Master cylinder reservoir with vacuum relief diaphragm and guard

Electricity: circuit makers and breakers – Float – Float and pressure

Patent

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Details

73408, 200 83L, H01H 3518

Patent

active

040586944

ABSTRACT:
A brake fluid reservoir includes a main body portion having a cap securing a diaphragm between the body and the cap. A sensor is mounted to protrude into the reservoir for indicating a predetermined minimum level of brake fluid in the reservoir. The diaphragm is provided for corresponding movement in response to decreases in the level of brake fluid in the reservoir and also for separating a brake fluid containing portion of the reservoir from an air containing portion. The diaphragm includes an interstice for permitting air in the air containing portion to be drawn into the fluid containing portion under preselected conditions. A protective device surrounds the sensor for maintaining the movement of the diaphragm from interfering engagement with the sensor. The brake fluid reservoir may be used in a vehicle brake system including a master cylinder connected for fluid communication with the reservoir and with the front and rear brakes of the vehicle.

REFERENCES:
patent: 2907844 (1959-10-01), Lindsey
patent: 3208645 (1965-08-01), Levins
patent: 3260815 (1966-07-01), Trimmer
patent: 3931485 (1976-01-01), Spielfiedel
patent: 3985985 (1976-10-01), Harwick

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