Patents by Inventor James Patrick May

James Patrick May 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).

  • Electronically controlled viscous fan drive with bushing
    Patent number: 8602190
    Abstract: A viscous shear fan drive mechanism for a cooling fan. A moveable valve disk is provided which controls the quantity of fluid in the operating chamber. An electronic actuation system activates piston and shaft members which move the valve disk against the bias of a return spring to open the fill holes, allow fluid communication between the reservoir and working chambers, and allow rotation of the cooling fan. Without activation of the electronic actuation system, the flow of fluid to the working chamber is prevented. A non-magnetic or insulating bushing member adjacent the piston and shaft members prevents the system from sticking in the actuation condition when power is eliminated.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: December 10, 2013
    Assignee: BorgWarner Inc.
    Inventor: James Patrick May
  • ELECTRONICALLY CONTROLLED VISCOUS FAN DRIVE WITH BUSHING
    Publication number: 20110168512
    Abstract: A viscous shear fan drive mechanism for a cooling fan. A moveable valve disk is provided which controls the quantity of fluid in the operating chamber. An electronic actuation system activates piston and shaft members which move the valve disk against the bias of a return spring to open the fill holes, allow fluid communication between the reservoir and working chambers, and allow rotation of the cooling fan. Without activation of the electronic actuation system, the flow of fluid to the working chamber is prevented. A non-magnetic or insulating bushing member adjacent the piston and shaft members prevents the system from sticking in the actuation condition when power is eliminated.
    Type: Application
    Filed: April 30, 2009
    Publication date: July 14, 2011
    Inventor: James Patrick May