Station wagon tailgate
US4143904A · kind A · utility
49Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1978 |
| Grant date | Mar 13, 1979 |
| Priority date | — |
| Expiry date | Feb 27, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S292/29
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A vehicle tailgate of the type which is hinged along a bottom edge for pivotal movement about a horizontal axis. Specifically, the invention concerns a torque rod type counterbalancing spring for the tailgate which exerts both an outward opening bias on the tailgate and a lifting or closing force on the tailgate opposing opening movement so as to counterbalance gravitational forces thereon. The torque rod is mounted and connected so that the rod is continuously stressed in a torsional manner in only one direction from opening to closing, there being no null point where there is a reversal of stress on the torque rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.