Electrical transmission or interconnection systems – Plural load circuit systems – Selectively connected or controlled load circuits
Patent
1974-08-30
1976-06-22
Schaefer, Robert K.
Electrical transmission or interconnection systems
Plural load circuit systems
Selectively connected or controlled load circuits
307 10R, 340147C, H02J 400
Patent
active
039653668
ABSTRACT:
An electrical device control system comprising: a plurality of signal sources; a plurality of electrical loads; a central operation apparatus; a plurality of terminal operation apparatus connected to the plurality of electrical loads and having means to detect the operation and a fault of the signal source and a fault of the electrical load and to generate a time division signal thereof; a multiple signal transmission line connecting the plurality of terminal operation apparatus to the central operation apparatus to transmit the time division signal to the central operation apparatus; the central operating apparatus having means to generate an activating signal for transmission over the multiple signal transmission line to the terminal station apparatus to operate an electrical load in response to the detection of the time division signal.
REFERENCES:
patent: 3333245 (1967-07-01), Schildgen et al.
patent: 3618082 (1971-11-01), Feulner
patent: 3821559 (1974-06-01), Ueda et al.
Ishii Mitsuaki
Nii Kazuo
Shimizu Osamu
Sumida Shizuo
Ueda Atsushi
Ginsburg M.
Mitsubishi Denki & Kabushiki Kaisha
Schaefer Robert K.
Toyo Kogyo Co. Ltd.
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