Patents by Inventor Lee E. Hansen

Lee E. Hansen 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).

  • Patent number: 5161379
    Abstract: A combustor element face plate made of a thermally highly conductive material, such as copper, has a plurality of cooling holes extending therethrough. Some of the cooling holes are located about the injector openings, while other cooling holes are located adjacent the peripheral edge of the face plate.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: November 10, 1992
    Assignee: United Technologies Corporation
    Inventors: Gregg W. Jones, J. Britt Ingram, Lee E. Hansen
  • Patent number: 5004402
    Abstract: A split casing (10) of low, coefficient of expansion material, has internal upstream facing slots (12). A semicircular shroud ring (16), of high coefficient of expansion material, carries the vanes (18), and has a tongue (20) sliding within casing slot (12). Casing stop lugs (14) and shroud stop lugs (22) have mutually abuttable surfaces (70,72) to antirotate the shroud within the casing. The distance between abuttable surfaces of the casing is greater than the distance between abuttable surfaces of the shroud ring at room temperature, but the distance are the same at the long time operating temperature.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: April 2, 1991
    Assignee: United Technologies Corporation
    Inventors: Herbert L. Burchette, Lee E. Hansen, James C. West, Glen A. Nawrocki
  • Patent number: 4834613
    Abstract: An inner shroud for a gas turbine engine is described comprising six approximately equiangular segments each segment adapted to securely contain a plurality of vane stems. The segments comprise interlocking first and second sections forming a channel having an aperture suitably sized to securely contain the vane stem. The sections when fit together form an outer recess area suitably sized to substantially accommodate the button portion of the vane stem and an inner cavity suitably sized to accommodate the inner portion of the vane stem. This results in reduced shroud curling when used in a split case compressor.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: May 30, 1989
    Assignee: United Technologies Corporation
    Inventors: Lee E. Hansen, William R. Ulrich
  • Patent number: 4806247
    Abstract: A reliable flow rate plasmapheresis system includes a rotating enhanced vortex type of membrane filter coupled to receive a flow of anticoagulated whole blood and separate concentrate and filtrate in responses thereto. An anticoagulant pump is coupled to mix controlled amounts of anticoagulant with the input blood flow. Degradation of plasma flow rate during multiple extraction-reinfusion cycles is inhibited by selecting the starging anticoagulant pH value and controlling the anticoagulant flow rate relative to the whole blood to establish a final whole blood/plasma pH value in the range of 6.8 to 7.2, with an anticoagulant to blood ratio in the range of 1:6 to 1:25.
    Type: Grant
    Filed: July 29, 1987
    Date of Patent: February 21, 1989
    Assignee: Baxter International Inc.
    Inventors: Donald W. Schoendorfer, Lee E. Hansen
  • Patent number: 4737076
    Abstract: A cylindrically shaped spacer between a shaft and hub of a turbine rotor of a gas turbine engine as fabricated from a flexible resilient material and interference fitted at discrete points on either side of the transverse axis of the spacer between the shaft and spacer and between the hub and spacer to impart a twist of the spacer about this axis to remain in contact with the hub and shaft throughout its entire rotating envelope.
    Type: Grant
    Filed: October 20, 1986
    Date of Patent: April 12, 1988
    Assignee: United Technologies Corporation
    Inventors: George A. Bonner, Lee E. Hansen, Jack W. Wilson, Jr.
  • Patent number: 4713176
    Abstract: A reliable flow rate plasmapheresis system includes a rotating enhanced vortex of membrane filter coupled to receive a flow of anticoagulated whole blood and separate concentrate and filtrate in response thereto. An anticoagulant pump is coupled to mix controlled amounts of anticoagulant with the input blood flow. Degradation of plasma flow rate during multiple extraction-reinfusion cycles is inhibited by selecting the starting anticoagulant pH value and controlling the anticoagulant flow rate relative to the whole blood to establish a final whole blood/plasma pH value in the range of 6.8 to 7.2, with an anticoagulant to blood ratio in the range of 1:6 to 1:25.
    Type: Grant
    Filed: April 12, 1985
    Date of Patent: December 15, 1987
    Assignee: Hemascience Laboratories, Inc.
    Inventors: Donald W. Schoendorfer, Lee E. Hansen
  • Patent number: 4464167
    Abstract: This invention relates to an improvement in two-port centrifuge bowls in which component yield is enhanced by utilizing the centrifuge bowl for eluttriation, as well as centrifugation. In a particular embodiment, platelet yield is improved by terminating flow of anticoagulated whole blood from the donor to the bowl and pumping low density fluid, preferably plasma, back into the bowl at a relatively high rate to elutriate centrifugally separated cells in the bowl.
    Type: Grant
    Filed: August 1, 1983
    Date of Patent: August 7, 1984
    Assignee: Haemonetics Corporation
    Inventors: Donald W. Schoendorfer, Lee E. Hansen
  • Patent number: 4416654
    Abstract: This invention relates to an improvement in two-port centrifuge bowls in which component yield is enhanced by utilizing the centrifuge bowl for eluttriation, as well as centrifugation. In a particular embodiment, platelet yield is improved by terminating flow of anticoagulated whole blood from the donor to the bowl and pumping low density fluid, preferably plasma, back into the bowl at a relatively high rate to elutriate centrifugally separated cells in the bowl.
    Type: Grant
    Filed: September 3, 1981
    Date of Patent: November 22, 1983
    Assignee: Haemonetics Corporation
    Inventors: Donald W. Schoendorfer, Lee E. Hansen