Varinder K Kalra

US Patent:

6587351, Jul 1, 2003

Filed:

Apr 2, 2002

Appl. No.:

10/114830

Inventors:

Jeffrey Lynn Hollinsworth - Ballwin MO
Randy John Bicknese - St. Peters MO
Varinder Kumar Kalra - Chesterfield MO
Keith Allen Spalding - Fenton MO

Assignee:

Cooper Technologies - Houston TX

International Classification:

H05K 114

US Classification:

361758, 361742, 361770, 361804

Abstract:

A standoff for a printed circuit board assembly is described. The standoff comprises at least one surface configured for surface mounting to a printed circuit board.

US Patent:

6774760, Aug 10, 2004

Filed:

Jun 5, 2001

Appl. No.:

09/874453

Inventors:

Varinder K. Kalra - Chesterfield MO
Keith A. Spalding - Fenton MO
Conrad M. Reeder - Wildwood MO

Assignee:

Cooper Technologies Company - Houston TX

International Classification:

H01H 85175

US Classification:

337263, 337262, 337246, 29623

Abstract:

In an exemplary embodiment, a fuse body includes a first end, a second end and a bore extending therethrough for receiving a fuse element assembly. The bore includes a clearing portion having a first cross sectional area and a positioning portion having a second cross sectional area. The first cross sectional area is larger than the second cross sectional area. The positioning portion provides a receptacle for receiving the fuse element assembly and ensuring that the fuse element is substantially centered within the clearance portion.

US Patent:

7385475, Jun 10, 2008

Filed:

Feb 24, 2005

Appl. No.:

11/065419

Inventors:

Joan Leslie Bender - Chesterfield MO, US
Hundi Panduranga Kamath - Los Altos CA, US
Varinder Kumar Kalra - Chesterfield MO, US
Daniel Minas Manoukian - San Ramon CA, US
Peter York So - Berkeley CA, US

Assignee:

Cooper Technologies Company - Houston TX

International Classification:

H01H 85/044
H01H 85/046

US Classification:

337297, 337227, 337228, 337232

Abstract:

A low resistance fuse apparatus and methods of manufacture includes a first intermediate insulation layer, a second intermediate insulation layer, and a free standing fuse element layer independently formed and fabricated from each of the first and second intermediate insulation layers, The fuse element layer includes first and second contact pads and a fusible link extending therebetween. The first and second intermediate insulation layers extend on opposite sides of the free standing fuse element layer and are laminated together with the fuse element layer therebetween.

US Patent:

20080218305, Sep 11, 2008

Filed:

May 19, 2008

Appl. No.:

12/123220

Inventors:

Joan Leslie Bender - Chesterfield MO, US
Hundi Panduranga Kamath - Los Altos CA, US
Varinder Kumar Kalra - Chesterfield MO, US
Daniel Minas Manoukian - San Ramon CA, US
Peter York So - Berkeley CA, US

Assignee:

COOPER TECHNOLOGIES COMPANY - HOUSTON TX

International Classification:

H01H 85/04
H01H 69/02

US Classification:

337297, 29623

Abstract:

A low resistance fuse apparatus and methods of manufacture includes a first intermediate insulation layer, a second intermediate insulation layer, and a free standing fuse element layer independently formed and fabricated from each of the first and second intermediate insulation layers, The fuse element layer includes first and second contact pads and a fusible link extending therebetween. The first and second intermediate insulation layers extend on opposite sides of the free standing fuse element layer and are laminated together with the fuse element layer therebetween.

