Float switches with wide differential

Details Float switches with wide differential Float switches with wide differential

1980-05-12

1981-11-24

Tolin, Gerald P.

Electricity: circuit makers and breakers

Float

Float and pressure

200153A, 200 6152, 200230, H01H 3518

Patent

active

043026419

ABSTRACT:
Apparatus for increasing the effective differential of a position responsive switch (30) which comprises a mounting plate (43) having an aperture larger than the switch, and stop members (46, 47) carried by the switch for limiting the "tumbling" motion of the switch in the aperture. A second embodiment interposes an intermediate mounting member (56) between the switch (30) and the mounting plate (55), and enables tumbling motion between the switch and the intermediate member as well as between the intermediate member and the mounting plate. The apparatus is shown in a float (29) for use for "pump down" and "pump up" operation.

REFERENCES:
patent: 1972724 (1934-09-01), White
patent: 2448681 (1948-09-01), Nutter
patent: 2600659 (1952-06-01), Koch, Jr.
patent: 2708226 (1955-05-01), Dixon
patent: 3259714 (1966-07-01), Coeur
patent: 3786469 (1974-01-01), Massaro
patent: 3864538 (1975-02-01), Paradis

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