Eveready Battery Company, Inc.

Other

Union Carbide Corporation

Manuel R Malay

Thomas J O'Hara, Iii

Alan D Ayers

Robert E Ray

Earl J Chaney, Jr

Eulogio R Sioson

Wilfredo M Paras

Disclosed is an electrochemical cell using a gasket with projections on both surfaces of an upstanding wall. When used as a seal member between two parts of the housing of an electrochemical cell, a plurality of high compressive stress areas is formed in the gasket wall. When projections on opposite sides of the gasket are not horizontally aligned, an effective seal can be achieved with a thinner-wall gasket, providing more internal cell volume for active materials. Also disclosed is a process for assembling the cell.

Electrochemical cell with improved gasket and seal

A battery comprising a steel can having a bottom end, an open top end, and side walls extending between the top and bottom ends. Positive and negative electrodes are disposed in the can. An outer cover is disposed over the open end of the can. The outer cover has an outer flange disposed on the outside of the can walls and an inner flange disposed on the inside of the can wall. A seal is disposed between the can and the outer cover so that the seal is disposed against the inner and outer flanges of the outer cover. The outer cover is preferably crimped against the can wall to compress the seal between the inner and outer flanges and the container, thereby minimizing axial loading on the can and allowing for use of a thin gauge can.

Method for assembling a battery having cover assembly

Battery construction having cover assembly

A miniature galvanic cell employing a cell housing comprising a beaded cup, wherein the bead is disposed at the vicinity of the open end of the cup, and a low profile can and gasket assembly are used so that effectively the majority of the cross-section thickness of the vertical portion of the cell is attributed to only the thickness of the wall of the cup so that maximum internal volume of the cell is reserved for the active components. A process for producing the novel housing is also disclosed.

Beaded electrode cup for a miniature galvanic cell

A resealable vent closure for an electrochemical cell comprising a disk seal having a first upstanding wall to define an opening to accommodate a current collector rod of a cell and having vent grooves disposed in the first wall, and having a second upstanding peripheral wall with vent channels and said second wall being crimped between a cover for the cell and the top edge of a container containing the active components of the cell to thereby produce a sealed cell that is resealable.

Galvanic cell having a resealable vent closure

A miniature galvanic cell employing a cover-gasket assembly in which the gasket component occupies less than 8% of the internal volume of the cell and a process for producing the galvanic cell.

Miniature galvanic cell having optimum internal volume for the active

A syringe comprising an outer tube for housing a needle/needle gasket assembly, an inner tube closed at one end by a gasket which cooperated with the needle gasket assembly for advancing and projecting the needle out of the outer tube and retracting the needle into the outer assembly when finished, and wherein the inner tube can function as a container for transporting any fluid drawn into the inner tube. The syringe can also be adapted for multiple extractions of fluid using an evacuation collection tube.

Multiple purpose syringe

A non-resealable vent closure for a galvanic cell, such as a nonaqueous cell, which comprises a seal member force-fitted with a bushing having an upper portion terminating with a thinner walled lower portion and wherein said seal member is force-fitted within the lower portion of the bushing and the bushing is seated within and seals the vent orifice in the housing of the cell.

Electrochemical cell having a safety vent closure

Liquid cathode electrochemical cells have means for biasing a consumable metal anode against a separator and resultingly against a cathode collector. The biasing means contacts the active anode metal throughout the discharge of the cell.

Liquid cathode electrochemical cells having insured anode to tab contact

A galvanic cell having a closure member which contains a resealable vent comprising the inwardly turned peripheral edge portion of the cell container and a closure member having a resilient peripheral lip and a resilient annular flange, the low profile construction of which allows for increased amounts of reactive material to be placed within the cell container.

Growing community of inventors

Brunswick, OH, United States of America

Manuel R Malay