AUTO WARM-UP THEFT PREVENTING APPARATUS

• US 3,850,260 A
• Filed: 02/12/1973
• Issued: 11/26/1974
• Est. Priority Date: 02/12/1973
• Status: Expired due to Term

• Current Assignee: Gerhard E. Obermeit
• Original Assignee: Gerhard E. Obermeit
• Inventors: Obermeit, Gerhard E.
• Primary Examiner(s): Schonberg, David
• Assistant Examiner(s): Rubenstein, Jack D.
• Application Number:
  US05/331,579
• Time in Patent Office: 652 Days
• Field of Search: 180/114 340/63 307/1AT
• US Class Current: 180/287
• CPC Class Codes: B60R 25/04 operating on the propulsion system, e.g. engine or drive motor
• CPC Class Codes: B60R 25/21 using hidden switches

Abstract

This invention is an auto warm-up theft preventing apparatus operable to de-energize the ignition system of a vehicle on the depression of the brake pedal to cease non-authorized movement of the vehicle. More particularly, this invention is a theft preventing apparatus having a mechanical means inter-connected by an electrical circuit means whereupon the ignition system is controlled through a concealed switch and a pair of relay members to energize the ignition circuit and operable on opening of the concealed switch member to de-energize the ignition system circuit on depression of the brake switch.

Claims

1. A theft preventing apparatus, comprising:

a. a power supply, b. a first switch member connected to said power supply to receive current therefrom, c. a second switch member connected to said power supply to receive current therefrom, d. a control circuit connected to said first switch member and said second switch member and connected to an ignition circuit for energization of a vehicle, e. said control circuit having a third switch member, a fourth switch member, and a fifth switch member f. means for passing current from said first switch member to said third switch member to said ignition circuit;

from said first switch member To said fourth switch member to said ignition circuit; and

from said second switch member to said fifth switch member to said fourth switch member, whereby, under one set of conditions, said first switch member is operable in closed condition to energize said ignition circuit for normal vehicle operation and, under a second set of conditions, said third switch member in the opened condition with said first switch member and said fourth switch member in the closed condition operate to energize said ignition circuit and, under a third set of conditions, operation of said second switch member operates to open said fourth switch member and de-energize said ignition circuit.

2. A theft preventing apparatus as described in claim 1, wherein:

a. said first switch member is an ignition switch operable by a key member to open and close the same, and b. said second switch member is a normally opened brake switch member operated by a brake pedal assembly to de-energize said fourth switch member and open said means for passing current from said first switch member to said fourth switch member to said ignition circuit to de-energize said ignition circuit.

3. A theft preventing apparatus as described in claim 2, including:

a. said third switch member is mounted in a concealed position in the vehicle whereupon its movement to its normally closed condition is required in combination with closing of said ignition switch member to energize the ignition circuit for normal operation, b. said third switch member in the closing condition is operable to move said fourth switch member from the normal opened condition to the closed condition whereupon the ignition circuit is energized through said fourth switch member regardless of the positioning of the third switch member, c. said fifth switch member is operable in its normally closed condition to hold said fourth switch member in the closed condition to energize said ignition circuit, and d. said fifth switch member is moved from its normally closed condition to the opened condition to de-energize said fourth switch member on actuation of said brake switch member to de-energize said ignition circuit which thereupon can not be energized without actuation of the concealed said third switch member.

4. A theft preventing apparatus as described in claim 3, wherein:

a. said fourth switch member is a normally opened relay member having its contacts moved to the closed condition on energization of said third switch member and in combination with said fifth switch member, and b. said fifth switch member is a normally closed relay member moved to the opened condition on closure of said brake switch member which, in turn, de-energizes said normally opened relay member.