Timing device for time switch

Details Timing device for time switch Timing device for time switch

1982-04-14

1984-03-13

Scott, J. R.

Electricity: circuit makers and breakers

Retarded

Clock train

74568T, 200 38CA, H01H 700, H01H 4300, F16H 5300

Patent

active

044369697

ABSTRACT:
In a timing device for time switch comprising a scale plate rotated at a constant rate and possessing presetting element plug-in portions involving slots, grooves and the like corresponding to time scale on the circumferential part thereof and presetting elements to be inserted to fit into the plug-in portions of the scale plate, this scale plate is composed of a molded plastic guide portion serving to position the presetting elements and to keep the position of each presetting element inserted in the prescribed position, and a metallic body inserted in the plastic guide portion in such a manner that a portion with which the presetting element resiliently engages comes to be a metallic portion.

REFERENCES:
patent: 2712763 (1955-07-01), Horstmann
patent: 2953938 (1960-09-01), Bush
patent: 2980772 (1961-04-01), Doberstein
patent: 3275376 (1966-09-01), Prox, Jr.
patent: 4295015 (1981-10-01), Fujiwara et al.
patent: 4311886 (1982-01-01), Rulseh

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