Robert S Stark

US Patent:

39804976, Sep 14, 1976

Filed:

Aug 3, 1970

Appl. No.:

5/062224

Inventors:

Leland M. Gillman - Denver CO
Robert E. Stark - Littleton CO

Assignee:

The Gates Rubber Company - Denver CO

International Classification:

H01M 214

US Classification:

429145

Abstract:

A multi-layer separator for use in alkaline storage batteries is disclosed. In one aspect of the invention the separator comprises bibulous, non-membranous layers together with a coating of a relatively thin layer of a gelling agent applied to at least one side of one of the bibulous layers. In another aspect of the invention, outer bibulous, non-membranous layers sandwich and are bonded to a semi-permeable membranous layer with an adherent gelling agent to form a high-strength laminated separator. These separators find use in a variety of alkaline galvanic cells, particularly in rechargeable cells such as nickel-cadmium, nickel-zinc, silver-zinc, manganese dioxide-zinc, and similar cells.

US Patent:

40003515, Dec 28, 1976

Filed:

Jan 24, 1973

Appl. No.:

5/326212

Inventors:

Leonard F. Hug - Wheatridge CO
Phillip A. Grossman - Lakewood CO
Roland L. Young - Denver CO
Robert E. Stark - Littleton CO

Assignee:

The Gates Rubber Company - Denver CO

International Classification:

H01M 3516

US Classification:

429 94

Abstract:

An electrolytic cell pack consisting for instance of opposite polarity electrodes and alternate interposed separator is spirally wound by (a) attaching a thin flexible leader tab having a folded end to the cell pack, (b) curling the folded end of the leader tab in a spiral manner, (c) bringing a winding mandrel next to the thus formed curl and rotating the mandrel in the direction of the curled tab to thereby uncurl the leader tab and engage its folded end into a peripheral receiving portion of the mandrel, and (d) further rotating the mandrel to form the spiral wound cell pack. The described winding method is particularly suitable for spirally winding under firm stack pressure relatively small diameter cell packs such as may be required in rechargeable alkaline battery cells. The stack pressure achieved by the winding method is maintained by inserting a retainer in the axial void of the cell pack.