Patents by Inventor Thomas Egolf

Thomas Egolf 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).

  • Rotor blade tip planform
    Publication number: 20070212223
    Abstract: A main rotor blade incorporating a rotor blade tip region having a tip chord and a tip taper such that the ratio of the main rotor blade chord to the tip chord is approximately 0.30. The tip taper ratio preferably providing an approximately 28% area of reduction in said outer 10% of said blade span. The tip region preferably further including a hover optimized high lift airfoil and a tip sweep that reaches a constant value of approximately 30 degrees along the quarter chord line.
    Type: Application
    Filed: March 8, 2006
    Publication date: September 13, 2007
    Inventors: Robert Moffitt, Thomas Egolf, Robert Beatty, John Karpowich, Ashish Bagai
  • Multi-hedral rotary wing
    Publication number: 20050281676
    Abstract: A rotary-wing includes a multi-hedral tip section which utilizes a distribution of anhedral and/or dihedral angles that cause a tip vortex to be axially displaced relative to a region on a following blade such that the tip vortex generally avoids influence upon the following blade.
    Type: Application
    Filed: June 16, 2004
    Publication date: December 22, 2005
    Inventors: Thomas Egolf, Robert Moffitt
  • Aerodynamic tip protuberances for tip vortex intensity reduction
    Publication number: 20050061921
    Abstract: A vortex generator includes a multiple of vorticity generating protuberances that produce small-scale vortices that are entrained within a primary tip vortex. The small-scale vortices causes the primary tip vortex to diffuse and dissipate at a rate greater than what normally occurs, thereby reducing the intensity of the primary tip vortex.
    Type: Application
    Filed: September 19, 2003
    Publication date: March 24, 2005
    Inventor: Thomas Egolf
  • Rotational speed governor
    Patent number: 4363241
    Abstract: An improved rotational speed governor characterized by a non-linear response to speed changes, includes a control arm, the angular position of which changes in response to the rotational speed of the governor, the control arm carrying a weight held to a fixed position with respect to the control arm at speeds less than a first predetermined speed and displaced from said control arm by centrifugal force at speeds greater than that predetermined speed to effect a non-linear pivotal displacement response to the control arm.
    Type: Grant
    Filed: December 23, 1980
    Date of Patent: December 14, 1982
    Assignee: United Technologies Corporation
    Inventor: Thomas A. Egolf