Key member for retaining a control valve in a hub
US4953446A · kind A · utility
17Cited by
8References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 1989 |
| Grant date | Sep 4, 1990 |
| Priority date | — |
| Expiry date | Aug 14, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/57
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A control valve arrangement for a pressure differential operated servomotor wherein a key member is located in a slot in a hub to retain the control valve and position the control valve in a position to isolate a first chamber from a second chamber in the absence of an input force being applied to operate the valve. The control valve in response to an input force immediately moves to initiate the development of the pressure differential and as a result substantially eliminates the operational time to effect a brake application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.