IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0614725
(2003-07-07)
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발명자
/ 주소 |
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인용정보 |
피인용 횟수 :
14 인용 특허 :
8 |
초록
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A multi-functional cart for transporting objects including a frame, a first handle connected to the frame adjacent a first end of the frame, a second handle connected to the frame adjacent a second end of the frame, a first pair of wheels connected to the frame adjacent the first end of the frame an
A multi-functional cart for transporting objects including a frame, a first handle connected to the frame adjacent a first end of the frame, a second handle connected to the frame adjacent a second end of the frame, a first pair of wheels connected to the frame adjacent the first end of the frame and a second pair of wheels connected to the frame adjacent the second end of the frame. The handles are different sizes and are selectively movable between perpendicular to the frame and coplanar to the frame. The frame has a generally rectangular configuration and includes frame members which are telescopically connected to each other. The multi-functional cart transforms into eight or more configurations.
대표청구항
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1. A multi-functional cart for transporting objects comprising:a frame;a first handle connected to said frame adjacent a first end of said frame;a second handle connected to said frame adjacent a second end of said frame, said first handle selectively movable between a first position perpendicular t
1. A multi-functional cart for transporting objects comprising:a frame;a first handle connected to said frame adjacent a first end of said frame;a second handle connected to said frame adjacent a second end of said frame, said first handle selectively movable between a first position perpendicular to said frame and a second position generally coplanar within said frame, said frame having a first axle member in engagement with said first handle, said frame having a second axle member in engagement with said second handle, said first handle rotatable between said first and second positions about said first axle member, said second handle rotatable between said first and second positions about said second axle member;a first pair of wheels connected to said frame adjacent said first end of said frame, said first pair of wheels being rotatably mounted to a tubular axle; anda second pair of wheels connected to said frame adjacent said second end, each of said second pair of wheels being a caster rotatably interconnected to said frame, said first handle having a length ranging between 8 inches and 24 inches as measured from a bottom of said first pair of wheels upwardly when said first handle is in said first position, said second handle having a length of at least 39 inches as measured from a bottom of said second pair of wheels upwardly when said second handle is in said first position, said frame, said first and second handles and said first and second pair of wheels occupying a volume of less than 50 cubic inches, and said frame, said first and second handles and said first and second pair of wheels having a total weight of less than 18 pounds, each of said first pair of wheels having a pneumatic tire affixed around a hub, said hub being comprised of a polymeric material having a central aperture, said central aperture receiving roller bearings therein, said roller bearings receiving said tubular axle therein, said tubular axle having a pair of holes formed therein, said pair of holes receiving a cotter pin therein at an end of said tubular axle outwardly of the wheel.2. The cart of claim 1, each of said first pair of wheels having a thermoplastic tread bonded to a polymeric hub.3. The cart of claim 2, said polymeric hub having a central aperture therein, said central aperture receiving roller bearings therein, said roller bearings receiving said tubular axle therein, said polymeric hub having a plurality of holes formed therein and therethrough and extending in spaced radial relationship around said central aperture.4. The cart of claim 1, each of said second pair of wheels having a caster frame pivotally connected to said frame and extending downwardly therefrom, said caster being rotatably mounted within said caster frame.5. The cart of claim 1, said caster frame comprising:a generally flat surface in parallel relationship with said frame, said flat surface being pivotally connected to said frame;a first wing member extending transversely outwardly from said flat surface on one side of said flat surface; anda second wing member extending transversely outwardly from said flat surface on an opposite side of said flat surface in parallel relationship to said first wing member, said caster being rotatably mounted between said first and second wing members.6. A multi-functional cart for transporting objects comprising:a frame;a first handle connected to said frame adjacent a first end of said frame;a second handle connected to said frame adjacent a second end of said frame, said first handle selectively movable between a first position perpendicular to said frame and a second position generally coplanar within said frame, said frame having a first axle member in engagement with said first handle, said frame having a second axle member in engagement with said second handle, said first handle rotatable between said first and second positions about said first axle member, said second handle rotatable between said first and second positions about said second axle member;a first pair of wheels connected to said frame adjacent said first end of said frame, said first pair of wheels being rotatably mounted to a tubular