Manually and electrically controlled butterfly valve
US5238220A · kind A · utility
23Cited by
17References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1991 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Jul 11, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F2013/148
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A butterfly valve is utilized to control air flow in the environmental control air distribution system of an aircraft. A linkage system enables the valve to be manually controlled under normal conditions but to be shut off remotely in case of an emergency condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.