Nozzle flapper valve
US4388942A · kind A · utility
6Cited by
4References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 16, 1981 |
| Grant date | Jun 21, 1983 |
| Priority date | — |
| Expiry date | Jan 16, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2409
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A nozzle flapper valve provided with a nozzle, fixed throttle and flapper, characterized in that the flapper is formed to be cylindrical and has the cylindrical peripheral surface positioned on the axis of the nozzle so as to simplify the flapper moving mechanism and to prevent the flapper clearance from being clogged with dust in the fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.