Patents by Inventor David L. Kurtz

David L. Kurtz 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).

  • Carbon seal O-ring cavity sizing
    Patent number: 9869391
    Abstract: A carbon seal assembly includes a carbon seal element disposed about a central axis and that extends between a first end and a second end. The carbon seal element includes an inner step surface at an axial distance H1 with regard to the first end. An o-ring is adjacent to the inner step surface. The o-ring includes a cross-section diameter D2 such that a ratio H1/D2 is between 1.60-1.73.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: January 16, 2018
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Paul T. Litis, David J. Avery, Gregory P. Smith, John R. Gunn, David L. Kurtz, IV, Kevin Brut
  • CARBON SEAL O-RING CAVITY SIZING
    Publication number: 20130200570
    Abstract: A carbon seal assembly includes a carbon seal element disposed about a central axis and that extends between a first end and a second end. The carbon seal element includes an inner step surface at an axial distance H1 with regard to the first end. An o-ring is adjacent to the inner step surface. The o-ring includes a cross-section diameter D2 such that a ratio H1/D2 is between 1.60-1.73.
    Type: Application
    Filed: August 3, 2012
    Publication date: August 8, 2013
    Inventors: Paul T. Litis, David J. Avery, Gregory P. Smith, John Gunn, David L. Kurtz, Kevin Brut
  • Snap-fit dart and adapter
    Patent number: 5899824
    Abstract: The present invention involves a dart having a dart shaft that can be snap-fit into a corresponding dart barrel. The dart shaft has a cylindrical projection that terminates in a flange having indentations or detents on its peripheral surface. The dart barrel has a recess; flexible elongated arms extending into the recess of the dart barrel, removed from the walls of the dart barrel for clasping the dart shaft. The arms have indents or detents corresponding to the indents or detents of the projection, and the arms flex on and off the cylindrical projection of the dart shaft as the indents and detents are aligned and adjusted. The invention further relates to an adapter that can be used to modify a conventional threaded dart into the snap-fit dart of the present invention.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: May 4, 1999
    Assignee: Accudart Corporation
    Inventors: David L. Kurtz, Frank Bilotta, Harry Kicks
  • Fins for a game dart
    Patent number: D425572
    Type: Grant
    Filed: July 28, 1997
    Date of Patent: May 23, 2000
    Assignee: Accudart, Inc.
    Inventor: David L. Kurtz
  • Fins for a game dart
    Patent number: D425943
    Type: Grant
    Filed: July 28, 1997
    Date of Patent: May 30, 2000
    Assignee: Accudart, Inc.
    Inventor: David L. Kurtz