Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Patent
1976-07-28
1978-09-05
Blix, Trygve M.
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
188195, 303 22R, B60T 818, B60T 824, B60T 826
Patent
active
041114949
ABSTRACT:
A liquid pressure braking system for a vehicle has a master cylinder which is connected to the brake operating motor cylinder on each wheel of the vehicle through a respective pressure control valve. Each pressure control valve is operated by a plunger which is linked to the suspension of the respective wheel by a respective torsion bar. Each torsion bar exerts a biassing load on the respective plunger which varies with the load supported by the respective wheel and which acts upon that plunger to open that valve. The action of the biassing load on each plunger is opposed by the loading on that plunger due to liquid pressure in the respective motor cylinder. A compression spring acts on the plunger of each pressure control valve which controls liquid pressure fed to the motor cylinders that operate the front wheel brakes so that those two valves are held open for all straight ahead braking. Load transfer from the inboard wheels during cornering reduces the biassing load that acts upon the respective pressure control valve plunger so that the braking pressure that acts upon the inboard wheels is reduced. Each pressure control valve may be a pressure reducing valve as defined, or may be a valve which is re-opened after closure only if the applied biassing load is increased or master cylinder pressure is reduced. Various control mechanisms for controlling the pressure control valves that control liquid pressure fed to the front wheel brake operating motor cylinders are disclosed.
REFERENCES:
patent: 3059976 (1962-10-01), Whelan
patent: 3101220 (1963-08-01), Wettstein
patent: 3129035 (1964-04-01), Alfieri
patent: 3475059 (1969-10-01), Klein
patent: 3848932 (1974-11-01), Lewis
Automotive Products Limited
Blix Trygve M.
Butler Douglas C.
Winter Lawrence J.
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