Donald D Larson

US Patent:

44468946, May 8, 1984

Filed:

May 7, 1982

Appl. No.:

6/375886

Inventors:

Donald R. Larson - Downey CA

International Classification:

B21F 3300

US Classification:

140 57

Abstract:

A clamping device specially structured to provide conformingly shaped jaws and precisely positioned, leveraged fingers adapted to bend metal fence-attaching clips into locking position around adjacent portions of wire fences and round gate posts.

US Patent:

62316990, May 15, 2001

Filed:

Jun 20, 1994

Appl. No.:

8/262168

Inventors:

Thomas J. Kelly - Cincinnati OH
Michael J. Weimer - Loveland OH
Curtiss M. Austin - Loveland OH
Blair London - San Luis Obispo CA
Donald E. Larson - North Muskegon MI
Dean A. Wheeler - North Muskegon MI

Assignee:

General Electric Company - Cinncinnati OH

International Classification:

C22F 118

US Classification:

148670

Abstract:

A gamma titanium aluminide alloy article, is prepared using a piece of a gamma titanium aluminide alloy having a composition capable of forming alpha, alpha-2, and gamma phases. The alpha transus temperature of the gamma titanium aluminide alloy piece is determined. The gamma titanium aluminide alloy piece is consolidated by hot isostatic pressing at a temperature of from about 50 F. to about 250 F. below the alpha transus temperature and at a pressure of from about 10,000 to about 30,000 pounds per square inch, for a duration of from about 1 to about 20 hours. The piece is heat treated at a temperature of from about 5 F. to about 300 F. below the alpha transus temperature for a time sufficient to refine the microstructure and generate a microstructure comprising from about 10 to about 90 volume percent gamma phase. The step of heat treating is conducted at a temperature of from about 45 F. to about 200 F.