Non-return valve
US7464723B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 4, 2005 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | May 1, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7935
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A non-return valve includes a valve body (1) which defines an internal fluid through-opening (7) extending along the longitudinal axis (5) of the body. A seat body (17) defines a valve seat (31) arranged in the through opening (7). A closing body (35) is axially displaceable in the through opening (7) oppositely to a closing force produced by a closing spring (45) between a closed position applied to the seat body (17) and an open position lifted from the valve seat (31) on the closing body (35). The valve body (1) forms a guide along which the seat body (17) is axially displaceable in different adjusting positions corresponding to the desired preloads of the closing spring (45) and, consequently to the desired adjustments of the closing force quantity of the closing spring (45).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.