Latching magnetic level sensor

Details Latching magnetic level sensor Latching magnetic level sensor

1975-10-22

1977-05-24

Freeh, William L.

Pumps

One fluid pumped by contact or entrainment with another

Liquid pumped by supplying or exhausting gaseous motive...

417138, 417147, F04F 106

Patent

active

040252370

ABSTRACT:
A latching liquid-level sensor including a vertically mounted free-floating float member which carries a magnet. A second magnet or ferromagnetic member separated from the first magnet by a liquid- and gas-impervious barrier is selectively actuated by the first magnet. The second magnet or ferromagnetic member is connected to a control logic system which is isolated from the float member which may be hermetically contained in a highly corrosive or explosive environment.

REFERENCES:
patent: 2231158 (1941-02-01), Davis
patent: 2362802 (1944-11-01), Ciabattari
patent: 2449054 (1948-09-01), Cantlin
patent: 3082698 (1963-03-01), Smith
patent: 3285183 (1966-11-01), Hembree et al.
patent: 3443319 (1969-05-01), Dooley
patent: 3576413 (1971-04-01), Creager et al.
patent: 3751983 (1973-08-01), Rutkowski et al.

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