Electricity: circuit makers and breakers – Plural switches control single circuit
Patent
1983-07-25
1984-08-28
Shepperd, John W.
Electricity: circuit makers and breakers
Plural switches control single circuit
200322, 200327, H01H 920
Patent
active
044685440
ABSTRACT:
A locking device to be mounted in conjunction with a switch arm. The locking device is to be moved between a locking position and a release position. The switch arm is to be movable between "on" position and "off" position. With the locking device is the locking position, the switch arm is prevented from movement from the "off" position to the "on" position. With the locking device in the release position, the switch arm is readily movable between the "on" and "off" position.
REFERENCES:
patent: 1448105 (1923-03-01), Bell
patent: 2246919 (1941-06-01), Krantz
patent: 2523943 (1950-09-01), Choppa
patent: 2810050 (1957-10-01), Johnson
patent: 2946864 (1960-07-01), Marien
patent: 3384727 (1968-05-01), Zavertnik et al.
patent: 3816677 (1974-06-01), Soltez
patent: 4102471 (1978-07-01), Lore et al.
Wainess Anamae
Wainess William
Munro Jack C.
Shepperd John W.
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