Lumbar support air valve assembly
US4570676A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1983 |
| Grant date | Feb 18, 1986 |
| Priority date | — |
| Expiry date | Mar 18, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87861
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A lumbar support air valve assembly is comprised of a housing having a chamber therein adapted to be connected to a source of air under pressure. A plurality of outlet ports are provided through the housing corresponding in number to the number of air bags located in the lumbar support region of an automobile seat back. The passage of pressurized air to the outlet ports is controlled by a check valve associated with each outlet port. A pressure relief valve is provided for limiting the pressure within the chamber and the individual air bags to a pre-determined value. A solenoid actuator is associated with each check valve within the housing so that on operation of the solenoid actuator by means of a switch located at a remote location on or near the dash board a solenoid actuator will cause the respective check valve to open. The energization of each solenoid actuator to open a check valve simultaneously opens an exhaust port for reducing the air pressure within the air bag associated therewith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.