Lock actuator
OwnerAke Nelanderinventor
Life of this patent
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Abstract
A service brake actuator (1), preferably for a heavy road vehicle, comprises in a housing (3, 4) a fluid actuated piston (5) with a piston rod (6). A lock actuator (2) combined with the service brake actuator comprises an axially movable push rod (13) for actuating the piston (5), a rotatable screw rod (18) in self-locking thread engagement with the push rod for axially transferring the push rod, and an electric motor (25) for rotating the screw rod (18).
Claims7
A lock actuator (2) for combination with a service brake actuator (1) for a vehicle, preferably a heavy road vehicle, the service brake actuator comprising in a housing (3, 4) a fluid actuated piston (5) with a piston rod (6), characterized in that the lock actuator (2) comprises an axially movable push rod (13) for actuating the piston (5), a rotatable member (18) in self-locking thread engagement with the push rod (13) for axially transferring the push rod (13), and an electric motor (25) for rotating the rotatable member (18).
Dependencies are inferred from the claim text.