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A cart including a platform assembly configured to move upon a ground surface, a mast pivotably connected to the platform assembly, the mast being moveable between an upright position and a collapsed position, at least one (1) pair of support arms pivotably connected to the mast, each support arm of the pair of support arms being moveable between a folded position and an unfolded position, and a locking mechanism configured to retain the mast in the upright position and release the mast into the collapsed position, wherein the pair of support arms is con...
A cart including a platform assembly configured to move upon a ground surface, a mast pivotably connected to the platform assembly, the mast being moveable between an upright position and a collapsed position, at least one (1) pair of support arms pivotably connected to the mast, each support arm of the pair of support arms being moveable between a folded position and an unfolded position, and a locking mechanism configured to retain the mast in the upright position and release the mast into the collapsed position, wherein the pair of support arms is configured to support a bin when in the unfolded position.
대표
청구항
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1. A cart comprising: a platform assembly configured to move upon a ground surface;a mast pivotably connected to said platform assembly, said mast being moveable between an upright position and a collapsed position;at least one pair of support arms pivotably connected to said mast, each support arm of said pair of support arms being moveable between a folded position and an unfolded position; and,a locking mechanism configured to retain said mast in said upright position and release said mast into said collapsed position, comprising: a plurality of slide...
1. A cart comprising: a platform assembly configured to move upon a ground surface;a mast pivotably connected to said platform assembly, said mast being moveable between an upright position and a collapsed position;at least one pair of support arms pivotably connected to said mast, each support arm of said pair of support arms being moveable between a folded position and an unfolded position; and,a locking mechanism configured to retain said mast in said upright position and release said mast into said collapsed position, comprising: a plurality of slide bars operably engaged between said platform assembly and said mast, said plurality of slide bars being movable between an engaged position and a disengaged position, said plurality of slide bars being biased in said engaged position to retain said mast in said upright position; and,at least one release bar connected to said plurality of slide bars, said release bar being movable to position said plurality of slide bars in said disengaged position to release said mast into said collapsed position;wherein said pair of support arms is configured to support a bin when in said unfolded position. 2. The cart of claim 1, wherein said platform comprises: a frame;a support grate connected to said frame; and,a plurality of wheels rotatably connected to said frame. 3. The cart of claim 1, wherein said mast comprises: a lower mast assembly pivotably connected to said platform, said lower mast assembly being substantially perpendicular to said platform when in said upright position and substantially parallel to said platform when in said collapsed position; and,an upper mast assembly pivotably connected to said lower mast assembly, said upper mast assembly being substantially perpendicular to said platform when in said upright position and substantially parallel to said platform when in said collapsed position. 4. The cart of claim 3, wherein said locking mechanism comprises: a lower locking mechanism operably engaged between said platform and said lower mast assembly, said lower locking mechanism being configured to retain said lower mast assembly in said upright position and release said lower mast assembly into said collapsed position; and,an upper locking mechanism operably engaged between said lower mast assembly and said upper mast assembly, said upper locking assembly being configured to retain said upper mast assembly in said upright position and release said upper mast assembly into said collapsed position. 5. The cart of claim 4, wherein said lower locking assembly comprises: at least two lower slide bars operably connected to said platform and said lower mast assembly, said lower slide bars being movable between an engaged position and a disengaged position, said lower slide bars being biased in said engaged position to retain said lower mast assembly in said upright position; and,at least one lower release bar connected to said lower slide bars, said lower release bar being moveable to position said lower slide bars in said disengaged position to release said lower mast assembly into said collapsed position. 6. The cart of claim 4, wherein said upper locking assembly comprises: at least two upper slide bars operably connected to said lower mast assembly and said upper mast assembly, said upper slide bars being movable between an engaged position and a disengaged position, said upper slide bars being biased in said engaged position to retain said lower mast assembly in said upright position; and,at least one upper release bar connected to said upper slide bars, said upper release bar being moveable to position said upper slide bars in said disengaged position to release said upper mast assembly into said collapsed position. 7. The cart of claim 3, wherein said pair of support arms is pivotably connected to said upper mast assembly; and wherein each arm of said pair of support arms is substantially parallel to said upper mast assembly when in said folded position and substantially perpendicular to said upper mast assembly when in said unfolded position. 8. A cart comprising: a platform assembly configured to move upon a ground surface;a lower mast assembly pivotably connected to said platform assembly, said lower mast assembly being movable between an upright position substantially perpendicular to said platform and a collapsed position substantially parallel to said platform;an upper mast assembly pivotably connected to said lower mast assembly, said upper mast assembly being movable between an upright position substantially perpendicular to said platform and a collapsed position substantially parallel to said platform;a lower locking mechanism operably engaged between said platform and said lower mast assembly, said lower locking mechanism being configured to retain said lower mast assembly in said upright position and release said lower mast assembly into said collapsed position;an upper locking mechanism operably engaged between said lower mast assembly and said upper mast assembly, said upper locking assembly being configured to retain said upper mast assembly in said upright position and release said upper mast assembly into said collapsed position;at least one pair of support arms pivotably connected to said upper mast assembly, each support arm of said pair of support arms being moveable between a folded position substantially parallel to said upper mast assembly and an unfolded position substantially perpendicular to said upper mast assembly; and,at least one bin configured to be supported on said pair of support arms when in said unfolded position;wherein said lower mast assembly comprises a lower mast frame comprising a lower end pivotably connected to said platform assembly and an upper end opposite said lower end;wherein said upper mast assembly comprises an upper mast frame comprising a lower end pivotably connected to said lower end of said lower mast frame and an upper end opposite said lower end; and,wherein said lower locking mechanism comprises a pair of lower slide bars movably connected to said lower mast frame proximate said lower end of said lower mast frame, said lower slide bars being movable between an engaged position and a disengaged position, said lower slide bars being operably connected to said platform when in said engaged position, and said lower slide bars being biased in said engaged position to retain said lower mast assembly in said upright position. 