Spring assembly in an engine air throttle control providing rotational blocking when relaxed
US5996551A · kind A · utility
15Cited by
5References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 12, 1998 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Aug 12, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D9/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A spring assembly in a throttle valve connection for control of combustion air to an internal combustion engine, in which a rotor is movable in opposite directions to control flow of combustion air. The spring assembly has a coil spring with first and second legs at respective opposite ends engaging housing and rotor parts. The housing and rotor parts are provided with respective oblique surfaces engaging one of the legs of the spring when the spring is relaxed to resist relative rotation of the housing and rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.