Oil-less pressure relief valves
US9187229B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2014 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Jul 14, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7891
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A self contained one-way pressure relief valve for application to product packaging that does not require the addition of a sealing lubricant. Atop a base with an opening extending through the base is an adhesive-like material layer, and a dry strap of a silicone or other release film coated membrane, all of which are of gas impervious materials. The release film coated material layer covers the opening with the release film in contact with the adhesive-like material creating a surface attraction between the release film and the adhesive-like material. An intermediate layer of gas impervious material with an opening extending through such layer may be provided. A gas pervious filter material layer may be provided to block passage of fine particulates or liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.