Radio control security system for automobile doors, trunk and hood locks and engine power

• US 4,607,312 A
• Filed: 02/04/1985
• Issued: 08/19/1986
• Est. Priority Date: 08/24/1982
• Status: Expired due to Fees

• Current Assignee: William Barreto-Mercado
• Original Assignee: William Barreto-Mercado
• Inventors: Barreto-Mercado, William
• Primary Examiner(s): Gellner, Michael L.
• Application Number:
  US06/698,230
• Time in Patent Office: 561 Days
• Field of Search: 361/172, 307/10 AT, 307/156
• US Class Current: 361/172
• CPC Class Codes: B60R 25/045 by limiting or cutting the electrical supply to the propulsion unit
• CPC Class Codes: G07C 2009/00793 by Hertzian waves
• CPC Class Codes: G07C 9/00182 operated with unidirectional data transmission between data carrier and locks

Abstract

A radio transmitting and receiving system for operating the doors of an automobile to locked or unlocked condition and unlocking the automobile trunk or hood. The unlocking code may also activate the electric power to the engine starter motor, hood and manual switches of the power door operating motor.

Claims

1. A system for actuating an automobile door locking mechanism to locked or unlocked condition and for actuating an automobile trunk locking mechanism to unlocked condition, comprising:

(a) an automobile having a lock for each automobile door and a lock for the automobile trunk,

(b) means for operating each door lock and means including a trunk transfer switch for operating the trunk lock,

(c) a source of very high frequency radiation located external to the automobile modulated by two different characteristic code signals,

(d) means carried by the automobile for receiving the transmitted radiation and identifying the code signal with which it is modulated,

(e) means operable in respone to the reception and identification of one of said code signals to operate the door locking mechanism to locked condition, and

(f) means operable in response to the reception and identification of the other of said code signals to operate the door locking mechanism to unlocked condition but not the trunk locking mechanism and in closed condition of the trunk transfer switch to operate the trunk locking mechanism to unlocked condition but not the door locking mechanism.

2. The system of claim 1 including a manual door lock unit for each door, a manual lock switch and a manual unlock switch in each unit, said switches being normally arranged to permit operation of said door lock mechanism in response to either of said signals but also arranged that when a signal is received to operate the door locking mechanism to one condition, actuation of a switch to operate the door locking mechanism to the other condition renders the door locking mechanism inoperable while such difference in conditions exist.

3. The system of claim 2 including means for rendering the door locking mechanism inoperable by said manual switches upon operation of the means responsive to said signal to operate the door locking mechanism to locked condition.

4. The system of claim 1 including vehicle power control means responsive to reception of a signal to operate the door locking mechanism to unlocked condition to render the automobile driving means operable and responsive to reception of a signal to operate the door locking mechanism to locked condition to render the automobile driving means inoperable.

5. The system of claim 4 wherein said vehicle power control means includes a power control relay and a latching circuit for retaining said relay energized, said relay and said latching circuit being energized in response to reception of a signal to operate the door locking mechanism to unlocked condition;

and said latching circuit being de-energized to effect de-energization of said relay in response to reception of a signal to operate the door locking mechanism to locked condition.

6. The system of claim 4 including a hood unlocking mechanism, means including a normally open switch on the interior of the vehicle connecting the hood unlocking mechanism to said power control means, and means enabling operation of said hood unlocking mechanism by closing said normally open switch only upon response of said power control means to a signal to operate the door locking mechanism to unlocked condition.

7. The system of claim 1 including a key operated switch carried by said automobile accessible from the exterior thereof, said key operated switch being operable upon insertion of a key to operate the door locking mechanism to unlocked condition.