Karl R Anderson

US Patent:

60854170, Jul 11, 2000

Filed:

Jun 29, 1998

Appl. No.:

9/106498

Inventors:

Karl Rudolph Anderson - Naperville IL
Gerald Richard Crawmer - Clifton Park NY
Edward Kenneth Ellis - Bangor ME
John Francis Nolan - Latham NY
Louis Patrick Earvolino - Holliston MA
Robert Ellis Seeley - Broadalbin NY
Joseph John Pepe - Ballston Lake NY
Robert Joseph Christoffel - Schenectady NY
Joseph Louis Van Ullen - Loudonville NY

Assignee:

General Electric Co. - Schenectady NY

International Classification:

B23P 1500

US Classification:

298891

Abstract:

A method for repairing the rim of a steam turbine rotor, and a weld material for repairing such rotors. The method generally includes the steps of removing a damaged rim and its associated dovetail region, so as to form a surface at the perimeter of the rim portion. A weld repair region is then formed on the surface, which is machined to reconstruct the rim portion and the dovetail region exclusively with the weld repair region. Thereafter, an appropriately configured blade is secured to the rim portion with the dovetail region. The method is particularly intended for the repair of a steel alloy rotor, such as a NiCrMoV, NiMoV and CrMoV alloy, while the weld repair is formed with a nickel-base superalloy whose mechanical and thermal properties are compatible with the repair method and the steel alloy over a broad temperature range.

US Patent:

41567587, May 29, 1979

Filed:

Aug 9, 1978

Appl. No.:

5/932153

Inventors:

Donald R. Vissers - Naperville IL
Zygmunt Tomczuk - Orland Park IL
Karl E. Anderson - Westchester IL
Michael F. Roche - Downers Grove IL

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

H01M 636

US Classification:

429112

Abstract:

A high-temperature, secondary electrochemical cell that employs FeS as the positive electrode reactant and lithium or lithium alloy as the negative electrode reactant includes an improved electrolyte composition. The electrolyte comprises about 60-70 mole percent LiCl and 30-40 percent mole percent KCl which includes LiCl in excess of the eutectic composition. The use of this electrolyte suppresses formation of the J phase and thereby improves the utilization of positive electrode active material during cell cycling.

US Patent:

58237453, Oct 20, 1998

Filed:

Aug 1, 1996

Appl. No.:

8/691276

Inventors:

Karl Rudolph Anderson - Naperville IL
Gerald Richard Crawmer - Clifton Park NY
Edward Kenneth Ellis - Bangor ME
John Francis Nolan - Latham NY
Louis Patrick Earvolino - Holliston MA
Robert Ellis Seeley - Broadalbin NY
Joseph John Pepe - Ballston Lake NY
Robert Joseph Christoffel - Schenectady NY
Joseph Louis Van Ullen - Loudonville NY

Assignee:

General Electric Co. - Schenectady NY

International Classification:

F04D 2934

US Classification:

416213R

Abstract:

A turbine rotor comprising a radially-inward portion of a steel alloy and a radially-outward rim portion circumscribing the radially-inward portion, the rim portion being formed by a weldment that includes a nickel-base superalloy region joining the rim portion to the inward portion of the turbine rotor, the nickel-base superalloy having a room temperature ultimate tensile strength of at least about 690 MPa.