Anti-theft devices for motor vehicles

• US 5,370,201 A
• Filed: 09/02/1993
• Issued: 12/06/1994
• Est. Priority Date: 09/02/1993
• Status: Expired due to Fees

• Current Assignee: Hajime Inubushi
• Original Assignee: Hajime Inubushi
• Inventors: Inubushi, Hajime
• Primary Examiner(s): Rice, Kenneth R.
• Application Number:
  US08/114,987
• Time in Patent Office: 460 Days
• Field of Search: 180/287
• US Class Current: 180/287
• CPC Class Codes: B60R 25/04 operating on the propulsion system, e.g. engine or drive motor

Abstract

An anti-theft device for a motor vehicle includes in combination an electromagnetic wave receiver, e.g. a cellular telephone, a disabling unit which when energized by the receiver will cause the vehicle'"'"'s engine to stop running and a portable electromagnetic wave transmitter, e.g., a cellular telephone, capable of emitting a signal receptive by the receiver to effect energizing of the disabling unit. In one embodiment, the disabling unit opens the electrical motor control system to stop the engine. In another embodiment, the disabling unit stops flow of fuel to the engine thereby stopping it.

Claims

1. An anti-theft device for a motor vehicle that includes an engine and an electric circuit that controls operation of said engine which comprises in combination:

a first cellular phone,

disabling means which when energized will cause said electric circuit to open thereby stopping operation of said engine,

conductor means operatively connecting said first cellular phone to said disabling means to cause energization thereof, and

a second cellular phone comprising a modulation generator for transmitting a modulated signal receptive by said first cellular phone whereby said first cellular phone only upon receiving said modulated signal may energize said disabling means thereby stopping operation of said engine.

2. A motor vehicle that includes an engine, a fuel tank and a fuel line that conveys fuel from said tank to said engine,

a first cellular phone carried by said motor vehicle,

a solenoid valve positioned in said fuel line that when energized will stop flow of fuel through said fuel line thereby stopping operation of said engine,

a second cellular phone separate from said motor vehicle capable of emitting a signal receptive by said first cellular phone and

conductor means operatively connecting said first cellular phone to said solenoid valve to effect energizing thereof to stop flow of said fuel through said fuel line.

3. The device of claim 2 wherein said engine is a diesel engine.

4. A money transport motor vehicle capable of carrying a security guard aboard which comprises in combination:

an engine,

an electric circuit that controls operation of said engine,

disabling means which when energized will cause said electric circuit to function to stop operation of said engine and to notify said security guard,

a first cellular phone carried aboard said money transport motor vehicle,

conductor means operatively connecting said first cellular phone to said disabling means to cause energization thereof, and

a second cellular phone comprising a modulation generator for transmitting a modulated signal receptive by said first cellular phone whereby said first cellular phone only upon receiving said modulated signal may energize said disabling means.