Fluid-pressure and analogous brake systems – Load control – Responsive to fluid pressure spring
Patent
1976-11-03
1978-09-26
Kazenske, Edward R.
Fluid-pressure and analogous brake systems
Load control
Responsive to fluid pressure spring
303 40, 303 52, B60T 822, B60T 1512
Patent
active
041164920
ABSTRACT:
A two-circuit brake system, operable either pneumatically or hydraulically, for motor vehicles including an operator-controlled brake valve for effecting supply of brake-operating pressure via a vehicle load-responsive device for regulating brake-operating pressure to the rear axle according to vehicle load, and a relay valve responsive to such regulated pressure for effecting supply of brake-operating pressure to the front axle according to a predetermined ratio. The relay valve includes certain pressure area members which may be replaced by others for varying the rear axle to front axle braking-pressure ratio to suit the particular vehicle on which it is used, and the operator-controlled brake valve is operable for maintaining effectiveness of at least one of the brake circuits, either front or rear, in the event of failure of the other.
REFERENCES:
patent: 3183042 (1965-05-01), Bueler
patent: 3580646 (1971-05-01), Ternent
patent: 3934942 (1976-01-01), Klimek
patent: 3964794 (1976-06-01), Scholz
patent: 3966263 (1976-06-01), Thrush
patent: 3976171 (1976-08-01), Belart
patent: 4025123 (1977-05-01), Oberthuer
Kazenske Edward R.
McIntire, Jr. R. W.
Visk R. S.
WABCO Westinghouse GmbH
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