Governing device for a spring brake actuator
US4230021A · kind A · utility
5Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1977 |
| Grant date | Oct 28, 1980 |
| Priority date | — |
| Expiry date | Oct 11, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T17/086
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A spring brake actuator has a quick release clutch for deactivating the brake in absence of fluid pressure and a governing device operating the clutch in response to the relative pressures prevailing at the service brake and spring brake cylinders. The governing device comprises a biased pilot valve and a signal valve which permit alternate operation of the brake release clutch manually or automatically.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.