Telephone actuated switch

Claim 2

A telephone operated remote control system connected between telephone subscriber lines and a two-way radio having transmitter and receiver portions, the system comprising relay switch means set in response to a ringing voltage occurring at the telephone lines, the voltage being indicative of an incoming call, circuit holding means connected by the relay switch means to the telephone lines to permit answering of the subscriber telephone, timing means actuated by the setting of the relay switch means for controlling a system operation cycle, audiocoupling means connecting the telephone lines and the two-way radio through the switch means to effect two-way communication, the timer means producing a reset signal at the termination of an operating cycle for resetting the relay switch means to an initial condition whereby the telephone lines are disconnected from the system thus ending further communication.

Claim 3

The system set forth in claim 1 wherein the system operates in a transmit mode and wherein the audiocoupling means comprises an audiotransformer having primary and secondary windings, the primary winding being connected through the switch means to the telephone lines, the secondary winding being connected to the transmitter portion of the two-way radio.

Claim 4

The system set forth in claim 1 wherein the holding circuit means includes the primary winding of the audiotransformer connected across The telephone lines, the winding having a preselected resistance for causing the answering of the subscriber telephone subsequent to generation of a ringing voltage on a telephone line.

Claim 5

The system set forth in claim 2 together with switch means selectively connecting the audio coupling means from the receiver portion of the two-way radio to the telephone lines via the relay switch means in response to an incoming message.

Claim 6

A telephone operated automatic remote control system for operating at least one electrical device at the location of a subscriber station, the system comprising relay switch means set in response to a ringing voltage occurring on the telephone lines of the subscriber station, the voltage being indicative of an incoming call, circuit holding means connected by the relay switch means to the telephone lines to permit answering of the subscriber telephone, timing means actuated by the setting of the relay switch means for controlling a system operation cycle, selectively actuatable tone operated switch means being associated with each electrical device, each switch means having an input and an output, audiocoupling means serially connected with the telephone lines, the input of a selected tone operated switch means and the relay switch means, the selected tone operated switch means maintaining ready status when the relay switch means is set in response to the ringing voltage, the output of the tone operated switch means being adapted to turn on the associated electrical device at the subscriber station, termination of the operation cycle causing reset of the relay switch means resulting in disconnection of the call.

Claim 7

A telephone operated automatic remote control system for operating at least one electrical device at the location of a subscriber station, the system comprising relay switch means set in response to a ringing voltage occurring on the telephone lines of the subscriber station, the voltage being indicative of an incoming call, circuit holding means connected by the relay switch means to the telephone lines to permit answering of the subscriber telephone, timing means actuated by the setting of the relay switch means for controlling a system operation cycle, selectively actuatable tone operated switch means being associated with each electrical device, each switch means having an input and an output, audiocoupling means serially connected with the telephone lines, the input of a selected tone operated switch means and the relay switch means, the selected tone operated switch means maintaining ready status when the relay switch means is set in response to the ringing voltage, the output of the tone operated switch means being adapted to turn on the associated electrical device at the subscriber station, termination of the operation cycle causing reset of the relay switch means resulting in disconnection of the call.