Geared wheel motor design
US7469858B2 · kind B2 · utility
69Cited by
27References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 6, 2004 |
| Grant date | Dec 30, 2008 |
| Priority date | — |
| Expiry date | Dec 23, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/80
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention is a compound planetary gear system which has a moveable sun gear and a lockable sun gear to change the gear ratio between a high gear ratio and a pseudo 1:1 slipping ratio. The system makes use of a ratchet and pawl mechanism to provide a safety backup for when the lockable sun gear is locked. The invention may be used to move the aircraft from a stationary position, for taxiing, and for pre-rotating the wheels prior to landing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.