WO1996031852A1 - Dispositif antivol - Google Patents

Dispositif antivol Download PDF

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Publication number
WO1996031852A1
WO1996031852A1 PCT/EP1996/001493 EP9601493W WO9631852A1 WO 1996031852 A1 WO1996031852 A1 WO 1996031852A1 EP 9601493 W EP9601493 W EP 9601493W WO 9631852 A1 WO9631852 A1 WO 9631852A1
Authority
WO
WIPO (PCT)
Prior art keywords
holding part
goods
alarm
sensor element
holding
Prior art date
Application number
PCT/EP1996/001493
Other languages
German (de)
English (en)
Inventor
Reinhold Ott
Original Assignee
Reinhold Ott
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19512567A external-priority patent/DE19512567C1/de
Application filed by Reinhold Ott filed Critical Reinhold Ott
Priority to DE59607322T priority Critical patent/DE59607322D1/de
Priority to EP96913487A priority patent/EP0819290B1/fr
Priority to CA002217239A priority patent/CA2217239C/fr
Priority to DK96913487T priority patent/DK0819290T3/da
Priority to AT96913487T priority patent/ATE203348T1/de
Publication of WO1996031852A1 publication Critical patent/WO1996031852A1/fr
Priority to US08/943,892 priority patent/US5910768A/en
Priority to GR20010401742T priority patent/GR3036879T3/el

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
    • G08B13/1445—Mechanical actuation by lifting or attempted removal of hand-portable articles with detection of interference with a cable tethering an article, e.g. alarm activated by detecting detachment of article, breaking or stretching of cable
    • G08B13/1463—Physical arrangements, e.g. housings

