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:
Jun. 20, 1995
Filed:
Dec. 03, 1993
Gary A Bayles, Pittsburgh, PA (US);
George D Leap, Plum Boro, PA (US);
Westinghouse Electric Corporation, Pittsburgh, PA (US);
Abstract
A separator for use in a silver-iron battery is provided having a case and a cover within which are disposed a positive silver electrode and negative iron electrode. A separator is provided between these two electrodes. The separator includes alternating layers of a low density, radiation-grafted polyethylene layer provided adjacent the silver electrode and a cellophane film layer provided adjacent the polyethylene layer. Additional alternating layers of polyethylene and cellophane film can be provided as desired. The separator of the present invention blocks migration of the silver ion while maintaining low resistance to electrolytic transfer. The separator of the present invention provides for improved low temperature performance for silver-iron battery cells.