Fluid-pressure and analogous brake systems – Inertia control
Patent
1981-02-02
1982-11-16
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Inertia control
188 41, B60T 802
Patent
active
043592473
ABSTRACT:
A brake for rail vehicles comprises a working cylinder defining an accumulator chamber and a counter pressure chamber. A differential piston is movably mounted in the working cylinder and has a first piston surface communicating with the accumulator chamber and a second piston surface communicating with the counter pressure chamber. A restraining device in the form of an additional pressurized chamber communicates with another surface of the differential piston to hold the differential piston motionless. When brakes which are connected to and actuated by the differential piston, are to be activated to slow movement of the vehicle, the restraining device is partially or fully released which permits movement of the differential piston. If such movement causes too rapid a deceleration of the vehicle, the counter pressure chamber is selectively pressurized by a regulating valve to slow the movement of the differential piston and effectively partially or fully release the brakes until deceleration is reduced to acceptable limits. An inertial body is resiliently mounted for movement on the vehicle and controls the regulating valve.
REFERENCES:
patent: 3446158 (1969-05-01), Pettit
patent: 3456766 (1969-07-01), Beller
patent: 4121702 (1978-10-01), Kaufmann
Butler Douglas C.
Thyssen Industrie AG
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