Definitions

  • the present invention relates to devices for securing goods against theft, the devices comprising a first holding part for fastening to an object, a second holding part for fastening to the goods and a cable connecting the two. Furthermore, the invention relates to systems for theft protection of goods.
  • Such security devices are used above all in shops for radio and television sets, video equipment, telephone systems or the like, in which a large number of exhibition devices are ready for use and ready for test use for customers.
  • the goods are attached to an object, such as an exhibition shelf or a large, unwieldy device, with the devices mentioned.
  • the cable connecting the two holding parts allows the customer to use the secured device or the secured goods for test purposes.
  • the connection to the object prevents or at least makes the theft of the goods more difficult.
  • a device for mechanically securing a product against theft with the features mentioned at the outset is known, in which the two holding parts are connected to one another via a thin plastic cable.
  • the holding parts each have a fastening surface with an adhesive Layer on, by means of which they are attached to an object or to a product to be secured.
  • the holding parts On the side facing away from the fastening side, the holding parts have connecting parts which are formed on the one hand by a web with a dovetail-shaped cross section and on the other hand by a complementary groove which is open on one end face.
  • a disadvantage of the known securing device is that a secured article can be stolen relatively easily, for example by cutting through the cable connecting the holding parts or tearing off one of the holding parts glued onto an object or the article. Consequently, the anti-theft protection provided by the known device is not sufficient, especially for high-priced goods.
  • the invention has for its object to provide devices with the features mentioned above, as well as anti-theft systems, which permit theft-proofing of goods which is very easy to manufacture, extremely secure and universally applicable.
  • a highly effective securing of goods against theft can thus be achieved simply by holding one holding part on the goods to be secured and the other holding part on an object, such as a large piece of furniture, an exhibition shelf, an unwieldy device or other shop fittings. is attached. Accordingly, the goods can be secured at a virtually arbitrary location and an optimal presentation of the goods is no problem can be realized, in particular a test use and handling of the goods by customers within the scope of the movement mediated by the connecting cable.
  • the monitoring of the correct fastening of the holding parts to the goods or the object by means of the sensor elements and the monitoring means results in a particularly reliable detection of theft attempts and thus a theft protection which is significantly improved over the prior art.
  • the monitoring means comprise a connection to a central monitoring circuit or central unit, which is accommodated in a separate device.
  • the connection can be an electrical connection by means of a plug-in connection or an electrical cable, but also an optical or radio connection. It is only important for the connection that when a proper fastening of a holding part, monitored by the sensor element, is lifted on a product and / or an object, it can forward the fault signal of the sensor to the central unit, so that the latter is one Can trigger alarm.
  • each device comprises a connection via which a further device can be connected, so that the devices can be connected in series via the electrical connections or connecting cables , whereby only one of the devices can be connected and monitored directly with the central unit, the others via the interposition of one or more similar devices.
  • the monitoring means comprise a monitoring circuit which is arranged in a holding part and which can trigger the alarm when a correct attachment monitored by the sensor element is canceled.
  • the sensor element does not necessarily have to be arranged on / in the holding part itself. Rather, it can be provided that the sensor element is connected to the holding part via an electrical connection and can be fastened to the object or the goods in a spatially separated manner.
  • Such an "external” sensor element can of course also be used in addition to a sensor element integrated in the holding part.
  • each holding part comprises a sensor element for monitoring the correct fastening of the holding parts to the object or the goods
  • at least one Holding part is designed so that it can be connected to a central unit in such a way that an alarm can be triggered by monitoring means in the central unit when a proper fastening monitored by the sensor elements is removed.
  • the monitoring means are arranged only in one holding part or the central unit and are connected to the sensor element in the other holding part via the cable connecting the two holding parts.
  • the monitoring means which may be arranged in a holding part, use the two sensor elements to monitor both the fastening of the one holding part to an object and the fastening of the other holding part to the goods to be secured. As soon as one of the correct fastenings is released, an alarm is triggered by the monitoring means.
  • monitoring means in each holding part, which monitor the proper fastening of the holding part by means of the respective sensor element and which can trigger an alarm independently of one another in the event of manipulation.
  • the cable connecting the two holding parts in particular only creates a mechanical connection between them.
  • the cable can be screwed, glued or soldered to the holding parts.
  • the cable can be plugged into the holding parts.
  • This makes it very easy to device " to be configured as required by inserting a cable of suitable length into the holding parts, this being possible in particular at the user's site.
  • the pluggable design enables different holding parts, for example for attachment to certain goods or objects
  • the plug-in connection can be formed by standardized plugs and sockets, such as Western plugs and sockets or the like.
  • the monitoring means are advantageously designed such that an alarm can be triggered when a correct plug connection of the cable is released with a holding part.
  • a proper cable connection between them is monitored in that a disconnection of one of the plug connections of the cable and holding part leads to an alarm being triggered.
  • it can then be omitted to monitor it for a proper connection by means of a conductor loop extending over the entire cable.
  • the monitoring means are designed so that an alarm when the proper cable connection between the holding parts is released.
  • a closed circuit is formed, for example, from the monitoring means in one holding part over the cable to the sensor element in the other holding part and back again, which leads to an alarm being triggered in the event of an interruption.
  • the removal of the proper cable connection means in particular any manipulation, that is to say, for example, a short-circuiting of the circuit.
  • a holding part comprises a surface element for fastening to the object or the goods, proper fastening, which is done in particular by gluing, can easily be achieved.
  • Optimal adaptation to curved surfaces is made possible by the fact that the surface element is flexible. In this way, a very durable attachment of the holding part to the object or the goods to be secured can be achieved with any surface shape, as a result of which an unwanted loosening of the attachment and thus false alarms are avoided.
  • the surface element preferably comprises an adhesive layer for fastening the holding part to an object or a product.
  • the adhesive layer which is formed in particular by a double-sided adhesive tape, enables the holding part to be fastened very easily, no additional fastening means, such as adhesive, being required.
  • the holding part with its surface element is in particular designed so resilient that when the proper attachment is removed by pulling off the holding part from the goods or the object, destruction of the surface element even when the adhesive layer is torn or detached from the surface element is excluded. Thus, if a detached holding part or the device is reused, it may be necessary to renew the adhesive layer and, if appropriate, the associated sensor element.
  • a simple implementation of the device according to the invention is generally made possible in that a sensor element is designed in such a way that when the monitored, correct fastening is removed, a measured variable is changed and its change can be evaluated by the monitoring means as an alarm situation.
  • this is an electrical measured variable, the change of which is registered so that the alarm can be evaluated and, if necessary, triggered by an electronic circuit of the monitoring means.
  • the measured variable can also be formed, for example, by the pressure of a gas, the change of which can be transmitted between the holding parts via the then hollow cable.
  • a very sensitive embodiment variant is characterized in that the sensor element of the holding part comprises a strain gauge assigned to the flexible surface element. Even the smallest changes in shape of the flexible surface element can be detected in the event of manipulation of the correct fastening, as a result of which extraordinarily high security against manipulation can be achieved.
  • a very particularly preferred embodiment variant which is very simple and inexpensive to manufacture and is extremely reliable, results from the fact that the surface element comprises an adhesive layer for fastening the holding part to the object or the product, which adheres more strongly to the object or the product than to the surface element, and that the associated sensor element at least in sections between the surface element and the adhesive layer or in the latter is arranged so that when the proper fastening is removed, the sensor element is at least partially separated from the holding part with the adhesive layer, thereby interrupting a measuring loop formed by the sensor element.
  • the adhesive layer has predetermined breaking points. These can be formed, for example, by perforations or cuts in the adhesive layer. This ensures that the adhesive layer and thus also the sensor element is destroyed when the holding part is removed from the object or the secured goods and, consequently, an alarm is triggered by the monitoring means.
  • the sensor element preferably comprises an electrical, in particular metal foil-like conductor loop.
  • a conductor loop has the advantage that an interruption of the circuit formed by the conductor loop can be detected with very little effort.
  • a metal foil-like design of the conductor loop leads not only to inexpensive manufacture, but also to a particularly flat design of the sensor element.
  • this can also be formed by an evaporated metal layer or a very thin wire.
  • predetermined breaking points can be provided in the conductor loop in order to ensure that the conductor loop is interrupted as intended when the holding part is detached from the adhesive layer.
