Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1988-06-03
1989-04-18
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303100, 303119, B60T 832, B60T 842, B60T 1366
Patent
active
048221147
ABSTRACT:
A braking pressure modulator is disclosed including a gear unit which is interposed between its actuator and a volume-receiving unit and whose transmission varies in dependence upon the stroke of a displacement member or plunger in the volume-receiving unit. To this end, the gear unit is designed such that the hydraulic forces urging the displacement member or plunger in a shift-out direction remain in balance with a constant predefined adjusting force of the actuator when the displacement member or plunger is shifted out after attainment of a predetermined maximum pressure in the volume-receiving unit and with a hydraulic separating valve closed. To control the plunger strokes, only small changes in the adjusting force of the actuator are required. In one embodiment, the actuator of the braking pressure modulator is an electric motor.
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patent: 4066301 (1978-01-01), Harries
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patent: 4637661 (1987-01-01), Kohno
patent: 4714301 (1987-12-01), Farr
patent: 4750790 (1988-06-01), Klein
patent: 4767163 (1988-08-01), Cotignoli
Alfred Teves GmbH
Butler Douglas C.
Raden James B.
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