Piston-type check valve with diffuser
US5921276A · kind A · utility
30Cited by
9References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1995 |
| Grant date | Jul 13, 1999 |
| Priority date | — |
| Expiry date | Oct 17, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7933
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An axial recess is formed in the downstream end of the diffuser body. An annular tail member is mounted on the downstream end of the valve piston. The tail member retracts into the recess when the piston is in the closed position and provides an extension of the diffuser body when the piston is in the open position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.