US Patent:

52353060, Aug 10, 1993

Filed:

Jul 15, 1992

Appl. No.:

7/915158

Inventors:

Varinder K. Kalra - Chesterfield MO
Vernon R. Spaunhorst - Washington MO
Keith A. Spalding - Fenton MO

Assignee:

Cooper Industries, Inc. - Houston TX

International Classification:

H01H 8504

US Classification:

337165

Abstract:

The improved fuse assembly includes a trigger assembly having an electrically nonconductive barrel for receiving a spring loaded trigger therein and a heater strip disposed along the outer circumferential surface of the barrel with a pair of end flaps. One end flap has a hole therethrough which fits over the end of the trigger adjacent the short circuit element. A second flap fits over the end of the barrel adjacent the end ferrule. The short circuit element, which is electrically and mechanically linked to a ferrule on the opposite end of the tube from the trigger assembly, engages the trigger and heater element in a solder fusing alloy.

US Patent:

54408024, Aug 15, 1995

Filed:

Sep 12, 1994

Appl. No.:

8/302999

Inventors:

Stephen Whitney - Manchester MO
Vernon Spaunhorst - Washington MO
Joan Winnett - St. Louis MO
Varinder Kalra - Chesterfield MO

Assignee:

Cooper Industries - Houston TX

International Classification:

H01H 6902

US Classification:

29623

Abstract:

A method of manufacturing a chip fuse includes the steps of depositing a plurality of columns of electrically conductive metal film on a green, unfired ceramic substrate, and disposing a plurality of wire elements on the substrate over the film columns and perpendicular to the film columns. A cover of green, unfired ceramic is bonded to the substrate over the wire elements and film columns to form a laminate. The laminate is then die cut into individual fuses, which are then fired to cure the ceramic and form an intermetallic bond between the wire elements and the metal film. End termination coatings are then applied to the fuses to facilitate connecting the fuses in an electrical circuit. The invention relates to a chip fuse manufactured according to the method.

US Patent:

61475858, Nov 14, 2000

Filed:

Jun 21, 1999

Appl. No.:

9/336735

Inventors:

Varinder K. Kalra - Chesterfield MO
Keith A. Spalding - Fenton MO

Assignee:

Cooper Technologies Company - Houston TX

International Classification:

H01H 6902
H01H 85143
H01H 85157

US Classification:

337248

Abstract:

A method for manufacturing a subminiature fuse includes the steps of applying metallized coatings to surfaces at axially opposite ends of a hollow fuse body, placing a fuse element in an internal cavity in the fuse body, the fuse element extending from the first end to the second end of the cavity, placing a one of a solder and brazing preform and end termination at each of the first and second ends of the cavity, and heating the assembled fuse body, fuse element, solder preforms and end terminations to a temperature sufficient to cause the solder preforms to bond the fuse element to the end terminations and for the end terminations to bond with the metallized end portions of the fuse body, wherein the end terminations close the ends of the cavity. A subminiature fuse according to the invention includes a fuse body with a fuse element disposed in the body. The fuse body includes metallized end portions to which the end terminations are bonded.

US Patent:

58120467, Sep 22, 1998

Filed:

Jan 30, 1997

Appl. No.:

8/792177

Inventors:

Russell Brown - Leicestershire, GB
Farid Ghaderi - Chesterfield MO
Varinder K. Kalra - Chesterfield MO
Keith A. Spalding - Fenton MO
Joan L. Winnett - Chesterfield MO
Stephen J. Whitney - Manchester MO

Assignee:

Cooper Technologies, Inc. - Houston TX

International Classification:

H01H 85044
H01H 85157
H01H 6902

US Classification:

337290

Abstract:

A method for manufacturing a subminiature fuse includes the steps of applying metallized coatings to surfaces at axially opposite ends of a hollow fuse body, placing a fuse element in an internal cavity in the fuse body, the fuse element extending from the first end to the second end of the cavity, placing a one of a solder and brazing preform and end termination at each of the first and second ends of the cavity, and heating the assembled fuse body, fuse element, solder preforms and end terminations to a temperature sufficient to cause the solder preforms to bond the fuse element to the end terminations and for the end terminations to bond with the metallized end portions of the fuse body, wherein the end terminations form hermetic seals closing the ends of the cavity. A subminiature fuse according to the invention includes a fuse body with a fuse element diagonally disposed in the body. The fuse body includes metallized end portions to which the end terminations are bonded.