Cartridge type check valve
US4084609A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 17, 1976 |
| Grant date | Apr 18, 1978 |
| Priority date | — |
| Expiry date | Sep 17, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7934
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A check valve comprises a housing defining a valve seat thereon and a valve member reciprocally mounted in the housing to normally engage the seat for blocking fluid flow therepast. Two pairs of split retaining members are mounted in axially spaced relationship on a stem of the valve member and are expanded axially thereon by a compression coil spring for biasing the valve member to its closed position. A stop member is secured on an end of the stem of the valve member to prevent movement of one pair of the retaining members therepast. A slot is formed axially through the stop member and extends partially in the stem of the valve member to expose an end of the spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.