Mining cylinder hydraulic slide valve
US4516601A · kind A · utility
6Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1982 |
| Grant date | May 14, 1985 |
| Priority date | — |
| Expiry date | Jun 30, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7836
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A slide valve especially designed for mining prop cylinders. The slide valve is durable and can be easily checked and adjusted. An inlet pressure line is separated from an outlet line by a diaphragm pressed against its seat by a spring. A thrust washer allows the diaphragm to remain flat, even when it is subjected to the pressure of the spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.