GB2211552A - Theft prevention device for automobiles - Google Patents
Theft prevention device for automobiles Download PDFInfo
- Publication number
- GB2211552A GB2211552A GB8824423A GB8824423A GB2211552A GB 2211552 A GB2211552 A GB 2211552A GB 8824423 A GB8824423 A GB 8824423A GB 8824423 A GB8824423 A GB 8824423A GB 2211552 A GB2211552 A GB 2211552A
- Authority
- GB
- United Kingdom
- Prior art keywords
- theft prevention
- door
- relay
- switch
- automobile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/20—Means to switch the anti-theft system on or off
- B60R25/21—Means to switch the anti-theft system on or off using hidden switches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
- B60R25/04—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the propulsion system, e.g. engine or drive motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/10—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
- B60R25/1001—Alarm systems associated with another car fitting or mechanism, e.g. door lock or knob, pedals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/10—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
- B60R25/1004—Alarm systems characterised by the type of sensor, e.g. current sensing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/10—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
- B60R25/1003—Alarm systems characterised by arm or disarm features
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Burglar Alarm Systems (AREA)
- Lock And Its Accessories (AREA)
Abstract
A theft prevention device suitable for use in an automobile is provided having a theft prevention switch adapted for use in an engine starter circuit 34 of the automobile. The theft prevention switch is openable when a door 2, 16, 18, 20, Fig 2, of the automobile is locked according to a predetermined process using a laser key, a key plate, or keyless locking and closable when the door 2, 16, 18, 20 is unlocked with the proper means. The theft prevention device also has a self-holding relay 55 energizable when said door 2, 16, 18, 20 is locked according to the predetermined process, said self-holding relay 55 having a relay contact 94 used as the theft prevention switch. A method of preventing a theft from an automobile is also provided. An alarm 71 may be activated if the driver leaves the ignition key in place or omits to lock a door. Horn 37 may be sounded if an attempt to break into the vehicle is made. <IMAGE>
Description
THEFT PREVENTION DEVICE FOR AUTOMOBILES
The present invention relates to a theft prevention device for an automobile, including a theft prevention switch in an engine starter circuit of the automobile, which switch will automatically be opened in response to the detection of locking of automobile doors from outside of the automobile according to a predetermined process, e.g., with a key, to prevent the engine from being started subsequently even if an engine starter switch is turned on, the theft prevention switch remaining open unless the doors are unlocked by legitimate means such as a key.
Conventional theft prevention devices for automobiles, after they have been set into an actuated condition, can be inactivated into an initial condition by cutting off the power supply while in the actuated condition.
Therefore, if the engine hood of an automobile with an actuated theft prevention device is prised open and the power supply is cut off by an unauthorized person, then the theft prevention device is inactivated, making the automobile unprotected against theft or tampering.
It is an object of the present invention to provide an automobile theft prevention device which will not be inactivated and will keep an engine starter circuit open thereby preventing an automobile engine from being started even if the power supply is cut off while the automobile theft prevention device is being actuated.
According to the present invention, there is provided a theft prevention device in an automobile, comprising a theft prevention switch in an engine starter circuit of the automobile, said theft prevention switch being openable when a door of the automobile is locked according to a predetermined process and closable when said door is unlocked with proper means, and a self-holding relay energizable when said door is locked according to the predetermined process, said self-holding relay having a relay contact used as said theft prevention switch.
The above and other objects, features and advantages of the present invention will become more apparent from the following description when taken in conjunction with the accompanying drawings in which preferred embodiments of the present invention are shown by way of illustrative example.
FIG. 1 is a block diagram of a theft prevention device according to an embodiment of the present invention;
FIG. 2 is a schematic plan view of an automobile, showing switches and sensors of the theft prevention device which are mounted on the automobile;
FIGS. 3 through 5 are flowcharts of operation sequences of the theft prevention device; and
FIG. 6 is a sequence circuit diagram of a theft prevention device according to another embodiment of the present invention.
A theft prevention device as incorporated in a wagon-type automobile will be described below.
FIG. 2 shows various switches and sensors of the theft prevention device which are mounted on the automobile.
