Centrally controlled lighting installation having a plurality of individually switched light points central switch elements and individual light switches therefor
First Claim
1. In an electric power system for a house or the like, where there are a plurality of individual light sources at various locations and there is a two-wire cabling for power delivery, a system which provides for individual operation of said light sources at their related locations for both activation and deactivation of related light sources, and also for deactivation of said light sources from a master location without interference with subsequent individual activation and deactivation of said light sources, said system comprising;
- (a) a plurality of individual switch assemblies, each of which is operatively connected to at least a related one of said light sources for individual operation thereof, each individual switch assembly comprising;
(1) a first on-off switch kept in its closed position by a magnet coil where power is delivered to said light source and kept in its open position where power is not delivered to said light source,(2) means to operate said first on-off switch independent from the force effected by the magnet coil to close it, to selectively(aa) close and open said first on-off switch mechanically from outside the individual switch assembly and(bb) close said first on-off switch mechanically from outside the individual switch assembly and to open said first on-off switch electrically by means of a second normally kept closed on-off switch between said magnet coil and one of the power outlets of said individual switch assembly and(cc) open said first on-off switch electrically by said second on-off switch and to close said first on-off switch electrically by third normally kept open on-off switch arranged parallel to said first on-off switch, and(b) master switch means which is normally kept in its closed switch position and which may be opened for momentary power interruption of the electrical power system, resulting in an opening of said first on-off switch of each individual switch assembly.
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Abstract
This invention relates to a lighting system having a plurality of individual light points or groups of individual light points which may be controlled by means of a central switch element, acting on all individual light points, whereby the function of the individual light points (or groups of individual light points to be jointly connected) is maintained independent of the central control and the individual light points may be switched on and off individually and independently, this lighting system being installable in a most simple manner with the use of already installed two-wire cabling and without additional cabling or devices. The present invention also relates to the central switch element and to the individual light switches associated with the individual light points or groups of individual light points, in different embodiments.
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Citations
10 Claims
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1. In an electric power system for a house or the like, where there are a plurality of individual light sources at various locations and there is a two-wire cabling for power delivery, a system which provides for individual operation of said light sources at their related locations for both activation and deactivation of related light sources, and also for deactivation of said light sources from a master location without interference with subsequent individual activation and deactivation of said light sources, said system comprising;
(a) a plurality of individual switch assemblies, each of which is operatively connected to at least a related one of said light sources for individual operation thereof, each individual switch assembly comprising; (1) a first on-off switch kept in its closed position by a magnet coil where power is delivered to said light source and kept in its open position where power is not delivered to said light source, (2) means to operate said first on-off switch independent from the force effected by the magnet coil to close it, to selectively (aa) close and open said first on-off switch mechanically from outside the individual switch assembly and (bb) close said first on-off switch mechanically from outside the individual switch assembly and to open said first on-off switch electrically by means of a second normally kept closed on-off switch between said magnet coil and one of the power outlets of said individual switch assembly and (cc) open said first on-off switch electrically by said second on-off switch and to close said first on-off switch electrically by third normally kept open on-off switch arranged parallel to said first on-off switch, and (b) master switch means which is normally kept in its closed switch position and which may be opened for momentary power interruption of the electrical power system, resulting in an opening of said first on-off switch of each individual switch assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
Specification