Tank pressure and vacuum relief device
US8171953B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2009 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Jul 1, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7838
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Particular embodiments of the present invention include devices and methods for relieving excess pressure or vacuum pressure from a tank interior. An embodiment of a pressure relief device includes a housing having an opening associated with a first end, an opening associated with a second end, and an over-pressure opening. The device further including a pressure relief valve for selectively relieving pressure from a tank, the valve including an over-pressure opening seal biased by a first pressure bias means against a pressure valve seat associated with the over-pressure opening. The device also including a guide block translatable in an axial direction of a second bore of the housing and being biased toward the pressure valve seat by a second pressure bias means. The guide block is translatable independent of the over-pressure opening seal. The device also includes a vacuum relief valve for selectively relieving vacuum pressure in the tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.