[go: up one dir, main page]

EP0908859A1 - Anti-intrusion wall and its use in nfrared barriers - Google Patents

Anti-intrusion wall and its use in nfrared barriers Download PDF

Info

Publication number
EP0908859A1
EP0908859A1 EP98203408A EP98203408A EP0908859A1 EP 0908859 A1 EP0908859 A1 EP 0908859A1 EP 98203408 A EP98203408 A EP 98203408A EP 98203408 A EP98203408 A EP 98203408A EP 0908859 A1 EP0908859 A1 EP 0908859A1
Authority
EP
European Patent Office
Prior art keywords
vertical
elements
perimeter
ground
barrier according
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Withdrawn
Application number
EP98203408A
Other languages
German (de)
French (fr)
Inventor
Yves Monneret
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SORHEA
Original Assignee
SORHEA
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
Application filed by SORHEA filed Critical SORHEA
Publication of EP0908859A1 publication Critical patent/EP0908859A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
    • G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier

Definitions

  • the present invention relates to the field of protection against the intrusion of a perimeter by a barrier of infrared beams.
  • Such barriers are well known in themselves. They consist of vertical elements or IR 20 columns arranged around of the perimeter and containing the emitters and IR beams regularly spaced vertically, which the receivers face r of the next column of the perimeter.
  • Transmitters and receivers are arranged so that an intruder cannot cross the border perimeter without "cutting" at least one beam. For the receiver corresponding, the beam is obscured, and this occultation triggers an alarm.
  • This last lower beam is necessarily placed very close from the ground, about 20 cm, to avoid crossing by crawling. This short distance makes untimely disturbances of the bundle by small animals, such as cats, rabbits or the like. In indeed these animals are big enough to set off an alarm even on sophisticated installations.
  • a vertical obstacle at ground level so as to substantially replace the lower beam.
  • This obstacle is arranged from the ground to a height below the second initial beam; its function is to oppose the crossing by crawling, and must also be high enough to deter small animals to cross it from above.
  • An appropriate height is is around 40 cm.
  • the barrier generally consists of columns 20 verticals with IR emitters on their sides and IR r receptors, in a known manner, as well as service 21.
  • the whole delimits a section protective beam substantially represented at 22.
  • Each element 1 consists of an element vertical 3 and a base 2. Openings 4 are provided in the vertical elements 3 to allow the free passage of small animals. It has been established that an opening of the order of 10 to 15 cm allows animals to circulate without being tempted by a crossing by the above. On the top of the vertical element 3, a harrow 5 or a set of tips designed to prevent birds from landing on the system. These tips can also be oriented according to several directions for better efficiency.
  • the beam immediately upper 7 is naturally close enough to prevent any crawling.
  • the elements are preferably assembled using spacers 8, advantageously made of stainless steel.
  • the spacers 8 are extended in the mass of the elements, and at least at the level of the vertical obstacles, but preferably both in the vertical elements and in the base, by plastic sheaths 9 for the passage of cables 6. It will be especially the power cables for the columns. This represents another important advantage of the invention because the cables are both invisible and protected, and you can do without sleeves etc ... annexes.
  • These passages 8, 9 will also be used to form tamper ports, i.e. triggering an alarm in the event of deterioration (for example during an attempted deterioration of the low wall).
  • the invention is not limited to the example given above.
  • the invention on the contrary, also covers all the embodiments, various adaptations and variants which will be directly accessible at a person skilled in the art on reading the general principle and the example above.
  • the low wall can be replaced by a grid or grid or similar, with openings 4.
  • the harrow can be replaced by any system designed to dissuade birds from landing on the top of the wall or grid or grating or the like, as for example an electrified wire.
  • You can also use on the top of the wall a double electrified wire, arranged so that the bird or other animal establishes contact by landing or resting on the wall, which triggers the electric shock.
  • the openings 4 they can be placed on the ground and / or close to the ground.
  • the invention applies to any type of anti-intrusion barrier for which poses the same problem.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Catching Or Destruction (AREA)

Abstract

A low wall is placed on the ground beneath the infrared barrier, replacing the lowest beam, having openings (4) at or near ground level, and having spikes (5) or an electrified wire along its top edge. The wall is composed of prefabricated modules, joined by connectors (8) inserted into plastic sheaths (9) which extend into the modules and house the supply cables (6). An Independent claim is included for the modules making up the wall.

Description

La présente invention concerne le domaine de la protection contre l'intrusion d'un périmètre par une barrière de faisceaux infrarouges.The present invention relates to the field of protection against the intrusion of a perimeter by a barrier of infrared beams.

