Folding frame for a vehicle or trailer
US5921571A · kind A · utility
27Cited by
14References
20Claims
0Family size
Inventor
Key dates
| Filing date | May 1, 1998 |
| Grant date | Jul 13, 1999 |
| Priority date | — |
| Expiry date | May 1, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62K27/16
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A foldable frame and body for a vehicle or trailer provides a chassis, at least one frame member pivotally mounted to the chassis at a first pivot point, a hinge arm pivotally mounted to the chassis at a second pivot point and a release arm for closing the frame which is pivotally connected to the frame member at a third pivot point and to the hinge arm at a fourth pivot point such that the fourth pivot point moves toward a line between the second and third pivot points as the frame is unfolded, leveraging the frame to an open position. The foldable vehicle or trailer is lightweight and may be motorized or human-powered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.