Patents by Inventor Harold R. Smart, Jr.

Harold R. Smart, Jr. 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).

  • Ramped dovetail rails for rotor blade assembly
    Patent number: 5993162
    Abstract: A fan blade (34) of a gas turbine engine (10) includes a pair of root rails (54) disposed on a bottom (56) of a dovetail root portion (44) thereof. The pair of root rails (54) has a wedge-shaped contour and is tapered in a decreasing cross-section from the leading edge (50) to the trailing edge (52). The root rails (54) provide a wide, stable base for the blade to minimize tangential motion during windmilling. A pair of slot rails (76) is provided on the base (70) of a dovetail-shaped slot (40) retaining the dovetail root portion (44) of the blade (34). The slot rails (76) of the dovetail slot (40) mate with the root rails (54) of the dovetail root portion (44).
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: November 30, 1999
    Assignee: United Technologies Corporation
    Inventors: Michael Weisse, David M. Daley, Harold R. Smart, Jr.
  • Ramped dovetail rails for rotor blade assembly
    Patent number: 5431542
    Abstract: A fan blade (34) of a gas turbine engine (10) includes a pair of root rails (54) disposed on a bottom (56) of a dovetail root portion (44) thereof. The pair of root rails (54) has a wedge-shaped contour and is tapered in a decreasing cross-section from the leading edge (50) to the trailing edge (52). The root rails (54) provide a wide, stable base for the blade to minimize tangential motion during windmilling. A pair of slot rails (76) is provided on the base (70) of a dovetail-shaped slot (40) retaining the dovetail root portion (44) of the blade (34). The slot rails (76) of the dovetail slot (40) mate with the root rails (54) of the dovetail root portion (44).
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: July 11, 1995
    Assignee: United Technologies Corporation
    Inventors: Michael Weisse, David M. Daley, Harold R. Smart, Jr.