Edward J Ryan

US Patent:

47008814, Oct 20, 1987

Filed:

Dec 20, 1984

Appl. No.:

6/684397

Inventors:

Edward J. Ryan - Wallingford CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

B23K 2000

US Classification:

228194

Abstract:

The bonding of materials by the transient liquid phase process is improved through the use of multiple boronized interlayer foils. By providing the interlayer in the form of multiple foils a reservoir of liquid material is formed during the bonding process which eliminates the previously encountered porosity. The use of multiple foils is especially appropriate when bonding fine grained materials.

US Patent:

41411242, Feb 27, 1979

Filed:

Aug 29, 1977

Appl. No.:

5/828370

Inventors:

Edward J. Ryan - Wallingford CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

B23P 1904
B23P 700

US Classification:

29427

Abstract:

Disclosed is an improved method and apparatus for removing damaged or worn vanes which are brazed or otherwise metallurgically attached between the concentric inner and outer shroud members of a gas turbine compressor stator. The method involves punching one of the attached vane ends in the radial direction relative to the concentric shroud members with sufficient force to shear the metallurgical joints holding the vane in the shroud slots. During punching, the shroud members are rigidly supported against deformation in the vicinity of the attached vane ends and the vane itself is supported laterally to prevent buckling thereof. With the invention, a stator can be repaired with no diminution in structural strength as compared to a new part. A punch and die assembly for use in removing a damaged vane is also disclosed.

US Patent:

47255099, Feb 16, 1988

Filed:

Feb 18, 1986

Appl. No.:

6/830779

Inventors:

Edward J. Ryan - Wallingford CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

B32B 1504
B23K 3528

US Classification:

428607

Abstract:

A filler metal material particularly suited for brazing titanium base articles is described. In a preferred embodiment, the material is characterized by a central portion of titanium, and adjacent layers of copper and nickel. The solidus and liquidus temperatures of the filler metal are about 925. degree. and 945. degree. C. , respectively.

US Patent:

44090544, Oct 11, 1983

Filed:

Jan 14, 1981

Appl. No.:

6/225074

Inventors:

Edward J. Ryan - Wallingford CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

B29C 1900
B32B 3100
B32B 312
B23K 3524

US Classification:

156293

Abstract:

Honeycomb structures, such as those used in turbine engine abradable seals, are provided with a uniform density filling of a suitable abradable material. The abradable material is prepared as a tape preform using an organic binder. The preform is forced into the honeycomb using a rubber tool.

US Patent:

45460477, Oct 8, 1985

Filed:

May 2, 1983

Appl. No.:

6/490949

Inventors:

Edward J. Ryan - Wallingford CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

B22F 300
B22F 700

US Classification:

428565

Abstract:

Honeycomb structures, such as those used in turbine engine abradable seals, are provided with a uniform density filling of a suitable abradable material. The abradable material is prepared as a tape preform using an organic binder. The preform is forced into the honeycomb using a rubber tool.

US Patent:

42791219, Jul 21, 1981

Filed:

Oct 3, 1979

Appl. No.:

6/081515

Inventors:

Edward J. Ryan - Wallingford CT
David A. Rutz - Manchester CT
Jack W. Lee - Palm Beach Gardens FL

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

D02G 100
B32B 1502
B32B 1504

US Classification:

57258

Abstract:

Fabrication techniques for making nickel boron stranded wire braze preforms are described. The techniques involve the provision of the wire material in a stranded form having a large surface to volume ratio. This general form consists of a plurality of fine wires, having the desired cross-sectional area, which may be twisted or braided to produce the preform.