Electronic level switch control setup

Details Electronic level switch control setup Electronic level switch control setup

1975-11-24

1978-05-02

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307252B, 307311, 328 1, 340244R, 200 84R, 200190, G08B 2700, H03K 326, H01H 2928, G08B 2100

Patent

active

040877060

ABSTRACT:
The present application presents a setup utilizing a float in an enclosed space as a bridging contact, on the basis of the liquid level in the area to control, to activate a semiconductor relay having a time delay for such activation, and is especially valuable where the liquid level involved is that of a non-conductive liquid under severe conditions.

REFERENCES:
patent: 2413020 (1946-12-01), Wolfner et al.
patent: 2661411 (1953-12-01), Berger
patent: 3008420 (1961-11-01), Davis
patent: 3291149 (1966-12-01), Atkins et al.
patent: 3723769 (1973-03-01), Collins
patent: 3839651 (1974-10-01), Michaels

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