Process for forming an elastomeric membrane
US5009827A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1988 |
| Grant date | Apr 23, 1991 |
| Priority date | — |
| Expiry date | Nov 14, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2/7011
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle seat suspension has a thin high strength elastomeric membrane. The membrane is formed from block copolymer material by a process in which a sheet is extruded and tensioned to orient molecules in a select direction with respect to the membrane; the oriented membrane is annealed to retain the orientation during cyclical deformation of the membrane. The sheet form membrane is adapted to be connected with respect to a vehicle seat assembly frame and to serve as a backing for foam seating material and wherein the oriented structure of the membrane provides a two stage modulus in the direction of the orientation for providing static and dynamic load support characteristics which impart passenger comfort without increasing the weight of a seat assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.