Patents by Inventor John D. Dalpiaz

John D. Dalpiaz 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).

  • Variable displacement pump
    Patent number: 6468044
    Abstract: A variable displacement pump (28) having a combination inlet port (71) and an outlet (76) formed integrally on the rear body (32). By integrating the combination inlet port (71) and outlet (76) on the rear body (32), this invention simplifies the manufacture of the pump (28) as compared with known variable displacement pumps.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: October 22, 2002
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Leonard F. Bishop, Shawn P. Cap'ser, John D. Dalpiaz
  • Variable displacement pump with electronic control
    Patent number: 6408975
    Abstract: A variable displacement pump 28 having an electronically modulated solenoid relief valve 100 for controlling fluid flow into the pump 28. An engine control module coupled to the electronic relief valve 100 monitors vehicle speed and steering wheel turning rate change directs the solenoid relief valve 100 to adjust the pressure of fluid displacing a movable cam ring 44 within the pump 28 to provide for greater fluid flow when evasive maneuvers may be required and lesser fluid flow when low steering efforts are needed, thus resulting in energy and fuel savings.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: June 25, 2002
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Leonard F. Bishop, Shawn P. Cap'ser, John D. Dalpiaz