Wireless alarm system in conjunction with at least one vehicle

• US 4,523,178 A
• Filed: 02/22/1982
• Issued: 06/11/1985
• Est. Priority Date: 02/22/1982
• Status: Expired due to Term

• Current Assignee: George E Fulhorst
• Original Assignee: George E Fulhorst
• Inventors: Fulhorst, George E.
• Primary Examiner(s): Swann, III, Glen R.
• Application Number:
  US06/351,200
• Time in Patent Office: 1,205 Days
• Field of Search: 340/539, 340/64, 340/63
• US Class Current: 340/426.13
• CPC Class Codes: G08B 21/0213 System disabling if a separation threshold is exceeded disabling electrical appliances in case of unplugging G08B13/1409
• CPC Class Codes: G08B 21/0227 System arrangements with a plurality of child units
• CPC Class Codes: G08G 1/0965 responding to signals from another vehicle, e.g. emergency vehicle

Abstract

An operator carries a portable transmitter when away from a parked vehicle. In the event of an emergency condition, the operator manually activates the portable transmitter to transmit within a prescribed area a coded signal. Vehicles located within the prescribed area have receivers installed therein. When the receivers detect the coded signal transmitted by the portable transmitter, the receivers are activated to operate vehicle devices, such as horns, in the associated vehicles to indicate an alarm condition. The ignition system of each vehicle is enabled for operation by the insertion of a transmitter in a receptacle associated with the ignition system. The removal of the transmitter from the associated receptacle disables the associated ignition system. The placement of the transmitter in a receptacle disables the transmitter and the removal of the transmitter from the associated receptacle enables the transmitter.

Claims

1. A wireless alarm system comprising:

(a) a portable radio frequency transmitter for transmitting a coded signal;

(b) a plurality of radio frequency receivers for receiving said coded signal, each of said radio frequency receivers comprising;

(1) first means for detecting said coded signals, and

(2) second means activated in response to the detection of said coded signals; and

(c) a plurality of vehicle means activated respectively in response to a plurality of said second means'"'"' being activated respectively for indicating an alarm condition.

2. A wireless alarm system comprising:

(a) a portable radio frequency transmitter for transmitting a coded signal, said transmitter including an encoder for transmitting a tone coded signal;

(b) a plurality of radio frequency receivers for receiving said coded signals, each of said radio frequency receivers comprising;

(1) first means for detecting said coded signal, and

(2) second means activated in response to the detection of said coded signal, said second means including a decoder for detecting said coded signal; and

(c) a plurality of vehicle means activated respectively in response to a plurality of said second means'"'"' being activated respectively for indicating an alarm condition.

3. A wireless alarm system comprising:

(a) a portable radio frequency transmitter for transmitting a coded signal;

(b) a radio frequency receiver for receiving said coded signal, said radio frequency receiver comprising;

(1) first means for detecting said coded signal, and

(2) second means activated in response to the detection of said coded signal;

(c) vehicle means activated in response to said second means being activated for indicating an alarm condition;

(d) said second means including a timer activated in response to the detection of said coded signal for operating said vehicle means to indicate an alarm condition, said timer including reset means to restore said timer to its initial deactivated state; and

(e) a vehicle including an ignition circuit, and means in said ignition circuit operative during the start-up and shut-down cycle of said ignition circuit for operating said reset means to restore said timer to its initial deactivated state.

4. A wireless alarm system as claimed in claim 3 wherein said means in said ignition circuit for operating said reset means includes a starter coil, and said reset means includes contacts opened and closed through the energization and deenergization of said coil.

5. A wireless alarm system as claimed in claim 3 wherein said timer includes automatic reset means to restore said timer to its initial deactivated state upon the expiration of a preselected period of time.