Check valve
US5183075A · kind A · utility
74Cited by
11References
15Claims
0Family size
Inventor
Key dates
| Filing date | Mar 28, 1990 |
| Grant date | Feb 2, 1993 |
| Priority date | — |
| Expiry date | Mar 28, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7938
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Check valve with a movable valve element (3), especially a valve element that is manufactured from a ball, said valve element possessing a spherical surface (7) which faces a valve seat (5) and serves as a sealing surface, possessing a radial guidance zone (11) that faces a bore (1) inside which it itself is received, and containing recesses (8) for the medium flow, said recesses connecting the region (9) of the bore (11) upstream of the guidance zone (11) to the region (10) downstream thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.