Master cylinder and booster assemblies

Power plants – Pressure fluid source and motor – Pulsator

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Details

60585, 60592, 605471, B60T 700, F15B 710

Patent

active

052534774

ABSTRACT:
In a master cylinder and booster assembly for a vehicle hydraulic system, the booster has a housing provided with a bore, an inlet connected to a source of hydraulic pressure, and an outlet connected to a booster reservoir, input and boost pistons working in the bore and a boost chamber for pressurization by fluid from the source, under the control of valve means, to actuate the boost piston which in turn actuates the master cylinder. The booster has a permanent connection between the boost chamber and the outlet and a connection between the source and the boost chamber which is closed when the booster is inoperative and open during operation. In order to provide a supply of fluid for a master cylinder reservoir, the booster has a feed passage leading from the bore to the master cylinder reservoir and an overflow passage leading from that reservoir to the outlet. The master cylinder reservoir includes a partition separating it into an active part containing the feed and overflow passages, and a passive part containing an outlet port for connection to the master cylinder. The partition includes a passage allowing limited fluid flow between the active and passive parts.

REFERENCES:
patent: 2958198 (1960-11-01), Moyer
patent: 4015881 (1977-04-01), Adachi
patent: 4524585 (1985-06-01), Coll et al.
patent: 4771605 (1988-09-01), Kytta

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