Modulator for hydraulic brakes

Details Modulator for hydraulic brakes Modulator for hydraulic brakes

1984-10-30

1986-02-04

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

303 61, 303116, 303119, B60T 802

Patent

active

045681317

ABSTRACT:
This invention is a braking force modulator for hydraulic vehicle brakes which is intended to be inserted into the braking fluid conduit between the main cylinder or the like and one or more of the wheel braking cylinders and controlled by a sensor system for performing braking force modulation. The braking force modulator comprises a piston pump unit (12) with normally open inlet and outlet valves (37, 38) adapted to be closed under the action of a solenoid device (47, 48, 49, 52) whereby the unit is conditioned to act as a piston pump. The inlet and outlet valves (37, 38) are two mutually independent units adapted to be operated individually by one solenoid device each.

REFERENCES:
patent: 4138165 (1979-02-01), Blomberg et al.
patent: 4166657 (1979-09-01), Blomberg et al.

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