Richard L Bouffard from 290 Beach St, Litchfield, CT 06759, age 79, Phone: 8605675450

Battery Can Having Off-Center C-Shaped Vent
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US Patent:

7875376, Jan 25, 2011
Filed:

May 24, 2006
Appl. No.:

11/439758
Inventors:

John C. Stearns - Medina OH, US
Robert E. Ray - Strongsville OH, US
Richard L. Bouffard - Litchfield CT, US
Walter B. Ebner - Terryville CT, US
John O'Halloran - Cheshire CT, US
R. Justin Begg - Brunswick OH, US
Assignee:

Eveready Battery Company, Inc. - St. Louis MO
International Classification:

H01M 2/12
B65D 51/16
US Classification:

429 56, 22020301
Abstract:

An electrochemical cell is provided with an enhanced pressure relief vent formed in a closed end of the cell container that allows for effective venting of gas from the closed end of the container. The cell includes a container having a first end, a second end, a side wall extending between the first and second ends, and an end wall extending across the first end. The cell has a positive electrode, a negative electrode, and an aqueous alkaline electrolyte, all disposed in the container. The cell further includes a pressure relief vent mechanism having an offset C-shaped reduced thickness groove formed in the end wall of the container. A cover can be welded to the closed end wall of the container over the pressure relief vent mechanism.

Battery Cell With Improved Pressure Relief Vent
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US Patent:

8076015, Dec 13, 2011
Filed:

Jan 31, 2007
Appl. No.:

11/700638
Inventors:

Richard L. Bouffard - Litchfield CT, US
Peter M. Lewis - Avon Lake OH, US
Huaxin Li - Rochester Hills MI, US
Warren Emerson Sweet - Naugatuck CT, US
James X. Wu - North Olmsted OH, US
Assignee:

Eveready Battery Company, Inc. - St. Louis MO
International Classification:

H01M 2/12
H01M 2/08
US Classification:

429 56, 429 82, 429174
Abstract:

An electrochemical cell with a pressure relief vent formed in a metal plate disposed in at least one of the closed end and the open end of the container. The pressure relief vent has an annular ring that includes a reduced thickness groove, interrupted in at least two places by unthinned sections of the plate. When the vent opens to relieve pressure from within the cell, the area of the plate within the annular ring remains attached to the remainder of the plate by at least one of the unthinned sections. A can with such a pressure relief vent formed in the can bottom is useful as an electrochemical cell container.

Battery Container Having Cruciform Vent And Cover
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US Patent:

8158280, Apr 17, 2012
Filed:

May 24, 2006
Appl. No.:

11/440309
Inventors:

Robert E. Ray - Strongsville OH, US
John C. Stearns - Medina OH, US
Walter B. Ebner - Terryville CT, US
Richard L. Bouffard - Litchfield CT, US
R. Justin Begg - Brunswick OH, US
Assignee:

Eveready Battery Company, Inc. - St. Louis MO
International Classification:

H01M 2/00
H01M 2/02
H01M 2/38
H01M 2/12
US Classification:

429163, 429164, 429 72, 429 53, 429 82
Abstract:

An electrochemical cell is provided with an enhanced pressure relief vent formed in a closed end of the cell container that achieves effective venting of gas from the closed end of the container. The electrochemical cell including a container having a first end, a second end, a side wall extending between the first and second ends, and an end wall extending across the first end. The cell has a positive electrode, a negative, and an aqueous alkaline electrolyte, all disposed in the container. The cell further includes a pressure relief vent having a reduced thickness groove formed in the end wall of the container. The reduced thickness groove is formed having eight segments extending radially from a central location. A cover is welded on the end wall of the container via at least three welds, wherein the angular spacing between two adjacent welds is greater than 120.

Battery Can Having Off-Center Vent
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US Patent:

8268468, Sep 18, 2012
Filed:

Jan 17, 2011
Appl. No.:

13/007745
Inventors:

John C. Stearns - Medina OH, US
Robert E. Ray - Strongsville OH, US
Richard L Bouffard - Litchfield CT, US
Walter B Ebner - Terryville CT, US
John O'Halloran - Cheshire CT, US
R. Justin Begg - Brunswick OH, US
Assignee:

Eveready Battery Company, Inc. - St. Louis MO
International Classification:

H01M 2/12
B65D 51/16
US Classification:

429 56, 22020301
Abstract:

An electrochemical cell is provided with an enhanced pressure relief vent formed in a closed end of the cell container that allows for effective venting of gas from the closed end of the container. The cell includes a container having a first end, a second end, a side wall extending between the first and second ends, and an end wall extending across the first end. The cell has a positive electrode, a negative electrode, and an aqueous alkaline electrolyte, all disposed in the container. The cell further includes a pressure relief vent mechanism having an offset C-shaped reduced thickness groove formed in the end wall of the container. A cover can be welded to the closed end wall of the container over the pressure relief vent mechanism.

Battery Cell With Improved Pressure Relief Vent
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US Patent:

20040157115, Aug 12, 2004
Filed:

Feb 11, 2003
Appl. No.:

10/365197
Inventors:

Richard Bouffard - Litchfield CT, US
Peter Lewis - Avon Lake OH, US
Huaxin Li - Rochester Hills MI, US
Paul Elsdon - Wolcott CT, US
Richard Sosnovich - Beacon Falls CT, US
Warren Sweet - Naugatuck CT, US
Robert Ray - Strongsville OH, US
James Wu - North Olmsted OH, US
International Classification:

H01M002/12
H01M002/02
US Classification:

429/056000, 429/082000, 429/176000, 220/367100
Abstract:

An electrochemical cell with a pressure relief vent formed in a metal plate disposed in at least one of the closed end and the open end of the container. The pressure relief vent has an annular ring that includes a reduced thickness groove, interrupted in at least two places by unthinned sections of the plate. When the vent opens to relieve pressure from within the cell, the area of the plate within the annular ring remains attached to the remainder of the plate by at least one of the unthinned sections. A can with such a pressure relief vent formed in the can bottom is useful as an electrochemical cell container.

System And Process For Forming Battery Cans
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US Patent:

20060159989, Jul 20, 2006
Filed:

Jan 19, 2005
Appl. No.:

11/039424
Inventors:

Richard Bouffard - Litchfield CT, US
Assignee:

Truelove & Maclean, Inc. - Waterbury CT
International Classification:

H01M 2/02
B21C 23/00
B21D 11/10
US Classification:

429164000, 072256000, 072379400
Abstract:

A process for producing a battery can in a transfer press comprises drawing a metal cup in a first station to form an elongated cylinder, ironing the elongated cylinder in a second station, and redrawing the elongated cylinder in a third station. In either or both the drawing and ironing steps, the cup or the elongated cylinder may be processed in more than one station. The process includes a final redraw station for redrawing the cylinder so as to roughen the inner surface of the battery can to improve its electrical properties.