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US 2003/0215698 A1Published application
Battery vent and pressure blowout relief frit
AssigneeCompagnie Plastic Omnium
InventorBernd Schulte-Ladbeck
Life of this patent
Estimating the term…
Abstract
The present invention is directed to an improvement in a battery cover having a vent opening, the improvement is a frit that has two functions; namely, it acts to allow gases to escape while preventing liquid to escape and in addition acts as a blowout disk when a pressure within the battery exceeds a predetermined pressure that blows the frit out of the cover preventing the explosion of the battery.
Claims15
A battery cover comprising:
- a frit that allows gases to escape while preventing liquid to escape and acts as a blowout disk when a pressure within said battery exceeds a predetermined pressure that blows said frit out of said cover preventing the explosion of the battery;
- and
- restraining means for holding said frit in said cover until said predetermined pressure is exceeded
A battery cover comprising:
- a modified polytetrafluoroethylene frit that allows gases to escape while preventing liquid to escape and acts as a blowout disk when a pressure within said battery exceeds a predetermined pressure that blows said frit out of said cover preventing the explosion of the battery;
- and
- an O-ring for holding said frit in said cover until said predetermined pressure within said battery is exceeded blowing said frit out of said cover.
A battery cover comprising:
- a modified polytetrafluoroethylene frit that allows gases to escape while preventing liquid to escape;
- and
- a housing for holding said frit in said cover until a pressure within said battery exceeds a predetermined pressure that blows said frit out of said cover.
A battery cover comprising:
- a modified polytetrafluoroethylene frit that allows gases to escape while preventing liquid to escape and acts as a blowout disk when a pressure within said battery exceeds a predetermined pressure that blows said frit out of said cover preventing the explosion of the battery;
- and
- a lip on said cover for holding said frit in said cover until a pressure within said battery exceeds said predetermined pressure that blows said frit out of said cover.
Dependencies are inferred from the claim text.