An inside locking lever switch 1 is mounted on a compartment side of a driver door 2 for detecting whether an inside locking lever (knob) for locking the door from within the automobile is locked or unlocked. A key unlock switch 3 is disposed in a key cylinder mounted in the driver door 2 and is operable when the driver door 2 is unlocked by a key plate. A key lock switch 4 is also disposed in the key cylinder mounted in the driver door 2 and is operable when the driver door 2 is locked by the key plate. A laser key light detector 5 is mounted in the driver door 2 for detecting a locking/ unlocking signal represented by a laser beam emitted from a laser key (remote control key). An ignition key cylinder switch 6 is mounted in an ignition key cylinder disposed near a steering wheel for detecting whether the key plate is inserted in an ignition key cylinder or not.An opener knob 8 is used to unlock and open an engine hood 24.
A hood lock device 9 is actuated by the opener knob 8 to unlock the engine hood 24. The opener knob 8 and the hood lock device 9 are interconnected by an opener cable 11 through a release mechanism 10 which selectively transmits actuating forces from the opener knob 8 to the hood lock device 9. An outside handle switch 12 is mounted on an outer panel of the driver door 2 for detecting whether an outside handle on the outer panel of the driver door 2 is operated or not. A seat switch 13 is disposed on a driver's seat for detecting the driver is seated on the driver' seat or not. A door switch 14 is mounted on the automobile body for detecting whether the driver door 2 is opened or closed, and a door switch 15 is mounted on the automobile body for detecting whether a front passenger door 16 is opened or closed.Door switches 17, 20 are also mounted on the automobile body for detecting whether respective righthand and lefthand rear passenger doors 18, 20 are opened or closed.
A hood switch 21 serves to detect whether the engine hood 24 is opened or closed. A door switch 22 is mounted on the automobile body for detecting a back door 23 is opened or closed. The driver door 2, the front passenger door 16, and the rear passenger doors 18, 20 have glass breakage sensors 25, 26, 27, 28, respectively, for detecting the breakage of corresponding door glass panels. Such glass breakage sensors may be attached to all glass panels on the automobile.
A key locking switch 29 is mounted in a key cylinder in the back door 23 for detecting when the back door 23 is locked.
Inside lever switches 30, 31, 32 are mounted on respective inside panels of the front and rear passenger doors 16, 18, 20 for detecting whether inside levers on these doors are operated or not.
FIG. 1 shows in block form the theft prevention device. The theft prevention device includes a control circuit 33 for receiving signals from the switches and sensors described above and effecting various controlling operations. The theft prevention device also has a release mechanism circuit 35 for energizing an actuator in the release mechanism 10 in response to an output signal from the control circuit 33. A warning circuit 36 energizes a horn 37 in response to a horn starting signal or a horn stopping signal from the control circuit 33. The warning circuit 36 is connected to a secret switch 87 which, when turned on, resets the warning circuit 36. A self-holding relay (Ry) 55 which is actuated by an output signal from the control circuit 33 has a relay contact 94 serving as a theft prevention switch connected between a battery 50 and an engine starter circuit 34. Since the relay (Ry) 55 with the relay contact 94 is of the self-holding type, once the relay (Ry) 55 is actuated by an output signal from the control circuit 33, the relay contact 94 remains mechanically closed even when the power supply of the self-holding relay (Ry) 55 is turned off. An alarm circuit 38 energizes an alarm 71 in response to an output signal from the control circuit 33.
Operation of the theft prevention device thus constructed will be described below with reference to FIGS. 3, 4, and 5.