  • a further embodiment variant is characterized in that the surface element comprises an adhesive layer for fastening the holding part to the object or the product, which adheres more strongly to the object or product than to the surface element, and that the sensor element of this type is formed and arranged on the holding part that when the proper attachment is removed, the adhesive layer is at least partially separated from the holding part and this is detected by the sensor element.
  • a very inexpensive implementation results from the fact that the sensor element of a holding part comprises a microswitch.
  • the sensor element comprises a light-sensitive element, which can be formed, for example, by a phototransistor.
  • a light-sensitive element which can be formed, for example, by a phototransistor.
  • this element is covered either by the adhesive layer or by an adjacent surface of a product to be secured or an object to be secured.
  • ambient light falls on the light-sensitive element, so that a measurement variable provided by it changes and the change can be evaluated by the monitoring means as an alarm situation.
  • the light-sensitive element is arranged in the holding part in such a way that the optical axis of the element is aligned with that of the Fastening surface formed an acute angle of preferably less than 45 " closes.
  • the optical axis of the light-sensitive element intersects an essentially central area of the mounting surface. This counteracts the risk of an edge-side alignment of the optical axis that an adequate optical seal against ambient light is not achieved, depending on the surface condition of the goods to be secured, since the light-sensitive element essentially depends on the incidence of light in the area speaks to the center of the mounting surface.
  • a sensor element having at least one light-sensitive element can also comprise a light source, such as an infrared diode or LED, which is arranged in a recess of the holding part in such a way that the light emerges through the adhesive layer or a surface of the object to be secured or the goods to be secured can be covered in a light-tight manner.
  • a light source such as an infrared diode or LED
  • the light source and the light-sensitive element form a structural unit and are arranged in a recess in the holding part in such a way that, when the holding part is properly attached, light signals emitted by the light source on the light source can reflect the adhesive layer covering the recess and can be detected by the light-sensitive element.
  • the adhesive layer is removed from the contact surface element at least in the region of the recess, so that the detected light signal changes and an alarm situation is recognized.
  • a holding part with a sensor element can also be used individually as a monitoring sensor, which can be connected directly via a cable to a monitoring circuit in a central unit to form an anti-theft system.
  • the holding parts preferably comprise connecting means for producing a releasable holding connection between the holding parts.
  • the two holding parts can be connected to one another via a Velcro fastener, reusable adhesive tape, holding magnets or the like.
  • the holding parts have a defined relative position to one another, so that even in the case of a large number of secured goods, a uniform arrangement with the holding connection produced between the respectively belonging holding parts is made possible.
  • the connecting means are designed in such a way that a form-fitting holding connection can be produced between the holding parts, which is accordingly highly resilient. A very simple production of the holding connection and thus a very simple handling of the device are made possible in that the connecting means are designed in such a way that one holding part can be suspended in the other.
  • the monitoring means preferably comprise an energy store for energy supply.
  • This can be formed, for example, by an accumulator or a battery. This enables the device to be used independently of the mains, and the device can be used universally since no power supply lines are required. Alternatively or in addition, solar cells can also be used for energy supply.
  • At least one holding part preferably comprises an optical display for the operating state of the device.
  • the very small light emitting diodes are particularly suitable here.
  • the optical display is preferably operated in the function in which it permanently displays a manipulation of the fastening of the holding part to the goods or the object, ie until the alarm is cleared by authorized personnel. In the event of an alarm, this makes it easier for sales staff to locate the goods. chen 'in which a theft attempt was made. In any case, a proper fastening of the holding part can also be restored very quickly.
  • the optical display is operated in such a way that it emits an optical signal, such as a blinking signal, when the holding part is properly fastened, in order to draw the attention of theft to potential thieves and to deter theft from theft.
  • an optical signal such as a blinking signal
  • optical display can of course also be used to communicate other information, such as a properly manufactured attachment of the holding part, for example by the display lighting up briefly.
  • the monitoring means comprise an alarm unit for emitting an acoustic and / or optical alarm signal.
  • this unit comprises a piezo crystal.
  • a piezo crystal takes up a relatively small amount of space, so that a small structural size of the holding part can easily be achieved.
  • the piezo crystal can generate a very loud alarm signal, if necessary, which reliably detects an attempted theft.
  • the alarm unit can also comprise a small loudspeaker for generating an alarm signal.
  • a holding part of the device for securing goods can be connected to a monitoring circuit of an anti-theft system and / or further holding parts via a connecting cable.
  • the proposed device with a conventional anti-theft system or additional holding parts can be combined to secure additional goods.
  • Even if a cable connection is provided between the first holding part and the anti-theft system there is an improved possibility for the customer to inspect the secured goods compared to conventional solutions, since these are within the scope of which the two holding parts connecting cable allowed freedom of movement can move freely without the cable lying on the floor, for example, leading to the anti-theft system being raised, thus creating a considerable risk of accident.
  • the monitoring means comprise a transmitter for emitting a transmission signal that indicates an alarm situation.
  • the monitoring means are designed such that the transmission signal can be coded for the identification of the device.
  • the transmission signal can be coded for the identification of the device.
  • a system for the theft protection of goods is characterized by at least one device for securing goods with a transmitter for emitting a transmission signal indicating an alarm situation, and by a central unit which has a receiver for wireless transmission Receiving the transmission signal and for detecting an alarm situation and an alarm unit for emitting an acoustic and / or optical alarm signal.
  • the receiving unit can thus be set up centrally, for example in the vicinity of a cash register or the like.
  • the individual devices for securing goods are attached to the goods to be secured and corresponding objects, such as shelves, or to devices that are permanently connected to the premises. Because of the wireless signal transmission, cabling is not required, so that only a small amount of effort is required for the security of goods with central monitoring.
  • Each attempted theft is recognized by the monitoring means of the device concerned, and a transmission signal indicating an alarm situation is transmitted. This is received by the receiver of the central unit and evaluated as an alarm situation, so that an audible and / or visual alarm is given by means of the controllable alarm unit. In particular, the sales staff can be informed of the attempted theft and can prevent the theft.
  • the central arrangement of the alarm-indicating means permits a particularly powerful design of the alarm unit, the large number of goods security devices being able to be produced from very inexpensive and small-sized components with a low power requirement. This leads to low manufacturing costs for the entire anti-theft system.
  • these tel which can send out a codable transmission signal for identifying the device in the event of an alarm situation
  • the receiving unit of the anti-theft system comprises a decoder including a controllable display, so that the device which detects an alarm situation can be identified and displayed on the basis of its transmission signal.
  • the receiving unit and the devices for the goods security are designed such that the identification code of each device is sent by the device from the decoder when the device sends a coded transmission signal for the first time or as a test recognizable and storable for later identification in the event of an alarm situation.
  • Another anti-theft system is characterized by at least one of the above-mentioned devices for securing goods and a central unit which, as monitoring means, has at least one monitoring circuit to which the device or its monitoring or sensor means can be connected by means of a connecting cable and which can detect an alarm situation, and includes an alarm unit that can be controlled by the monitoring circuit for emitting an alarm signal.
  • FIG. 1 shows a schematic diagram of a first embodiment of an anti-theft device
  • Fig. 2 is a side view of a second
  • Embodiment of a goods security device with separate holding parts Embodiment of a goods security device with separate holding parts
  • FIG. 3 shows a sectional illustration of the device according to FIG. 2 with opposing holding parts
  • FIG. 4 shows a sectional illustration of a third embodiment of a holding part
  • FIG. 5 shows a view of the holding part according to FIG. 4 from below;
  • FIG. 6 shows a schematic illustration of a proposed anti-theft system with two anti-theft devices and a central unit
  • FIG. 7 shows a schematic representation of an alternative theft protection system with two anti-theft devices and a central unit
  • FIG. 8 shows a sectional illustration of a further embodiment of a holding part
  • FIG 9 shows a further embodiment of a device according to the invention.
  • the device according to the invention shown in the drawing for securing goods against theft is generally designated 10.
  • the device 10 has a first holding part 12 for fastening to an object 14, a second holding part 16 for fastening to a product 18 to be secured, and a cable 20 connecting the two holding parts 12 and 16.
  • the first holding part 12 is fastened to an object 14 in the form of a wall.
  • the second holding part 16 is fastened to a product 18 to be secured in the form of a radio by the second holding part 16 being glued to the underside thereof. Accordingly, the appearance of the goods 18 for customers is not affected.
