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.

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.

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.

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.

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.

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.