Flapper valves with hydrofoil and valve systems
US11306835B1 · kind B1 · utility
40Cited by
19References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2019 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Jan 2, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/26
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Pivot valves have a valve seat and a valve closure mounted for pivoting movement through a closure chamber in a passage. The pivot valves may be selectively set in a check mode and an open mode. Flapper valves have a hydrofoil extending from a flapper. Valve assemblies comprise the pivot valves and flapper valves and have an open condition, a check condition, and a shut-off condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.