Dale A Simard

US Patent:

8205334, Jun 26, 2012

Filed:

Nov 14, 2005

Appl. No.:

11/273057

Inventors:

Peter E. Leibfried - Vernon CT, US
John P. Arrigoni - Wallingford CT, US
Dale A. Simard - Terryville CT, US
Philip J. Dunne - Thomaston CT, US

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

B23P 6/00
B23P 19/04

US Classification:

298891, 2940206, 2940211

Abstract:

A method for repairing a component having first and second major surfaces, a thickness between the major surfaces, and an edge, is characterized by utilizing a template to determine if the component is suitable for repair, and forming a slot cut entirely through the thickness of the component. The slot extends inward from the edge of the component, has an open end at the edge of the component, a closed end within the component, a width, a radius at the closed end, and chamfered edges at the open end. Forming the slot includes forming an initial cut with a first cutting surface from the edge of the component at least to the defect, finishing the initial cut to the width and the radius with a second cutting surface, resulting in a finished cut, and chamfering the edge of the finished cut with a third cutting surface.

US Patent:

20120060370, Mar 15, 2012

Filed:

Mar 11, 2011

Appl. No.:

13/045907

Inventors:

Peter E. Leibfried - Vernon CT, US
John P. Arrigoni - Wallingford CT, US
Dale A. Simard - Terryville CT, US
Philip J. Dunne - Thomaston CT, US

Assignee:

UNITED TECHNOLOGIES CORPORATION - Hartford CT

International Classification:

B23P 6/00

US Classification:

298891, 2940201

Abstract:

A method for repairing a defect in a component having a first major surface and a second major surface, a thickness defined between the major surfaces, and an edge adjoining both the major surfaces is characterized by forming a slot cut entirely through the thickness of the component between the first and second major surfaces, the slot extending inward from the edge of the component towards an interior of the component to a depth from the edge sufficient to remove at least a substantial part of the defect, the slot defining an open end at the edge of the component, a closed end within the component, a width, a radius formed by the closed end, and opposing chamfered edges at the open end.

US Patent:

60428791, Mar 28, 2000

Filed:

Jul 2, 1997

Appl. No.:

8/887506

Inventors:

Peter J. Draghi - Simsbury CT
Brian J. Shurman - Plantsville CT
Dale A. Simard - Terryville CT
Peter Wrabel - Windsor Locks CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

B32B 3500

US Classification:

427142

Abstract:

A method for preparing a protectively coated, apertured article to be recoated reduces the likelihood that the apertures will become constricted as a consequence of subsequent recoating. The invention, described in the context of a gas turbine engine blade (12) having transpiration cooling passages (34), includes the step of diffusing an auxiliary coating (52) into an existing coating (28) and into the exposed substrate material (26) at the periphery of the passages to form a diffusion zone (54). The blade is then subjected to a stripping agent so that the diffusion zone (54) any undiffused existing coating, and any undiffused auxiliary coating are removed. The method causes a compensatory enlargement of the mouth (44) of each passage so that excess coating that accumulates in the passage mouths during subsequent recoating does not restrict the flow capacity of the passages.

US Patent:

61717118, Jan 9, 2001

Filed:

Oct 5, 1999

Appl. No.:

9/412694

Inventors:

Peter J. Draghi - Simsbury CT
Brian J. Shurman - Plantsville CT
Dale A. Simard - Terryville CT
Peter Wrabel - Windsor Locks CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

C23C 1060
C23C 402

US Classification:

428596

Abstract:

A method for preparing a protectively coated, apertured article to be recoated reduces the likelihood that the apertures will become constricted as a consequence of subsequent recoating. The invention, described in the context of a gas turbine engine blade (12) having transpiration cooling passages (34), includes the step of diffusing an auxiliary coating (52) into an existing coating (28) and into the exposed substrate material (26) at the periphery of the passages to form a diffusion zone (54). The blade is then subjected to a stripping agent so that the diffusion zone (54) any undiffused existing coating, and any undiffused auxiliary coating are removed. The method causes a compensatory enlargement of the mouth (44) of each passage so that excess coating that accumulates in the passage mouths during subsequent recoating does not restrict the flow capacity of the passages.