Patents by Inventor Dwayne V. Gronquist

Dwayne V. Gronquist 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 fluid transfer system
    Patent number: 6595228
    Abstract: A fluid transfer system and method for removing and replacing fluids in a fluid system. The fluid transfer system comprises an output hose coupled to an input line of the fluid system, and a return hose coupled to an output line of the fluid system. The fluid transfer system further comprises a low-level fluid sensor capable of being installed by an operator in a clean tank, and a high-level fluid sensor capable of being installed by the operator in a waste tank. The fluid transfer system further comprises a clean fluid pump for pumping clean fluid from the clean tank to the output hose. The fluid transfer system further comprises an operator adjustable clean fluid regulator to control a flow rate of clean fluid in the output hose, and an operator adjustable waste fluid regulator to control the flow rate of waste fluid in the return hose.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: July 22, 2003
    Assignee: Motorvac Technologies, Inc.
    Inventors: John A. Rome, Bill Kavadeles, Dwayne V. Gronquist