Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
171 words
Device for control of electrical power supply to a plurality of local electrical apparatuses from a single source of direct current, comprising a central bistable switch connected between a first terminal of said source and power supply lines of the local electrical apparatuses; a central resistor connected in parallel with said central switch; each local electrical apparatus comprising a local resistor and at least one control switch which are connected in series between a power supply line and a second terminal of said source, each local resistor forming, together with the central resistor, a voltage divider bridge, a center point of which is connected to a central detector controlling said central switch, each local electrical apparatus generating a reopening information signal which is sent to the central detector, means for eliminating the current circulating in said local resistor and means for detecting the closure of the central bistable switch which controls the closure of said isolating means and the opening of said current eliminating means when the central bistable switch closes.
Claim 2
Dependent Claim
171 words
Device for control of electrical power supply to a plurality of local electrical apparatuses from a single source of direct current, comprising a central bistable switch connected between a first terminal of said source and power supply lines of the local electrical apparatuses; a central resistor connected in parallel with said central switch; each local electrical apparatus comprising a local resistor and at least one control switch which are connected in series between a power supply line and a second terminal of said source, each local resistor forming, together with the central resistor, a voltage divider bridge, a center point of which is connected to a central detector controlling said central switch, each local electrical apparatus generating a reopening information signal which is sent to the central detector, means for eliminating the current circulating in said local resistor and means for detecting the closure of the central bistable switch which controls the closure of said isolating means and the opening of said current eliminating means when the central bistable switch closes.
Claim 3
Dependent Claim
66 words
The device according to claim 1, wherein in each local electrical apparatus, there is provided a local home contact connected in series with said local resistor and said control switch, a local contactor connected to the power supply line downstream of said control switch and local resistor and a local detector connected upstream of said local contactor and controlling said local home contact and local contactor.
Claim 4
Dependent Claim
23 words
The device according claim 2, wherein the central switch includes a relay controlled by a flip-flop, and the central detector includes a comparator.
Claim 5
Dependent Claim
19 words
The device according to claim 2 or 3, wherein the local home contact and the local contactor include transistors.
Claim 6
Dependent Claim
35 words
The device according to claim 1, further comprising, connected in parallel with each control switch, a circuit for generating an operation signal, said operation signal being transmitted by an information bus to a central unit.
Claim 7
Dependent Claim
34 words
The device according to claim 1, wherein the local detector comprises a transistor and a resistor which are each connected between the power supply line and the second terminal of the direct current source.
Claim 8
Dependent Claim
32 words
The device according to claim 6, wherein the local electrical apparatus comprises a plurality of control switches and a diode inserted between the local home contact and each of said control switches.
Claim 9
Dependent Claim
34 words
The device according to claim 7, wherein each local electrical apparatus comprises a circuit for blocking the local circuit breaker controlled by the voltage at the terminals of each one of the control switches.
Claim 10
Dependent Claim
26 words
The device according to claim 8, wherein said blocking device comprises two transistor stages and controls the base of a transistor constituted the local home contact.
Claim 11
Dependent Claim
41 words
The device according to claim 9, wherein a transistor of the second stage of said blocking device is controlled by a priority control circuit including a diode connecting the base of the transistor to the upstream terminal of a control switch.