Electricity: circuit makers and breakers – Multiple circuit control – Pivoted contact
Patent
1985-07-05
1987-03-03
Scott, J. R.
Electricity: circuit makers and breakers
Multiple circuit control
Pivoted contact
200156, H01H 334, H01H 2180
Patent
active
046477322
ABSTRACT:
A digital switch may have an advantageous actuating member including, in addition to pawls for a ratchet mechanism, a pair of main bodies and spring portions integrally formed therewith, whereby the mechanical integrity of the actuating member and smooth operation are assured. The spring portions are interconnected by a mounting plate which is in turn engaged to a casing member. The switch may include an advantageous electro-conductive pattern which is made by insert molding an embossed metallic plate into synthetic resin, whereby the dimensional accuracy of the pattern is assured and the production may be facilitated. Further, the switching element may make use of a set of concentric cams which selectively drive movable contact pieces onto fixed contact pieces according to the step-wise rotation of a ratchet wheel.
REFERENCES:
patent: 3723674 (1973-03-01), Khitro et al.
patent: 3813668 (1974-05-01), Ross
patent: 4112278 (1978-09-01), Greiner et al.
patent: 4257283 (1981-03-01), Haller et al.
patent: 4464549 (1984-08-01), Fujita
patent: 4503303 (1985-03-01), Fourcaulx et al.
Hasegawa Kiyotaka
Sakakino Takahiro
Yamanaka Sekisuke
Yanase Akira
Omron Tateisi Electronics Co.
Scott J. R.
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