Patents by Inventor Mark Alan Rhoads

Mark Alan Rhoads 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).

  • Publication number: 20190186598
    Abstract: A planet gear includes an annular planet gear rim having a constant inner radius along a complete axial length and an outer radius defined as the radial distance to the root of the gear teeth. The annular planet gear rim further has an average rim radius defined at a halfway point between the constant inner radius and the outer radius. The average rim radius and the rim thickness define a ratio including values in a range from and including about 4 to and including about 9. A gear assembly and turbomachine including the planet gear are disclosed.
    Type: Application
    Filed: February 25, 2019
    Publication date: June 20, 2019
    Inventors: Kennneth Lee Fisher, Darren Lee Hallman, Bugra Han Ertas, Donald Albert Bradley, Haris Ligata, William Howard Hasting, Ning Fang, Gert Johannes van der Merwe, Mark Alan Rhoads
  • Publication number: 20190048825
    Abstract: A fan system of a turbine includes a fan mid shaft made of a coated steel material configured to extend along a center axis of a turbine. The fan mid shaft having an inner diameter surface. The fan system includes a dry film lubricant that is configured to be applied to at least a portion of the inner diameter surface of the fan mid shaft.
    Type: Application
    Filed: August 11, 2017
    Publication date: February 14, 2019
    Inventors: Deepika Sachdeva, Mohammad Kashfuddoja, Jr., Anshul Kaushik, Mark Alan Rhoads, Andrew Jenkins
  • Publication number: 20170191548
    Abstract: A planet gear includes an annular planet gear ring including an annular planet gear rim. The annular planet gear rim has an inner radius and an outer radius. The inner radius and the outer radius define a rim thickness therebetween. The annular planet gear rim further has a bending stress neutral axis. The bending stress neutral axis radius and the rim thickness define a ratio including values in a range from and including about 3 to and including about 10.
    Type: Application
    Filed: December 30, 2015
    Publication date: July 6, 2017
    Inventors: Kenneth Lee Fisher, Darren Lee Hallman, Bugra Han Ertas, Donald Albert Bradley, Haris Ligata, William Howard Hasting, Ning Fang, Gert Johannes van der Merwe, Mark Alan Rhoads
  • Publication number: 20110159175
    Abstract: Disclosed herein is a method for inhibiting corrosion of a high strength steel turbine component subject to rotary stress. The method comprises applying a sacrificial overlay coating material to at least a portion of a surface of the component to form a protected component, and applying a seal material to at least a portion of the protected component to form a seal coat having a temperature resistance of greater than about 500° F. Also disclosed herein is a turbine component and corresponding engine protected by the method. Further provided is a method for repairing a high strength steel component of a turbofan engine. These methods are capable of inhibiting at least one of stress corrosion cracking or surface pitting of the turbine component after exposure to corrosive water.
    Type: Application
    Filed: December 30, 2009
    Publication date: June 30, 2011
    Inventors: Jon Raymond GROH, Thomas Allen Kauffung, Mark Alan Rhoads
  • Patent number: 7094273
    Abstract: A steel article is fabricated by providing an iron-base alloy having less than about 0.5 weight percent aluminum, melting the alloy to form a melt, adding calcium to the melt, thereafter adding aluminum to the melt to increase the aluminum content of the melt to more than about 0.5 weight percent aluminum, and casting the melt to form a casting. Other calcium additions may be made simultaneously with the adding of aluminum, and after the adding of aluminum but before casting the melt. The calcium additions deoxidize the melt to minimize the formation of clustered aluminum-oxygen-based inclusions.
