Worm gear mechanism and electric power steering apparatus equipped with the worm gear mechanism
US7814808B2 · kind B2 · utility
2Cited by
11References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2005 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | Oct 11, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19828
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Worm gear mechanism includes a driving worm, a torque delivering worm wheel meshing with the worm, and an auxiliary worm wheel superimposed on the torque delivering worm wheel. The auxiliary worm wheel has a pitch diameter greater than that of the torque delivering worm wheel. The auxiliary worm wheel is biased against the driving worm wheel via a biasing member in the form of a leaf spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.