Patents by Inventor Hsianmin F. Jen

Hsianmin F. Jen 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).

  • Method of scavenging oil within a gas turbine engine
    Patent number: 7373780
    Abstract: An oil scavenge system includes a tangential scavenge scoop and a settling area adjacent thereto which separately communicate with a duct which feeds oil into an oil flow path and back to an oil sump. A shield is mounted over the settling area to at least partially shield the collecting liquid oil from interfacial shear. A multiple of apertures are located through the shield to permit oil flow through the shield and into the duct. The scavenge scoop forms a partition which separates the duct into a first portion and a second portion. The first portion processes upstream air/oil mixture that is captured by the tangential scoop while the second portion receives the oil collected in the settling area.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: May 20, 2008
    Assignee: United Technologies Corporation
    Inventors: Robert E. Peters, Dwayne Messerschmidt, J. Axel Glahn, Kenneth L. Allard, Hsianmin F. Jen, Larry W. Spires, Roger M. Barnsby
  • Bifurcated oil scavenge system for a gas turbine engine
    Patent number: 6996968
    Abstract: An oil scavenge system includes a tangential scavenge scoop and a settling area adjacent thereto which separately communicate with a duct which feeds oil into an oil flow path and back to an oil sump. A shield is mounted over the settling area to at least partially shield the collecting liquid oil from interfacial shear. A multiple of apertures are located through the shield to permit oil flow through the shield and into the duct. The scavenge scoop forms a partition which separates the duct into a first portion and a second portion. The first portion processes upstream air/oil mixture that is captured by the tangential scoop while the second portion receives the oil collected in the settling area.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: February 14, 2006
    Assignee: United Technologies Corporation
    Inventors: Robert E. Peters, Dwayne Messerschmidt, J. Axel Glahn, Kenneth L. Allard, Hsianmin F. Jen, Larry W. Spires, Roger M. Barnsby
  • Rotating turbine stator
    Patent number: 4455121
    Abstract: Hot spots in the first stage turbine nozzles of small and medium sized engines are eliminated by spinning the nozzle assembly which consists of an annular hub circumscribed by a nozzle diaphragm having an inner and outer shroud ring between which are a multiplicity of symmetrically positioned vanes of airfoil design. Power to turn the nozzle assembly is obtained by connecting it to a rotary-type, vaned diffuser stage which lies in radial alignment with the impeller of the engine compressor. The rotary diffuser and nozzle combination is configured to turn at 50-1,000 rpm enabling the combined assembly to be mounted on unlubricated ceramic bearings.
    Type: Grant
    Filed: November 1, 1982
    Date of Patent: June 19, 1984
    Assignee: Avco Corporation
    Inventor: Hsianmin F. Jen