FIG. 3 is a flowchart schematically showing an operation sequence until the theft prevention device is set into an actuated condition. When the driver door 2 is opened, the control circuit 33 executes the following decision steps to determine whether the theft prevention device is to be set or not. The control circuit 33 determines whether a person is seated on the driver's seat based on a signal from the seat switch 13 in a step 1. If not, then the control circuit 33 determines whether the key is pulled from the ignition key cylinder based on a signal from the ignition key cylinder switch 6 in a step 2. If the key is pulled, then the control circuit 33 monitors whether the doors will be locked according to a predetermined process, i.e., they will be locked by the laser key, or the key plate, or keyless locking.Locking of the doors with the laser key is detected by detecting the closing of the driver door 2 based on a signal from the door switch 14, thereafter detecting a locking signal from the laser key with the laser key light detector 5, and then detecting the locking of the inside locking lever based on a signal from the inside locking lever switch 1. Locking of the doors with the key plate is detected by detecting the closing of the driver door 2 based on a signal from the door switch 14, thereafter detecting the locking of the key lock based on a signal from the key lock switch 4, and then detecting the locking of the inside locking lever based on a signal from the inside lock ing lever switch 1.The keyless locking of the doors is detected by detecting the locking of the inside locking lever based on a signal from the inside locking lever switch 1, thereafter detecting the closing of the driver door 2 based on a signal from the door switch 14, and detecting that the inside locking lever still remains locked at this time. If the doors are locked with the laser key in a step 3 or if the doors are locked with the key plate or the keyless locking in a step 4, then the control circuit 33 determines in a step 5 whether the back door 23 is locked based on signals from the door switch 22 and the key lock switch 29. If the back door 23 is locked, then the control circuit 33 sets the theft prevention device into an actuated condition in a step 6. In the step 6, the self-holding relay 55 is actuated to open the relay contact 94 to keep the engine starter circuit 34 open.The release mechanism circuit 35 is also energized to drive the actuator in the release mechanism 10 to prevent actuating forces from being transmitted from the opener knob 8 to the hood lock device 9. Moreover, the warning circuit 36 is closed so that it is armed or ready for operation, and the alarm circuit 38 is opened.
If it is found in the step 2 from the signal of the ignition key cylinder switch 6 that the key plate is not pulled from, i.e., remains inserted in, the ignition key cylinder, then a step 7 determines whether the driver door 2 is open or not based on a signal from the door switch 14.
If the driver door 2 is closed, then control goes back to the step 1 to continue the monitoring process. If the driver door 2 is open, then a step 8 determines whether the inside locking lever is in the locked position based on a signal from the inside locking lever switch 1. If not in the locked position, control returns to the step 1 for the continued monitoring process. If in the locked position, since there is the danger of keyless locking while the key plate is being inserted in the ignition key cylinder (i.e., the key plate is locked in), the alarm circuit 38 is ener gibed to turn on the alarm 71 giving an alarm signal to the driver in a step 9. After the alarm 71 has been energized for a predetermined period of time (e.g., 30 seconds), control goes back to the step 1 to continue the monitoring process.If the back door 23 is not locked in the step 5, control also goes to the step 9 to turn on the alarm 71, thus alarming the driver.
FIG. 4 shows an operation sequence executed when there is an attempted automobile theft while the theft prevention device is being set or actuated. After the theft prevention device has been set in the step 6, a step 10 determines whether an abnormal condition has occurred or not. Such an abnormal condition can be detected by confirming::
(1) Whether the inside locking lever has moved from the locked position to the unlocked position (this is deter mined by signals from the inside locking lever switch 1 and the inside lever switches 30, 31, 32);
(2) Whether the driver door 2, the front passenger door 16, the rear righthand passenger door 18, the rear lefthand passenger door 20, or the back door 23 has been opened (this is determined by signals from the door switches 14, 15, 17, 19, 22);
(3) Whether the engine hood 24 has been opened (this is determined by a signal from the hood switch 21); or
(4) Whether a window glass panel has been broken (this is determined by signals from the glass breakage sensors 25, 26, 27, 28).
If an abnormal condition has been confirmed in the step 10, then a step 11 determines whether the secret switch 87 is turned on or off. If it is turned on, then the warning circuit 36 is energized to turn on the horn 37, thus indicating an attempted automobile theft in a step 12. A next step 13 checks if the horn 37 has been energized for one minute. If one minute has not elapsed yet, control returns to the step 11. Upon elapse of one minute, the horn 37 is de-energized in a step 14. If the secret switch 87 is turned off in the step 11, then control also goes to the step 14.
