Unloader/check valve
US4321940A · kind A · utility
10Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1981 |
| Grant date | Mar 30, 1982 |
| Priority date | — |
| Expiry date | Jan 19, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7853
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An unloader/check valve for use with an air compressor comprising a one-piece valve body, a valve member slidable in the body between open and closed positions, biased toward its closed position, the valve having a bleed for unloading the compressor when the valve member is in its closed position, and a dashpot arrangement for damping pulsations of the valve member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.