Releasable pressure vents
US4965144A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1989 |
| Grant date | Oct 23, 1990 |
| Priority date | — |
| Expiry date | Dec 5, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A resealable pressure vent for a container such as a battery container having a wall containing an aperture connecting the interior of the container with the atmosphere comprising a cover member in the form of a metal plate which is spot welded at its center to the center of the wall of the container. The aperture is located in the wall away from the center thereof and an elastic O-ring is interposed between the metal plate and container wall such that the O-ring seals the aperture from the exterior of the container. In the event of excess pressure within the container, the O-ring is displaced by the said excess pressure to vent the container and the O-ring returns to its original sealing position when the excess pressure is relieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.