Carburetor throttle and choke control mechanism
US6439547B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2001 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Mar 5, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M1/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A carburetor throttle and choke control mechanism incorporating a choke-throttle cold-start fast idle setting latch mechanism having, in a first embodiment, a blade of a fast idle lever specially contoured for creating upon interengagement with a tang on a throttle lever initial torque resistance to co-rotation of the fast idle lever toward latched condition and then effecting force reversal for creating aiding torque to accelerate the fast idle lever relative to choke lever and thereby open a gap in the push coupling that remains in the latched position of the choke and throttle valves. The choke lever has a relatively rigid pusher leg portion adapted for abutment in push relation with a fast idle lever tang. In a second embodiment an extension of the leg portion in the form of a generally U-shaped resilient spring hook portion is adapted to overlap the tang and releasably hook engage the same when the leg portion is brought into full push abutment with said tang. The U-shaped hook portion is resiliently flexible to act as a spring to develop a torque on the choke by pulling the choke valve fully closed when said fast idle lever is moved to fully latched condition while flexing so…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.