Patents by Inventor Ken R. Lagueux

Ken R. Lagueux 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).

  • Thermal coating composition
    Patent number: 6180262
    Abstract: An abrasive coating is prepared by plasma spraying a top coating over a bond coating medium. The resultant structure has an improved resistance to corrosion, and a lower thermal conductivity. The coating provides substantially enhanced engine efficiency and improved durability.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: January 30, 2001
    Assignee: United Technologies Corporation
    Inventors: Melvin Freling, Ken R. Lagueux, Paul H. Zajchowski
  • Active clearance control with cruise mode
    Patent number: 5090193
    Abstract: Flow of cooling air to a thermal clearance control system in a gas turbine engine is selectably scheduled between a normal power level versus clearance schedule and an increased efficiency cruising schedule. Selection of the cruising schedule is accompanied by a limitation on the rate of engine power increase during the period when the cruise schedule is selected.
    Type: Grant
    Filed: June 23, 1989
    Date of Patent: February 25, 1992
    Assignee: United Technologies Corporation
    Inventors: Fred M. Schwarz, Clifton J. Crawley, Jr., Anthony F. Rauseo, Ken R. Lagueux
  • Method for protecting gas turbine engine seals
    Patent number: 5088885
    Abstract: A method for preventing rubbing between a gas turbine engine rotor and surrounding annular shroud during transient changes in engine power monitors high rotor speed for determining the existence of a thermal mismatch between the rotor and shroud supporting turbine case (9). The method directs the cooling flow modulating valve (44) to substantially shut off the flow of cooling air to the case (9) for a period of time sufficient to allow the thermal mismatch to pass.
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: February 18, 1992
    Assignee: United Technologies Corporation
    Inventors: Fred M. Schwarz, Ken R. Lagueux
  • Clearance control method for gas turbine engine
    Patent number: 5005352
    Abstract: A method for scheduling the flow of cooling air to a gas turbine engine achieves a varying clearance between the turbine blade tips and surrounding annular shroud responsive to the current engine power level. Excess clearance is provided during operation at less than maximum normal engine power to accommodate the transient decrease in clearance following a step change in engine power level.
    Type: Grant
    Filed: June 23, 1989
    Date of Patent: April 9, 1991
    Assignee: United Technologies Corporation
    Inventors: Fred M. Schwarz, Clifton J. Crawley, Jr., Anthony Rausco, Ken R. Lagueux