Electricity: circuit makers and breakers – Combined with or actuated by connector coupling – Multiple circuit control – selective
Patent
1983-01-07
1984-07-31
Shepperd, John W.
Electricity: circuit makers and breakers
Combined with or actuated by connector coupling
Multiple circuit control, selective
200 42T, H01R 1370
Patent
active
044632282
ABSTRACT:
A portable electrical circuit control unit with a key-lockable switch means assembled on a molded base member of insulating material with said unit including an electrical receptacle or outlet for receiving the plug on a conductor from a motor and also including an extension cord for connection to a source of electricity all on said base member which is covered by a molded member of insulating material to house that which is assembled on said base member and cooperate in maintaining the same on said base member, with said switch means including bridging contact means in continuous electrical connection with the receptacle or outlet and selectively operable to electrically connect with said extension cord and complete a circuit to said receptacle or outlet, said switch means including a removable key to disable said latter means.
REFERENCES:
patent: 2474454 (1949-06-01), Avery
patent: 2784268 (1957-03-01), Shepherd
patent: 2907855 (1959-10-01), Hedges
patent: 3163728 (1964-12-01), Martin
patent: 3415966 (1968-12-01), Matthews
patent: 3524029 (1970-08-01), Laff
patent: 3678229 (1972-07-01), Osika
patent: 4000383 (1976-12-01), Lockard
patent: 4107484 (1978-08-01), Petersen
McGill Manufacturing Company, Inc.
Mueller Foorman L.
Shepperd John W.
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