Patents by Inventor Roy William Heath

Roy William Heath 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).

  • Patent number: 6666655
    Abstract: A hydraulic flow return system of a transmission pump in which primary and bypass flows of hydraulic fluid are returned to primary and bypass flow channels, respectively, of a booster nozzle situated adjacent the rotating group at the inlet of the pump for delivery a boosted flow of high pressure fluid to the pump as a result of the incoming bypass flow being passed through a flow restrictor before being recombined with the primary flow, the system is improved by incorporating a bypass valve which senses the back pressure in the incoming bypass flow and operates to open an auxiliary bypass channel in the event that the back pressure exceeds a predetermined control value in order to divert a fraction of the bypass flow around the flow restrictor for delivery to the pump until such time as the back pressure falls below the control value.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: December 23, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: Roy William Heath, Douglas D. McClain, Thomas C. Rytlewski, Rick L. Lincoln
  • 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
  • Publication number: 20030040391
    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: Application
    Filed: August 21, 2001
    Publication date: February 27, 2003
    Applicant: Delphi Technologies Inc.
    Inventors: Roy William Heath, Thomas C. Rytlewski, Douglas D. McClain, George E. Arlt
  • Patent number: 6497557
    Abstract: A sliding vane pump comprising a rotor housing having a pumping chamber, a rotor in the pumping chamber having a plurality of radially disposed slots, and a plurality of sliding vanes disposed in the slots configured to extend to follow an inner wall of said pumping chamber.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: December 24, 2002
    Assignee: Delphi Technologies, Inc.
    Inventors: David R. Aden, Thomas C. Rytlewski, Jerrod M. Etienne, David Fredrick Hammerbacher, Bruce Alan Tucker, Roy William Heath
  • Publication number: 20020168269
    Abstract: Any hydraulic flow return system of a transmission pump in which primary and bypass flows of hydraulic fluid are returned to primary and bypass flow channels, respectively, of a booster nozzle situated adjacent the rotating group at the inlet of the pump for delivery a boosted flow of high pressure fluid to the pump is a result of the incoming bypass flow being passed through a flow restrictor before being recombined with the primary flow, the system is improved by incorporating a bypass valve which senses the back pressure in the incoming bypass flow and operates to open an auxiliary bypass channel in the event that the back pressure exceeds a predetermined control value in order to divert a fraction of the bypass flow around the flow restrictor for delivery to the pump until such time as the back pressure falls below the control value.
    Type: Application
    Filed: April 19, 2002
    Publication date: November 14, 2002
    Applicant: Delphi Technologies, Inc.
    Inventors: Roy William Heath, Douglas D. McClain, Thomas C. Rytlewski, Rick L. Lincoln
  • Publication number: 20020081210
    Abstract: A sliding vane pump comprising a rotor housing having a pumping chamber, a rotor in the pumping chamber having a plurality of radially disposed slots, and a plurality of sliding vanes disposed in the slots configured to extend to follow an inner wall of said pumping chamber.
    Type: Application
    Filed: December 27, 2000
    Publication date: June 27, 2002
    Inventors: David R. Aden, Thomas C. Rytlewski, Jerrod M. Etienne, David Frederick Hammerbacher, Bruce Alan Tucker, Roy William Heath