De telles barrières sont bien connues en elles mêmes. Elles se composent d'éléments verticaux ou colonnes IR 20 disposées autour du périmètre et contenant les émetteurs e de faisceaux IR régulièrement espacés verticalement, auxquels font face les récepteurs r de la colonne suivante du périmètre.Such barriers are well known in themselves. They consist of vertical elements or IR 20 columns arranged around of the perimeter and containing the emitters and IR beams regularly spaced vertically, which the receivers face r of the next column of the perimeter.

Les émetteurs et les récepteurs, ainsi que les colonnes, sont disposés de telle manière qu'un intrus ne puisse franchir la limite du périmètre sans "couper" au moins un faisceau. Pour le récepteur correspondant, le faisceau est occulté, et cette occultation déclenche une alarme.Transmitters and receivers, as well as columns, are arranged so that an intruder cannot cross the border perimeter without "cutting" at least one beam. For the receiver corresponding, the beam is obscured, and this occultation triggers an alarm.

Il existe naturellement des systèmes connus, plus ou moins sophistiqués, permettant d'éviter au maximum les alarmes intempestives résultant du passage des petits animaux, par exemple. Cependant, ces systèmes atteignent rapidement leurs limites dans certaines configurations, en termes de coût ou de complexité notamment. C'est le cas en particulier en ce qui concerne la coupure possible du dernier faisceau inférieur.There are naturally known systems, more or less sophisticated, making it possible to avoid nuisance alarms as much as possible resulting from the passage of small animals, for example. However, these systems quickly reach their limits in some configurations, particularly in terms of cost or complexity. It's the case in particular with regard to the possible breaking of the last lower beam.

Ce dernier faisceau inférieur est nécessairement placé très près du sol, à environ 20 cm, pour éviter un franchissement par reptation. Cette faible distance rend inévitables les perturbations intempestives du faisceau par de petits animaux, tels que chats, lapins ou analogues. En effet ces animaux sont suffisamment gros pour déclencher une alarme même sur les installations sophistiquées.This last lower beam is necessarily placed very close from the ground, about 20 cm, to avoid crossing by crawling. This short distance makes untimely disturbances of the bundle by small animals, such as cats, rabbits or the like. In indeed these animals are big enough to set off an alarm even on sophisticated installations.

Par ailleurs, la végétation au sol risque de perturber également ce faisceau bas. La solution évidente, qui consiste à traiter ou nettoyer le sol de part et d'autre de la barrière, ne peut être mise en oeuvre facilement, en raison de son coût et des servitudes qu'elle impose, dont celle de neutraliser la barrière durant l'opération, ce qui est délicat s'agissant de sites sensibles tels que installations militaires, industrielles, etc...In addition, the vegetation on the ground may also disturb this low beam. The obvious solution, which is to treat or clean the ground on both sides of the barrier, cannot be implemented easily, because of its cost and the easements it imposes, including that of neutralizing the barrier during the operation, which is delicate in the case of sensitive sites such as military installations, industrial, etc ...

Il n'existe pas actuellement de solution simple permettant de remédier à ces deux types de problèmes, qui résultent d'une seule cause, qui est la coupure intempestive du dernier faisceau IR inférieur.There is currently no simple solution for remedy these two types of problems, which result from a single cause, which is the untimely cutting of the last lower IR beam.

Selon l'invention, on dispose un obstacle vertical au niveau du sol de manière à sensiblement remplacer le faisceau inférieur. Cet obstacle est disposé depuis le sol jusqu'à une hauteur se situant sous le second faisceau initial; il a pour fonction de s'opposer au franchissement par reptation, et doit également être suffisamment haut pour dissuader les petits animaux de le franchir par le dessus. Une hauteur appropriée se situe autour de 40 cm. Simultanément, il est avantageux de munir cet obstacle d'une base destinée à reposer sur le sol, pour assurer la stabilité de l'ensemble. Si la base est suffisamment large, par exemple de l'ordre de 30 cm de part et d'autre de l'obstacle vertical, cette base va s'opposer efficacement à l'envahissement par la végétation et va donc contribuer à la solution du problème posé. Outre le fait qu'elle réduira les perturbations du système par la végétation, elle permettra le nettoyage ou le traitement du sol, de part et d'autre de la base, sans qu'il soit nécessaire de neutraliser la barrière.According to the invention, there is a vertical obstacle at ground level so as to substantially replace the lower beam. This obstacle is arranged from the ground to a height below the second initial beam; its function is to oppose the crossing by crawling, and must also be high enough to deter small animals to cross it from above. An appropriate height is is around 40 cm. At the same time, it is advantageous to provide this obstacle of a base intended to rest on the ground, to ensure the overall stability. If the base is wide enough, for example about 30 cm on either side of the vertical obstacle, this base will effectively counter invasion by vegetation and will therefore contribute to the solution of the problem posed. Besides the fact that it will reduce disturbance of the system by vegetation, it will allow cleaning or the treatment of the soil, on either side of the base, without it being necessary to neutralize the barrier.

