Fluid-pressure and analogous brake systems – Multiple systems – Fluid pressure and electric
Patent
1993-03-09
1995-02-21
Graham, Matthew C.
Fluid-pressure and analogous brake systems
Multiple systems
Fluid pressure and electric
303 15, 3031134, 188 714, B60T 1374
Patent
active
053909860
ABSTRACT:
A vehicular braking system embodying the present concept utilizes multi-plate brake packs in conjunction with a mechanical actuating system that comprises first ramps secured to ground and second ramps presented from an annular apply cam member as well as a brake apply annulus, the latter being disposed adjacent the brake pack with rollers between the ramps and between the brake pack and the brake apply annulus. The annular apply cam member is connected to the brake pedal by a suitable linkage so that actuation of the pedal transmits brake apply torque to the apply cam member which results in the application of an apply force to the brake pack by virtue of the rollers which effect axial translation of the brake apply annulus in response to rotation of the annular apply cam member. The system also includes an anti-lock brake system which is actuated in response to depression of the brake pedal. The anti-lock brake system actuates a hydraulic piston which acts against the brake apply annulus in an axial direction opposite the mechanical apply force to control the braking force and produce the required deceleration rate until the brake pedal is released.
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patent: 5201573 (1993-04-01), Leiber et al.
patent: 5248190 (1993-09-01), Sato et al.
General Motors Corporation
Graham Matthew C.
Scherer Donald F.
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