Patents by Inventor Michael D. Foster

Michael D. Foster 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: 7002267
    Abstract: The present invention is drawn to a method and apparatus for cooling a hybrid transmission electric motor. More precisely, an annular chamber is formed between a housing for the electric motor and a transmission housing. Coolant is disposed in the annular chamber and is applied to the electric motor through a plurality of coolant apertures in the motor housing to cool the motor.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: February 21, 2006
    Assignee: General Motors Corporation
    Inventors: James A. Raszkowski, Edward L. Kaiser, Anthony P. Tata, Kyle K. Kinsey, Joel E. Mowatt, William S. Reed, Michael D. Foster
  • Patent number: 6910493
    Abstract: Hydraulic fill and drain of a clutch chamber is controlled with a blocking valve and a trim valve. The blocking valve selectively provides pressurized fluid to the trim valve which in turn selectively provides the pressurized fluid to the clutch chamber. Exhausting of the clutch chamber is effected through one of two alternate paths utilizing deactivation of one of the trim and blocking valves. Back up exhausting of the clutch chamber is effected through the other of the alternative paths. Such system allows for determination of valve failures and continued operation until such failures can be rectified.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: June 28, 2005
    Assignee: General Motors Corporation
    Inventors: Michael D. Foster, Todd M Steinmetz
  • Patent number: 5702588
    Abstract: A method of separating soap fibers from the liquid phase component of grease to prepare the fibers for microscopic analysis includes the steps of admixing a sample of the grease with a solvent to remove the liquid phase component from the fibers and provide a final liquid product having the fibers in suspension therein, contacting the final product with a pair of spaced electrodes, applying a direct voltage across the electrodes to charge the same positive and negative respectively, and withdrawing for analysis a small quantity of the final product from a region thereof proximate the negative electrode after the voltage has been applied for a predetermined energization period. The withdrawn quantity may be deposited on a polished carbon stub and further prepared for analysis by a scanning electron microscope.
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: December 30, 1997
    Assignee: Semtech, Inc.
    Inventors: Michael R. Funk, Larry E. Irwin, Michael D. Foster