The Gillette Company

James R Costanzo

Paul Albert Christian

Richard Edward Durkot

Dean MacNeil

Steven Jeffrey Specht

Lifun Lin

George M Cintra

Alexander Boris Shelekhin

David Lloyd Anglin

Philip D Trainer

Robert Yoppolo

Francis Wang

Mark T Ashbolt

Matthew R Sylvestre

Anthony Joseph Malgioglio

Derek R Bobowick

Brien Merrill

Robert S Ferrin

An alkaline cell having a flat casing, preferably of cuboid shape. The cell can have an anode comprising zinc and a cathode comprising nickel oxyhydroxide. The casing can have a relatively small overall thickness, typically between about 5 and 10 mm, but may be larger. Cell contents can be supplied through an open end in the casing and an end cap assembly inserted therein to seal the cell. The end cap assembly includes a vent mechanism, preferably a grooved vent, which can activate, when gas pressure within the cell reaches a threshold level typically between about 250 and 800 psig (1724&#xd7;10and 5515&#xd7;10pascal gage). The cell can have a supplemental vent mechanism such as a laser welded region on the surface of the casing which may activate at higher pressure levels.

Alkaline cell with flat housing and nickel oxyhydroxide cathode

A primary alkaline battery includes a cathode including a nickel oxyhydroxide and an anode including zinc or zinc alloy particles. Performance of the nickel oxyhydroxide alkaline cell is improved by adding zinc fines to the anode.

Alkaline battery including nickel oxyhydroxide cathode and zinc anode

An anode includes zinc particles. At least about 30% by weight of the zinc particles are spherical.

Anode for battery

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Danbury, CT, United States of America

James R Costanzo