FIG. 5 shows an operation sequence for inactivating the theft prevention device. After the theft prevention device has been set in the step 6, a step 15 determines whether the automobile doors are unlocked by the laser key or not. More specifically, unlocking by the laser key is confirmed by detecting an unlocking signal emitted from the laser key with the laser key light detector 5, and thereafter detecting movement of the inside locking lever switch 1 into the unlocked position. If the automobile doors are not unlocked using the laser key, then a step 16 checks if the automobile doors are unlocked by the key plate. More specifically, unlocking by the key plate is confirmed by detecting the unlocked condition with the key unlock switch 3 and detecting the unlocked condition with the inside locking lever switch 1. If unlocking by the key plate is not detected in the step 16, control goes back to the step 6 for continuing the monitoring process. If unlocking by the laser key in the step 15 or unlocking by the key plate in the step 16 is detected, then the theft prevention device is inactivated. More specifically, the self-holding relay (Ry) 55 is actuated to close the relay contact 94 to close the engine starter circuit 34. The release mechanism circuit 35 is energized to drive the actuator in the release mechanism 10 to enable the release mechanism 10 to transmit actuating forces from the opener knob 8 to the hood lock device 9.
The warning circuit 36 is opened, and the alarm circuit 38 is closed, thereby completing the operation sequence.
With the above arrangement, since the self-holding relay 55 is provided, even if the power supply of the theft prevention device is cut off, the engine starter circuit 34 remains open, thereby preventing the engine from being started. Furthermore, if the doors are to be locked by keyless locking while the key plate remains inserted in the ignition key cylinder, the alarm 71 is energized to give the driver an alarm signal. When the driver forgets to lock the back door 23, an alarm signal is issued in the step 9 to let the driver know the unlocked condition of the back door 23.
The present invention is not limited to the above embodiment. While in the above embodiment an alarm signal is produced in the step 9 when the driver forgets to lock the back door 23, and then control goes back to the step 1, the theft prevention device may be set in the step 6 after such an alarm signal has been issued.
The control circuit as described above comprises a microcomputer, but may be constructed of a sequence control circuit as illustrated in FIG. 6 (the theft prevention device is shown as being inactivated).
Denoted in FIG. 6 at 40, 42 are power supply lines and 41, 43 ground lines.. A battery 50 has a positive terminal connected to terminals B1, Bil, B21. Between terminals
Cull, C12, there is connected the inside locking lever switch 1 which is normally closed that is connected in series with a relay (I) 51. The seat switch 13 which is normally open is connected between terminals C3, C13 and also connected in series with a relay (C) 52. The door switch 14 which is normally closed for detecting the driver door 2 has one terminal connected to a terminal C2 and other terminal grounded. A relay (D) 53 is connected in series with the door switch 14 through a reverse-current blocking diode 54.
The key unlock switch 3 which is normally open is connected between terminals C4, C14. Connected parallel to the key unlock switch 3 is a normally-open laser key unlock contact 54a which is movable in response to an unlocking signal received by the laser kay light detector 5. The selfholding relay (Ry) 55 has a resetting relay (RR) 55a and a setting relay (RS) 55b. The self-holding relay (Ry) 55 also includes a mechanism which, when one of these relays 55a, 55b is energized, mechanically holds the relay contacts in one condition until the other rely is energized. The resetting relay (RR) 55a is connected in series with the key unlock switch 3. The key lock switch 4 which is normally open is connected between terminals C7, C17.Coupled in series with the key lock switch 4 are the resetting relay (RS) 55b of the relay 55, a normally closed relay contact 56 of the relay (C) 52, and a normally closed relay contact 57 of the relay (I) 51. Diodes 58, 59 serve to protect the relays 55a, 55b.
A laser key lock contact 60 is connected parallel to the key lock switch 4, the layer key lock contact 60 being a normally open contact which is movable in response to a locking signal received by the laser key light detector 5. The relay (D) 53 has a normally closed relay contact 61 and a normally open relay contact 62 which are connected in series with each other and parallel to the key lock switch 4. Between terminals C8, C18, there is connected the outside handle switch 12 which is connected in series with a relay (D1) 63 and a relay contact 64 thereof. The relay contact 64 is coupled parallel to the relay contact 62.
