Vehicle braking apparatus and method

Details Vehicle braking apparatus and method Vehicle braking apparatus and method

1983-12-23

1985-08-20

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Multiple control

Fluid and electric

303 20, 303 22A, B60T 1518

Patent

active

045360391

ABSTRACT:
A braking apparatus and method are taught that allows the vehicle having the apparatus to resume operation when the magnitude of an electrical signal to an electro-fluidic portion of the apparatus is less than a minimum predetermined value. The system uses electro-fluidic braking equipment to supply pressurized fluid in response to an electrical signal and fluid pressure controlled braking equipment to supply pressurized fluid in response to pressure differentials. An automatic selector value (ASV) normally receives pressurized fluid from the electro-fluidic equipment. When a minimum predetermined value electrical signal is not present, however, the ASV receives pressurized fluid from the fluid pressure controlled braking equipment. The system incorporates a release device to isolate the electro-fluidic braking equipment from the ASV when the electrical signal is less than the minimum predetermined value. Thereafter, the equipment may resume operation.

REFERENCES:
patent: 1173673 (1916-02-01), Macloskie
patent: 3709564 (1973-01-01), Jeffrey et al.
patent: 3716274 (1973-02-01), Pier

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