Collapsible cart
OwnerJohn Oliver Shindelar, Stuart Zinkeinventors
Life of this patent
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Abstract
Described is a collapsible cart that provides substantial stability when operated. Enlarged inflatable or compliant rear wheels allow an operator to lift a front end of the cart to traverse rough surfaces as needed. Enlarged rear wheels are mounted outside an overhead profile of the collapsible cart thereby providing lateral and other stability. A first shelf, bucket or working surface may be collapsed to contact or mate with a second such shelf to create an easily transportable or storable collapsed structure. A telescoping handle allows a collapsed cart to serve as a hand dolly.
Claims19
A collapsible cart comprising:
- a first pair of wheels;
- a second pair of wheels, wherein each of the first pair of wheels is larger in diameter than each of the second pair of wheels;
- a first working surface, wherein the first working surface comprises an outer profile, wherein each of the first pair of wheels is mounted outside the outer profile of the first working surface;
- at least one collapsible leg, wherein each collapsible leg is extendable to at least one extended position;
- a second working surface, wherein the second working surface comprises a slot running substantially parallel with either the first working surface or the second working surface, wherein the slot engages one end of the at least one collapsible leg.
A collapsible cart comprising:
- a first pair of wheels;
- a second pair of wheels, wherein each of the first pair of wheels is larger in diameter than each of the second pair of wheels;
- a first shelf, wherein the first shelf includes a profile, wherein each of the first pair of wheels is mounted outside the outer profile of the first shelf;
- collapsible legs, wherein each collapsible leg is extendable to at least one extended position;
- a second shelf, wherein the second shelf includes a profile, wherein either the first shelf or second shelf includes a slot running substantially parallel with either the first shelf or the second shelf, wherein the slot engages one end of at least one of the collapsible legs.
Dependencies are inferred from the claim text.