Hydraulic dual-circuit tandem master brake cylinder

Details Hydraulic dual-circuit tandem master brake cylinder Hydraulic dual-circuit tandem master brake cylinder

1984-12-19

1986-08-05

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

60545, 605471, 60548, 188359, 188345, 303 52, 303114, B60T 802, B60T 1120, B60T 1314

Patent

active

046039180

ABSTRACT:
A hydraulic dual-circuit tandem master brake cylinder intended for use in brake systems of motor vehicles is proposed, to which a closed brake circuit (I) and an open brake circuit (II), the latter reinforced by auxiliary pressure, are connected. In order to switch the control valve, the main brake cylinder has a foot-actuated push rod as an actuation member, with transmission of force via a control contour or a travel-limiting spring, and it furthermore has an auxiliary piston member near the pedal, this member having an effective surface for making the feedback of the brake pressure which has been established perceptible. In this manner, a small, compact master brake cylinder construction which is very favorable in price is created. It is furthermore of advantage that the pedal characteristic is designed optimally in terms of human engineering. The main cylinder can also be used at little expense for an anti-wheel-lock apparatus as well.

REFERENCES:
patent: 3978667 (1976-09-01), Ohara
patent: 4126996 (1978-11-01), Leiber
patent: 4137718 (1979-02-01), Belart
patent: 4206605 (1980-06-01), Mehren et al.
patent: 4405183 (1983-09-01), Resch
patent: 4422293 (1983-12-01), Ewald
patent: 4482192 (1984-11-01), Leiber

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