The relay (D1) 63 is protected by a diode 65. The ignition key cylinder switch 6 is connected between terminals C26,
C34 and in series with a relay (A) 66. The relay (A) 66 has one terminal joined to a line interconnecting the relay (D1) 63 and the relay contact 64. A reverse-current block diode 67 is connected to the ignition key cylinder switch 6, and a diode 68 is connected parallel to the relay (A) 66 for protecting the same. The relay (A) 66 has a normally open relay contact 69 which is connected parallel to a selector switch 70 and the alarm 71. The self-holding relay (Ry) 55 has a relay contact 72 which can be opened when the resetting relay (RR) 55a is energized, and closed when the setting relay (RS) 55b is energized.The relay contact 72 is connected in series with a relay (Al) 73 and also with one terminal of the normally closed key lock switch 29 for the back door 23 through a terminal C17, the other terminal of the key lock switch 29 being grounded. The relay (Al) 73 has a normally open relay contact 74 connected parallel to the relay contact 69. The relay (Al) 73 is protected by a diode 75. The hood switch 21 which is normally closed has one terminal connected to a terminal C5 and the other terminal grounded. The door switch 22 which is normally closed has one terminal connected to a terminal C24 and the other terminal connected to ground. The door switches 14, 15, 17, 19 which are parallel to each other have terminals connected to a terminal C1, and the other terminals grounded. The terminals C5, C24, C1 are coupled parallel to each other.A reverse-current blocking diode 74 is connected to the terminal C1. The relay (I) 51 has a relay contact 77 coupled parallel to the hood switch 21. The hood switch 21, the door switch 22, the door switches 14, 15, 17, 19, and the relay contact 77 are connected in series with a relay (T) 78. The glass breakage sensors 25 through 28 and the inside lever switches 30 through 32 are connected parallel to each other between terminals C28, C36. The terminal C36 is grounded, and a relay (G) 79 is coupled to the terminal C28.
A reverse-current blocking diode 80 is connected to the power supply line 40.
An actuator 81 in the release mechanism is connected between terminals B5, B6. The self-holding relay (Ry) 55 has a relay contact 82 connected to the release mechanism circuit 35. The relay contact 82 can be connected to a contact UL when the resetting relay (RR) 55a is energized, and to a contact L when the setting relay (RS) 55b is energized. The release mechanism 35 has therein a relay (UL) 83 which is energized for a certain period of time (e.g., 0.5 sec.) when the relay contact 82 is connected to a contact UL, and a relay (L) 84 which is energized for a certain period of time (e.g., 0.5 sec.) when the relay contact 82 is connected to a contact L. The relay (L) 84 has a relay contact 85 which can be moved from a contact a to a contact b when the relay (UL) 83 is energized.The secret switch 87 which is normally open, a normally open relay contact 88 of the relay (T) 78, and a normally open relay contact 89 of the relay (G) 79 are all connected to the warning circuit 36. The terminal UL of the relay contact 82 and the warning circuit 36 are connected to each other through a reverse-current blocking diode 90. When the secret switch 87 is open and the relay contact 82 is connected to the contact L, the warning circuit 36 is armed or ready to produce a warning signal. A relay (Ry3) 91 is disposed in the warning circuit 36 and can be moved when the relay contact 88 or 89 is closed. The relay (Ry3) 91 has a normally open contact 92. The horn 37 is connected between terminals B2,
B21, the terminal B21 being coupled to the positive terminal of the battery 50. To the terminal B2, there is connected one terminal of the relay contact 92, the other terminal of which is connected to ground. A horn switch 93 has one terminal grounded and the other terminal connected to the horn 37. The self-holding relay (Ry) 55 has a normally closed relay contact 94 which is opened when the setting relay (RS) 55b is energized, and remains mechanically open until the resetting relay (RR) 55a is energized. A relay (St) 95 is connected in series with the relay contact 94.
In the engine starter circuit 34, a starter motor 96, an ignition switch 97, and a normally closed contact 98 of the relay (St) 95 between terminals B3, B7 are connected in series with the battery 50.
The relay contacts of the self-holding relay (Ry) 55 serve to setting not only the engine starter circuit 34 but also the release mechanism circuit 35 and the warning circuit 36. Therefore, when the power supply is cut off and then restored during an attempted automobile theft, the engine starter circuit 34 remains open and also the horn 37 is energized to give a warning signal indicating the attempted theft. Since the release mechanism 35 is also actuated, the engine hood 24 cannot be opened even by operating the hood opener 8.
With the present invention, as described above, even if the power supply is cut off while the theft prevention device is being set, the engine starter circuit remains open to prevent the engine from being started.
