James J Wu

6605383, Aug 12, 2003

Nov 22, 2000

09/721250

James Xixian Wu - North Olmsted OH

Eveready Battery Company, Inc. - St. Louis MO

H01M 202

429185, 429163, 429164, 429174

An adhesive closure for sealing closed the open end of an electrochemical cell container. The electrochemical cell comprises a can having an open end and a side wall, and positive and negative electrodes disposed in the can. The cell also has a cover disposed on the open end of the can and having a peripheral wall radially outside of the side wall of the can. One or more adhesives are disposed between the outer side wall of the can and the peripheral wall of the cover for adhering the cover to the can.

6855454, Feb 15, 2005

Dec 20, 2001

10/034687

James Xixian Wu - North Olmsted OH, US

Eveready Battery Company, Inc. - St. Louis MO

H01M002/12
H01M002/26
H01M002/08

429 54, 429 57, 429171, 429185

A low profile collector and seal assembly for sealing the open end of a container of an electrochemical cell and providing venting of pressurized gases. An electrochemical cell has a can with a closed bottom end and an open top end, positive and negative electrodes disposed in the can, and a collector and seal assembly disposed in the open top end of the can for closing the open top end of the can. The collector and seal assembly includes a current collector and an annular seal that move relative to each other from a sealed position to a vented position when the internal cell pressure reaches a pressure threshold to vent pressurized gases.

6861174, Mar 1, 2005

May 15, 2003

10/439096

James X. Wu - North Olmsted OH, US

Eveready Battery Company, Inc. - St. Louis MO

H01M002/08
H01M002/12
H01M004/00

429174, 429 53, 429 94, 429161, 429175, 429181, 429185

An electrochemical battery cell comprising a metal container with an open end closed with a metal cover. The top portion of the container side wall has a torus above an inward necked area, and the cover has a flange shaped around the outside of the torus and extending into the necked area. The inside diameter of the cover flange is smaller than the outside diameter of the torus, so that the cover is locked onto the top of the can. The components sealing the top of the cell require a small volume so that the internal volume for active materials and electrolyte is large. The cell can be closed and sealed with little downward force on the can side wall below the neck, allowing use of a thinner can.

7122270, Oct 17, 2006

Oct 21, 2004

10/970323

James Xixian Wu - North Olmsted OH, US

Eveready Battery Company, Inc. - St. Louis MO

H01M 2/12
H01M 2/26
H01M 2/08

429 54, 429 57, 429171, 429185

A low profile collector and seal assembly for sealing the open end of a container of an electrochemical cell and providing venting of pressurized gases. An electrochemical cell has a can with a closed bottom end and an open top end, positive and negative electrodes disposed in the can, and a collector and seal assembly disposed in the open top end of the can for closing the open top end of the can. The collector and seal assembly includes a current collector and an annular seal that move relative to each other from a sealed position to a vented position when the internal cell pressure reaches a pressure threshold to vent pressurized gases.

7618742, Nov 17, 2009

Jan 28, 2005

11/045900

David A. Kaplin - Mayfield Heights OH, US
James X. Wu - North Olmsted OH, US

Eveready Battery Co., Inc. - St. Louis MO

H01M 2/14
H01M 2/18

429130, 429129, 429131

An electrochemical battery cell with an electrical lead for electrical contact between one of the cell's electrodes and the side of the cell container. A portion of the lead, disposed between the electrode assembly and the side wall of the container, includes an initially non-planar shape that is in a partially deformed, compressed configuration within the cell to bias the lead against the internal surface of the side wall of the container, thereby applying sufficient force to provide good electrical contact between the electrode and the container. The initially non-planar shape can include one or more V-shaped or arc-shaped grooves, and the grooves can be disposed parallel to a longitudinal axis of the electrode assembly. Also disclosed is a process for making such a cell.

7687189, Mar 30, 2010

Apr 28, 2004

10/833549

James X. Wu - North Olmsted OH, US
Richard A. Langan - Parma OH, US

Eveready Battery Company, Inc. - St. Louis MO

H01M 2/12
H01M 10/34

429 56, 429 53, 429 57

An electrochemical cell with a collector assembly for sealing the open end of a cell container. The collector assembly includes a retainer and a contact spring with a peripheral flange, each having a central opening therein. A pressure release vent member disposed between the retainer and the peripheral flange of the contact spring seals the openings in the retainer and contact spring under normal conditions and ruptures to release pressure from within the cell when the internal pressure exceeds a predetermined limit.

7824790, Nov 2, 2010

May 16, 2008

12/121977

James X. Wu - North Olmsted OH, US
Richard A. Langan - Parma OH, US

Eveready Battery Co., Inc. - St. Louis MO

H01M 2/12
H01M 10/34

429 56, 429 53, 429 57

An electrochemical cell with a collector assembly for sealing the open end of a cell container. The collector assembly includes a retainer and a contact spring with a peripheral flange, each having a central opening therein. A pressure release vent member disposed between the retainer and the peripheral flange of the contact spring seals the openings in the retainer and contact spring under normal conditions and ruptures to release pressure from within the cell when the internal pressure exceeds a predetermined limit.

7833647, Nov 16, 2010

Jun 8, 2006

11/449113

Jeannine L. Martinson - Bay Village OH, US
Richard A. Langan - Parma OH, US
James X. Wu - North Olmsted OH, US

Eveready Battery Company, Inc. - St, Louis MO

H01M 2/12

429 56

A closure assembly and rupturable vent seal adapted for use in an electrochemical battery cell is disclosed. The vent seal includes a series of peripheral projections that can be folded to insure proper sealing of the vent without wrinkles or overlapping folded portions. Methods of accomplishing the invention are also contemplated.