Butterfly valve assembly and method of making same
US4809948A · kind A · utility
8Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1987 |
| Grant date | Mar 7, 1989 |
| Priority date | — |
| Expiry date | Aug 24, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K35/025
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A butterfly valve assembly and method of making the same are provided wherein such valve assembly has a valve body structure and a closure structure and is provided with a new device for locking, in its closed position, a shaft assembly which is used to operate the closure structure. In accordance with another feature of the invention a new butterfly valve and method of making same are provided wherein such butterfly valve has new heat exchange devices comprising same for controlling the temperature thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.