Selon un mode préféré de réalisation de l'invention, on dispose des éléments modulaires tels que représentés sur la figure unique annexée, formant un muret après assemblage.According to a preferred embodiment of the invention, there are modular elements as shown in the attached single figure , forming a wall after assembly.

La barrière est constituée de manière générale par des colonnes 20 verticales comportant sur leurs côtés en regard des émetteurs IR e et des récepteurs IR r, de manière connue, ainsi que des boítiers de service 21. L'ensemble délimite un faisceau protecteur de section sensiblement représentée en 22.The barrier generally consists of columns 20 verticals with IR emitters on their sides and IR r receptors, in a known manner, as well as service 21. The whole delimits a section protective beam substantially represented at 22.

Chaque élément 1 selon l'invention se compose d'un élément vertical 3 et d'une base 2. Des ouvertures 4 sont prévues dans les éléments verticaux 3 pour permettre le libre passage des petits animaux. Il a été établi qu'une ouverture de l'ordre de 10 à 15 cm permet aux animaux de circuler sans être tentés par un franchissement par le dessus. Sur le sommet de l'élément vertical 3, on place une herse 5 ou un ensemble de pointes destinées à empêcher les oiseaux de se poser sur le système. Ces pointes peuvent aussi être orientées selon plusieurs directions pour une meilleure efficacité. Le faisceau immédiatement supérieur 7 est naturellement suffisamment proche pour empêcher toute reptation. Les éléments s'assemblent de préférence à l'aide d'entretoises 8, avantageusement en acier inoxydable.Each element 1 according to the invention consists of an element vertical 3 and a base 2. Openings 4 are provided in the vertical elements 3 to allow the free passage of small animals. It has been established that an opening of the order of 10 to 15 cm allows animals to circulate without being tempted by a crossing by the above. On the top of the vertical element 3, a harrow 5 or a set of tips designed to prevent birds from landing on the system. These tips can also be oriented according to several directions for better efficiency. The beam immediately upper 7 is naturally close enough to prevent any crawling. The elements are preferably assembled using spacers 8, advantageously made of stainless steel.

De manière avantageuse, les entretoises 8 sont prolongées dans la masse des éléments, et au moins au niveau des obstacles verticaux, mais de préférence aussi bien dans les éléments verticaux que dans la base, par des gaines plastiques 9 pour le passage de câbles 6. Il s'agira notamment des câbles d'alimentation électrique des colonnes. Ceci représente un autre avantage important de l'invention car les câbles sont à la fois invisibles et protégés, et on peut se dispenser de gaines etc... annexes. On utilisera également ces passages 8, 9 pour former des bouches d'autoprotection, c.a.d. déclenchant une alarme en cas de détérioration (par exemple lors d'une tentative de détérioration du muret).Advantageously, the spacers 8 are extended in the mass of the elements, and at least at the level of the vertical obstacles, but preferably both in the vertical elements and in the base, by plastic sheaths 9 for the passage of cables 6. It will be especially the power cables for the columns. This represents another important advantage of the invention because the cables are both invisible and protected, and you can do without sleeves etc ... annexes. These passages 8, 9 will also be used to form tamper ports, i.e. triggering an alarm in the event of deterioration (for example during an attempted deterioration of the low wall).

L'invention n'est pas limitée à l'exemple donné ci-dessus. L'invention couvre au contraire également tous les modes de réalisation, adaptations diverses et variantes qui seront directement accessibles à l'homme du métier à la lecture du principe général et de l'exemple ci-dessus.The invention is not limited to the example given above. The invention, on the contrary, also covers all the embodiments, various adaptations and variants which will be directly accessible at a person skilled in the art on reading the general principle and the example above.

Ainsi, le muret peut être remplacé par un grillage ou grille ou analogue, comportant des ouvertures 4. La herse peut être remplacée par tout système visant à dissuader les oiseaux de se poser sur le sommet du muret ou de la grille ou grillage ou analogue, comme par exemple un fil électrifié. On peut aussi utiliser sur le haut du muret un double fil électrifié, disposé de telle sorte que l'oiseau ou autre animal établit le contact en se posant ou en prenant appui sur le muret, ce qui déclenche la secousse électrique. On pourra aussi remplacer les deux premiers faisceau inférieurs, et dispositions analogues, selon par exemple la configuration du terrain. Quant aux ouvertures 4, elles peuvent être placées au sol et/ou proches du sol.Thus, the low wall can be replaced by a grid or grid or similar, with openings 4. The harrow can be replaced by any system designed to dissuade birds from landing on the top of the wall or grid or grating or the like, as for example an electrified wire. You can also use on the top of the wall a double electrified wire, arranged so that the bird or other animal establishes contact by landing or resting on the wall, which triggers the electric shock. We can also replace the two first lower beam, and similar arrangements, according to par example the configuration of the terrain. As for the openings 4, they can be placed on the ground and / or close to the ground.

