Control valve
US4471805A · kind A · utility
15Cited by
10References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1981 |
| Grant date | Sep 18, 1984 |
| Priority date | — |
| Expiry date | Nov 12, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87177
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control valve for controlling the flow of fluid to and from a single-acting cylinder and having a metered flow-controlling valve section and a rotatable valve member movable to four different positions to provide four different operations of the single-acting cylinder, namely: rapid advance, slow metered advance, hold and return.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.