The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 20, 1977
Filed:
Oct. 26, 1976
Applicant:
Inventor:
Terry Glen Messing, Verona, WI (US);
Assignee:
ESB Incorporated, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429 86 ; 296231 ;
Abstract
A battery is at least partially enclosed by a wrapper comprising a composite of a gas pervious plastic layer and a gas impervious layer. The gas impervious layer has a fracture wide enough to permit the transmission of gases, and the width of the fracture can be maintained at a predetermined and desired size. The combination of the gas pervious plastic layer and the fracture in the gas impervious layer provides a system for regulating the species of gases that enter and/or exit from the battery, as well as the rate at which such gas transmissions occur. The gas impervious layer may be a thin metal foil, preferably of aluminum.