Digital switch

Details Digital switch Digital switch

1982-11-10

1984-08-07

Shepperd, John W.

Electricity: circuit makers and breakers

Plural switches control single circuit

200 11TW, 200156, 200321, 200328, 200334, H01H 2176

Patent

active

044645490

ABSTRACT:
Disclosed is a digital switch which is manually rotated step by step and which comprises a casing, a wheel rotatably supported in the casing, device for manually rotating the wheel step by step, an electrical contact carried by the wheel, an electrical circuit board attached to the casing and provided with a plurality of electrical contacts which are successively touched by the electrical contact carried by the wheel when the wheel is rotated step by step, for producing an electrical signal in accordance with a stepping rotary position of the wheel, and a locking device for disabling the wheel rotating device.

REFERENCES:
patent: 1445847 (1923-02-01), Platt
patent: 3809830 (1974-05-01), Lockard et al.
patent: 4112278 (1978-09-01), Greiner et al.
patent: 4190749 (1980-02-01), Erickson et al.
patent: 4257283 (1981-03-01), Haller et al.
patent: 4369342 (1983-01-01), Suzuki

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