Wiper motor drive system having breakaway clutch
US9604602B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2014 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Mar 17, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60S1/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a wiper motor drive system that includes a motor, an output shaft operatively connected to a wiper blade, and a breakaway clutch operatively connected between the motor and output shaft. The breakaway clutch includes a torque-sensitive releasable locking mechanism having a first position wherein torque is translated from the motor to the output shaft through the breakaway clutch to drive the wiper blade across a surface to be wiped, and a second position wherein torque is interrupted between the motor and the output shaft in response to a predetermined rotational torque differential acting on the output shaft, with the locking mechanism being movable back to the first position when the differential torque is reduced on the output shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.