Lock valve assembly
US3974742A · kind A · utility
16Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1974 |
| Grant date | Aug 17, 1976 |
| Priority date | — |
| Expiry date | Oct 31, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2703
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A lock valve assembly is provided in a hydraulic control system for a double acting hydraulic jack which is adapted to permit the desired substantially unrestricted flow of inlet fluid selectively to either end of the jack under all operating conditions and is automatically self-conditioning to either restrict when necessary or not to restrict the flow of outlet fluid from either end of the jack as may be required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.