels have used wheels to aid the person pushing a load of snow along a horizontal surface in two approaches. In the first, wheels are mounted on the front edge. These types of shovel cause the leading edge of the blade to move over the surface without frictionally engaging it. However, such shovels still require the person to manually support the weight of the snow as it accumulates on the blade, during course of forward movement of the shovel. This type of shovel will also leave a layer of snow left on the surface. The wheels that are mounted on the leading edge will create a gap between the surface and the ground. Some snow will pass under the shovel, in the gap created by the wheels.

The second approach uses wheels behind the blade face to support the load on the blade face. However, such shovels can only be handled on fairly flat surfaces. If the surface is rough or if the user wants to pull the shovel into deep snow will the wheels get caught in the snow. This type of wheeled shovels will therefore not work properly on a rough surface or in deep snow.

OBJECT OF THE INVENTION The object of the present invention is to provide a manually operated snow shovel, which prevents snow from being left on the surface and that can be operated with reduced friction on both dry and cleaned surfaces as on ice and deep snow.

The wheels are so mounted, to the shovel that the wheels rolling surface is parallel to the shovels slipping surface. The wheels are also mounted in rows that are parallel with the shovel's application direction. This is to minimise the wheel's friction against the snow.

When transporting the snow pusher, will the shovel be kept horizontal or slightly tilted backward. Depending on the characteristic of the ground, will the snow pusher either be rolling or gliding. If the surface is dry and flat will the snow pusher be rolling on the wheels. If the surface is covered with snow and ice will the snow pusher be gliding on the underside of the shovel.

When loading the snow pusher will it be tilted forward until the only the first wheels and the leading edge touches the ground. The snow pusher will then be pushed forward until the shovel is filled.

The wheels will also make the snow pusher more manoeuvrable compare to ordinary snow pushers without wheels.

BRIEF DESCRIPTION OF THE DRAWINGS Fig 1 is a perspective view of the snow shovel, diagonally from the front.

Fig. 2 is a perspective view of the snow shovel, from below.

Fig. 3 is a fragmented side elevation showing the shovels slipping surface and the wheels rolling surface.

Fig. 4 is a fragmented view, diagonally from the top, showing the wheels, axis and the mechanism to which they are mounted.

Fig. 5 is a perspective side view showing of the snow shovel during loading.

Fig. 6 is a fragmented side elevation showing a shovel. Remark that the wheel attachment mechanism is excluded from figure.

Fig. 7 is a perspective view of the snow shovel, from below.

LIST OF REFERENCE NUMERALS UTILIZED IN THE DRAWING 1. Shovel 2. Handle 3. Wheel 4. Wheels attachment mechanism 5. Axle 6, User 7. Snow 8. Forwardmost horizontal plane 9. Rearmost curved plane 10. Leading edge 11. Flopper stiffener 13. Inside of the shovel 14. Slipping surface/Back face a) Angle between the shovels slipping surface and the wheels rolling surface.

Angle between the rows direction and the shovels application direction.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawing, Fig 1 shows the shovel 1, a handle 2, and a plurality of wheels 3. The wheels 3 are mounted on the shovel 1 in one row or in a plurality of rows. The shovels mainly application direction, se the arrow, is perpendicular to the leading edge and lies in the forwardmost horizontal plane 8.

As shown in Fig 2. Are the projections of the rows of wheels mounted in the same direction as the snow pusher's application direction.

As shown in Fig 3. are the wheels mounted with their rolling surface parallel to the shovels slipping surface 14.

The wheel mechanism 4 with the wheels 3 is preferably mounted on the shovels back face 14. Depending on the wheel diameter can the upper top of the wheels extend, upwardly, through the shovel. The wheel mechanism 4 with the wheels 3 can also be mounted on the shovels inside with the wheels 3 extending downward, through the shovel 1, in one or several holes.

There is a distance between the shovels slipping surface 14 and the wheels 3 rolling surface.

The Fig 3. also shows the shape of the shovel. Taken from the leading edge begins the shovel with a horizontal plane which ends up in a curved back plane. The horizontal plane and the curved back plane form a scoop together a pair of side parts. An embodiment with a curved slipping surface is also possible.

Fig 4. shows the wheel mechanism 4, the wheels 3 and the wheel axis 5. The wheels are so mounted that there is a distance between them. As shown in Fig 6. are the wheels mounted with their rolling surface in an angle (a) adjacent to the shovels slipping surface 14.

As shown in Fig 7. are the projection of the rows of wheels mounted in an angle (ß) adjacent to the shovels application direction.

A form of execution where the wheels are placed one and one is also possible. This form should however create a higher friction when using the shovel in snow.




 
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