Patent ID: 7316140

Claim:
A lock system including a core body, a lock actuator coupled to the core body for rotation about an axis, a blocking body movable between a first position blocking rotation of the lock actuator about the axis and a second position permitting rotation of the lock actuator about the axis, a return spring that biases the blocking body toward the first position, a solenoid having a shaft that is movable between a first position in which the blocking body is locked to prevent rotation of the lock actuator about the axis and a second position in which the blocking body is unlocked to allow rotation of the lock actuator about the axis, movement of the shaft of the solenoid permitting biasing of the return spring, and a token couplable to the lock actuator, the solenoid moving the shaft from the first position to the second position after the token is coupled to the lock actuator, wherein mechanical energy transmitted through the token is stored in the return spring.