Dual diaphragm choke assembly
US4144292A · kind A · utility
1Cited by
9References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1977 |
| Grant date | Mar 13, 1979 |
| Priority date | — |
| Expiry date | Oct 11, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M1/10
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A carburetor is shown with a variably openable choke valve operatively connected through linkage means to a related choke valve control assembly having a thermostat, a first vacuum responsive diaphragm and a second vacuum responsive diaphragm; upon initial starting of a cold engine the first diaphragm is effective to move the choke valve to an initial cold engine qualifying position and after the engine attains a preselected temperature the second diaphragm is effective to move the choke valve to a second, more nearly fully opened, qualifying position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.