Composite fluid control membrane for windshield washer pump and method of manufacturing same
US6530758B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2001 |
| Grant date | Mar 11, 2003 |
| Priority date | — |
| Expiry date | Jun 28, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/486
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A membrane seal for a multi-part fluid pump housing discharging windshield washer fluid from reservoir includes a one-piece, rigid carrier and a resilient seal member molded onto the rigid member to seal two pump housing parts. Resilient material also over molded over at least one flow aperture in the carrier to form a check valve to control fluid flow between an inlet and an outlet of the pump housing. Resilient material also is molded over another aperture in the carrier to form a pump motor shaft seal. In a construction method, the resilient material forming the peripheral seal, the check valve and the pump motor shaft seal is over molded in a single process step over the carrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.