Attitude controlled float switch

Details Attitude controlled float switch Attitude controlled float switch

1984-09-24

1986-12-16

Marcus, Stephen

Electricity: circuit makers and breakers

Liquid contact

Time delay

200153T, 200 84R, 200 6152, H01H 3518

Patent

active

046298410

ABSTRACT:
A hermetically sealed float switch having a bistable ball cage therein. The ball cage is free to pivot between either of two spring biased, over center positions responsive to the position of a ball which is free to roll from either end of the race through the cage to the other end of the race. An over center spring holds the ball cage in its last operated position. A safety arm prevents the ball cage from changing its attitude in any manner which, if uncontrolled, might permit the ball to escape into an inoperative position which might capture it behind the ball cage. Adjustment is provided for the on and off levels of the switch responsive to tether length.

REFERENCES:
patent: 2296053 (1942-09-01), Porter et al.
patent: 2642507 (1953-05-01), West
patent: 3483741 (1969-12-01), Reichensperger
patent: 3746035 (1973-07-01), Singer
patent: 3753474 (1973-08-01), Dillmann
patent: 3944770 (1976-03-01), Pepper
patent: 4104492 (1978-08-01), Pliml, Jr.

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