The theft prevention device may be set into an actuated condition only when the doors are locked using the laser key, or only when the doors are locked using the key plate, or only when the doors are locked by the keyless locking, so that an unset condition can be selected.
Although certain preferred embodiments have been shown and described, it should be understood that many changes and modifications may be made therein without departing from the scope of the appended claims.
Claims (10)
1. A theft prevention device suitable for use in an automobile, comprising:
a theft prevention switch adapted for use in an engine starter circuit of the automobile so that said theft prevention switch is openable when a door of the automobile is locked according to a predetermined process and closable when said door is unlocked with proper means; and
a self-holding relay energizable when said door is locked according to the predetermined process, said self-holding relay having a relay contact used as said theft prevention switch.
2. A theft prevention device as claimed in claim 1, wherein said theft prevention switch can be opened only when said door is locked with a laser key.
3. A theft prevention device as claimed in claim 1, wherein said theft prevention switch can be opened only when said door is locked with a key plate.
4. A theft prevention device as claimed in claim 1, wherein said theft prevention switch can be opened only when said door is locked by keyless locking.
5. A method of preventing theft from an automobile which comprises installing in the automobile a theft prevention switch in an engine starter circuit of the automobile, said theft prevention switch being openable when a door of the automobile is locked according to a predetermined process and closable when said door is unlocked with proper means; and a self-holding relay energizable when said door is locked according to the predetermined process, said self-holding relay having a relay contact used as said theft prevention switch.
6. A method as claimed in claim 5, wherein said theft prevention switch can be opened only when said door is locked with a laser key.
7. A method as claimed in claim 5, wherein said theft prevention switch can be opened only when said door is locked with a key plate.
8. A method as claimed in claim 5, wherein said theft prevention switch can be opened only when said door is locked by keyless locking.
9. A theft prevention device as claimed in any one of claims 1 to 4 substantially as hereinbefore described and as shown in the drawings.
10. A method of preventing theft as claimed in any one of claims 5 to 8 substantially as hereinbefore described with reference to the drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62267128A JPH01109147A (en) | 1987-10-22 | 1987-10-22 | Theft proof device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8824423D0 GB8824423D0 (en) | 1988-11-23 |
| GB2211552A true GB2211552A (en) | 1989-07-05 |
Family
ID=17440459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8824423A Withdrawn GB2211552A (en) | 1987-10-22 | 1988-10-19 | Theft prevention device for automobiles |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH01109147A (en) |
| GB (1) | GB2211552A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2700308A1 (en) * | 1993-01-13 | 1994-07-13 | Bally Philippe | Global interactive safety device for all motorized vehicles. |
| FR2705073A1 (en) * | 1993-04-15 | 1994-11-18 | Deutsche Aerospace | Device for protecting passenger cars and commercial vehicles against theft using a coded key. |
| FR2721882A1 (en) * | 1994-07-04 | 1996-01-05 | Valeo Securite Habitacle | Key detector for vehicle anti-theft system |
| EP0822127A1 (en) * | 1996-07-31 | 1998-02-04 | Toyota Jidosha Kabushiki Kaisha | Vehicle theft prevention device |
| WO1999007584A1 (en) * | 1997-08-07 | 1999-02-18 | The Regents Of The University Of California | Optical key system |
| WO2005007456A1 (en) * | 2003-07-16 | 2005-01-27 | Nissan Technical Centre Europe Ltd | Lockable vehicle storage in response of doors |
| GB2458188A (en) * | 2008-03-13 | 2009-09-16 | Babaco Alarm Systems Inc | Vehicle cargo door alarm using driver proximity sensing |
