Electricity: electrical systems and devices – Control circuits for electromagnetic devices – For relays or solenoids
Patent
1977-11-09
1979-06-26
Goldberg, Gerald
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
For relays or solenoids
307 71, 307127, 307147, 361 42, H01H 4722, G01R 3102
Patent
active
041595033
ABSTRACT:
An electric branch-line combiner is disclosed by which double power at double voltage is obtainable from two branch-line outlets of a typical existing branch-line circuit interconnected to a typical three-wire electric power source and by which electrical grounding means are readily, conveniently and safely obtained directly from two such existing branch outlets, each having only two contactors.
REFERENCES:
patent: 2721307 (1955-10-01), Bowles
patent: 3293452 (1966-12-01), Horwitz et al.
patent: 3735248 (1973-05-01), Reese
patent: 3991320 (1976-11-01), Ross
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