초록 ▼

A collapsible work station has a working surface with an opposing top and bottom. First and second corner legs are rotatably connected to the bottom surface at each of four corners. Each leg has a first folded position against the bottom and a second extended position perpendicular to the bottom. Th

A collapsible work station has a working surface with an opposing top and bottom. First and second corner legs are rotatably connected to the bottom surface at each of four corners. Each leg has a first folded position against the bottom and a second extended position perpendicular to the bottom. The first legs are shorter than the second legs. An adjustable length, central support leg is rotatably connected to the bottom surface and has a first folded position adjacent the bottom and a second extended position perpendicular to the bottom. The central leg rests on a first support surface while different combinations of the corner legs are extended to rest upon a second support surface such as a bed, to provide a stable work station.

대표청구항 ▼

1. A collapsible work station, comprising: a generally rectangular working surface having a flat top surface and an opposing bottom surface;first and second legs rotatably connected to the bottom surface at four corners of the working surface, each leg having a first folded position immediately adja

1. A collapsible work station, comprising: a generally rectangular working surface having a flat top surface and an opposing bottom surface;first and second legs rotatably connected to the bottom surface at four corners of the working surface, each leg having a first folded position immediately adjacent the bottom surface and a second extended position extending at an angle of about 80-120 degrees from the bottom surface of the corner at which the leg is fastened, the first legs having a first length and the second legs having a second length with the first length being shorter than the second length;a central support leg rotatably connected to the bottom surface and having a first folded position immediately adjacent the bottom surface and a second extended position extending at an angle of about 90 degrees from the bottom surface, the central support leg having an adjustable length which length is greater than either the first or second lengths and being connected to the bottom surface within the area bounded by the corner legs and offset from the corner legs;a plurality of the first and second corner legs each being connected to a different rotation limiting mechanism to hold the rotation of each of the plurality of the first and second corner legs in the second position during use; anda rotational limiting mechanism connected to the central support leg and the bottom surface to hold the central support leg in the second position during use. 2. The collapsible work station of claim 1, further comprising first and second auxiliary support surfaces each extending along a different opposing side of the working surface and rotatably connected thereto, each auxiliary surface having an upper surface and an opposing bottom surface, each auxiliary surface having a folded position in which the upper surface of the auxiliary surface faces the upper surface of the working surface and is adjacent thereto, each auxiliary surface having a second position in which the upper surface of the auxiliary surface is substantially coplanar with the upper surface of the working surface. 3. The collapsible work station of claim 2, wherein each first leg is independently movable relative to the second leg and nest together such that the second leg has an opening within which the first leg fits when the first and second corner legs are in the first, folded position, and further comprising a resilient member releasably connecting the second leg to the working surface to retain that second leg in the first position. 4. The collapsible work station of claim 2, further comprising means for releasably connecting the first and second corner legs together. 5. The collapsible work station of claim 2, further comprising means for releasably holding the corner legs in the first, collapsed or folded position. 6. The collapsible work station of claim 2, wherein the central support leg comprises two parts sliding relative to each other with a releasable clamp to hold the two parts together when the desired length of the central support leg is achieved. 7. The collapsible work station of claim 2, wherein each leg is hingedly connected to the support surface and further comprising a lock mechanism having two prongs each sized and located to fit into first and second recesses, the first recess being located in a side of the working surface and the second recess being located in a side of one of the auxiliary surfaces, the first and second recesses being adjacent each other when the auxiliary surface is in its folded position. 8. The collapsible work station of claim 2, wherein each leg and each auxiliary surface rotate between the first and second positions about a hinge with each hinge having a rotational axis, and wherein the rotational axes are generally parallel to each other. 9. The collapsible work station of claim 2, wherein at least one of said plurality of the corner legs have an adjustable rotation using one of friction to hold the plurality of corner legs in the second position or using projections on one of the leg or work surface fitting within recesses on the other of the work surface or leg to hold the leg in the second position. 10. The collapsible work station of claim 2, wherein at least one of said plurality of corner legs has a rotation position mechanism to releasably fasten the leg to the work surface to vary the orientation of the corner leg with the work surface using projections on one part fitting within recesses on the other part. 11. The collapsible work station of claim 2, wherein the central support leg has an adjustable length using one of friction to hold two leg portions together to change the length, or uses projections on one part of the leg fitting within recesses on the other part of the leg to change the length. 12. The collapsible work station of claim 1, wherein each first leg is independently movable relative to the second leg. 13. The collapsible work station of claim 1, wherein each first leg is independently movable relative to the second leg and first and second legs in each corner nest together such that the second leg has an opening within which the first leg fits when the first and second corner legs are in the first, folded position. 14. The collapsible work station of claim 1, wherein each leg has a positioning mechanism urging each leg to maintain its first position when in the first position, and urging each leg to maintain its second position when in the second position. 15. The collapsible work station of claim 1, wherein the central support leg comprises two parts sliding relative to each other with a releasable clamp to hold the two parts together when the desired length of the central support leg is achieved. 16. The collapsible work station of claim 1, wherein each leg is hingedly connected to the bottom surface and the hinge lines are parallel to each other. 17. A collapsible work station, comprising: a rectangular working surface having opposing top and bottom sides bounded by a top and bottom edge and two opposing side edges, the working surface having flanges along at least the two opposing side edges with the flanges depending below the bottom side of the working surface;first and second corner legs located on the bottom side at each corner of the working surface and hinged along one of two hinge lines that are parallel to but offset from the two opposing side edges of the working surface, each corner leg having a first folded position adjacent and substantially parallel to the bottom side of the support surface and a second, extended position rotated about 90 degrees or more away from the bottom side of the working surface, each first leg having a first length and each second leg having a second length with the second length being substantially greater than the first length;a central leg located within an area bounded by the first and second corner legs and offset from the center of the working surface and offset from the corner legs, the central leg having a first folded position adjacent the bottom side of the support surface and a second, extended position rotated about 90 degrees away from the bottom side of the working surface, the central leg having an adjustable length with the shortest length being greater than the length of the second leg in the folded position. 18. The collapsible work station of claim 17, wherein each corner leg has a mechanism limiting the rotation of the leg in the second position. 19. The collapsible work station of claim 17, wherein each second corner leg has a mechanism releasably fastening the second leg to the rectangular working surface and releasably fastening the second leg to the first leg that is located in the same corner as the second leg to retain the corner legs in the folded position. 20. The collapsible work station of claim 17, wherein each first leg is independently movable relative to the second leg and the first and second legs in each corner nest together such that the second leg has an opening within which the first leg fits when the first and second corner legs are in the first, folded position. 21. The collapsible work station of claim 17 wherein each leg has a device configured to hold the leg in the second extended position during use of the work station.