James K York

US Patent:

6435085, Aug 20, 2002

Filed:

Jan 28, 2000

Appl. No.:

09/494215

Inventors:

James A. York - Concord CA 94519

International Classification:

B41F 1536

US Classification:

1011271, 1011281

Abstract:

A print screen frame assembly used in the textile screen print industry. The frame assembly is formed of electrical conduit comprised of a rigid metallic conduit material which is coated to resist solvents, dyes and other chemicals commonly used in the print screen industry. The frame member is comprised of bendable, durable conduit material formed into a desired shape and secured at a seam to form a unitary frame member. On the top side of the frame member, a taut fabric print screen is attached by an adhesive. At least one spacer with a flat bottom edge is placed on the bottom of the tubular frame member allowing print screens to be easily used in printing presses and to permit frames to be stacked on top of one another for storage purposes.

US Patent:

52915700, Mar 1, 1994

Filed:

Sep 9, 1992

Appl. No.:

7/942638

Inventors:

David M. Filgas - Walnut Creek CA
Gordon M. McFadden - Danville CA
Jeffery Broome - Livermore CA
James F. York - Tempe AZ
R. Scott Wofford - Glendale AZ

Assignee:

Hobart Laser Products, Inc. - Livermore CA

International Classification:

G02B 636

US Classification:

385 78

Abstract:

A system for coupling laser radiation at a high power to an optical fiber while dissipating heat from scattered laser and optical pump radiation, including an optical fiber, a protective ferrule surrounding a portion of the optical fiber extending from the input face of the optical fiber and welded to the fiber in the region of the input face and otherwise separated from the fiber by an air space, and a holder surrounding the ferrule to absorb scattered radiation and dissipate heat.

US Patent:

54637104, Oct 31, 1995

Filed:

Sep 9, 1992

Appl. No.:

7/942637

Inventors:

David M. Filgas - Walnut Creek CA
Gordon M. McFadden - Danville CA
Jeffrey Broome - Livermore CA
James F. York - Tempe AZ

Assignee:

Hobart Laser Products, Inc. - Livermore CA

International Classification:

G02B 636

US Classification:

385 90

Abstract:

A laser-optical fiber tuning and control system which optimizes coupling of a laser output into an optical fiber by minimizing the amount of light scattered into the fiber cladding, which provides a realtime indication of whether the radiation reaches the output end of the fiber to an emergency shut-down switch, and which provides a communications system for control of the laser from the output end of the optical fiber.