9. The cart of claim 8, wherein said lower locking mechanism comprises a lower release bar connected to said lower slide bars, said lower release bar being moveable to position said lower slide bars in said disengaged position to release said lower mast assembly into said collapsed position. 10. The cart of claim 8, wherein said upper locking mechanism comprises a pair of upper slide bars moveably connected to said lower mast frame proximate said upper end of said lower mast frame, said upper slide bars being moveable between an engaged position and a disengaged position, said upper slide bars being operably connected to said upper mast frame when in said engaged position, and said upper slide bars being biased in said engaged position to retain said upper mast assembly in said upright position. 11. The cart of claim 10, wherein said upper locking mechanism comprises an upper release bar connected to said upper slide bars, said upper release bar being moveable to position said upper slide bars in said disengaged position to release said upper mast assembly into said collapsed position. 12. A cart comprising: a frame comprising a front end and a rear end opposite said front end;a support grate connected to said frame, said support grate extending from proximate said front end to proximate said rear end of said frame;a pair of castors rotatably connected to said frame proximate said front end;a pair of wheels rotatably connected to said frame proximate said rear end;a lower mast assembly comprising a lower end and an upper end, said lower end of said lower mast assembly being pivotably connected to said frame proximate said rear end, said lower mast assembly being movable between an upright position substantially perpendicular to said frame and a collapsed position substantially parallel to said frame;an upper mast assembly comprising a lower end and an upper end, said lower end of said upper mast assembly being pivotably connected to said upper end of said lower mast assembly, said upper mast assembly being moveable between an upright position substantially perpendicular to said frame and a collapsed position substantially parallel to said frame;a lower locking mechanism operably engaged between said frame and said lower mast assembly, said lower locking mechanism being configured to retain said lower mast assembly in said upright position and release said lower mast assembly into said collapsed position;an upper locking mechanism operably engaged between said lower mast assembly and said upper mast assembly, said upper locking mechanism being configured to retain said upper mast assembly in said upright position and release said upper mast assembly into said collapsed position;a first pair of support arms pivotably connected to said upper mast assembly proximate said upper end of said upper mast assembly, each support arm of said first pair of support arms being moveable between a folded position substantially parallel to said upper mast assembly and an unfolded position substantially perpendicular to said upper mast assembly; and,a second pair of support arms pivotably connected to said upper mast assembly proximate said lower end of said upper mast assembly, each support arm of said second pair of support arms being moveable between a folded position substantially parallel to said upper mast assembly and an unfolded position substantially perpendicular to said upper mast assembly. 13. The cart of claim 12, wherein: said lower mast assembly comprises: a first upright frame member and a second upright frame member spaced apart from and substantially parallel to said first upright frame member, said first and second upright members each comprising a lower end pivotably connected to said frame and an upper end;an upper crossbar member connected to and spanning between said first and second upright members proximate said upper end of said lower mast assembly; and,a lower crossbar member connected to and spanning between said first and second upright members proximate said lower end of said lower mast assembly; and,said upper mast assembly comprises: a first upright frame member and a second upright frame member spaced apart from and substantially parallel to said first upright frame member, said first and second upright members each comprising a lower end pivotably connected to said upper end of said first and second upright members of said lower mast assembly and an upper end; and,at least one crossbar member connected to and spanning between said first and second upright members of said upper mast assembly. 14. The cart of claim 13, wherein said lower locking mechanism comprises: a pair of opposed lower latch straps connected to said frame;a pair of opposed lower slide bars moveably connected to said first and second upright frame members proximate said lower end of said lower mast assembly, said lower slide bars being moveable between an engaged position and a disengaged position, said lower slide bars being received by said lower latch straps when in said engaged position, and said lower slide bars being biased in said engaged position to retain said lower mast assembly in said upright position; and,a lower release bar connected to said lower slide bars, said lower release bar being moveable to position said lower slide bars in said disengaged position to release said lower mast assembly into said collapsed position. 15. The cart of claim 14, wherein said upper locking mechanism comprises: a pair of opposed upper latch straps connected to said first and second upright frame members of said upper mast assembly proximate said lower end of said upper mast assembly;a pair of opposed upper slide bars moveably connected to said first and second upright frame members of said lower mast assembly proximate said upper end of said lower mast assembly, said upper slide bars being moveable between an engaged position and a disengaged position, said upper slide bars being received by said upper latch straps when in said engaged position, and said upper slide bars being biased in said engaged position to retain said upper mast assembly in said upright position; and,an upper release bar connected to said upper slide bars, said upper release bar being moveable to position said upper slide bars in said disengaged position to release said lower mast assembly into said collapsed position. 16. The cart of claim 15, further comprising: a first bin configured to be supported by said first pair of support arms when in said unfolded position; and,a second bin configure to be supported by said second pair of support arms when in said unfolded position. 17. The cart of claim 16, wherein: each support arm of said first pair of support arms and said second pair of support arms comprises a first end pivotably connected to said upper mast assembly, a second end opposite said first end, and an upwardly projecting hook proximate said second end; and,said first bin and said second bin each comprises a plurality of sidewalls defining an internal volume, an upper perimeter edge, a lip extending around at least part of said upper perimeter edge, and a pair of opposed lip apertures disposed through said lip, said lip being configured to receive said support arm, and said lip aperture being configured to receive said hook.