    Type: Grant
    Filed: February 6, 2004
    Date of Patent: August 22, 2006
    Assignee: General Electric Company
    Inventors: Edward Lee Raymond, Mark Alan Rhoads, Glenn Charles Culbertson
  • Patent number: 6966954
    Abstract: A roller bearing that provides ball and roller bearing elements comprised of M50 steel and M50NiL steel having surface hardnesses above 60 HRC, and in the range of 65-72 HRC. The hardness in the surface region is achieved by nitriding the surface to achieve a high hardness and extended life. This improvement is brought about by controlling the microstructure of the alloy by minimizing the formation of retained austenite. The material is tempered as required. The surface is then nitrided, but the nitriding operation is carefully controlled to avoid the formation of intergranular nitrides. Because of the method used to prevent the formation of intergranular nitrides, some carbon may be present to prevent the surface of the steel from becoming depleted of carbon. The hardening element in this nitro-carburizing operation is nitrogen, which forms iron nitride as Fe3N or Fe4N intragranularly.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: November 22, 2005
    Assignee: General Electric Comany
    Inventors: Mark Alan Rhoads, Michael Gilbert Johnson, Jonothan Allen Scheetz
  • Publication number: 20040206425
    Abstract: A steel article is fabricated by providing an iron-base alloy having less than about 0.5 weight percent aluminum, melting the alloy to form a melt, adding calcium to the melt, thereafter adding aluminum to the melt to increase the aluminum content of the melt to more than about 0.5 weight percent aluminum, and casting the melt to form a casting. Other calcium additions may be made simultaneously with the adding of aluminum, and after the adding of aluminum but before casting the melt. The calcium additions deoxidize the melt to minimize the formation of clustered aluminum-oxygen-based inclusions.
    Type: Application
    Filed: February 6, 2004
    Publication date: October 21, 2004
    Inventors: Edward Lee Raymond, Mark Alan Rhoads, Glenn Charles Culbertson
  • Publication number: 20040079448
    Abstract: A roller bearing that provides ball and roller bearing elements comprised of M50 steel and M50NiL steel having surface hardnesses above 60 HRC, and in the range of 65-72 HRC. The hardness in the surface region is achieved by nitriding the surface to achieve a high hardness and extended life. This improvement is brought about by controlling the microstructure of the alloy by minimizing the formation of retained austenite. The material is tempered as required. The surface is then nitrided, but the nitriding operation is carefully controlled to avoid the formation of intergranular nitrides. Because of the method used to prevent the formation of intergranular nitrides, some carbon may be present to prevent the surface of the steel from becoming depleted of carbon. The hardening element in this nitro-carburizing operation is nitrogen, which forms iron nitride as Fe3N or Fe4N intragranularly.
    Type: Application
    Filed: October 24, 2002
    Publication date: April 29, 2004
    Applicant: General Electric
    Inventors: Mark Alan Rhoads, Michael Gilbert Johnson, Jonothan Allen Scheetz
  • Patent number: 6692550
    Abstract: A steel article is fabricated by providing an iron-base alloy having less than about 0.5 weight percent aluminum, melting the alloy to form a melt, adding calcium to the melt, thereafter adding aluminum to the melt to increase the aluminum content of the melt to more than about 0.5 weight percent aluminum, and casting the melt to form a casting. Other calcium additions may be made simultaneously with the adding of aluminum, and after the adding of aluminum but before casting the melt. The calcium additions deoxidize the melt to minimize the formation of clustered aluminum-oxygen-based inclusions.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: February 17, 2004
    Assignee: General Electric Company
    Inventors: Edward Lee Raymond, Mark Alan Rhoads, Glenn Charles Culbertson
  • Publication number: 20030185699
    Abstract: A steel article is fabricated by providing an iron-base alloy having less than about 0.5 weight percent aluminum, melting the alloy to form a melt, adding calcium to the melt, thereafter adding aluminum to the melt to increase the aluminum content of the melt to more than about 0.5 weight percent aluminum, and casting the melt to form a casting. Other calcium additions may be made simultaneously with the adding of aluminum, and after the adding of aluminum but before casting the melt. The calcium additions deoxidize the melt to minimize the formation of clustered aluminum-oxygen-based inclusions.
    Type: Application
    Filed: March 28, 2002
    Publication date: October 2, 2003
    Inventors: Edward Lee Raymond, Mark Alan Rhoads, Glenn Charles Culberston