Stephen L Andersen

US Patent:

6523387, Feb 25, 2003

Filed:

Apr 5, 2001

Appl. No.:

09/827883

Inventors:

Stephen Andersen - Oceano CA

Assignee:

E. Grant Swick - Bartlett IL

International Classification:

B21D 2810

US Classification:

72326, 29874

Abstract:

A method and apparatus for the precise manufacture of high quality, four-sided electrical contacts by means of a closely controlled material skiving process. The apparatus is designed so that the starting material from which the four-sided electrical contacts are made is closely constrained in the area of the shear boundaries so that predictable and precisely controlled shearing of the material can repeatedly be achieved to initially form four precursor sides, two of which are arcuate. The apparatus also includes sequentially operating forming mechanisms for precisely forming the precursor sides of the precursor contact into a final end product configuration.

US Patent:

6761054, Jul 13, 2004

Filed:

Nov 25, 2002

Appl. No.:

10/305340

Inventors:

Stephen Andersen - Oceano CA 93445

International Classification:

B21D 2810

US Classification:

72331, 72326, 29874

Abstract:

A method and apparatus for the precise manufacture of high quality, four-sided electrical contacts by means of a closely controlled material skiving process. The apparatus is designed so that the starting material from which the four-sided electrical contacts are made is closely constrained in the area of the shear boundaries so that predictable and precisely controlled shearing of the material can repeatedly be achieved to initially form four precursor sides, two of which are arcuate. The apparatus also includes sequentially operating forming mechanisms for precisely forming the precursor sides of the precursor contact into a final end product configuration.

US Patent:

7021977, Apr 4, 2006

Filed:

Jul 13, 2004

Appl. No.:

10/890577

Inventors:

Stephen Andersen - Oceano CA, US

International Classification:

H10R 4/02

US Classification:

439857

Abstract:

A method and apparatus for the precise manufacture of high quality, four-sided electrical contacts by means of a closely controlled material skiving process. The apparatus is designed so that the starting material from which the four-sided electrical contacts are made is closely constrained in the area of the shear boundaries so that predictable and precisely controlled shearing of the material can repeatedly be achieved to initially form four precursor sides, two of which are arcuate. The apparatus also includes sequentially operating forming mechanisms for precisely forming the precursor sides of the precursor contact into a final end product configuration.

US Patent:

40032353, Jan 18, 1977

Filed:

Oct 1, 1975

Appl. No.:

5/618597

Inventors:

Stephen Verner Andersen - Burbank CA
Edwin Grant Swick - Bartlett IL

Assignee:

Illinois Tool Works Inc. - Chicago IL

International Classification:

B21D 3102

US Classification:

72326

Abstract:

A multifinger contact device is produced by a series of deforming stations which compress the fingers into die cavities decreasing the width of the fingers while severing the adjacent fingers from one another, by deforming the adjacent fingers first in one direction and then in the other to decrease the formation of burrs. A subsequent forming station may be utilized to confine the entire periphery of the finger so as to form opposing longitudinal edges on adjacent fingers into noncontacting curved surfaces.

US Patent:

49097636, Mar 20, 1990

Filed:

Mar 1, 1988

Appl. No.:

7/162740

Inventors:

Stephen Andersen - Burbank CA

International Classification:

H01R 13115

US Classification:

439856

Abstract:

A precision apparatus for controllably shearing a thin workpiece of material to make devices such as electrical contacts of the character having specially configured spaced apart tongues adapted to mate with plug connectors of standard design. The apparatus is designed to rigidly support the workpiece except in the precise area of the shear during the entire shearing step.

US Patent:

47380268, Apr 19, 1988

Filed:

Jul 16, 1986

Appl. No.:

6/886233

Inventors:

Stephen V. Andersen - Burbank CA

International Classification:

H01R 904

US Classification:

29882

Abstract:

A precision apparatus for controllably shearing a thin workpiece of electrically conductive material to make electrical contacts of the character having specially configured spaced apart tongues adapted to mate with plug connectors of standard design. The apparatus is designed to rigidly support the workpiece except in the precise area of the shear during the entire shearing step.

US Patent:

48276120, May 9, 1989

Filed:

Feb 29, 1988

Appl. No.:

7/161766

Inventors:

Stephen Andersen - Burbank CA

International Classification:

H01R 904

US Classification:

29882

Abstract:

A precision apparatus and method for controllably shearing a thin workpiece of electrically conductive material to make electrical contacts of the character having specially configured spaced apart tongues adapted to mate with plug connectors of standard design. The apparatus is designed to rigidly support the workpiece except in the precise area of the shear during the entire shearing step.

US Patent:

39401987, Feb 24, 1976

Filed:

Mar 20, 1975

Appl. No.:

5/560420

Inventors:

Stephen Verner Andersen - Burbank CA
Edwin Grant Swick - Bartlett IL

Assignee:

Illinois Tool Works Inc. - Chicago IL

International Classification:

H01R 3900

US Classification:

339 5M

Abstract:

An integral multifinger contact with each finger being capable of flexing independently of one another while maximizing the number of independent finger contacts along a given contact line. The method involves the shearing of finger portions and elongating these portions during the shearing operation to provide a positive clearance between adjacent edges of the fingers. One embodiment of the invention being directed to a contact member particularly adapted for a rotary potentiometer while another embodiment has particular use in a linear potentiometer.

Author:

Stephen Andersen

ISBN #:

8253707916

Author:

Stephen O. Andersen

ISBN #:

0521682061

Author:

Stephen O. Andersen

ISBN #:

0521863368

Author:

Stephen O. Andersen

ISBN #:

0813300649