Antiparallelogram folding structure, stroller, chair, stool, table, pram, trolley
US9295322B2 · kind B2 · utility
0Cited by
5References
25Claims
0Family size
Inventor
Key dates
| Filing date | May 24, 2013 |
| Grant date | Mar 29, 2016 |
| Priority date | — |
| Expiry date | May 24, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62B2205/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A foldable bearing structure includes a set of coplanar wheels and a folding device including a set of lower arms; at least a rear upper arm; an antiparallelogram deformable in a vertical plane, the antiparallelogram including two crossed segments; at least a first sidebar located in the vertical plane; the antiparallelogram deformed by folding between a first position, corresponding to an unfolded of the structure and a second position corresponding to a folded position, the transition from the first position to the second position reducing the wheelbase of the structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.