Driver's seat with automatic weight adjustment
US4158160A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1977 |
| Grant date | Jun 12, 1979 |
| Priority date | — |
| Expiry date | Nov 3, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2/544
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A driver's seat is automatically adjustable for height in response to the weight of the person sitting in it. The seat is carried by a spring suspension which is displaceable by a reversible servo-motor. Scanning means for controlling the motor comprise an actuating member and two vertically spaced sensors, either the actuating member or the sensors being secured to the seat for movement therewith and the other being stationary. If the seat carries a lightweight person, the spring suspension permits it to descend to a position where the actuating member and the upper sensor co-operate to activate the servo-motor to displace the suspension for lowering the seat still further, whereas in the case of a heavy person the actuating member and the lower sensor are effective to raise the seat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.