Patents by Inventor Roger Ma

Roger Ma 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).

  • Annular injector assembly and methods of assembling same
    Patent number: 9228740
    Abstract: An annular injector is described. The injector includes a first bayonet assembly and a second bayonet assembly each including a terminal end and a tip end. The second bayonet assembly is configured to be concentrically coupled at least partially about the first bayonet assembly. An outer diameter of the first bayonet assembly and an inner diameter of the second bayonet assembly vary at the tip end to define a first substantially annular nozzle. The first bayonet assembly includes a maximum outer diameter that is greater than a minimum inner diameter of the second bayonet assembly and at least a portion of at least one of the first bayonet assembly and the second bayonet assembly extends from the tip end to the terminal end. The injector includes a third bayonet assembly configured to be concentrically coupled at least partially about the second bayonet assembly to define a second substantially annular nozzle.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: January 5, 2016
    Assignee: General Electric Company
    Inventors: John Saunders Stevenson, Robert Michael Zirin, Raymond Douglas Steele, Constantin Bugescu, Roger Ma, David R. Matthews, Kenneth M. Sprouse
  • ANNULAR INJECTOR ASSEMBLY AND METHODS OF ASSEMBLING SAME
    Publication number: 20140124604
    Abstract: An annular injector is described. The injector includes a first bayonet assembly and a second bayonet assembly each including a terminal end and a tip end. The second bayonet assembly is configured to be concentrically coupled at least partially about the first bayonet assembly. An outer diameter of the first bayonet assembly and an inner diameter of the second bayonet assembly vary at the tip end to define a first substantially annular nozzle. The first bayonet assembly includes a maximum outer diameter that is greater than a minimum inner diameter of the second bayonet assembly and at least a portion of at least one of the first bayonet assembly and the second bayonet assembly extends from the tip end to the terminal end. The injector includes a third bayonet assembly configured to be concentrically coupled at least partially about the second bayonet assembly to define a second substantially annular nozzle.
    Type: Application
    Filed: January 15, 2014
    Publication date: May 8, 2014
    Inventors: John Saunders Stevenson, Robert Michael Zirin, Raymond Douglas Steele, Constantin Bugescu, Roger Ma, David R. Matthews, Kenneth M. Sprouse
  • Annular injector assembly and methods of assembling the same
    Patent number: 8662408
    Abstract: An annular injector is described. The injector includes a first bayonet assembly and a second bayonet assembly each including a terminal end and a tip end. The second bayonet assembly is configured to be concentrically coupled at least partially about the first bayonet assembly. An outer diameter of the first bayonet assembly and an inner diameter of the second bayonet assembly vary at the tip end to define a first substantially annular nozzle. The first bayonet assembly includes a maximum outer diameter that is greater than a minimum inner diameter of the second bayonet assembly and at least a portion of at least one of the first bayonet assembly and the second bayonet assembly extends from the tip end to the terminal end. The injector includes a third bayonet assembly configured to be concentrically coupled at least partially about the second bayonet assembly to define a second substantially annular nozzle.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: March 4, 2014
    Assignee: General Electric Company
    Inventors: John Saunders Stevenson, Robert Michael Zirin, Raymond Douglas Steele, Constantin Bugescu, Roger Ma, David R. Matthews, Kenneth M. Sprouse
  • ANNULAR INJECTOR ASSEMBLY AND METHODS OF ASSEMBLING THE SAME
    Publication number: 20120037732
    Abstract: An annular injector is described. The injector includes a first bayonet assembly and a second bayonet assembly each including a terminal end and a tip end. The second bayonet assembly is configured to be concentrically coupled at least partially about the first bayonet assembly. An outer diameter of the first bayonet assembly and an inner diameter of the second bayonet assembly vary at the tip end to define a first substantially annular nozzle. The first bayonet assembly includes a maximum outer diameter that is greater than a minimum inner diameter of the second bayonet assembly and at least a portion of at least one of the first bayonet assembly and the second bayonet assembly extends from the tip end to the terminal end. The injector includes a third bayonet assembly configured to be concentrically coupled at least partially about the second bayonet assembly to define a second substantially annular nozzle.
    Type: Application
    Filed: August 11, 2010
    Publication date: February 16, 2012
    Applicant: General Electric Company
    Inventors: John Saunders Stevenson, Robert Michael Zirin, Raymond Douglas Steele, Constantin Bugescu, Roger Ma, David R. Matthews, Kenneth M. Sprouse