Control method for wiper apparatus
US6734644B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2002 |
| Grant date | May 11, 2004 |
| Priority date | — |
| Expiry date | Nov 26, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60S1/0814
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method (and apparatus) includes that a duty ratio of a driving voltage output to each wiper motor be required to be set according to several conditions. That is, while each wiper blade is moved in an interval from a starting position to a predetermined first wiping position in an upward operation, the duty ratio of a wiper motor on a driver's seat side is set so that the duty ratio is larger than the duty ratio of a wiper motor on a passenger seat side. Also, while each wiper blade is moved in another interval from each upper return position to a predetermined second wiping position in a return operation, the duty ratio of the wiper motor on the passenger seat side is set so that the duty ratio is larger than the duty ratio of the wiper motor on the driver's seat side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.