Method of making a vehicle seat, and a vehicle seat made by the method
US5988756A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1997 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Sep 30, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2/68
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method of making a vehicle seat in which the strength member of the back has a first upright connected to the strength member of the seat proper by a hinge mechanism, a second upright that is not as strong as the first and that is hinged to the strength member of the seat proper, and two horizontal cross-members, the two cross-members and the top portion of the second upright being constituted by a tube folded into a general U-shape and of section that varies along its length. The method includes a step which consists in imparting the final shape to the tube by hydroforming, starting from an initial tube of substantially constant section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.