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Class Information
Number: 188/364
Name: Brakes > Operators > Fluid pressure > Road vehicle > Wheel brake operating assembly > With transversely movable internal brake > Motor between shoe ends > Dual opposed piston motor
Description: Device wherein the operator is of the type having two driven rods which separate to actuate brake shoes.

Patents under this class:

Patent Number Title Of Patent Date Issued
8235189 Drum brake apparatus Aug. 7, 2012
6276500 Brake wheel cylinders Aug. 21, 2001
5713437 Brake cylinder having efficient air bleeding Feb. 3, 1998
5531298 Brake actuator Jul. 2, 1996
5236251 Vehicle braking systems Aug. 17, 1993
5219052 Wheel cylinder boot with annular rings Jun. 15, 1993
5080202 Wheel cylinder Jan. 14, 1992
4986394 Brake actuator Jan. 22, 1991
4809588 Hydraulic piston and cylinder assemblies Mar. 7, 1989
4781276 Hydraulically actuated wheel brake with a built-in pressure control device Nov. 1, 1988
4742897 Wheel cylinder with self-contained auto-adjuster May. 10, 1988
4664232 Brake device for robot arm May. 12, 1987
4637499 Expander mechanism for an internal shoe drum brake Jan. 20, 1987
4553471 Wheel cylinder assembly with proportioner Nov. 19, 1985
4544049 Wheel cylinder assembly and seal arrangement therein Oct. 1, 1985
4537293 Hydraulic cylinder assemblies Aug. 27, 1985
4535875 Actuator for an internal shoe drum brake Aug. 20, 1985
4519482 Wedge actuated drum brake assembly May. 28, 1985
4503954 Drum brake with controlled torque and torque control valve for such a brake Mar. 12, 1985
4449757 Hydraulic actuator for a vehicle internal shoe-drum brake May. 22, 1984
4416356 Hydraulic wheel cylinder assemblies and drum brakes incorporating same Nov. 22, 1983
4415209 An integral wheel brake cylinder and pressure regulating valve Nov. 15, 1983
4374554 Duo-servo drum brake Feb. 22, 1983
4369863 Internal shoe drum brakes for vehicles Jan. 25, 1983
4363387 Wheel cylinder and torque plate construction Dec. 14, 1982
4353439 Drum brake with combined adjuster and wheel cylinder Oct. 12, 1982
4286504 Drum brake actuating device Sep. 1, 1981
4227594 Backing plate-wheel cylinder retaining clip Oct. 14, 1980
4203508 Wheel cylinder attachment May. 20, 1980
4182439 Torque member for a drum brake Jan. 8, 1980
4174026 Dash pot for a hydraulic actuator for a drum brake Nov. 13, 1979
4150736 Wheel brake assembly Apr. 24, 1979
4113073 Wheel cylinder Sep. 12, 1978
4042080 Wheel cylinder piston construction Aug. 16, 1977
4039056 Brake shoe assembly Aug. 2, 1977

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