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:
Jul. 09, 1991
Filed:
Jan. 19, 1989
Steven J Stadnick, Redondo Beach, CA (US);
Howard H Rogers, Torrance, CA (US);
Hughes Aircraft Company, Los Angeles, CA (US);
Abstract
A deformable element is placed between the active plate sets of a storage battery to accommodate, by permanent compressive deformation, the swelling that occurs in the positive electrode of the plate set during extended cycling of the storage battery. The plate sets are normally supported on a core under axial compressive loading, and the swelling would otherwise deform or place a strain on the electrode connector leads, which could cause them to fail by shorting. The deformable element, preferably a modified polypropylene screen that permits the release of gas from the electrode and also is deformable in the direction perpendicular to the screen, compressively deforms to absorb the gradually increasing swelling of the positive electrode. The loading on the electrode connectors is thereby avoided or minimized, removing a major potential cause of failure.