Throttle valve control device for an internal combustion engine
US6364284B1 · kind B1 · utility
7Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1999 |
| Grant date | Apr 2, 2002 |
| Priority date | — |
| Expiry date | Oct 25, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/043
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A throttle valve controller for an internal combustion engine in which a ring gear comprises a center body, a teeth portion, at least one rotation detent portion and at least one contraction detent portion for preventing the ring gear from rotation along the peripheral direction of the ring gear, wherein the rotation detent portion and the contraction detent portion are arranged with equal spacing along the peripheral direction of the ring gear. As a result, accuracy of the circularity of the ring gear is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.