Collapsible utility cart
US4705247A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 11, 1985 |
| Grant date | Nov 10, 1987 |
| Priority date | — |
| Expiry date | Sep 11, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62B2205/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A foldable utility cart is disclosed having first and second pairs of support legs (4, 6) at opposite sides thereof. The support legs (4, 6) are pivotal coupled at mid-sections (14, 16) so as to selectively diverge and converge into free standing and storage positions. The mid-sections (14, 16) have incut channels (24, 38) transversely disposed to each other and which interfit to being the pivotally connected legs (4, 6) into a common plane. Internal side walls (26, 28, or 40, 42) defining the incut channel of one leg mid-section brace against the top and bottom surfaces of the opposite leg mid-section. The side walls (26, 28 or 40, 42) are angularly profiled to limit and lock the pivotal rotation of the opposite leg at the free standing and storage angular positions. A shelf (12) is further provided which breaks upward at its mid-section into half sections (56, 58) which overlap along the break to lock the shelf (12) in a horizontal configuration. Overlapping structure (84, 86) is provided to limit downward deflection of the shelf sections (56, 58) beyond the horizontal plane and to brace the cart against accidental collapse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.