axle; anda second pair of wheels connected to said frame adjacent said second end, each of said second pair of wheels being a caster rotatably interconnected to said frame, said first handle having a length ranging between 8 inches and 24 inches as measured from a bottom of said first pair of wheels upwardly when said first handle is in said first position, said second handle having a length of at least 39 inches as measured from a bottom of said second pair of wheels upwardly when said second handle is in said first position, said frame, said first and second handles and said first and second pair of wheels occupying a volume of less than 50 cubic inches, and said frame, said first and second handles and said first and second pair of wheels having a total weight of less than 18 pounds, each of said second pair of wheels having a caster frame pivotally connected to said frame and extending downwardly therefrom, said caster being rotatably mounted within said caster frame, said caster frame comprising:a generally flat surface in parallel relationship with said frame, said flat surface being pivotally connected to said frame;a first wing member extending transversely outwardly from said flat surface on one side of said flat surface; anda second wing member extending transversely outwardly from said flat surface on an opposite side of said flat surface in parallel relationship to said first wing member, said caster being rotatably mounted between said first and second wing members, each of said first and second wing members having a plurality of holes formed therein and therethrough in spaced parallel relationship downwardly from said flat surface.7. The cart of claim 6, said caster having a thermoplastic tread bonded to a polymeric hub, said polymeric hub having a plurality of holes formed therein and therethrough and extending in spaced radial relationship around said caster.8. The cart of claim 6, said frame having a first frame member and a second frame member in telescopic relationship to each other, said frame having a generally rectangular configuration, said frame being fixable in either a telescoped position or a retracted position.9. The cart of claim 8, wherein said first frame member has a plurality of threaded thumbnuts having a diameter of 1.75 inches, said thumbnuts extending through said first and second frame members and fixedly engaging said first and second frame members, and each of said thumbnuts having a tensioner spring interposed between each of said thumbnuts and said frame.10. The cart of claim 8, wherein said frame in said retracted position, said first handle being selectively locked in said second position, said second handle being selectively locked in said second position, said first and second pair of wheels have a dimension of 26″×14.25″×7.5″; andwherein said frame in said telescoped position, said first handle being selectively locked in said first position, said second handle being selectively locked in said first position, said first and second pair of wheels have a dimension of 39″×14″×31″.11. A multi-functional cart for transporting objects comprising:a frame;a first handle connected to said frame adjacent a first end of said frame;a second handle connected to said frame adjacent a second end of said frame, said first handle selectively movable between a first position perpendicular to said frame and a second position generally coplanar within said frame, said frame having a first axle member in engagement with said first handle, said frame having a second axle member in engagement with said second handle, said first handle rotatable between said first and second positions about said first axle member, said second handle rotatable between said first and second positions about said second axle member;a first pair of wheels connected to said frame adjacent said first end of said frame, said first pair of wheels being rotatably mounted to a tubular axle; anda second pair of wheels connected to said frame adjacent said second end, each of said second pair of wheels being a caster rotatably interconnected to said frame, said first handle having a length ranging between 8 inches and 24 inches as measured from a bottom of said first pair of wheels upwardly when said first handle is in said first position, said second handle having a length of at least 39 inches as measured from a bottom of said second pair of wheels upwardly when said second handle is in said first position, said frame, said first and second handles and said first and second pair of wheels occupying a volume of less than 50 cubic inches, and said frame, said first and second handles and said first and second pair of wheels having a total weight of less than 18 pounds, said second frame member having an end surface extending between said second pair of wheels, said end surface having a plurality of holes formed therein and therethrough, said plurality of holes being in spaced relationship to each other and having a colinear central axis.12. The cart of claim 11, said first frame member having a first stair climber frame member affixed directly to and extending directly outwardly from an underside of one side of said first frame member, said first frame member having a second stair climber frame member affixed directly to and extending directly outwardly from an underside of an opposite side of said first frame member, said second stair climber frame being in parallel relationship to said first stair climber frame, wherein said first and second stair climber frames are welded flush to respective inside edges of said first frame member.13. The cart of claim 12, said first pair of wheels being positioned adjacent respective outer surfaces of said first and second stair climber frames.
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