Data reporting system

Claim 2

In combination with a telephone communication system having message lines across which a voltage is established when loaded at a reporting station, a transmitter including contact means connected to said message lines for programming withdrawal of energy from the message lines, motor means drivingly connected to the contact means for imparting movement thereto, and currentcontrolling switch means operatively connecting the contact means to the motor means for intermittently energizing the motor means and unloading the message lines to produce dialing pulses during a dialing period.

Claim 3

The combination of claim 1 wherein said contact means includes a coded element driven by the motor means and stationary brush means connected to the message lines and engageable with the coded element for conducting current from the message lines to the switch means, said coded element being accelerated by the motor means when energized and coasting while the motor means is momentarily deenergized and the message lines unloaded.

Claim 4

The combination of claim 2 wherein said current-controlling switch means includes an amplifier interconnecting the message lines with the motor means when operative, and bias control means interconnecting the contact means with the amplifier during the dialing period for rendering the amplifier operative and imposing a predetermined load on the message lines.

Claim 5

The combination of claim 3 wherein said amplifier comprises a transistor arranged in an emitter follower configuration.

Claim 6

The combination of claim 4 including an oscillator having an output, loading circuit means rendered operative by the contact means during a message period for connecting the oscillator and the motor means to the message lines to increase the loading thereof below hangup value, said brush means including a gating contact connected to the output of the oscillator conducting a gated signal to the message lines.

Claim 7

The combination of claim 5 wherein said circuit means includes inductive means for establishing AC signal components in response to operation of the oscillator during the message period and current-limiting means for reducing current flow through the motor means.

Claim 8

The combination of claim 6 including frequency-tuned amplifier means connected in parallel with the oscillator and connected to the circuit means for producing a drive pulse in response to a return tone signal in the message lines and relay means rendered operative by said drive pulse for disconnecting the message lines from the contact means to prevent recycling.

Claim 9

The combination of claim 1 wherein said current-controlling switch means includes an amplifier interconnecting the message lines with the motor means when operative, and bias control means interconnecting the contact means with the amplifier during the dialing period for rendering the amplifier operative and imposing a predetermined load on the message lines.

Claim 10

The combination of claim 8 wherein said amplifier comprises a transistor arranged in an emitter follower configuration.

Claim 11

The combination of claim 1 including an oscillator having an output, loading circuit means rendered operative by the contact means during a message period for connecting the oscillator and the motor means to the message lines to increase the loading thereof, said contact means including a coded element driven by the motor means and stationary brush means connected to the output of the oscillator for conducting a gated signal to the message lines.

Claim 12

The combination of claim 10 wherein said circuit means includes inductive means for establishing AC signal components in response to operation of the oscillator during the message period and current-limiting means for reducing current flow through the motor means.

Claim 13

The combination of claim 11 including frequency-tuned amplifier means connected in parallel with the oscillator and connected to the circuit means for producing a drive pulse in response to a return tone signal in the message lines and relay means rendered operative by said drive pulse for disconnecting the message lines from the contact means to prevent recycling.

Claim 14

The combination of claim 10 including frequency-tuned amplifier means connected in parallel with the oscillator and connected to the circuit means for producing a drive pulse in response to a return tone signal in the message lines and relay means rendered operative by said drive pulse for disconnecting the message lines from the contact means to prevent recycling.

Claim 15

The combination of claim 1 including a full-wave rectifier connecting the message lines to the contact means.

Claim 16

In combination with a telephone communication system having message lines across which a voltage is established when loaded at a reporting station, a transmitter including contact means connected to said message lines for programming withdrawal of energy from the message lines, motor means drivingly connected to the contact means for importing movement thereto, an oscillator having an output, loading circuit means rendered operative by the contact means during a message period for connecting the oscillator and the motor means to the message lines to increase the loading thereof, said contact means including a coded element driven by the motor means and stationary brush means connected to the output of the oscillator for conducting a gated signal to the message lines.

Claim 17

In combination with a telephone communication system having message lines across which a voltage is established when loaded at a reporting station, a transmitter including contact means connected to said message lines for programming withdrawal of energy from the message lines, motor means drivingly connected to the contact means for importing movement thereto, an oscillator having an output, loading circuit means rendered operative by the contact means during a message period for connecting the oscillator and the motor means to the message lines to increase the loading thereof, said contact means including a coded element driven by the motor means and stationary brush means connected to the output of the oscillator for conducting a gated signal to the message lines.

Claim 18

The combination of claim 15 wherein said circuit means includes inductive means for establishing AC signal components in response to operation of the oscillator during the message period and current-limiting means for reducing current flow through the motor means.