  • the device 10 arranged in this way already represents a mechanical security of the goods 18 against theft.
  • the device 10 monitors the proper fastening of the holding parts 12 and 16 to the object 14 or the goods 18, which is described in the following described exemplary embodiments will be explained in more detail with reference to the other figures.
  • the holding parts 12 and 16 each comprise connecting means which are connected to one another. which can be brought into engagement, so that a firm, releasable holding connection between the holding parts 12 and 16 can be produced.
  • These connecting means will be discussed in more detail later.
  • the two holding parts 12 and 16 mechanically connected to one another via the flexible cable 20 each have essentially the shape of a flat cuboid, the first holding part 12 having a flat element 21 on one of its flat sides with a fastening surface 22, to which an adhesive layer 24 for attaching the holding part 12 to an object not shown in FIGS. 2 and 3 is applied.
  • the second holding part 16 also has on one flat side a surface element 21 with an adhesive layer 24, which is used to fasten the second holding part 16 to a product that is not to be secured.
  • Both adhesive layers 24 are formed by a double-sided adhesive tape and have an opening 26 in the area of their center.
  • a sensor element 28 for monitoring the correct fastening of the holding parts 12, 16 into the corresponding surface element 21 is inserted in the area of these openings 26.
  • the first holding part 12 has a microswitch 30 as the sensor element 28, the actuating part 32 of which extends through the opening 26 of the adhesive layer 24 and projects beyond the adhesive surface of the adhesive layer 24 facing an object, as can be seen in FIG. 3.
  • the first holding part 12 comprises monitoring means 34 which are in a corresponding recess in the first, which is closed, for example, with a cover Holding part 12 are arranged.
  • the monitoring means 34 are connected to the sensor element 28 of the first holding part 12 via electrical lines 36 and to the sensor element 28 of the second holding part 16 via electrical lines 38 which extend through the cable 20 into the second holding part 16.
  • the cable 20 serves not only for a mechanical but also an electrical connection of the two holding parts 12, 16 or their electrical components.
  • the sensor element 28 of the second holding part 16 is formed by a light-sensitive element 40, such as a photodiode or a phototransistor, which is inserted into the surface element 21 of the second holding part 16 such that the Breakthrough 26 of the adhesive layer 24 light passing through is detected by the photosensitive element 40.
  • a light-sensitive element 40 such as a photodiode or a phototransistor
  • the monitoring means 34 which in this exemplary embodiment are arranged only in one, namely in the first holding part 12, comprise an evaluation unit 42 which evaluates the electrical measured variables supplied by the sensor elements 28 in response to an alarm situation. Furthermore, the monitoring means 34 comprise an energy store 44 in the form of a battery or an accumulator for energy supply and an alarm unit 46 for emitting an acoustic alarm signal which can be controlled by the evaluation unit 42 and which comprises a piezo crystal which is arranged in the holding part 12 that, in the event of an alarm, it can emit an audible alarm signal that is clearly audible from the outside.
  • the use and function of the device 10 is described below. It should be noted that the 2 and 3 between a first holding part 12 and a second holding part 16 is different. This is due to the connecting means associated with the holding elements 12, 16, which will be explained in more detail later, for producing a holding connection.
  • the monitoring means 34 can of course be arranged either in one of the two holding parts 12 and 16 or in both.
  • the first holding part 12 is adhered by means of its adhesive layer 24 to a surface of an object, not shown, which is not at risk of theft, such as a large, unwieldy device, an exhibition shelf or the like.
  • the first holding part 12 is properly fastened to the object in that the actuating part 32 is pressed in by the object surface coming into contact with the adhesive layer 24 and the switching point of the microswitch 30 is exceeded.
  • the sensor element 28 of the first holding part 12 thus detects that the latter is properly fastened.
  • the switching state of the microswitch 30 is reflected in an electrical measured variable, by means of which the monitoring means 34 recognize an alarm situation.
  • the second holding part 16 is glued to a product to be secured (not shown in FIGS. 2 and 3) by means of the adhesive layer 24 in order to produce a proper fastening of the second holding part 16 to the product. Due to the surface of the goods coming into contact with the adhesive layer 24, the recess 26 of the adhesive layer 24 and thus the light-sensitive element 40 are covered in a light-tight manner or at least largely darkened.
  • the light-sensitive element 40 provides an electrical measured variable which is characteristic of this covered state and which is provided by the evaluation unit 42 the monitoring means 34 can be evaluated as a state of proper attachment of the second holding part 16 to the goods to be secured. Accordingly, the sensor element 28 of the second holding part 16 also provides an electrical measured variable which indicates that the second holding part 16 has been properly fastened.
  • the monitoring means 34 are armed. This can be done, for example, via a pushbutton (not shown) or a switch for switching on the energy supply by connecting the energy store 44 to the evaluation unit 42. It is preferably provided that the evaluation unit 42 is armed by an activation current flowing through one or both sensor elements 28, which is established when a proper fastening is produced.
  • the monitoring means 34 now monitor that the two holding parts 12 and 16 are properly fastened to the object or the goods, in that the evaluation unit 42 checks the electrical measured variables provided by the sensor elements 28 for the respective alarm criteria.
  • alarm criteria can be given, for example, by a specific change in the electrical resistance, a change in voltage or a change in current, and the alarm criteria can also be defined individually or uniformly depending on the sensor elements 28 used.
  • the Measured variable provided by sensor element 28 is a change which fulfills the alarm criteria.
  • the actuating part 32 of the microswitch 30 jumps out again over the contact surface formed by the adhesive layer 24, and the microswitch 30 changes its switching state and thus a measurement variable provided by it.
  • the embodiment of the sensor elements 28 shown in FIGS. 2 and 3 as a microswitch 30 and as a light-sensitive element 40 is to be understood merely as an illustration. Of course, these embodiments can each be used as sensor elements 28 in one or both of the holding parts 12, 16 or other detectors described later, as required.
  • a further essential property of the invention can be seen in the fact that the arrangement of the monitoring means 34 in one holding part 12 and their in particular electrical connection to a sensor element 28 in the other holding part via the cable 20 also for monitoring the cable connection between the holding parts 12, 16 leads.
  • the monitoring means 34 in one holding part 12 and their in particular electrical connection to a sensor element 28 in the other holding part via the cable 20 also for monitoring the cable connection between the holding parts 12, 16 leads.
  • the first holding part 12 has on its flat side facing away from the surface element 21 a first connecting part 50, which is formed in one piece with the holding part 12.
  • the connecting part 50 is plate-shaped and has essentially the same flat cuboid shape as the first holding part 12.
  • the first connecting part 50 has a recess 52, which essentially corresponds to the flat stump of a three-sided, irregular pyramid, the base of which faces the flat side of the first holding part 12.
  • the recess 52 is arranged on the side edge of the connecting part 50, specifically on an end face 54 which lies opposite the fastening point of the cable 20 on the first holding part 12.
  • the top surface of the truncated pyramid lies in the flat side of the first connecting part 50 facing away from the first holding part 12, so that the latter has the recess 52 delimited by two undercut sections 56, which form V-shaped run-up surfaces 58 which run inclined to one another and incline to the flat side.
  • the second holding part 16 has on its flat side opposite the flat element 21 a second connecting part 60 which is integrally connected to it and which is designed as a flat stump of an irregular three-sided pyramid which is connected on its top surface to the flat side of the second holding part 16 .
  • the second connecting part 60 is essentially complementary to the first connecting part 50, thus corresponds approximately to the shape of the recess 52.
  • the second connecting part 60 on the second holding part 16 is arranged corresponding to the recess 52 on the first holding part 12, which The projecting second connecting part 60 thus extends starting from an end face 62 of the second holding part 16, which lies opposite a fastening point of the cable 20 on the holding part 16, with side surfaces tapering toward one another toward the center of the flat side of the second holding part 16 .
  • These side surfaces represent undercut sections 64 which form run-up surfaces 66 inclined to the flat side of the second holding part 16 and thus also to the surface element 21 thereof.
  • the holding parts 12 and 16 with their connecting parts 50 and 60 are injection-molded in one piece from plastic, so that the device 10 can be easily manufactured.
  • the first holding part 12 is applied by means of its adhesive layer 24 to a surface which is oblique to the horizontal or to a vertical surface of an object for fastening the first holding part 12 to the object.
  • the first holding part 12 is aligned so that the recess 52 is at the top and the end face 54 of the first holding part 12 assigned to the recess 52 extends essentially horizontally.
  • the second holding part 16 is connected by means of an adhesive layer 24 to a product to be secured, not shown.
  • the second holding part 16 is hooked with its second connecting part 60 into the recess 52 formed by the first connecting part 50.
  • the second holding part 16 is moved with its second connecting part 60 ahead and approximately parallel to the first holding part 12 flat sides to the first connecting part 50 until the second connecting part 60 with its head surface 68 facing away from the second holding part 16 onto the first holding part 12 in the region the recess 52 hits.
  • This relative movement between the two holding parts 12 and 16 takes place essentially perpendicular to the two surface elements 21 of the holding parts 12 and 16 held approximately parallel to one another in the direction of the arrow 70.
