Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Patent
1978-12-04
1980-12-02
Eisenzopf, Reinhard J.
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
303 9, 303 85, B60T 1300
Patent
active
042367620
ABSTRACT:
A tractor-trailer hydraulic braking system in which the tractor braking circuit and trailer braking circuit are inter-connected by releasable hydraulic couplings including both service and emergency line connections each with its associated return line. The trailer circuit also includes a pressure storage unit or accumulator and a emergency valve operable to apply the trailer brakes in the event of loss of emergency line pressure. To avoid leak down of the accumulator over a period following de-coupling of the trailer an expansion tank or chamber is connected into the trailer circuit so as to receive fluid leaking into the return lines from the accumulator and to retain such fluid until the pump can return it to the accumulator.
REFERENCES:
patent: 3574413 (1971-04-01), Euga
patent: 3768371 (1973-10-01), Orme
Clayton Dewandre & Company Limited
Eisenzopf Reinhard J.
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