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.

 
Web www.patentalert.com

< Reaction product of polyamine, acyclic carbonate and cyclic carbonate

> Green glass composition

> Circuit board and method of manufacture thereof

~ 00588