  • the second holding part 16 then slides down with its second connecting part 60 on the first holding part 12 essentially parallel to the surface elements 21 in the direction of the arrow 72, the undercut sections 56 and 64, which converge in each case, act as insertion bevels and facilitate the establishment of a grip between them. Finally, the undercut sections 56 and 64 of the holding parts 12 and 16 come to rest against one another, and an undercut between the two connecting parts 50 and 60 over the entire longitudinal extent of the undercut sections 56 and 64 is produced.
  • the resulting positive locking connection of the two holding parts 12 and 16 is very resilient, so that the goods arranged on the second holding part 16 are held securely by the object carrying the first holding part 12.
  • the defined relative position of the two holding parts 12 and 16 with respect to one another in the case of a holding connection that has been made supports an appealing presentation of the secured goods, since this is intuitively put down again by the customer after inspection and inspection by making the holding connection.
  • the second holding part 16 can be moved upward from the first holding part 12 in the opposite direction to the arrow 72 or, due to the inclination of the undercut sections 56 and 64, can be moved obliquely upwards in the direction of arrow 74 away from the first holding part 12.
  • the ramp surfaces 58, 66 determine by their inclination with respect to the surface element 21 of the first holding part 12 and by their angular position to each other the inclination of the obliquely upward release movement 74, under which the ramp surfaces 58, 66 can slide from each other when releasing the holding connection.
  • the holding connection can be produced and released by a relative movement of the two holding parts 12 and 16 relative to one another within a direction which lies in an angular range a which is on the one hand from the releasing movement in the direction of arrow 74 and against the hanging direction 72 ongoing movement is limited on the other hand. Accordingly, it is very easy to establish or release the holding connection, since no precisely defined direction of movement has to be observed, but rather the aforementioned angular range ⁇ is available for the relative movement.
  • the inclined run-up surfaces 58, 66 enable the holding connection to be released by a release force acting perpendicularly to the fastening surface 22 of the first holding part 12 and away from it and acting on the second holding part 16.
  • the inclination results in a force component running in the direction 74, which leads to a corresponding release movement of the second holding part 16 with respect to the first 12.
  • the secured goods can be received by customers by means of a force directed against the arrow 70, that is to say a force directed away from the object, while removing the holding connection of the two holding parts 12, 16.
  • FIGS. 4 and 5 A further embodiment variant of a holding part, which is designated by 80, is described below with reference to FIGS. 4 and 5.
  • the holding part 80 shown comprises a flexible housing 82 made of a rubber-elastic material.
  • the housing 82 has an integrated surface element 84 with a flexible, smooth fastening surface 86, which forms a flat side of the housing 82.
  • the housing 82 is essentially designed as a flat cuboid with rounded edges.
  • the fastening surface 86 corresponds to a base area of the cuboid.
  • the housing 82 can also have the shape of a flat section of a circular cylinder or an elliptical cylinder or some other shape. It is important that a flexible surface element 84 is formed.
  • a rigid connection part 88 is cast into the housing 82, to which the cable 20 is connected for connection to another holding part, not shown.
  • the connecting part 88 serves on the one hand a fixed mechanical connection of the cable 20 with the holding part 80 as strain relief and on the other hand an electrical connection of the sensor element 28 arranged on the holding part 80 via electrical lines 38. Since the connecting part 88 is fully encased by the housing 82, the illustrated embodiment, the cable 20 is also partially cast into the housing 82 and thus mechanically connected to it. As an alternative, however, the cable 20 can also be plugged into the housing 82 and the connecting part 88.
  • the connecting part 88 is very flat and runs with its main plane of extension essentially parallel to the fastening surface 86.
  • the connecting part 88 has two contact points 90 in the form of contact pins on, 'which each extend through the surface element 84 to the fastening surface 86 and are possibly raised somewhat beyond the fastening surface 86.
  • the contact points 90 serve for an electrical connection of the sensor element 28 arranged on the fastening surface 86.
  • the sensor element 28 lies flat on the fastening surface 86.
  • the sensor element 28 is formed by a conductor loop 92 lying on the fastening surface 86, which here is made of a metal foil strip made of aluminum, which is spaced and approximately parallel to the edge of the fastening surface 86 of the surface element 84 is arranged.
  • the conductor loop 92 essentially forms an open U and covers one of the contact points 90 of the connecting part 88 with the free leg ends.
  • the contact points 90 are preferably slightly raised relative to the fastening surface 86. Furthermore, the surfaces of the contact points 90 are preferably coated with gold in order to ensure a low transition resistance to the conductor loop 92.
  • the conductor loop 92 is formed by a correspondingly vapor-deposited metal sheet, for example made of silver, which can also be vapor-deposited on the contact points 90 for electrical contacting.
  • FIG. ⁇ 4 it can be seen that the sensor element 28 of the holding member 80 layer on the mounting surface 86 with a Haft ⁇ is completely covered 96th This adheres both to the fastening surface 86 and to the sensor element 28.
  • the illustration of this adhesive layer has been omitted for reasons of illustration.
  • the adhesive layer 96 is formed by a double-sided adhesive tape which is covered on its adhesive surface 94 facing away from the surface element 84 by a protective film (not shown) until it is fastened to a surface of an object or goods to be secured.
  • the conductor loop 92 is applied to the side of the adhesive layer 96 facing the fastening surface 86 before the adhesive layer 96 is attached to the surface element 84, in order to ensure a good adhesive connection between the conductor loop 92 and the adhesive layer 96.
  • the contact points 90 can also be resilient.
  • the sensor element 28 is arranged between the adhesive layer 96 and the holding part 80 or the surface element 84 formed by it.
  • the cable 20 leads a line 38 to the contact points 90.
  • a closed circuit is formed by the conductor loop 92 via the contact points 90, the connecting lines 38 and the cable 20, which the monitoring means 34, not shown here, monitor.
  • the monitoring means 34 for monitoring a proper fastening of the holding part 80 are arranged in another holding part connected to the holding part 80 via the cable 20.
  • this holding part can then be designed in accordance with the embodiment shown in FIGS. 4 and 5 or also in accordance with an embodiment shown in FIGS. 2 and 3.
  • the required monitoring means can also be encompassed by the holding part 80 and arranged in its housing 82, in particular in the connecting part 88.
  • the housing 82 is so flat that it is identical to the surface element 84.
  • the electrical connection of the sensor element 28 can then follow that the cable 20 is glued between the surface element 84 and the adhesive layer 96 or alone in the latter and connected to the sensor element 28.
  • An extremely small thickness of the holding part 80 of only a few millimeters can thus be achieved.
  • the holding part 80 is glued to a surface of the object or product with the aid of the adhesive surface 94 of the adhesive layer 96 which is free of the protective film (not shown). Due to the flexible design of both the sensor element 28 and the surface element 84 including the housing 82, the holding part 80 can be adapted to any curved or curved surface.
  • the holding part 80 is glued over the entire surface for the purpose of producing a proper fastening with the adhesive surface 94, which is preferably formed by an underside of the goods or the object, so that the result appearance of the object or the goods is minimally impaired.
  • the device 10 After arming the monitoring means 34, not shown in FIGS. 4 and 5, but shown in FIGS. 2 and 3, the device 10 according to the invention protects the goods provided with a holding part against theft.
  • the adhesive layer 96 with the sensor element 28 or the conductor loop 92 remains stuck to the goods or the object. At most, it is possible to pull off the surface element 84 from the adhesive layer 96.
  • the adhesive layer 96 has a higher adhesive or adhesive force on the adhesive surface 94 than compared to the surface element 84. Accordingly, when the holding part 80 is removed from the goods or the object, the measuring loop formed by the sensor element 28, here the electrical conductor loop 92, is interrupted. If necessary, the conductor loop 92 and / or the adhesive layer 96 can additionally have predetermined breaking points, such as tapering, perforations or incisions, for the defined interruption.
  • This intended destruction of the sensor element 28 in the event of manipulation represents a very essential property of this embodiment, which ensures a particularly reliable detection of an attempted theft.
  • the interruption leads to a significant change in the measured variable provided by the measuring loop, which is recognized by the evaluation unit 42 as an alarm situation.
  • the evaluation unit 42 outputs an alarm-triggering signal to the alarm unit 46, which accordingly sounds an alarm signal.
  • the flexible holding part 80 can also be equipped with other types of sensor elements 28, such as a microswitch 30 or a light-sensitive element 40.
  • FIG. 6 shows a proposed anti-theft system. This comprises at least one, modified device 10 according to the proposal for securing goods against theft and a central unit 100.
  • modified device 10 according to the proposal for securing goods against theft
  • central unit 100 a central unit 100.
  • two devices 10 are shown, each of which comprises two holding parts 12 and 16 connected via a cable 20 .
  • the holding part 12 of the device 10 shown above in FIG. 6 is attached to an object 14 in the form of a table.
  • the other holding part 16 is designed as a computer plug sensor which is plugged onto a standard connection of a personal computer as goods 18 to be secured.
  • the one holding part 12 is fastened to a television, which forms an object 14 for securing goods.
  • the other holding part 16 is glued to the back of a remote control forming the goods 18 to be secured.
  • Each of the holding parts 12, 16 comprises a sensor element 28 (not shown) for monitoring a correct External attachment to the respective goods 18 or the respective object 14.
  • the measured variables provided by these sensor elements 28 are monitored for the occurrence of an alarm situation with the aid of monitoring means 34, not shown, which are arranged in the holding parts 12 in the illustrated example .
