Liquid level sensor

Details Liquid level sensor Liquid level sensor

1975-10-31

1977-11-08

Queisser, Richard C.

Measuring and testing

Liquid level or depth gauge

Float

73DIG5, 200 84C, G01F 2312, H01H 3602

Patent

active

040569799

ABSTRACT:
A liquid level sensor having a vertical guide tube with one or more magnetically operated switches therein at vertically spaced locations and a free float thereon which rises and falls with the liquid level and as it passes each switch magnetically latches it in one condition until the float returns in the opposite direction and unlatches it. The switches may be normally open, normally closed, or any combination, so that movement of the float past the switches may provide any desired circuit sequence.

REFERENCES:
patent: 3198902 (1965-08-01), Deschautreaux, Jr.
patent: 3227838 (1966-01-01), Hoeppel
patent: 3484774 (1969-12-01), Borgnakke
patent: 3634794 (1972-01-01), Verbeke
patent: 3646293 (1972-02-01), Howard
patent: 3678750 (1972-07-01), Di Noia et al.
patent: 3742404 (1973-06-01), Hamilton, Jr.

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