Battery construction with provision for venting its contents

Claim 1

A SEALED BATTERY INCLUDING PROVISIONAL FOR PREVENTING AN EXPLOSION IF THE MATERIAL PRESSURE EXCEEDS A PREDETERMINED LIMIT BY PERMITTING THE BATTERY CONTENTS TO EXCAPE RAPIDLY, SAD BATTERY COMPRISNG: A CASING HAVING AN OPENING AT ONE END THEREOF AND DEFINING A CAVITY FOR THE ELECTRO-CHEMICAL CONTENTS OF THE BATTERY, BATTERY CONTENTS CONFINED WITHIN SAID CAVITY INCLUDING ELECROCHEMICAL MEANS FOR GENERATING AN ELECRICAL CURRENT AND CAPABLE OF GENERATING SUFFICIENT INTERNAL PRESSURE TO CAUSE A VIOLENT EXPLOSION OF SAID BATTERY, A RIGID PARTITION DISPOSED ACROSS THE OPENING IN SAID CASING AND DEFINING AN APERTURE THROUGH WHICH SAID BATTERY CONTENTS CAN ESCAPE, AND COVER MEANS SEALING SAID OPENING AND COVERING SAID APERTURRE FOR CONTAINING SAID BATTERY CONTENTS UNDER NORMAL CONDITIONS AND FOR RAPIDLY RELEASING SAID BATTER CONTENTS IF SAID PREDETERMINED PRESSURE LIMIT IS REACHED, SAID COVER MEANS INCLUDING A METAL PLATE WHICH IS ELETAVILY SOFT AD BENDABLE IN COMPARISON TO SAID PARTITION AND WHICH OVERLIES SAID PARTITION SAID PLATE BEING WELDED TO SAID PARTITION AT, AT LEAST ONE PREDETERMINED CONFINED A LOCATION SPACED FROM ITS PERIMETER, SAID PLATE TEARING WHERE WELDED TO PERMIT THE RAPID RELEASE OF THE CONTENTS OF THE BATTERY WHEN THE PRESSURE LIMIT IS REACHED.