Butterfly valve
US4213595A · kind A · utility
10Cited by
21References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 4, 1978 |
| Grant date | Jul 22, 1980 |
| Priority date | — |
| Expiry date | May 4, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K27/0218
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
There is disclosed a butterfly-type valve cooperable with a valve seat element formed of an elastomeric material, wherein this element also forms a seal between two identical housing halves. There is also disclosed an improved method of making such a valve, as well as a vacuum motor for actuating the valve which incorporates a linkage mechanism having force limiting means to prevent the application of excessive forces to this valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.