IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0115182
(2011-05-25)
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등록번호 |
US-8641061
(2014-02-04)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
Montgomery Patent & Design
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인용정보 |
피인용 횟수 :
4 인용 특허 :
26 |
초록
▼
A portable collapsible cart for building materials comprises a wheeled platform with selectable hinged upright supports that are collapsible, thereby forming a compact unit for storage of the device. The cart will support and transport various bulky building materials. The cart is easily maneuverabl
A portable collapsible cart for building materials comprises a wheeled platform with selectable hinged upright supports that are collapsible, thereby forming a compact unit for storage of the device. The cart will support and transport various bulky building materials. The cart is easily maneuverable by a single person due to swivel casters and a narrow upright design. The cart collapses to a low profile for storage and also provides removably attachable racks for transportation of long linear objects.
대표청구항
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1. A portable and collapsible cart for transporting materials comprising: a substantially rigid and planar lower frame having a rectangular configuration comprising an internal cavity in which a depth is defined by an upper horizontal surface and a lower horizontal surface;at least one wheel assembl
1. A portable and collapsible cart for transporting materials comprising: a substantially rigid and planar lower frame having a rectangular configuration comprising an internal cavity in which a depth is defined by an upper horizontal surface and a lower horizontal surface;at least one wheel assembly attached to each corner of said lower frame;a left side supporting arm pivotably connected to an interior vertical surface of said lower frame via a left side hinge mechanism;a right side supporting arm pivotably connected to an interior vertical surface of said lower frame via a right side hinge mechanism;wherein said left side supporting arm and said right side supporting arm pivots about said lower frame perpendicular to a major axis of said lower frame;a rear support brace pivotably connected to an interior vertical surface of said lower frame via a rear hinge mechanism;wherein said rear support brace pivots about said lower frame parallel to said major axis of said lower frame; and,at least two supporting braces affixed to a lower edge of said lower frame perpendicular to said major axis of said lower frame;wherein said rear support brace, said left side supporting arm, and said right side supporting arm further comprise a substantially vertical position relative to said lower frame defining a deployed configuration;wherein said rear support brace, said left side supporting arm, and said right side supporting arm further comprise a substantially horizontal position relative to said lower frame defining a collapsed configuration; and,wherein said rear support brace and said side supporting arms, when pivoted to said substantially horizontal position, further comprise a substantially flat configuration captivated within an interstitial area provided by said internal cavity. 2. The cart of claim 1, wherein said left side supporting arm and said right side supporting arm are removably attached to opposing sides of said rear support brace via an engagement means. 3. The cart of claim 2, wherein said engagement means further comprises a threaded fastener through said side supporting arms which engages a threaded receiving location on said rear support brace. 4. The cart of claim 1, wherein said wheel assemblies further comprise three-hundred-sixty degrees of rotation thereabout an axis perpendicular to the lower frame; wherein said rotation enables said cart to freely travel in any direction. 5. The cart of claim 1, wherein each of said wheel assemblies further comprises an actuatable locking lever for selectively immobilizing said wheel assembly during a loading or an unloading of said materials. 6. The cart of claim 4, wherein each of said wheel assemblies further comprises an actuatable locking lever for selectively immobilizing said wheel assembly during a loading or an unloading of said materials. 7. The cart of claim 1, wherein said supporting braces provide support to said rear support brace, said left side supporting arm, and said right side supporting arm when pivoted to said substantially horizontal position. 8. The cart of claim 1, wherein said hinge mechanisms are mounted to said interior vertical surface of said lower frame at an offset distance such that said rear support brace and said side supporting arms unobstructedly pivot about said lower frame, thereby enabling said rear support brace and said side supporting arms to collapse into an interstitial area provided by said internal cavity of said lower frame; wherein said cart further comprises a substantially planar horizontal surface when said rear support brace and said side supporting arms are in said substantially horizontal position. 9. The cart of claim 1, wherein each side supporting arm further comprises: a structural supporting member pivotally connected to said lower frame, comprising an upper end and a lower end;a back supporting surface at a first inclined angle from horizontal, comprising an upper end connected to said structural supporting member with an eyelet;a lower supporting surface perpendicularly connected to said back supporting surface; and,a holding tab formed at a front portion of said lower end of said structural supporting member and connected to an end of said lower supporting surface opposing said back supporting surface for captivating said materials;wherein said eyelet assists in captivating elongated material therein. 