Patents by Inventor Larry N. Moskowitz

Larry N. Moskowitz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • High density thermal spray coating
    Patent number: 5151308
    Abstract: A high density, substantially oxide-free metal layer is deposited by spray deposition on a substrate in an atmosphere containing ambient air having an oxygen content above about 0.1% by weight. This is accomplished by directing a supersonic-velocity jet stream of hot gases carrying metal particles at the substrate through an inert gas shroud. The layer is useful as a corrosion barrier and for repairing metal substrates.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: September 29, 1992
    Assignee: Amoco Corporation
    Inventors: Larry N. Moskowitz, Donald J. Lindley
  • High density thermal spray coating and process
    Patent number: 5019429
    Abstract: A high density, substantially oxide-free metal layer is deposited by spray deposition on a substrate in an atmosphere containing ambient air having an oxygen content above about 0.1% by weight. This is accomplished by directing a supersonic-velocity jet stream of hot gases carrying metal particles at the substrate through an inert gas shroud. The layer is useful as a corrosion barrier and for repairing metal substrates.
    Type: Grant
    Filed: August 11, 1989
    Date of Patent: May 28, 1991
    Assignee: Amoco Corporation
    Inventors: Larry N. Moskowitz, Donald J. Lindley
  • Apparatus and process for producing high density thermal spray coatings
    Patent number: 4869936
    Abstract: An attachment for supersonic thermal spray equipment by which inert shield gas is directed radially outwardly about the central core of a supersonic, particle-carrying flame to isolate the same from ambient atmosphere. The shield gas is injected tangentially against the inner surface of a constraining tube attached to and extending from the discharge end of the thermal spray gun nozzle, causing the shield gas to assume a helical flow path which persists until after it exits the tube and impacts the work piece. A process using the shielding apparatus with a high-velocity, thermal spray gun and employing oxygen and hydrogen as gases of combustion and inert gas to introduce metal powder, having a narrow particle size distribution and low oxygen content, into the high-velocity combustion gases, produces significantly improved, high-density, low-oxide metal coatings on a substrate.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: September 26, 1989
    Assignee: Amoco Corporation
    Inventors: Larry N. Moskowitz, Donald J. Lindley
  • Spray-and-fuse self-fluxing alloy powder coating
    Patent number: 4401724
    Abstract: A boron-containing nickel or cobalt spray-and-fuse self-fluxing alloy powder containing hard precipitates of chromium boride and, optionally, chromium carbide which are internally precipitated from a melt of said alloy is described. Said alloy powder is made by atomizing the melt at about the temperature at which the melt is viscous, and is disposed for application to metal articles to form improved coatings thereon.
    Type: Grant
    Filed: October 3, 1979
    Date of Patent: August 30, 1983
    Assignee: SCM Corporation
    Inventors: Larry N. Moskowitz, Erhard Klar
  • Process of making nickel or cobalt powder with precipitates
    Patent number: 4240824
    Abstract: A boron-containing nickel or cobalt spray-and-fuse self-fluxing alloy powder contains hard precipitates of chromium boride and, optionally, chromium carbide which are internally precipitated from a melt of said alloy. Such alloy powder is made by atomizing the melt at about the temperature at which the melt is viscous.
    Type: Grant
    Filed: October 4, 1979
    Date of Patent: December 23, 1980
    Assignee: SCM Corporation
    Inventors: Larry N. Moskowitz, Erhard Klar
  • Spray-and-fuse self-fluxing alloy powders
    Patent number: 4192672
    Abstract: A boron-containing nickel or cobalt spray-and-fuse self-fluxing alloy powder contains hard precipitates of chromium boride and, optionally, chromium carbide which are internally precipitated from a melt of said alloy. Such alloy powder is made by atomizing the melt at about the temperature at which the melt is viscous.
    Type: Grant
    Filed: January 18, 1978
    Date of Patent: March 11, 1980
    Assignee: SCM Corporation
    Inventors: Larry N. Moskowitz, Erhard Klar