Check valve with plastic lip seal
US10221954B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 2017 |
| Grant date | Mar 5, 2019 |
| Priority date | — |
| Expiry date | Jun 30, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7837
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A check valve is provided having a seat and a poppet. The seat is made of a plastic material, has an aperture for enabling fluid to flow through the seat, and also has one end portion that has a circumferential edge with a thin sealing lip. The poppet is slidably arranged in the aperture of the seat and has an elastic member. The poppet is configured for opening to enable fluid to flow in one direction when fluid pressure is detected. The elastic member is configured for ensuring sealing between an outer surface of the poppet and the thin sealing lip of the seat when there is no fluid flow in the one direction so as to substantially prevent fluid flow in the opposite direction. According to some embodiments of the present invention, the thin plastic sealing lip may have a thickness of about 0.01″ Embodiments are also envisioned where the thickness may be in a range of 0.003″-0.03″.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.