  • the monitoring means 34 comprise a transmitter, not shown, which can be controlled by the evaluation unit 42 in such a way that it is triggered when an alarm situation occurs can transmit a wireless transmission signal 110 indicated in FIG. 6, which is received by the central unit 100.
  • Each transmitter of the monitoring means 34 is designed in such a way that the transmission is possible without problems even over greater distances.
  • the transmission can take place by means of ultrasound, infrared or radio signals, a radio signal having the advantage that neither visual contact between the transmitter and receiver nor a special alignment of the transmitter and receiver with respect to one another are required.
  • the transmitters of the monitoring means 34 are each designed in such a way that, in the event of an alarm situation, they send out transmit signals 110 which contain an identification code for uniquely identifying the device 10 emitting the signal.
  • the central unit 100 comprises a receiver 102, a decoder 104, a display device 106 and an alarm unit 108 for emitting an alarm signal.
  • the receiver 102 is set up to receive the sensor design 110 sent by a device 10 in the event of an alarm situation.
  • the decoder 104 decodes the identification code of the respective device 10 contained in the received transmission signal 110 and controls the display device 106 so that the device 10 concerned is displayed in the event of an alarm situation.
  • the display device 106 has a series of light-emitting diodes, each of which corresponds to a specific device 10. In the event of an alarm situation, the light-emitting diode lights up, which corresponds to the device emitting a signal 110. Thus, in the event of an alarm, the display device 106 immediately shows which device 10 has detected an alarm situation.
  • the alarm unit 108 can either be controlled by the decoder 104 or alternatively directly by the receiver 102 and generates an acoustic and / or optical alarm signal in the event of an alarm situation.
  • the alarm unit 108 can comprise, for example, a siren or a flash lamp.
  • the described anti-theft system according to the invention can comprise a virtually unlimited number of devices 10 for securing individual goods against theft. Since no cable connection between the devices 10 and the central unit 100 is required, the anti-theft system can be used universally and in particular also for large shops. In addition, the goods security devices 10 can be optimally adapted to the goods to be secured by selecting appropriate holding parts and sensor elements. In order to establish a unique identification when the anti-theft system is put into operation, the devices 10 are designed so that they can test-transmit a transmission signal 110 with a coded identification code. When an identification code first appears on the encoder 104, it is stored and assigned to a predefinable or the next free display location of the display device 106. In addition, the alarm unit 108 can be switched off in a test mode of the central unit 100. By test-emitting the transmission signal 110 from the devices 10, it can then be determined which display location of the display device 106 corresponds to which goods security device 10.
  • FIG. 7 shows an anti-theft system in which the devices 10 for securing goods are modified in such a way that in each case the first stopper 112 is connected to a monitoring circuit 114 in the control center 116 via a connecting cable 112 can be connected.
  • the connecting cable 112 is equipped with corresponding plug elements, so that electrical plug connections can be produced both to the first holding part 12 and to the monitoring circuits 114 in the control center 116.
  • each monitoring circuit 114 evaluate signals provided by the respective monitoring means 34 of the enclosed devices 10 for the detection of an alarm situation, or the monitoring circuits 114 take over the function of the monitoring means 34, so that these can be omitted in the devices 10. In the event of an alarm situation, each monitoring circuit 114 triggers an alarm independently of the others by activating the alarm unit 108.
  • the monitoring circuits 114 can each comprise an activation circuit which enables the connection of a device 10 without triggering an alarm, but which triggers an alarm when the connection to the respective device 10 is disconnected.
  • the anti-theft system according to FIG. 7 corresponds to that shown in FIG. 6, so that full reference is made to the description there.
  • further holding parts 12, 16 or 80 can be connected to each and in particular to the first holding part 12 via cables 20, so that a type of local distributor is formed, the first holding part 12 can each establish a connection to the control center 100 or 116 when forming a proposed anti-theft system.
  • a further embodiment of a holding part 120 is described below with reference to FIG. 8. It comprises a housing 122, which may be made of a rubber-elastic material and can therefore be flexible.
  • the housing 122 has an integrated surface element 124 with a flexible, smooth fastening surface 126, which forms a flat side of the housing 122.
  • an adhesive layer 128 is glued on, which serves for a self-adhesive fastening of the holding part 120 on the surface of a product to be secured or an object to be secured.
  • the holding part 120 is connected via the cable 20 to another holding part, not shown. If necessary, the holding part 120 can also have connection options for further holding parts.
  • the sensor element 28 comprises a photosensitive element 40 arranged in a recess 130 of the holding part 120.
  • the recess 130 extends obliquely from the fastening surface 126 into the interior of the surface element 124 or the housing 122 in such a way that the optical axis 132 of the photosensitive element 40, that is to say its main detection direction, forms an acute angle ⁇ with the fastening surface 126, which is in particular less than 45 °.
  • the recess 130 is aligned such that the axis 132, starting from the photosensitive element 40, extends essentially towards the center of the fastening surface 126 or intersects a central region 142 of the fastening surface 126.
  • This alignment of the light-sensitive element 40 leads to an improved response to light striking the fastening surface 126 obliquely, as occurs in manipulation attempts when the properly fastened holding part 120 is first detached laterally and ambient light falls on the fastening surface 126 laterally.
  • the response behavior of the sensor element 28 can be further improved by using a plurality of light-sensitive elements 40 and aligning them with their optical axes 132 in different directions, for example in a star shape with respect to the fastening surface as the projection plane.
  • the adhesive layer for opening of the recess 130 corresponding openings so that a light tight cover of the union element is lichtempfind ⁇ 40 through the surface of goods or of the object in the properly mounted state of the holding part 120th
  • the adhesive layer 128 is continuous, so that an alarm situation is detected when the adhesive layer 128 is detached from the fastening surface 126 and thereby ambient light, possibly with reflection on the side of the adhesive layer 128 facing the fastening surface 126, can hit the photosensitive member 40.
  • the sensor element 28 additionally has a light source 136 which, for example, is formed by a light-emitting diode, in particular pulsed to save electricity can, comprises and is arranged in a recess 138 corresponding to the recess 130 and axially symmetrical to a surface normal 134 of the fastening surface 126 in the surface element 124 or in the housing 122 of the holding part 120.
  • a light source 136 which, for example, is formed by a light-emitting diode, in particular pulsed to save electricity can, comprises and is arranged in a recess 138 corresponding to the recess 130 and axially symmetrical to a surface normal 134 of the fastening surface 126 in the surface element 124 or in the housing 122 of the holding part 120.
  • the light source 136 is connected via cable connections only indicated by dashed lines and the cable 20 to the monitoring means 34 (not shown) or directly to the monitoring circuit 114 on the one hand for the power supply and on the other hand for the derivation of a detection signal.
  • the recess 138 is designed and the light source 136 is aligned such that its main emission direction 140 in the exemplary embodiment according to FIG. 8 is essentially axisymmetric with respect to the axis 132 with respect to the surface normals 134.
  • the additionally provided light source 136 ensures independence from ambient light in the detection of manipulation attempts, since the light source 136 in the properly fastened state of the holding part 1 0 either through a surface of the goods or the object in the exemplary embodiment or alternatively through the adhesive layer 128 is covered in a light-tight manner.
  • the described variant of the holding part 120 permits particularly sensitive detection of manipulation attempts, so that an extremely high level of security against theft can be achieved.
  • the holding part 120 or the other embodiment variants described individually as a monitoring sensor, with each sensor being connected directly to an anti-theft system via a connecting cable 112 and being fastened with its fastening surface 126 to a product to be secured.
  • FIG. 9 shows a further embodiment of a device 150 according to the invention, in which a first holding part 152 is attached to a television set 154 (object) and a second holding part 156 is attached to an associated remote control (product) 158.
  • the proper state of the attachment of the second holding part 156 to the remote control 158 is determined by a sensor element (not shown), which is designed as a microswitch and is arranged in the holding part 156 and which, in the event that the proper state of the fastening is removed, indicates an alarm state.
  • the alarm state indicated by the sensor element is conveyed via an electrical connecting cable 160 between the first and second holding parts 152 and 156.
  • An electrical connecting cable 162 leads from the first holding part 152 to a central unit (not shown) with a monitoring circuit which triggers an alarm when the alarm state signal is transmitted from the sensor element.
  • a central unit not shown
  • the device according to the invention has a connection, for example a plug socket, to the object to be fastened is provided, to which an electrical connecting cable 162 of an adjacent inventive device of the same type used can be connected.
  • a large number of devices 150 according to the invention can thus be connected in series, a first device 150 being connected in series to the central unit and reporting the alarm status of each of the devices / holding part sensor element connected in series to the central unit. This allows a particularly simple and clear cabling when using a large number of devices according to the invention with a single central unit.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Air Bags (AREA)
  • Glass Compositions (AREA)
  • Lubricants (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

