Larry S Sokol

US Patent:

42738245, Jun 16, 1981

Filed:

May 11, 1979

Appl. No.:

6/038042

Inventors:

Charles C. McComas - Stuart FL
Larry S. Sokol - West Palm Beach FL

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

B32B 1518
F01D 1108
F04D 2908

US Classification:

428256

Abstract:

A method of adhering a ceramic facing material to an underlying substrate is disclosed. Substrates to which the concepts apply include unsupported low modulus, porous wire pads as well as low modulus, porous wire pads backed by a solid metallic form. The ceramic application techniques employed are centered around the impregnation of the regions of the pad to be ceramic coated with an underlayment coating, such as MCrAlY material, wherein the designation "M" stands for at least one of the elements from the iron cobalt and nickel group. Deep penetration of the underlayment material into the pad is achieved with a high velocity, spraying process. Ceramic material is applied over the underlayment material by conventional spraying techniques. Articles of manufacture which are suited to fabrication in accordance with the concepts disclosed herein include, but are not limited to, outer air seals, combustion chambers, and airfoils of gas turbine engines.

US Patent:

42772990, Jul 7, 1981

Filed:

Jun 18, 1979

Appl. No.:

6/049673

Inventors:

Joseph Cherenko - Valencia PA
William I. Frey - Curtisville PA
Joseph D. Kelly - Cheswick PA
Larry S. Sokol - West Palm Beach FL

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

B32B 1710
B32B 3104
C04B 3568

US Classification:

156242

Abstract:

A transparent safety glass laminate having an optically acceptable exposed plastic surface is fabricated by laminating an outer glass sheet and an inner preformed plastic sheet under heat and pressure with the plastic surface to be exposed supported against an optically smooth mold, preferably a second glass sheet, which is coated with an optically smooth coating of a material which acts as a release agent to facilitate separation of the plastic surface from the mold after lamination.

US Patent:

42750903, Jun 23, 1981

Filed:

Oct 15, 1979

Appl. No.:

6/085132

Inventors:

Charles C. McComas - Stuart FL
James W. Morris - Jupiter FL
Larry S. Sokol - West Palm Beach FL

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

B05D 110

US Classification:

427 34

Abstract:

A method of applying a wear resisting MCrAlY coating is comprised of plasma spraying a mixture of MCrAlY and Cr. sub. 3 C. sub. 2 powders to form a coating having both fine carbides and coarser Cr. sub. 3 C. sub. 2 carbides in an MCrAlY matrix. Heat treatment at 1080. degree. C. after coating bonds the substrate and coating and forms further fine carbides. The coating desirably consists of by weight percent 18-80 Cr, 1. 2-29 Al, up to 4. 8 Y, 0. 6-11 C, balance selected from the group consisting of Ni, Co, Fe, or mixtures thereof.

US Patent:

42359430, Nov 25, 1980

Filed:

Feb 22, 1979

Appl. No.:

6/013944

Inventors:

Charles C. McComas - Stuart FL
Larry S. Sokol - West Palm Beach FL
Earl M. Hanna - West Palm Beach FL

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

B05D 100
B05D 108

US Classification:

427 34

Abstract:

A thermal spray method capable of directing plasticized powders against a substrate for deposition of a protective coating thereon is disclosed. Various structural details of the apparatus described enable the attainment of high particle velocities without melting the particles. The method is built around the concept of reducing the temperature of a hot plasma stream after the hot plasma stream is generated. Coating particles are injected into the hot plasma stream only after the medium is cooled. In detailed embodiments, a generated plasma is cooled by the addition of a diluent gas or by passing the generated plasma through an elongated heat exchanger upstream of the point at which the powders are to be injected. The plasma is accelerated after the plasma is cooled to recover velocity lost in the cooling step.

US Patent:

42567793, Mar 17, 1981

Filed:

Jun 11, 1979

Appl. No.:

6/047437

Inventors:

Larry S. Sokol - West Palm Beach FL
Charles C. McComas - Stuart FL
Earl M. Hanna - Greenacres FL

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

B05D 108

US Classification:

427 34

Abstract:

A plasma spray method capable of directing plasticized powders against a substrate for deposition of a protective coating thereon is disclosed. Various structural details of the apparatus described enable the attainment of high particle velocities without melting the particles. The technical concepts employed are directed to normalizing the temperature of the plasma stream at a reduced value prior to the injection of coating particles. A general reduction in temperature and substantial elimination of a thermal spike at the core of the stream are achieved. Coating particles are injected into the plasma stream only after the plasma is first cooled and then preferably accelerated. In detailed embodiments, a nozzle extension assembly having a plasma cooling zone, a plasma acceleration zone, a powder injection zone and a plasma/powder discharge zone is affixed to the downstream end of a conventional plasma generator.

US Patent:

42751241, Jun 23, 1981

Filed:

Oct 15, 1979

Appl. No.:

6/085131

Inventors:

Charles C. McComas - Stuart FL
James W. Morris - Jupiter FL
Larry S. Sokol - West Palm Beach FL

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

B05D 110

US Classification:

428564

Abstract:

A protectively coated superalloy has improved oxidation, corrosion, and wear resistance at elevated temperatures. The protective coating is a MCrAlY type alloy having a carbon content of 0. 6 to 11 percent and is characterized in a preferred embodiment by having a carbon bearing matrix containing metal carbides of 1-2 microns mean size and chromium carbides of less than 12 microns. The coating is preferredly produced by plasma spraying and heat treatment.

US Patent:

53894073, Feb 14, 1995

Filed:

Oct 30, 1992

Appl. No.:

7/969528

Inventors:

Larry Sokol - Delray Beach FL

Assignee:

Sermatech International, Inc. - Limerick PA

International Classification:

B05D 306

US Classification:

427450

Abstract:

An apparatus (10) for applying a thermal spray coating onto a substrate (24) includes a chamber (16) having an open bottom portion (18), a gas source for releasing a gas lighter than oxygen into the chamber (16) and displacing the oxygen from the chamber (16), and a spray gun (30) for spraying coating through the gas in the chamber (16) and onto the substrate (24). A method is also provided including the steps of displacing oxygen from the chamber (16) with the gas, and spraying the coating through the gas and onto the substrate (24) disposed within the chamber, the gas preventing oxidation between the substrate (24) and layers of the coating.

US Patent:

42360595, Nov 25, 1980

Filed:

Nov 3, 1978

Appl. No.:

5/974666

Inventors:

Charles C. McComas - Stuart FL
Larry S. Sokol - West Palm Beach FL
Earl M. Hanna - Greenacres FL

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

B23K 900

US Classification:

219121P

Abstract:

Thermal spray apparatus capable of directing plasticized powders against a substrate for deposition of a protective coating thereon is disclosed. Various structural details of the apparatus of the present invention enable the attainment of high particle velocities without melting the particles. The apparatus is built around the concept of reducing the temperature of a hot plasma stream after the hot plasma stream is generated. Particles are injectedinto the hot plasma stream only after the medium is cooled. In detailed embodiments, a generated plasma is cooled by the addition of a diluent gas or by passing the generated plasma through an elongated heat exchanger upstream of the point at which the powders are to be injected.