Motor vehicle seat back
US5135282A · kind A · utility
61Cited by
4References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 6, 1991 |
| Grant date | Aug 4, 1992 |
| Priority date | — |
| Expiry date | Mar 6, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61H2205/081
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A seat back for use in private or commercial vehicles is disclosed constituting a pulsation cushion formed having a plurality of expandable chambers interconnected by pressure limiting valves. The valves are responsive to fluid under pressure to produce a sequential rolling wave in the chambers to modify the cross-sectional amplitude of the seat back in the longitudinal and/or transverse direction thereby to massage the back of a person occupying the seat. An adjustable pulsing device is provided to control the supply rate of the fluid and the frequency and amplitude of pulsation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.