US 4,232,758 AGranted

Electromechanical anti-theft system for automobile vehicle

OwnerPedro B. Crosasinventor

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Abstract

Electrovalves are opened in automobile piping of a brake line, a clutch line and a fuel line by a current through normally open contacts of a plurality of control relays and through normally closed contacts of an interlocking relay. The control relays are operated by selected switches of a plurality of push-button switches while the interlocking relay is operated by the non-selected switches of the plurality of switches. The control relays are interconnected so that the selected push-button switches must be operated in a selected sequence. All the relays have holding circuits.

Claims3

Dependent claims

An electromechanical anti-theft system for an automobile vehicle having piping forming a brake line, a clutch line and a fuel line, the system comprising

three unidirectional solenoidal electrovalves for being situated in the piping of the brake line, the clutch line and the fuel line of the automobile vehicle, respectively;
a plurality of first control electromechanical relays each having a relay, each control relay except for a last control relay of said plurality of control relays winding and at least three normally open contact switches ;
a second control relay having a winding and at least two normally open contact switches;
an interlocking electromechanical relay having a relay winding, at least two normally closed contact switch means, and one normally open contact switch means;
means for connecting the system to an electrical power source;
series circuit means connected with the three electrovalves across the power source connecting means;
said series circuit means including at least one of said normally open contact switches of each of the first and second control relays and one of said normally closed contact switch means of the interlocking relay;
a second of said normally open contact switches of each of said first and second control relays connected in a respective series holding circuit including the corresponding relay winding and the second normally closed contact switch means of the interlocking relay across the power source connecting means;
said normally open contact switch means of the interlocking relay connected in series with the relay winding of the interlocking relay across the power source connecting means;
a plurality of first normally open push button switches corresponding to the plurality of control relays;
one of said first push button switches connected in a series circuit including the relay winding of the corresponding relay, and the second normally closed contact switch means of the interlocking relay across the power source connecting means;
each of the other first push button switches connected in a respective series operating circuit including the corresponding relay winding, the third normally open contact switch of the respective preceding first control relay, and the second normally closed contact switch means of the interlocking relay across the power source connecting means;
and
a plurality of second normally open push button switches all connected in parallel with each other and in series with the relay winding of the interlocking relay across the power source connecting means.

11 more elements

Dependencies are inferred from the claim text.

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Abstract

An electromechanical anti-theft system for an automobile vehicle having piping forming a brake line, a clutch line and a fuel line, the system comprising

three unidirectional solenoidal electrovalves for being situated in the piping of the brake line, the clutch line and the fuel line of the automobile vehicle, respectively;
a plurality of first control electromechanical relays each having a relay, each control relay except for a last control relay of said plurality of control relays winding and at least three normally open contact switches ;
a second control relay having a winding and at least two normally open contact switches;
an interlocking electromechanical relay having a relay winding, at least two normally closed contact switch means, and one normally open contact switch means;
means for connecting the system to an electrical power source;
series circuit means connected with the three electrovalves across the power source connecting means;
said series circuit means including at least one of said normally open contact switches of each of the first and second control relays and one of said normally closed contact switch means of the interlocking relay;
a second of said normally open contact switches of each of said first and second control relays connected in a respective series holding circuit including the corresponding relay winding and the second normally closed contact switch means of the interlocking relay across the power source connecting means;
said normally open contact switch means of the interlocking relay connected in series with the relay winding of the interlocking relay across the power source connecting means;
a plurality of first normally open push button switches corresponding to the plurality of control relays;
one of said first push button switches connected in a series circuit including the relay winding of the corresponding relay, and the second normally closed contact switch means of the interlocking relay across the power source connecting means;
each of the other first push button switches connected in a respective series operating circuit including the corresponding relay winding, the third normally open contact switch of the respective preceding first control relay, and the second normally closed contact switch means of the interlocking relay across the power source connecting means;
and
a plurality of second normally open push button switches all connected in parallel with each other and in series with the relay winding of the interlocking relay across the power source connecting means.

11 more elements