Patent ID: 8522942

Claim:
A device for use with a vehicle including a clutch, a clutch pedal or lever, a transmission, a slave cylinder, and a master cylinder, the device for selectively disengaging the clutch from the transmission, comprising: a primary piston configured to urge hydraulic fluid into the slave cylinder, when the primary piston is moved from a first position to a second position, to thereby disengage the clutch from the transmission; wherein the primary piston is normally movable from the first position to the second position by hydraulic actuation of the master cylinder that occurs in response to actuation of the clutch pedal or lever; and a secondary piston configured to selectively apply force to the primary piston, to move the primary piston from the first position to the second position, when the secondary piston is selectively actuated independent of hydraulic actuation of the master cylinder; wherein the secondary piston is configured such that the secondary piston does not move when the primary piston moves from the first position to the second position by hydraulic actuation of the master cylinder that occurs in response to actuation of the clutch pedal or lever.