Patents by Inventor Stephen J. Scroggie

Stephen J. Scroggie 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).

  • Vehicle window washer with washer fluid temperature responsive pressure control
    Patent number: 5012977
    Abstract: A vehicle window washer in which the pump outlet pressure is varied in an inverse manner with temperature of the washer fluid so as to maintain a more consistent fluid deposit on the window as fluid viscosity changes with temperature. In particular, it uses a motor driven pump which provides a higher pump outlet pressure with the motor driven in a first direction than with the motor driven in the opposite direction and switches activation of the motor between the two directions based on sensed temperature of the fluid in the washer fluid reservoir.
    Type: Grant
    Filed: September 18, 1989
    Date of Patent: May 7, 1991
    Assignee: General Motors Corporation
    Inventors: Elgin J. Karklins, Stephen J. Scroggie, Steven L. Tracht, Mark W. Striker