US 5,395,714 AGranted

Alkaline cells that employ low expansion zinc in the anode

AssigneeEveready Battery Company, Inc.

InventorRobert F. Scarr

Life of this patent

Estimating the term…

Abstract

Alkaline cells are substantially free of mercury, employ a zinc anode and do not exhibit leakage after discharge through an electrical resistor to 1.2 volts and then stored under storage conditions of 21.degree. C. for ninety days.

Claims1

Dependent claims

An electrochemical cell comprising an alkaline electrolyte, a cathode comprising manganese dioxide as an active cathode component, and an anode gel comprised of low expansion zinc which has a gel expansion of less than 25% after being discharged for 161 minutes to 15% depth of discharge at 2.88A, and a sealed container containing said electrolyte, cathode and anode gel.

Dependencies are inferred from the claim text.

Facts

Application: 08/255,158Filed 7 Jun 1994 · continuation
Priority: 14 Aug 1990
Granted: 7 Mar 1995
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H01M 6/04
Primary cells; Manufacture thereof: cells with aqueous electrolyte
H01M 4/244
Electrodes for alkaline accumulators: zinc electrodes
H01M 4/62
Electrodes composed of, or comprising, active material: selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H01M 4/628
Selection of inactive substances as ingredients for active masses, e.g. binders, fillers: inhibitors, e.g. gassing inhibitors, corrosion inhibitors

Family

Serial566,925Parent of this continuation · filed 14 Aug 1990
Serial82,147Parent of this continuation · filed 25 Jun 1993
US 5,395,714 AThis patent

From the US filing history. Foreign family members aren’t listed.

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