Dual motor windshield wiper control system
US5182501A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1991 |
| Grant date | Jan 26, 1993 |
| Priority date | — |
| Expiry date | Sep 20, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S318/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Windshield wiper systems are commonly used on vehicles that must operate out-of-doors. In systems employing two or more wiper elements, each operating from an individual wiper motor, some mechanism must be employed to prevent out-of-sync operation from causing the wiper elements to collide if they operate in an overlap area. The instant wiper system includes first and second electric motors each drivingly connected to a respective windshield wiper element. Switching devices selectively controllably provide electrical power to the motors in response to receiving respective motor control signals. Synchronizing devices provide first and second synchronizing signals in response to the respective wiper elements being positioned at corresponding predetermined cycle start locations. A logic circuit controllably produces the motor control signals in response to receiving the respective synchronizing signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.