Pressure actuator

Details Pressure actuator Pressure actuator

B - Operations, Transporting

60

T

303/73

B60T 8/42 (2006.01) B60T 8/48 (2006.01) F16D 7/02 (2006.01)

Patent

CA 2016377

PRESSURE ACTUATOR Abstract of the Disclosure A pressure actuator for a vehicle braking system is provided. The actuator has a frame with fluid connections with a pressurized fluid source and a wheel cylinder. A piston is slidably mounted inside an interior bore of the frame. A nut is associated with the piston for moving the piston. A drive screw is threadably engaged with the nut. A motor is provided for powering the drive screw in response to a signal given by a controller. A gear train is provided having at least one gear connected with the first drive screw and another gear being connected with the motor for transmitting torque from the motor to the first drive screw. One of the gears has an inner hub and an outer ring with spring means preventing relative motion between the hub and the ring unless a predetermined torque value is exceeded whereby the hub has angular rotation with respect to the ring.

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