L'invention concerne un dispositif permettant de protéger des articles contre le vol, ledit dispositif étant facile à fabriquer, extrêmement sûr et utilisable de façon universelle. Ce dispositif comprend un premier élément de maintien destiné à être fixé à un objet, un second élément de maintien destiné à être fixé à l'article, ainsi qu'un câble reliant les deux éléments de maintien. Au moins un des deux éléments de maintien comprend un élément détecteur servant à surveiller si cet élément de maintien est fixé correctement à l'objet ou à l'article, et au moins un élément de maintien comprend des organes de contrôle qui sont reliés à l'élément détecteur et conçus de sorte qu'une alarme se déclenche dès qu'une fixation surveillée par l'élément détecteur est faite.
PCT/EP1996/001493 1995-04-04 1996-04-04 Dispositif antivol WO1996031852A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE59607322T DE59607322D1 (de) 1995-04-04 1996-04-04 Diebstahlsicherungsvorrichtung
EP96913487A EP0819290B1 (fr) 1995-04-04 1996-04-04 Dispositif antivol
CA002217239A CA2217239C (fr) 1995-04-04 1996-04-04 Dispositif antivol
DK96913487T DK0819290T3 (da) 1995-04-04 1996-04-04 Tyverisikringsanordning
AT96913487T ATE203348T1 (de) 1995-04-04 1996-04-04 Diebstahlsicherungsvorrichtung
US08/943,892 US5910768A (en) 1995-04-04 1997-10-03 Anti-theft device
GR20010401742T GR3036879T3 (en) 1995-04-04 2001-10-11 Anti-theft device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19512567A DE19512567C1 (de) 1995-04-04 1995-04-04 Diebstahlsicherungsvorrichtung
DE19512567.3 1995-04-04
DE29602412U DE29602412U1 (de) 1995-04-04 1996-02-12 Diebstahlsicherungsvorrichtung
DE29602412.0 1996-02-12

