Remote alarm system with scanning by tones

Claim 1

A SYSTEM FOR INDICATING AT A CENTRAL LOCATION THE CONDITION OF ANY ONE OF A PLURALITY OF REMOTELY LOCATED DEVICES INCLUDING IN COMBINATION, OSCILLATOR MEANS FOR PRODUCING A PLURALITY OF SEPERATE TONES, CODE MEANS CONNECTED TO SAID OSCILATOR MEANS FOR SELECTING GROUPS OF TONES FROM SAID PLURALITY OF TONES, EACH OF SAID GROUPS INCLUDING A DIFFERENT COMBINATION OF TONES AND LESS THAN THE TOTAL NUMBER OF SAID PLURALITY OF TONES, MEANS CONNECTED TO SAID CODE MEANS FOR TRANSMITTING SAID TONE GROUPS IN SEQUENCE WITH SAID TONES INCLUDED IN EACH TONE GROUP BEING TRANSMITTED SIMULTANEOUSLY, TERMINAL MEANS FOR RECEIVING SAID TONE GROUPS AND FOR RETRANSMITTING THE SAME INCLUDING SELECTIVE MEANS RESPONSIVE TO AT LEAST ONE OF SAID TONE GROUPS, A PLURALITY OF TRANSLATOR MEANS COUPLED TO EACH SELECTIVE MEANS AND INDIVIDUALLY COUPLED TO THE REMOTE DEVICES, EACH OF SAID TRANSLATOR MEANS BEING RESPONSIVE TO ONE TONE OF ONE OF SAID GROUPS TO WHICH SAID SELECTIVE MEANS RESPOND AND TO THE CONDITION OF THE REMOTE DEVICE TO WHICH SAID TRANSLATOR MEANS IS COUPLED TO GENERATE A REPLY SIGNAL, SAID SELECTIVE MEANS BEING RESPONSIVE TO SAID REPLY SIGNAL TO GENERATE A REPLY TONE, THE FREQUENCY OF WHICH IS DEPENDENT UPON THE CONDITION OF THE REMOTE DEVICE COUPLED TO SAID TRANSLATOR MEANS, MEANS COUPLED TO SAID SELECTIVE MEANS FOR COMBINING SAID REPLY TONED AND SIMULTANEOUSLY RETRANSMITTING THE SAME TO THE CENTRAL LOCATION, MEANS AT THE CENTRAL LOCATION FOR RECEIVING THE RETRANSMITTED REPLY TONES, AND DISPLAY MEANS FOR DISPLAYING THE CONDITION OF THE REMOTE DEVICES.

Claim 2

A SYSTEM FOR INDICATING AT A CENTRAL LOCATION THE CONDITION OF ANY ONE OF A PLURALITY OF REMOTELY LOCATED DEVICES INCLUDING IN COMBINATION, OSCILLATOR MEANS FOR PRODUCING A PLURALITY OF SEPERATE TONES, CODE MEANS CONNECTED TO SAID OSCILATOR MEANS FOR SELECTING GROUPS OF TONES FROM SAID PLURALITY OF TONES, EACH OF SAID GROUPS INCLUDING A DIFFERENT COMBINATION OF TONES AND LESS THAN THE TOTAL NUMBER OF SAID PLURALITY OF TONES, MEANS CONNECTED TO SAID CODE MEANS FOR TRANSMITTING SAID TONE GROUPS IN SEQUENCE WITH SAID TONES INCLUDED IN EACH TONE GROUP BEING TRANSMITTED SIMULTANEOUSLY, TERMINAL MEANS FOR RECEIVING SAID TONE GROUPS AND FOR RETRANSMITTING THE SAME INCLUDING SELECTIVE MEANS RESPONSIVE TO AT LEAST ONE OF SAID TONE GROUPS, A PLURALITY OF TRANSLATOR MEANS COUPLED TO EACH SELECTIVE MEANS AND INDIVIDUALLY COUPLED TO THE REMOTE DEVICES, EACH OF SAID TRANSLATOR MEANS BEING RESPONSIVE TO ONE TONE OF ONE OF SAID GROUPS TO WHICH SAID SELECTIVE MEANS RESPOND AND TO THE CONDITION OF THE REMOTE DEVICE TO WHICH SAID TRANSLATOR MEANS IS COUPLED TO GENERATE A REPLY SIGNAL, SAID SELECTIVE MEANS BEING RESPONSIVE TO SAID REPLY SIGNAL TO GENERATE A REPLY TONE, THE FREQUENCY OF WHICH IS DEPENDENT UPON THE CONDITION OF THE REMOTE DEVICE COUPLED TO SAID TRANSLATOR MEANS, MEANS COUPLED TO SAID SELECTIVE MEANS FOR COMBINING SAID REPLY TONED AND SIMULTANEOUSLY RETRANSMITTING THE SAME TO THE CENTRAL LOCATION, MEANS AT THE CENTRAL LOCATION FOR RECEIVING THE RETRANSMITTED REPLY TONES, AND DISPLAY MEANS FOR DISPLAYING THE CONDITION OF THE REMOTE DEVICES.