Patents by Inventor Gregory J. Mack

Gregory J. Mack 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).

  • Abrasive blade tip
    Patent number: 5603603
    Abstract: An improved abrasive blade tip for gas turbine engines is taught, wherein an abrasive tip coating is applied to the blade tip in such a manner as to lessen wear through of the abrasive and the underlying airfoil on the leading and trailing edges, by coating the blade tip with abrasive not only on the tip surface per se, but so as to cover portions of the convex and concave airfoil surfaces at the corners where the tip surface intersects the leading and trailing edges.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: February 18, 1997
    Assignee: United Technologies Corporation
    Inventors: Roland Benoit, Eugene M. Beverly, Charles M. Love, Gregory J. Mack
  • Abrasive blade tip
    Patent number: 5551840
    Abstract: An improved abrasive blade tip for gas turbine engines is taught, wherein an abrasive tip coating is applied to the blade tip in such a manner as to lessen wear through of the abrasive and the underlying airfoil on the leading and trailing edges, by coating the blade tip with abrasive not only on the tip surface per se, but so as to cover portions of the convex and concave airfoil surfaces at the corners where the tip surface intersects the leading and trailing edges.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 3, 1996
    Assignee: United Technologies Corporation
    Inventors: Roland Benoit, Eugene M. Beverly, Charles M. Love, Gregory J. Mack
  • Turbine blade outer air seal with optimized cooling
    Patent number: 5375973
    Abstract: This disclosure describes a cooling and manufacturing enhancement for gas turbine engine outer air seals. The invention provides convective cooling in a counter-flow array, internal heat transfer augmentation through the use of boundary layer trip-strips, coolant Mach number control through the use of tapered convective channels, inter-segment purge without additional secondary cooling air, and is castable.
    Type: Grant
    Filed: December 23, 1992
    Date of Patent: December 27, 1994
    Assignee: United Technologies Corporation
    Inventors: Robert V. Sloop, George W. Kelch, Thomas A. Auxier, Gregory J. Mack
  • Acoustical anti-icing system
    Patent number: 5029440
    Abstract: Hollow inlet guide vanes in the air intake of a gas turbine engine are supplied with pressurized bleed air. The interior of the vanes are provided with orifices through which the bleed air must flow, and those orifices are tuned to a desired frequency which sets up vane vibrations. This arrangement provides deicing by both the supply of heated bleed air which impinges on the selected areas of the vanes and by the vibrations which are set up in the vanes, and it does so simply with the use of the bleed air.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: July 9, 1991
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Daryl J. Graber, Gregory J. Mack