Foldable utility cart with auxiliary support carriage
Patent 4705280 Issued on November 10, 1987. Estimated Expiration Date: 
October 29, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 29, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 908472 1128333 2469506 2657069 2767996 2879072 2970846 3879053 Folding utility cart Trailers Patent #: 4529220 InventorApplicationNo. 06/924863 filed on 10/29/1986US Classes:280/40, Two-wheel280/655, Collapsible handle280/656, Trailer280/767Auxiliary wheelExaminersPrimary: Love, John J.Assistant: Mar, Michael Attorney, Agent or FirmInternational ClassesB62B 1/00 (20060101)B62B 1/20 (20060101) AbstractA foldable utility cart has a hauling body convertible between erected and folded conditions and tiltable between upright hauling and upturned nonhauling positions. Wheels are connected to the hauling body so as to engage the ground and movably support the body when in its erected condition and upright hauling position, but not support the body when in its folded condition and upturned nonhauling position. An auxiliary support carriage is connected to the hauling body and disposable at transport and stored positions respectively when the hauling body is tilted between its upturned nonhauling and upright hauling positions. When the carriage is disposed at its transport position, it is engaged with the ground so as to support the hauling body freestanding without operator assistance in its upturned nonhauling position out of contact with the ground thereby facilitating conversion of the hauling body between its erected and folded conditions and transport of the body to and from a storage location. When the carriage is disposed at its stored position, it is not engaged with the ground and does not support the hauling body.Other References
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