David Franklin Lindeman

US Patent:

6548206, Apr 15, 2003

Filed:

Jun 2, 2000

Appl. No.:

09/586218

Inventors:

Michel Gauthier - La Prairie, CA
Michael K. Domroese - South St. Paul MN
Joseph A. Hoffman - Minneapolis MN
David D. Lindeman - Hudson WI
Joseph-Robert-Gaétan Noël - St-Hubert, CA
Vern E. Radewald - Austin TX
Jean Rouillard - Saint-Luc, CA
Roger Rouillard - Beloeil, CA
Toshimi Shiota - St. Bruno, CA
Jennifer L. Trice - Eagan MN

Assignee:

3M Innovative Properties Company - St. Paul MN
Hydo-Quebec Corporation - Montreal

International Classification:

H01M 1050

US Classification:

429120, 429 62, 429 66

Abstract:

An in-situ thermal management system for an energy storage device. The energy storage device includes a plurality of energy storage cells each being coupled in parallel to common positive and negative connections. Each of the energy storage cells, in accordance with the cells technology, dimensions, and thermal/electrical properties, is configured to have a ratio of energy content-to-contact surface area such that thermal energy produced by a short-circuit in a particular cell is conducted to a cell adjacent the particular cell so as to prevent the temperature of the particular cell from exceeding a breakdown temperature. In one embodiment, a fuse is coupled in series with each of a number of energy storage cells. The fuses are activated by a current spike capacitively produced by a cell upon occurrence of a short-circuit in the cell, thereby electrically isolating the short-circuited cell from the common positive and negative connections.

US Patent:

6569559, May 27, 2003

Filed:

Jul 3, 2000

Appl. No.:

09/609444

Inventors:

Roger Rouillard - Beloeil, CA
Michael K. Domroese - South St. Paul MN
Joseph A. Hoffman - Minneapolis MN
David D. Lindeman - Hudson WI
Joseph-Robert-Gaétan Noël - St-Hubert, CA
Vern E. Radewald - Austin TX
Michel Ranger - Lachine, CA
Anthony Sudano - Laval, CA
Jennifer L. Trice - Eagan MN
Thomas A. Turgeon - Fridley MN

Assignee:

3M Innovative Properties Company - St. Paul MN
Hydro-Quebec Corporation - Montreal

International Classification:

H01M 1050

US Classification:

429120, 429 66, 429178, 205347

Abstract:

An improved electrochemical generator is disclosed. The electrochemical generator includes a thin-film electrochemical cell which is maintained in a state of compression through use of an internal or an external pressure apparatus. A thermal conductor, which is connected to at least one of the positive or negative contacts of the cell, conducts current into and out of the cell and also conducts thermal energy between the cell and thermally conductive, electrically resistive material disposed on a vessel wall adjacent the conductor. The thermally conductive, electrically resistive material may include an anodized coating or a thin sheet of a plastic, mineral-based material or conductive polymer material. The thermal conductor is fabricated to include a resilient portion which expands and contracts to maintain mechanical contact between the cell and the thermally conductive material in the presence of relative movement between the cell and the wall structure. The electrochemical generator may be disposed in a hermetically sealed housing.

US Patent:

20080083998, Apr 10, 2008

Filed:

Oct 6, 2006

Appl. No.:

11/539304

Inventors:

William W. Merrill - White Bear Lake MN, US
David D. Lindeman - Hudson WI, US

International Classification:

B29D 7/01
B29D 11/00

US Classification:

264 134, 264 27

Abstract:

A method of forming an optical film includes stretching a polymer film in first draw gap of a first length along a machine direction, at a first draw ratio; and further stretching the polymer film in second draw gap along a machine direction, wherein the step of stretching in the first draw gap is isolated from the step of stretching in the second draw gap.

US Patent:

20080085383, Apr 10, 2008

Filed:

Oct 6, 2006

Appl. No.:

11/539335

Inventors:

William W. Merrill - White Bear Lake MN, US
David D. Lindeman - Hudson WI, US

International Classification:

B44F 1/10
B29D 7/01

US Classification:

428 29, 264 134

Abstract:

A method of forming an optical film results in a film having a useful central 60% portion with a caliper variation of about 5% or less of an average thickness of the film. The method includes selecting a draw ratio λ in a first in-plane stretch direction, setting an effective draw gap defined by a length L and a width W, and stretching a polymer film at the draw ratio and effective draw gap. The effective draw gap is set such that the stretching step fits into one of two regimes, the first regime referred to as a uniaxial regime and characterized by a β equal to or less than about 1.0; and the second regime referred to as a planar extension regime and characterized by a β equal to or greater than about 10.0. The disclosure also describes an optical film formed by the method.

