Patent ID: 7752935

Claim:
A hydraulic control circuit for a transmission comprising: a first solenoid that receives a first pressurized fluid flow; a second solenoid that receives a second pressurized fluid flow; a first valve assembly in communication with the first solenoid for selectively receiving the first pressurized fluid flow and in communication with the second solenoid for selectively receiving the second pressurized fluid flow; a second valve assembly in communication with the first valve assembly for selectively receiving one of the first and second pressurized fluid flows; a third valve assembly in communication with the first valve assembly for selectively receiving one of the first and second pressurized fluid flows; a first actuator in communication with the second valve assembly for selectively receiving one of the first and second pressurized fluid flows for initiating one of a first pair of a plurality of gear ratios; a second actuator in communication with the second valve assembly for selectively receiving one of the first and second pressurized fluid flows for initiating one of a second pair of the plurality of gear ratios; a third actuator in communication with the third valve assembly for selectively receiving one of the first and second pressurized fluid flows for initiating one of a third pair of the plurality of gear ratios; and a fourth actuator in communication with the third valve assembly for selectively receiving one of the first and second pressurized fluid flows for initiating one of a fourth pair of the plurality of gear ratios, wherein the first solenoid is operable to selectively communicate the first pressurized fluid flow to the first valve assembly, the second solenoid is operable to selectively communicate the second pressurized fluid flow to the first valve assembly, the first valve assembly is operable to selectively communicate the first and second pressurized fluid flows to the second and third valve assemblies, the second valve assembly is operable to selectively communicate the first and second pressurized fluid flows to the first and second actuators, and the third valve assembly is operable to selectively communicate the first and second pressurized fluid flows to the third and fourth actuators.