Brake fluid reservoir including fluid level indicator

Details Brake fluid reservoir including fluid level indicator Brake fluid reservoir including fluid level indicator

1975-03-25

1976-06-15

Caldwell, John W.

Communications: electrical

Systems

Call station

200 84R, 34059, G08B 2100

Patent

active

039640795

ABSTRACT:
A fluid reservoir is partitioned by a diaphragm into a liquid phase portion and a vapor phase portion with the diaphragm being moved in accordance with the liquid level in the liquid phase portion of the reservoir. An operating rod mounted to move with the diaphragm is engaged by sensing means which operate to produce a signal indicative of liquid level in response to the position of the operating rod. The operating rod may be composed partially of electrically conductive material and partially of electrically nonconductive material in order to open and close an external electrical signal circuit in accordance with its position relative to the level of liquid within the reservoir.

REFERENCES:
patent: 1288855 (1918-12-01), Faber
patent: 2448096 (1948-08-01), Hardin
patent: 3436727 (1969-04-01), Pagano, Sr.
patent: 3479639 (1969-11-01), Randol
patent: 3691522 (1972-09-01), Hocking et al.
patent: 3849770 (1974-11-01), Hayashida

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