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US08/943,892 Continuation US5910768A (en) 1995-04-04 1997-10-03 Anti-theft device

Publications (1)

Publication Number Publication Date
WO1996031852A1 true WO1996031852A1 (fr) 1996-10-10

Family

ID=26014103

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/001493 WO1996031852A1 (fr) 1995-04-04 1996-04-04 Dispositif antivol

Country Status (8)

Country Link
EP (1) EP0819290B1 (fr)
AT (1) ATE203348T1 (fr)
CA (1) CA2217239C (fr)
DK (1) DK0819290T3 (fr)
ES (1) ES2161358T3 (fr)
GR (1) GR3036879T3 (fr)
PT (1) PT819290E (fr)
WO (1) WO1996031852A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19951019A1 (de) * 1999-10-22 2001-06-07 Reinhold Ott Vorrichtung zur Sicherung einer Ware gegen Diebstahl
US6278365B1 (en) 1995-05-16 2001-08-21 Protex International Corp. Security system with intermittent alarm location detection
US6380855B1 (en) 1999-10-22 2002-04-30 Reinhold Ott Apparatus for safeguarding a merchandise item against theft

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932857A (en) * 1971-07-06 1976-01-13 Salient Electronics, Inc. Alarm system sensing device
US4654640A (en) * 1985-12-03 1987-03-31 United Technologies Corporation Digital PBX integrated workstation security system
EP0260330A1 (fr) * 1986-09-13 1988-03-23 Tele-Security-Foto Überwachungsanlagen GmbH Protection antivol pour objets
US4855713A (en) * 1988-10-07 1989-08-08 Interactive Technologies, Inc. Learn mode transmitter
US4945341A (en) * 1989-04-05 1990-07-31 Buttimer Gregory J Alarm system for electrical devices

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932857A (en) * 1971-07-06 1976-01-13 Salient Electronics, Inc. Alarm system sensing device
US4654640A (en) * 1985-12-03 1987-03-31 United Technologies Corporation Digital PBX integrated workstation security system
EP0260330A1 (fr) * 1986-09-13 1988-03-23 Tele-Security-Foto Überwachungsanlagen GmbH Protection antivol pour objets
US4855713A (en) * 1988-10-07 1989-08-08 Interactive Technologies, Inc. Learn mode transmitter
US4945341A (en) * 1989-04-05 1990-07-31 Buttimer Gregory J Alarm system for electrical devices

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6278365B1 (en) 1995-05-16 2001-08-21 Protex International Corp. Security system with intermittent alarm location detection
DE19951019A1 (de) * 1999-10-22 2001-06-07 Reinhold Ott Vorrichtung zur Sicherung einer Ware gegen Diebstahl
US6380855B1 (en) 1999-10-22 2002-04-30 Reinhold Ott Apparatus for safeguarding a merchandise item against theft
EP1093744A3 (fr) * 1999-10-22 2003-07-09 Reinhold Ott Dispositif pour protéger un article contre le vol
DE19951019B4 (de) * 1999-10-22 2007-02-01 Ott, Reinhold, Waterloo Vorrichtung zur Sicherung einer Ware gegen Diebstahl

Also Published As

Publication number Publication date
PT819290E (pt) 2001-10-31
GR3036879T3 (en) 2002-01-31
ATE203348T1 (de) 2001-08-15
CA2217239C (fr) 2004-09-14
EP0819290B1 (fr) 2001-07-18
CA2217239A1 (fr) 1996-10-10
EP0819290A1 (fr) 1998-01-21
ES2161358T3 (es) 2001-12-01
DK0819290T3 (da) 2001-09-24

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