Process for manufacturing the frame of a back rest of a vehicle
US6019273A · kind A · utility
6Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1997 |
| Grant date | Feb 1, 2000 |
| Priority date | — |
| Expiry date | Aug 4, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2/682
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention relates to a process for producing the frame of the backrest of a motor vehicle seat from an originally straight metallic profile part which preferably has an I-shaped cross sectional area and which is bent into a U shape. In the middle part only one opening is formed in web (1), then it is closed again by the pressure of two compression jaws which move chords (2) towards one another in this middle part. In doing so opposite edge areas of the opening form joint (4). The adjacent planar areas of the web are joined to one another preferably by welding at this joint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.