Electricity: circuit makers and breakers – Plural switches control single circuit
Patent
1979-02-12
1980-10-28
Marcus, Stephen
Electricity: circuit makers and breakers
Plural switches control single circuit
200339, H01H 2706
Patent
active
042309174
ABSTRACT:
An electrical rocker switch of the type having a removable actuator key to prevent turning the switch "on" when the key is removed, such switch having a rockable carrier member for operating switching bridge structure, a rocker member mounted cooperatively with said carrier member in a switch casing and with each such two members being movable independently of the other about a common axis. The removable key couples the rocker member and carrier member so that all three are then operated together as a coupled structure by actuation of such key, said switch having contact means for two different circuits, with the key member when inserted into the carrier-rocker members in one direction accomplishing the operation of the contact means to close one of said two circuits through the switch, and with removal of the key member, rotation thereof through 180.degree. about an axis at right angles to said common axis and then reinsertion in the carrier-rocker members in that rotated position coupling said two members for actuation by the key member when it is moved in the opposite direction to close the other circuit. The key member has a portion engageable with stop means with the switch to limit the key member movement in the direction of such movement until it is stopped, having closed the selected one of said two different circuits in an "on" position in such moving. The switch cannot be operated to a different circuit "on" position with the key removed.
REFERENCES:
patent: 3225153 (1965-12-01), Carling
patent: 3604865 (1971-09-01), Batcheller et al.
patent: 3632914 (1972-01-01), Osika
patent: 3678229 (1972-07-01), Osika
patent: 3906176 (1975-09-01), Carlson
patent: 3914563 (1975-10-01), Prior
patent: 4013858 (1977-03-01), Grebner et al.
Marcus Stephen
McGill Manufacturing Company, Inc.
Mueller Foorman L.
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