Electricity: circuit makers and breakers – Limit switch
Patent
1993-02-11
1994-12-20
Barrett, Glenn T.
Electricity: circuit makers and breakers
Limit switch
200 38R, 192139, H01H 316
Patent
active
053747917
ABSTRACT:
A compact automatic stop device for two mechanisms for counting revolutions which consist of coaxial counting wheels (10, 10') each associated with a notched cam (14, 14') interacts with a cutoff finger (24, 24') securely fastened to a common cutoff lever (20, 20'), so that when the notches (19) are aligned, the cutoff lever actuates a switch (26, 26'). A set-to-zero lever (29, 29') makes it possible to reset the counting wheels to zero by acting via hammers (33') on core cams (18'). The counting wheels, the cutoff levers and the set-to-zero levers of each counting mechanism are pivoted in a common cradle (5, 5') articulated with respect to a fixed casing (1) having profiled parts (36, 37, 36', 37') which are intended to interact with the cutoff levers and the set-to-zero levers during the displacement of the cradles.
REFERENCES:
patent: 2519907 (1950-08-01), Hodgson
patent: 3937910 (1976-02-01), Fukami
patent: 4171473 (1979-10-01), Hugin
patent: 4307269 (1981-12-01), Rotthaus
patent: 4314119 (1982-02-01), Fillion
patent: 4322589 (1982-03-01), Pommat et al.
patent: 4411348 (1983-10-01), Fillion
patent: 4523062 (1985-06-01), Mahon
Barrett Glenn T.
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