Istvan J Toth

Author:

Istvan Gyorgy Toth

ISBN #:

0521845467

Author:

Istvan Gyorgy Toth

ISBN #:

0521855535

US Patent:

44119402, Oct 25, 1983

Filed:

Apr 12, 1982

Appl. No.:

6/367277

Inventors:

Thomas Derkacs - Mayfield OH
Charles W. Fetheroff - Willowick OH
Istvan M. Matay - North Royalton OH
Istvan J. Toth - Richmond Heights OH

Assignee:

TRW Inc. - Cleveland OH

International Classification:

B64C 100
B32B 300
B32B 312

US Classification:

428 73

Abstract:

Although the method and apparatus of the present invention can be utilized to apply either a uniform or a nonuniform covering of material over many different workpieces, the apparatus (20) is advantageously utilized to apply a thermal barrier covering (64) to an airfoil (22) which is used in a turbine engine. The airfoil is held by a gripper assembly (86) while a spray gun (24) is effective to apply the covering over the airfoil. When a portion of the covering has been applied, a sensor (28) is utilized to detect the thickness of the covering. A control apparatus (32) compares the thickness of the covering of material which has been applied with the desired thickness and is subsequently effective to regulate the operation of the spray gun to adaptively apply a covering of a desired thickness with an accuracy of at least plus or minus 0. 0015 of an inch (1. 5 mils) despite unanticipated process variations.

US Patent:

44728662, Sep 25, 1984

Filed:

Mar 1, 1982

Appl. No.:

6/353403

Inventors:

Donald J. Moracz - Garfield Heights OH
Charles R. Cook - Euclid OH
Istvan J. Toth - Richmond Heights OH

Assignee:

TRW Inc. - Cleveland OH

International Classification:

B21K 304
B23P 1502
B23P 1504

US Classification:

291568B

Abstract:

An improved method of making an airfoil includes stacking plies in two groups. A separator ply is positioned between the two groups of plies. The groups of plies and the separator ply are interconnected to form an airfoil blank. The airfoil blank is shaped, by forging or other methods, to have a desired configuration. The material of the separator ply is then dissolved or otherwise removed from between the two sections of the airfoil blank to provide access to the interior of the airfoil blank. Material is removed from inner sides of the two separated sections to form core receiving cavities. After cores have been placed in the cavities, the two sections of the airfoil blank are interconnected and the shaping of the airfoil is completed. The cores are subsequently removed from the completed airfoil.

US Patent:

43584713, Nov 9, 1982

Filed:

Feb 26, 1981

Appl. No.:

6/238213

Inventors:

Thomas Derkacs - Mayfield OH
Charles W. Fetheroff - Willowick OH
Istvan M. Matay - North Royalton OH
Istvan J. Toth - Richmond Heights OH

Assignee:

TRW Inc. - Cleveland OH

International Classification:

B05D 112
B05D 104
B05D 106
B05D 102

US Classification:

427 9

Abstract:

Although the method and apparatus of the present invention can be utilized to apply either a uniform or a nonuniform covering of material over many different workpieces, the apparatus (20) is advantageously utilized to apply a thermal barrier covering (64) to an airfoil (22) which is used in a turbine engine. The airfoil is held by a gripper assembly (86) while a spray gun (24) is effective to apply the covering over the airfoil. When a portion of the covering has been applied, a sensor (28) is utilized to detect the thickness of the covering. A control apparatus (32) compares the thickness of the covering of material which has been applied with the desired thickness and is subsequently effective to regulate the operation of the spray gun to adaptively apply a covering of a desired thickness with an accuracy of at least plus or minus 0. 0015 inches (1. 5 mils) despite unanticipated process variations.

US Patent:

45832749, Apr 22, 1986

Filed:

Sep 20, 1984

Appl. No.:

6/652759

Inventors:

Donald J. Moracz - Garfield Heights OH
Charles R. Cook - Euclid OH
Istvan J. Toth - Richmond Heights OH

Assignee:

TRW Inc. - Cleveland OH

International Classification:

B21K 304
B23P 1502
B23P 1504

US Classification:

291568B

Abstract:

An improved method of making an airfoil includes stacking plies in two groups. A separator ply is positioned between the two groups of plies. The groups of plies and the separator ply are interconnected to form an airfoil blank. The airfoil blank is shaped, by forging or other methods, to have a desired configuration. The material of the separator ply is then dissolved or otherwise removed from between the two sections of the airfoil blank to provide access to the interior of the airfoil blank. Material is removed from inner sides of the two separated sections to form core receiving cavities. After cores have been placed in the cavities, the two sections of the airfoil blank are interconnected and the shaping of the airfoil is completed. The cores are subsequently removed from the completed airfoil.

US Patent:

43344950, Jun 15, 1982

Filed:

Jul 11, 1978

Appl. No.:

5/923693

Inventors:

Thomas Derkacs - Mayfield OH
Charles W. Fetheroff - Willowick OH
Istvan M. Matay - North Royalton OH
Istvan J. Toth - Richmond Heights OH

Assignee:

TRW Inc. - Cleveland OH

International Classification:

B05B 314
B05B 1200

US Classification:

118669

Abstract:

Although the method and apparatus of the present invention can be utilized to apply either a uniform or a nonuniform covering of material over many different workpieces, the apparatus (20) is advantageously utilized to apply a thermal barrier covering (64) to an airfoil (22) which is used in a turbine engine. The airfoil is held by a gripper assembly (86) while a spray gun (24) is effective to apply the covering over the airfoil. When a portion of the covering has been applied, a sensor (28) is utilized to detect the thickness of the covering. A control apparatus (32) compares the thickness of the covering of material which has been applied with the desired thickness and is subsequently effective to regulate the operation of the spray gun to adaptively apply a covering of a desired thickness with an accuracy of at least plus or minus 0. 0015 inches (1. 5 mils) despite unanticipated process variations.