Lamp holder including a centrally operated switch by means of ca

Details Lamp holder including a centrally operated switch by means of ca Lamp holder including a centrally operated switch by means of ca

1988-02-01

1989-07-25

Levy, Stuart S.

Electric lamp and discharge devices: systems

Plural load device systems

Electric switch in the supply circuit

315315, 315362, 362404, H05B 3700

Patent

active

048517402

ABSTRACT:
A track lighting system including remote on-off control of the lighting element, carrier-current transmitter for transmitting carrier-current signals over power lines, a bipolar rail for the electric power connected to the signal transmitter, a lamp holder comprising a first section cooperating with the rail, an intermediate section housing, a receiver for receiving the carrier-current signals and connected to a power switch, and an end section for supporting a lighting element, and selecting apparatus housed in the intermediate section for adjusting the receiver so that the receiver is responsive only to one among a plurality of the carrier-current signals sent over the power lines through the bipolar rail. The selecting apparatus includes a comb connection associated with the receiver and a movable contact for selecting the one signal to which the receiver is to be responsive.

REFERENCES:
patent: 4095139 (1978-06-01), Symonds et al.
patent: 4283636 (1981-08-01), Tchang
patent: 4414617 (1983-11-01), Galindo
patent: 4591764 (1986-05-01), Nilssen
patent: 4591957 (1986-05-01), Harwood
patent: 4656398 (1987-04-01), Michael et al.

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