Motor vehicles – With means for promoting safety of vehicle – its occupant or... – By preventing unauthorized or unintended access or use
Patent
1994-07-07
1995-07-11
Rice, Kenneth R.
Motor vehicles
With means for promoting safety of vehicle, its occupant or...
By preventing unauthorized or unintended access or use
70247, 307 104, 340426, B60R 2510
Patent
active
054312442
DESCRIPTION:
BRIEF SUMMARY
This invention refers to an anti-theft system for automotive vehicles equipped with mechanical transmission. This system is intended to lock the transmission when it is meshed in reverse, thus making it difficult to tow the vehicle and obstructing its normal operation.
At the present time, because of the large number of vehicle stealing, a number of gadgets for protection and security has been used, such as: alarms, padlocks, chains, steering wheel locks, clutch pedal locks, etc. These contrivances render the stealing more difficult, thus discouraging theft.
Also mechanical contrivances that actuate on the transmission shift lever are well known and widely used, obstructing shift lever movement, thus locking the transmission in a selected mesh. These are contrivances equipped with several types of mechanical lock (a padlock, for instance) adapted or mounted on the outside of the transmission case, more precisely on the lever itself, above the floor of the vehicle.
These gadgets are of simple adaptation and easily installed, but not efficacious, because they can be removed or easily violated, because of free access. The mechanical locks used in such systems, equipped with a key or a padlock, are easily violated with the use of falsified keys, or even by breaking.
Those which use electronic alarms, or similar systems, can also be easily violated: once the horn or the headlights have been disconnected, no further signal is possible to alert the stealing of the vehicle.
The objective of this invention is to provide a mechanical-electrical-electronic device capable of locking the transmission in reverse, and which can be mounted inside the transmission, or onto the transmission case, barring easy access and possible violation, besides providing an actuating system that makes it impossible the unlocking of the transmission by a person other than the owner of the vehicle himself. Such a system consists of the actuation of a device (with a blocking pin inside of the transmission) through an electronic central, controlled by a keyboard, of easy access for the user, by means of a personal code number.
Such an objective was attained, in accordance with the invention, because the mounting of the locking device on the transmission, under the vehicle floor, eliminates the problem of easy access to the system itself, and the use of a personal code number makes it impossible any violation of the actuating system, since only the use of the right code number will make it possible to unlock the transmission.
It must be said that there are vehicles the transmissions of which are not positioned under the floor, but in other positions, also of difficult access.
The system is composed of: to actuate the locking device; and, unlocking of the shift lock system.
The shift lock device consists of the actuation of a solenoid capable of actuating a mechanical locking system, based on the positioning of an actuating pin which, introduced in a hole in the reverse shift bar or fork, will block its course in any direction. With the reverse in mesh, the pin will also actuate on the end of the shift bar or on the face of the shift fork, thus barring the course back into the out of mesh position. The area of the actuation of the pin depends on the model of the transmission, since each transmission has a well differentiated control system. The electronic central will receive information from the keyboard, conducted by wiring inside of a duct coupled to the shift lever, and from two more signals external to the system, also conducted by wiring: ignition (engine off) and reverse light switch (reverse in mesh). Without the correct recognizance of these items of information, the central will not allow the operation of the system. If the information is correct, an electrical signal will be sent which, under the action of the solenoid, will command the forward course or the retrieval of the actuating pin. This central must have an outlet for an alarm, for the purpose of actuating it in case of an attempt to violate the system. The outlet can be mou
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Equipamentos Clark Ltda.
Rice Kenneth R.
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