Gate valve with expandable and contractable closure member
US4036260A · kind A · utility
6Cited by
8References
25Claims
0Family size
Inventors
Key dates
| Filing date | Jun 26, 1975 |
| Grant date | Jul 19, 1977 |
| Priority date | — |
| Expiry date | Jun 26, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/4273
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve comprising: a housing having an opening therethrough around which is provided a seat; a closure assembly for blocking flow through the opening and for sealing engagement with the seat; and an actuator assembly connected to the closure assembly for moving the closure assembly between a first position, out of the flow path of the opening, to a second position, in the flow path, and for expanding the closure assembly for sealing engagement with the seat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.