Patents by Inventor Douglas D. Mc Clain

Douglas D. Mc Clain 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).

  • Check ball filter for transmissions
    Patent number: 6637551
    Abstract: A hydraulic transmission fluid supply system for operating a transmission of a vehicle includes a hydraulic pump having an inlet and an outlet communicating with an inlet of the transmission. A filter assembly includes a filter housing having an inlet communicating with a source of hydraulic fluid and a fluid outlet communicating with the inlet of the pump. A check valve is associated with the filter housing inlet to permit only one-way flow of fluid through the system such that in the event the transmission develops an air leak, the fluid is nonetheless maintained in the system and not permitted to back flow through the system.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: October 28, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: Roy William Heath, Thomas C. Rytlewski, Douglas D. Mc Clain, George E. Arlt