US Patent:

20120068371, Mar 22, 2012

Filed:

Nov 23, 2011

Appl. No.:

13/303569

Inventors:

William W. Merrill - White Bear Lake MN, US
David D. Lindeman - Hudson WI, US

International Classification:

B29D 11/00

US Classification:

264 27

Abstract:

A method of forming an optical film results in a film having a useful central 60% portion with a caliper variation of about 5% or less of an average thickness of the film. The method includes selecting a draw ratio λ in a first in-plane stretch direction, setting an effective draw gap defined by a length L and a width W, and stretching a polymer film at the draw ratio and effective draw gap. The effective draw gap is set such that the stretching step fits into one of two regimes, the first regime referred to as a uniaxial regime and characterized by a β equal to or less than about 1.0; and the second regime referred to as a planar extension regime and characterized by a β equal to or greater than about 10.0. The disclosure also describes an optical film formed by the method.

US Patent:

61175846, Sep 12, 2000

Filed:

Jul 25, 1997

Appl. No.:

8/900428

Inventors:

Joseph A. Hoffman - Minneapolis MN
Michael K. Domroese - South St. Paul MN
David D. Lindeman - Hudson WI
Vern E. Radewald - Austin TX
Roger Rouillard - Beloeil, CA
Jennifer L. Trice - Eagan MN

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

H01M 650

US Classification:

429120

Abstract:

A thermal conductor for use with an electrochemical energy storage device is disclosed. The thermal conductor is attached to one or both of the anode and cathode contacts of an electrochemical cell. A resilient portion of the conductor varies in height or position to maintain contact between the conductor and an adjacent wall structure of a containment vessel in response to relative movement between the conductor and the wall structure. The thermal conductor conducts current into and out of the electrochemical cell and conducts thermal energy between the electrochemical cell and thermally conductive and electrically resistive material disposed between the conductor and the wall structure. The thermal conductor may be fabricated to include a resilient portion having one of a substantially C-shaped, double C-shaped, Z-shaped, V-shaped, O-shaped, S-shaped, or finger-shaped cross-section. An elastomeric spring element may be configured so as to be captured by the resilient conductor for purposes of enhancing the functionality of the thermal conductor.

US Patent:

61361437, Oct 24, 2000

Filed:

Feb 23, 1998

Appl. No.:

9/027866

Inventors:

Phillip M. Winter - Birchwood MN
Charles B. Dousette - Minneapolis MN
Jerome M. Fried - North Saint Paul MN
Yvonne I. Lund - Cottage Grove MN
David D. Lindeman - Hudson WI

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

B32B 3500

US Classification:

156584

Abstract:

A surface treating article including a hub. The surface treating article and hub provide an improved mechanical interlock to each other. Preferably, the unitary surface treating article is molded to the hub.

US Patent:

61209309, Sep 19, 2000

Filed:

Jul 25, 1997

Appl. No.:

8/900924

Inventors:

Roger Rouillard - Beloeil, CA
Michael K. Domroese - South St. Paul MN
Joseph A. Hoffman - Minneapolis MN
David D. Lindeman - Hudson WI
Joseph-Robert-Gaetan Noel - St-Hubert, CA
Vern E. Radewald - Austin TX
Michel Ranger - Lachine, CA
Anthony Sudano - Laval, CA
Jennifer L. Trice - Eagan MN
Thomas A. Turgeon - Fridley MN

Assignee:

3M Innovative Properties Corporation - Saint Paul MN
Hydro-Quebec - Montreal

International Classification:

H01M 1050
H01M 612
H01M 400

US Classification:

429 66

Abstract:

An improved electrochemical generator is disclosed. The electrochemical generator includes a thin-film electrochemical cell which is maintained in a state of compression through use of an internal or an external pressure apparatus. A thermal conductor, which is connected to at least one of the positive or negative contacts of the cell, conducts current into and out of the cell and also conducts thermal energy between the cell and thermally conductive, electrically resistive material disposed on a vessel wall adjacent the conductor. The thermally conductive, electrically resistive material may include an anodized coating or a thin sheet of a plastic, mineral-based material or conductive polymer material. The thermal conductor is fabricated to include a resilient portion which expands and contracts to maintain mechanical contact between the cell and the thermally conductive material in the presence of relative movement between the cell and the wall structure. The electrochemical generator may be disposed in a hermetically sealed housing.