Patents by Inventor Yafet Girma

Yafet Girma 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).

  • Patent number: 10626730
    Abstract: In a featured embodiment, a gas turbine engine component comprises an airfoil having a leading edge, a trailing edge, and pressure and suction side walls extending from the leading edge to the trailing edge. The airfoil extends from a base to a tip. A shelf is formed in the tip, and extends from the pressure side wall, around the leading edge, to the suction side wall.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: April 21, 2020
    Assignee: United Technologies Corporation
    Inventors: James T. Auxier, Thomas N. Slavens, Brandon S. Donnell, Yafet Girma
  • Patent number: 10145246
    Abstract: An airfoil according to an exemplary aspect of the present disclosure includes, among other things, an airfoil section having an external wall and an internal wall. The internal wall defines a first reference plane extending in a spanwise direction and through a thickness of the internal wall. A first cavity and a second cavity are separated by the internal wall. A plurality of crossover passages within the internal wall connects the first cavity to the second cavity. Each of the plurality of crossover passages defines a passage axis. The plurality of crossover passages are distributed in the spanwise direction and arranged such that the passage axis of each of the plurality of cooling passages intersects a surface of the second cavity. The plurality of crossover passages include a first set of crossover passages and a second set of crossover passages positioned on opposite sides of the first reference plane.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: December 4, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Scott D. Lewis, Yafet Girma, Christopher Corcoran
  • Patent number: 10125614
    Abstract: A component for a gas turbine engine according to an exemplary aspect of this disclosure includes a surface having a plurality of cooling holes. The surface includes a first region and a second region each having a plurality of cooling holes. The cooling holes within the first region are arranged differently than the cooling holes in the second region.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: November 13, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Dominic J. Mongillo, San Quach, Steven Bruce Gautschi, Brandon S. Donnell, Anita L. Tracy, Yafet Girma
  • Publication number: 20160298463
    Abstract: In a featured embodiment, a gas turbine engine component comprises an airfoil having a leading edge, a trailing edge, and pressure and suction side walls extending from the leading edge to the trailing edge. The airfoil extends from a base to a tip. A shelf is formed in the tip, and extends from the pressure side wall, around the leading edge, to the suction side wall.
    Type: Application
    Filed: November 5, 2014
    Publication date: October 13, 2016
    Applicant: United Technologies corporation
    Inventors: James T. Auxier, Thomas N. Slavens, Brandon S. Donnell, Yafet Girma
  • Patent number: 9453419
    Abstract: An airfoil for a gas turbine engine includes pressure and suction walls spaced apart from one another and joined at leading and trailing edges to provide an airfoil having an exterior surface that extends in a radial direction to a tip. A camber line at the tip extends from the leading edge to the trailing edge. Pressure and suction side shelves are arranged in the exterior surface on opposing sides of the camber line respectively in the pressure and suction side walls. A plateau is proud of and separates the pressure and suction side shelves. The plateau is arranged along the camber line and extends to the leading edge.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: September 27, 2016
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: James T. Auxier, Jason L. O'Hearn, Thomas N. Slavens, Yafet Girma
  • Publication number: 20160160657
    Abstract: An airfoil according to an exemplary aspect of the present disclosure includes, among other things, an airfoil section having an external wall and an internal wall. The internal wall defines a first reference plane extending in a spanwise direction and through a thickness of the internal wall. A first cavity and a second cavity are separated by the internal wall. A plurality of crossover passages within the internal wall connects the first cavity to the second cavity. Each of the plurality of crossover passages defines a passage axis. The plurality of crossover passages are distributed in the spanwise direction and arranged such that the passage axis of each of the plurality of cooling passages intersects a surface of the second cavity. The plurality of crossover passages include a first set of crossover passages and a second set of crossover passages positioned on opposite sides of the first reference plane.
    Type: Application
    Filed: August 7, 2015
    Publication date: June 9, 2016
    Inventors: Scott D. Lewis, Yafet Girma, Christopher Corcoran
  • Publication number: 20150300258
    Abstract: A component for a gas turbine engine according to an exemplary aspect of this disclosure includes a surface having a plurality of cooling holes. The surface includes a first region and a second region each having a plurality of cooling holes. The cooling holes within the first region are arranged differently than the cooling holes in the second region.
    Type: Application
    Filed: April 17, 2015
    Publication date: October 22, 2015
    Inventors: Dominic J. Mongillo, San Quach, Steven Bruce Gautschi, Brandon S. Donnell, Anita L. Tracy, Yafet Girma
  • Patent number: 9151165
    Abstract: A damper body extends between an axial first end, an opposing axial second end, a first lateral side, and an opposing second lateral side. A first pair of lugs are disposed at the first axial end and a second pair of lugs are disposed at the second axial end. In the first lug pair, a lug has an axially outermost foot which extends laterally beyond a lateral wall. The second lug pair has a lug with an axial outermost point with a foot extending laterally beyond a lateral wall. The foot on the first axial end and the foot on the second axial end are on opposed lateral sides.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: October 6, 2015
    Assignee: United Technologies Corporation
    Inventors: Brandon S. Donnell, Yafet Girma, Gina C. O'Dell