Frames for the backs of seats and the like and to their manufacture methods and devices
US5249841A · kind A · utility
7Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1991 |
| Grant date | Oct 5, 1993 |
| Priority date | — |
| Expiry date | Dec 18, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2/682
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rigid frame for use as framework in the back of a car seat is constituted by a shell which is itself built up by assembling together two half-shells (3) of stamped sheet metal along their juxtaposed edge flanges, which flanges extend respectively around an inside perimeter and an outer perimeter of each of the half-shells. A major portion at least of the length of the juxtaposed flanges of the half-shells is rolled up to form tubes (6, 7) of closed circular section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.