Electricity: circuit makers and breakers – Electric switch details – Actuators
Patent
1979-09-25
1981-02-24
Little, Willis
Electricity: circuit makers and breakers
Electric switch details
Actuators
200336, 74 10A, H01H 320
Patent
active
042530040
ABSTRACT:
A mechanical control system comprising a master or a controller which is rotated in control operations, a slave or a controlled unit such as a rotary electric control component such as a variable resistor, and a mechanical power transmission means for interconnecting between the master and slave for transmitting the turning force of the master to the slave. The mechanical power transmission means comprises a core and a plurality of helical spring layers tightly wound one upon another alternately in the opposite directions so that the angular mismatching or misalignment between the master and slave may be avoided. Since the master and slave may be spaced apart from each other, the layouts of electric components may be remarkably facilitated even in a very limited space.
REFERENCES:
patent: 519354 (1894-05-01), Sheppard
patent: 3193653 (1965-07-01), Cope
patent: 3621158 (1971-11-01), Swinstead
Little Willis
Matsushita Electric - Industrial Co., Ltd.
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