| US7637556B2 (en) | 2007-01-29 | 2009-12-29 | Babaco Alarm Systems, Inc. | Truck security system |
| WO2010116201A1 (en) * | 2009-04-07 | 2010-10-14 | Techinvest Ltda | Electronic speedometer assembly in safety electronic system for vehicle start blockage in general and redundant relays for vehicle operation in case of electronic system failures |
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|---|---|---|---|---|
| GB1056062A (en) * | 1962-04-06 | 1967-01-25 | Robert William Homewood | Anti theft devices for vehicles |
| GB1061382A (en) * | 1962-08-24 | 1967-03-08 | Alarmatic Devices Ltd | Improvements in and relating to vehicle security systems |
| GB1110111A (en) * | 1964-03-20 | 1968-04-18 | Coach Fittings Dev Ltd | Locking of vehicle doors |
| US3707702A (en) * | 1970-12-14 | 1972-12-26 | Kem Krest Products Co | Antitheft device for vehicles |
| GB1377763A (en) * | 1972-08-04 | 1974-12-18 | Dwelsafe Alarms Ltd | Automobile burglar alarms |
| GB2014237A (en) * | 1978-02-09 | 1979-08-22 | Delfiore Centercar | Preventing Unauthorized Use of Vehicles |
| GB2045985A (en) * | 1979-04-05 | 1980-11-05 | Heeney J | Automobile Anti-theft Device |
| GB2187794A (en) * | 1986-03-10 | 1987-09-16 | Dennis Harold Norris | Device for immolising a vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60246966A (en) * | 1984-05-22 | 1985-12-06 | トヨタ自動車株式会社 | Theft detector of car |
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1987
- 1987-10-22 JP JP62267128A patent/JPH01109147A/en active Pending
-
1988
- 1988-10-19 GB GB8824423A patent/GB2211552A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1056062A (en) * | 1962-04-06 | 1967-01-25 | Robert William Homewood | Anti theft devices for vehicles |
| GB1061382A (en) * | 1962-08-24 | 1967-03-08 | Alarmatic Devices Ltd | Improvements in and relating to vehicle security systems |
| GB1110111A (en) * | 1964-03-20 | 1968-04-18 | Coach Fittings Dev Ltd | Locking of vehicle doors |
| US3707702A (en) * | 1970-12-14 | 1972-12-26 | Kem Krest Products Co | Antitheft device for vehicles |
| GB1377763A (en) * | 1972-08-04 | 1974-12-18 | Dwelsafe Alarms Ltd | Automobile burglar alarms |
| GB2014237A (en) * | 1978-02-09 | 1979-08-22 | Delfiore Centercar | Preventing Unauthorized Use of Vehicles |
| GB2045985A (en) * | 1979-04-05 | 1980-11-05 | Heeney J | Automobile Anti-theft Device |
| GB2187794A (en) * | 1986-03-10 | 1987-09-16 | Dennis Harold Norris | Device for immolising a vehicle |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2700308A1 (en) * | 1993-01-13 | 1994-07-13 | Bally Philippe | Global interactive safety device for all motorized vehicles. |
| WO1994015817A1 (en) * | 1993-01-13 | 1994-07-21 | Philippe Bally | Interactive universal security device for motor vehicles |
| FR2705073A1 (en) * | 1993-04-15 | 1994-11-18 | Deutsche Aerospace | Device for protecting passenger cars and commercial vehicles against theft using a coded key. |
| FR2721882A1 (en) * | 1994-07-04 | 1996-01-05 | Valeo Securite Habitacle | Key detector for vehicle anti-theft system |
| EP0822127A1 (en) * | 1996-07-31 | 1998-02-04 | Toyota Jidosha Kabushiki Kaisha | Vehicle theft prevention device |
| US5874890A (en) * | 1996-07-31 | 1999-02-23 | Toyota Jidosha Kabushiki Kaisha | Vehicle theft prevention device |
| WO1999007584A1 (en) * | 1997-08-07 | 1999-02-18 | The Regents Of The University Of California | Optical key system |
| WO2005007456A1 (en) * | 2003-07-16 | 2005-01-27 | Nissan Technical Centre Europe Ltd | Lockable vehicle storage in response of doors |
| US7637556B2 (en) | 2007-01-29 | 2009-12-29 | Babaco Alarm Systems, Inc. | Truck security system |
| GB2458188A (en) * | 2008-03-13 | 2009-09-16 | Babaco Alarm Systems Inc | Vehicle cargo door alarm using driver proximity sensing |
| WO2010116201A1 (en) * | 2009-04-07 | 2010-10-14 | Techinvest Ltda | Electronic speedometer assembly in safety electronic system for vehicle start blockage in general and redundant relays for vehicle operation in case of electronic system failures |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01109147A (en) | 1989-04-26 |
| GB8824423D0 (en) | 1988-11-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |