US 4,218,763 A · Electronic alarm signaling system

Abstract

A controlled electronic alarm signaling system, installed in a vehicle, or other property. The system has a transmitter which broadcasts a coded signal to a companion coded receiving device carried by an authorized person or installed at an authorized remote location. The transmission, which is of limited duration, occurs in response to tampering sensors located on the vehicle or other property which are connected to a control unit. Optionally, the control unit has the capability of switching on audible, visual and mechanical devices installed in the vehicle or other property for deterring and preventing theft, attempted theft, unauthorized entry and tampering. The transmitter is specifically tuned and uniquely coded to a receiving device which, having been activated, will in turn cause audible and other devices to be activated. A magnetic tape player with a speaker connected to the vehicle or other property sounds a warning message. Switching devices, which, when closed, opened, or delayed, activate the vehicle's or other properties' lights, horn, and antenna. The control unit for this system can be programmed by selective wiring for different functions and is installed inside of the vehicle or other property. The entire system is controlled by one 3-position toggle switch mounted inside the vehicle or other property. Provision for an auxiliary power supply is also employed.

Claims39

Dependent claims

An alarm system for protecting a property comprising:

(a) a transmitter for providing a coded signal;
(b) a transmitting antenna connected to the transmitter for broadcasting the coded signal said transmitting antenna including a motor-driven, telescoping member and said control unit includes a means for extending the member immediately before transmission by the transmitter and means for retracting the member immediately after transmission by the transmitter;
(c) a sensor system for sensing unauthorized tampering with the property;
(d) a first power supply for providing electrical energy;
(e) a control unit for controlling the operation of the transmitter, said control unit connected to the sensor system, the first power supply and the transmitter and having a timing means for activating the transmitter for a limited period of time when the sensor indicates unauthorized tampering;
(f) a receiving antenna for receiving the coded signal;
(g) a receiver connected to the receiving antenna for receiving and decoding the coded signal;
(h) a second power supply connected to the receiver for providing electrical energy;
and
(i) a receiver alarm connected to the receiver power supply and the receiver for providing an alarm whenever the receiver receives and decodes the coded signal whereby unauthorized tampering with the property causes the sensor to indicate to the control unit which activates the timing means permitting the transmitter and the transmitting antenna to broadcast for a limited period of time the coded signal which is received by the receiving antenna and the receiver and decoded, resulting in the actuation of the receiver alarm.

7 more elements

An alarm system for protecting a property comprising:

(a) a transmitter for providing a coded signal;
(b) a transmitting antenna connected to the transmitter for broadcasting the coded signal;
(c) a sensor system including a plurality of vehicle door switches and a motion sensor for sensing unauthorized tampering with the property;
(d) a first power supply for providing electrical energy;
(e) a horn
(f) a control unit for controlling the operation of the transmitter, said control unit connected to the sensor system, the first power supply, the horn and the transmitter and having a timing means for activating the transmitter for a limited period of time when the sensor indicates unauthorized tampering, said control unit including a time delay means for delaying activation of at least one of the door switches, thereby allowing an operator to activate the alarm system and exit the vehicle within which the alarm system is installed without activating the transmitter;
(g) a receiving antenna for receiving the coded signal;
(h) a receiver connected to the receiving antenna for receiving and decoding the coded signal;
(i) a second power supply connected to the receiver for providing electrical energy;
(j) a receiver alarm connected to the receiver power supply and the receiver for providing an alarm whenever the receiver receives and decodes the coded signal whereby unauthorized tampering with the property causes the sensor to indicate to the control unit which activates the timing means permitting the transmitter and the transmitting antenna to broadcast for a limited period of time the coded signal which is received by the receiving antenna and the receiver and decoded, resulting in the actuation of the receiver alarm;
(k) means for intermittently actuating the horn during the transmission of the receiver;
and
(l) said control unit including a three-position switch for allowing said system to be connected to a limited mode wherein only the transmitter is activated, in an unlimited mode wherein the transmitter and the horn are activated, and an off mode wherein none of the system is activated.

10 more elements

An alarm system for protecting a property comprising:

(a) a transmitter for providing a coded signal;
(b) a transmitting antenna connected to the transmetter for broadcasting the coded signal;
(c) a sensor system including at least one small appliance sensor for sensing unauthorized tampering with the property;
(d) a first power supply for providing electrical energy;
(e) an auxiliary power supply;
(f) a control unit for controlling the operation of the transmitter, said control unit connected to the sensor system, the first power supply, the auxiliary power supply and the transmitter and having a timing means for activating the transmitter for a limited period of time when the sensor indicates unauthorized tampering, said control unit including a means for disconnecting the first power supply and connecting in place thereof the auxiliary power supply whenever said first power supply is not functioning;
(f) a receiving antenna for receiving the coded signal;
(g) a receiver connected to the receiving antenna for receiving and decoding the coded signal;
(h) a second power supply connected to the receiver for providing electrical energy;
and
(i) a receiver alarm connected to the receiver power supply and the receiver for providing an alarm whenever the receiver receives and decodes the coded signal whereby unauthorized tampering with the property causes the sensor to indicate to the control unit which activates the timing means permitting the transmitter and the transmitting antenna to broadcast for a limited period of time the coded signal which is received by the receiving antenna and the receiver and decoded, resulting in the actuation of the receiver alarm.

8 more elements

An alarm system for protecting a property comprising:

(a) a transmitter for providing a coded signal;
(b) a transmitting antenna connected to the transmitter for broadcasting the coded signal;
(c) a sensor system for sensing unauthorized tampering with the property;
(d) a first power supply for providing electrical energy;
(e) a control unit for controlling the operation of the transmitter, said control unit connected to the sensor system, the first power supply and the transmitter and having a timing means for activating the transmitter for a limited period of time when the sensor indicates unauthorized tampering, said control unit including a reset means for preventing a second indication by the alarm system of tampering after a first indication has occurred except when the alarm system has been deactivated and reactivated after the first indication;
(f) a receiving antenna for receiving the coded signal;
(g) a receiver connected to the receiving antenna for receiving and decoding the coded signal;
(h) a second power supply connected to the receiver for providing electrical energy;
and
(i) a receiver alarm connected to the receiver power supply and the receiver for providing an alarm whenever the receiver receives and decodes the coded signal whereby unauthorized tampering with the property causes the sensor to indicate to the control unit which activates the timing means permitting the transmitter and the transmitting antenna to broadcast for a limited period of time the coded signal which is received by the receiving antenna and the receiver and decoded, resulting in the actuation of the receiver alarm.

7 more elements

Dependencies are inferred from the claim text.

Electronic alarm signaling system

Life of this patent

Electronic alarm signaling system

Life of this patent

Abstract

Claims39