Park pawl for electric vehicle transmissions
US6805212B2 · kind B2 · utility
3Cited by
13References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 17, 2002 |
| Grant date | Oct 19, 2004 |
| Priority date | — |
| Expiry date | Dec 21, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/62
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A parking pawl is implemented on a series type, hybrid electric vehicle using a pair of parallel worm gear rollers. The worm gear rollers are placed on opposite sides of a transmission gear from one another and mounted for rotation along their major axes allowing the worm gear rollers to be rotated to present either a planed side or a threaded section to the gear. The gear is circumferentially slotted to cooperate with the threaded section of the rollers to prevent rotation of the gear, but to turn freely when the planed faces of the worm gear roller are adjacent the gear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.