10. The cart of claim 1, wherein each of said side supporting arms further comprises a linear item support rack; wherein each of said linear item support racks removably attach to said side supporting arms via an attachment means; and,wherein each of said linear item support racks further comprises at least one perpendicularly attached support arm located at equivalent locations to provide an additional substantially horizontal support for linear materials; and,wherein said support arm further comprises a second inclined angle from horizontal. 11. The cart of claim 10, wherein said support arm further comprises at least one eyelet affixed to said at least one support arm; wherein said eyelet assists in captivating elongated material therein. 12. The cart of claim 1, wherein said cart provides a maximum load capacity comprising one thousand pounds. 13. A portable and collapsible cart for transporting materials comprising: a substantially rigid and planar lower frame having a rectangular configuration comprising an internal cavity in which a depth is defined by an upper horizontal surface and a lower horizontal surface;at least four casters attached to each corner of said lower frame comprising three-hundred-sixty degrees of rotation about an axis perpendicular to the lower frame enabling said cart to freely travel in any direction;a left side supporting arm pivotably connected to an interior vertical surface of said lower frame via a left side hinge mechanism;a right side supporting arm pivotably connected to an interior vertical surface of said lower frame via a right side hinge mechanism;wherein said left side supporting arm and said right side supporting arm pivots about said lower frame perpendicular to said major axis;a rear support brace pivotably connected to an interior vertical surface of said lower frame via a rear hinge mechanism;wherein said rear support brace pivots about said lower frame parallel to said major axis;wherein said left side supporting arm and said right side supporting arm are removably attached to opposing sides of said rear support brace via a mechanical fastener;wherein each side supporting arm further comprises a structural supporting member pivotally connected to said lower frame and comprises an upper end and a lower end, a back supporting surface at a first inclined angle from horizontal comprising an upper end connected to said structural supporting member with a first eyelet for captivating elongated materials therein, a lower supporting surface perpendicularly connected to said back supporting surface, and a holding tab formed at a front portion of said lower end of said structural supporting member and connected to an end of said lower supporting surface opposing said back supporting surface for captivating said materials; and,at least two supporting braces affixed to a lower edge of said lower frame perpendicular to a major axis of said lower frame;wherein said supporting braces provide support to said rear support brace, said left side supporting arm, and said right side supporting arm when pivoted to said substantially horizontal position;wherein said rear support brace, said left side supporting arm, and said right side supporting arm further comprise a substantially vertical position relative to said lower frame defining a deployed configuration; and,wherein said rear support brace, said left side supporting arm, and said right side supporting arm further comprise a substantially horizontal position relative to said lower frame defining a collapsed configuration;wherein said rear support brace and said side supporting arms further comprise a substantially flat configuration captivated within an interstitial area provided by said internal cavity of said lower frame when in said substantially horizontal position defining said collapsed configuration. 14. The cart of claim 13, wherein said mechanical fastener further comprises a threaded fastener through said side supporting arms which engages a threaded receiving location thereon said rear support brace. 15. The cart of claim 13, wherein each of said casters further comprises an actuatable locking lever for selectively immobilizing said casters during a loading or an unloading of materials. 16. The cart of claim 13, wherein said hinge mechanisms are mounted to said interior vertical surface of said lower frame at an offset distance such that said rear support brace and said side supporting arms unobstructedly pivot about said lower frame, thereby enabling said rear support brace and said side supporting arms to collapse into said interstitial area; wherein said cart further comprises a substantially planar horizontal surface when said rear support brace and said side supporting arms are in said substantially horizontal position. 17. The cart of claim 13, wherein each of said side supporting arms further comprises a linear item support rack; wherein each of said linear item support racks removably attach to said side supporting arms via an attachment means;wherein each of said linear item support racks further comprises at least one perpendicularly attached support arm located at equivalent locations to provide an additional substantially horizontal support for additional linear materials; and,wherein said support arm further comprises a second inclined angle from horizontal. 18. The cart of claim 13, wherein said support arm further comprises at least one second eyelet affixed to said at least one support arm; wherein said second eyelet assists in captivating elongated material therein. 19. The cart of claim 13, wherein said cart provides a maximum load capacity comprising one thousand pounds.
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