Remote control choke
US4461450A · kind A · utility
14Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1982 |
| Grant date | Jul 24, 1984 |
| Priority date | — |
| Expiry date | Jun 25, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/05
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
There is provided a choke having an adjustable stop for absolutely limiting its degree of openness and a pressurized fluid-operated piston connected to the valve stem which normally is acted-on by differential pressure to maintain the valve open to the full extent permitted by engagement of the stem with the stop. A mechanical assistance device is provided for tending to close the valve and this device may be provided with a visual indicator from which, by inspection, one may tell the degree of openness of the valve. Remotely operable and on-site mechanical devices are shown provided for adjusting the absolute stop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.