Anti-cogging apparatus and methods for reducing cogging of rotating shaft
US8701615B2 · kind B2 · utility
4Cited by
13References
20Claims
0Family size
Inventor
Key dates
| Filing date | Sep 16, 2011 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | Apr 5, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2127
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An anti-cogging apparatus improves rotation of a rotatable shaft about an axis. The shaft has a cyclical cogging torque acting thereon in a first direction. The anti-cogging apparatus includes a first anti-cogging member and a second anti-cogging member that rotate relative to each other in concert with rotation of the shaft, and the anti-cogging members interact to provide an anti-cogging torque to the shaft in a second direction to at least partially offset the cogging torque.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.