Intermittent windshield wiper with wipe after wash
US5811950A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 2, 1994 |
| Grant date | Sep 22, 1998 |
| Priority date | — |
| Expiry date | May 2, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60S1/481
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An intermittent windshield wiper system achieves a substantial wipe event at the end of a wash cycle during intermittent operation. The innovative wiper system includes gear reducing box for reducing the oscillation rate of the wipers below the rotation rate of the wiper motor; a selector switch that functions in conjunction with a first rely for controlling the supply of power to the wiper motor to operate it at a higher speed during the initial phase of intermittent operation and during the wash cycle and with a second relay for controlling the supply of power to the wiper motor to operate it at a lower speed during the remainder of the intermittent cycle and to brake the wiper motor during the final phase of intermittent cycle. The innovative wiper system advantageously utilizes the same mechanism to achieve the normal intermittent dwell, instant on, and wipe after wash timing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.