Speed responsive systems
US4010674A · kind A · utility
6Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1975 |
| Grant date | Mar 8, 1977 |
| Priority date | — |
| Expiry date | Jul 31, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K31/105
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An actuator device includes a chamber partly bounded by a movable wall and connected to atmosphere through a permanently open orifice and an electromagnetic valve which is maintained in a closed position when de-energized and which controls the connection to said chamber of a volume of gas at other than atmospheric pressure when said valve is open.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.