Windshield wiper washer motor for use in a vehicle
US5833441A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1996 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Jun 19, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60S1/481
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system and method for sealing a pressure area in a washer pump is disclosed. The system and method provides designed interference and contact points between a plurality of adjacent walls which are arranged to define a serpentine channel and which are integrally molded into a pump housing and a motor housing. At least one of the plurality of walls becomes biased in response to fluid pressure in a pressure area such that it engages one or more of the plurality of walls in the mating housing to provide at least one seal to seal the pressure area. The walls may be provided with a beveled edge to facilitate providing a "point contact" to enhance sealing. The system and method reduce or entirely eliminate the need for an O-ring between, for example, the pump housing and the motor housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.