L'invention s'applique à tout type de barrière anti-intrusion pour laquelle se pose le même problème.The invention applies to any type of anti-intrusion barrier for which poses the same problem.

Claims (8)

Barrière IR anti intrusion périmétrique, du type se composant d'éléments verticaux ou colonnes IR 20 disposées autour du périmètre à protéger et contenant les émetteurs e de faisceaux IR régulièrement espacés verticalement, auxquels font face les récepteurs r de la colonne suivante du périmètre, caractérisée en ce que on dispose un obstacle vertical 2 au niveau du sol de manière à sensiblement remplacer le faisceau IR inférieur, l'obstacle comportant des ouvertures 4 au sol ou proches du sol pour le passage des petits animaux.Perimeter IR barrier, of the type consisting vertical elements or IR 20 columns arranged around the perimeter protect and contain IR emitters and beams regularly spaced vertically, which face the r receptors of the next column of the perimeter, characterized in that there is a vertical obstacle 2 at ground level so as to substantially replace the lower IR beam, the obstacle having openings 4 on the ground or close to the ground for the passage of small animals. Barrière IR anti intrusion périmétrique selon la revendication 1, caractérisée en ce que sur le sommet de l'élément vertical 3, on place une herse 5 ou un ensemble de pointes, ou un fil électrifié, ou deux fils électrifiés disposés de telle sorte que l'oiseau ou autre animal établit le contact en se posant ou en prenant appui sur le muret.Perimeter intrusion IR barrier according to claim 1, characterized in that on the top of the vertical element 3, one places a harrow 5 or a set of points, or an electrified wire, or two wires electrified arranged so that the bird or other animal establishes the contact by touching or resting on the wall. Barrière IR anti intrusion périmétrique selon la revendication 1 ou 2, caractérisée en ce que l'obstacle se compose d'éléments 1 modulaires.Perimeter intrusion IR barrier according to claim 1 or 2, characterized in that the obstacle consists of elements 1 modular. Barrière IR anti intrusion périmétrique selon l'une quelconque des revendications 1 à 3, caractérisée en ce que chaque élément 1 selon l'invention se compose d'un élément vertical 3 et d'une base 2, la herse 5 ou le(s) fil(s) électrifié(s) étant disposés sur le sommet de chaque élément vertical 3.Perimeter intrusion IR barrier according to any one claims 1 to 3, characterized in that each element 1 according to the invention consists of a vertical element 3 and a base 2, the harrow 5 or the electrified wire (s) being placed on the top of each vertical element 3. Barrière IR anti intrusion périmétrique selon la revendication 4, caractérisée en ce que les éléments verticaux 3 comportent des ouvertures 4 proches du sol ou au sol. Perimeter intrusion IR barrier according to claim 4, characterized in that the vertical elements 3 include openings 4 close to the ground or to the ground. Barrière IR anti intrusion périmétrique selon l'une quelconque des revendications 3 à 5, caractérisée en ce que les éléments modulaires 1 s'assemblent à l'aide d'entretoises 8.Perimeter intrusion IR barrier according to any one claims 3 to 5, characterized in that the elements modular 1 are assembled using spacers 8. Barrière IR anti intrusion périmétrique selon la revendication 6, caractérisée en ce que les entretoises 8 sont prolongées dans la masse des éléments, et au moins au niveau des obstacles verticaux, mais de préférence aussi bien dans les éléments verticaux que dans la base, par des gaines plastiques 9 pour le passage de câbles 6 d'alimentation des colonnes et d'autoprotection.Perimeter intrusion IR barrier according to claim 6, characterized in that the spacers 8 are extended in the mass of the elements, and at least at the level of the vertical obstacles, but preferably both in the vertical elements and in the base, by plastic sheaths 9 for cable passage 6 column supply and self-protection. Eléments modulaires permettant de former un obstacle vertical pour barrière IR selon l'une quelconque des revendications 1 à 7, ces éléments étant tels que définis dans l'une quelconque des revendications 3 à 7.Modular elements to form a vertical obstacle for IR barrier according to any one of claims 1 to 7, these elements being as defined in any of claims 3 to 7.
EP98203408A 1997-10-10 1998-10-12 Anti-intrusion wall and its use in nfrared barriers Withdrawn EP0908859A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9712861 1997-10-10
FR9712861A FR2769739B1 (en) 1997-10-10 1997-10-10 ANTI-INTRUSION WALL AND ITS APPLICATION IN INFRARED BARRIERS

Publications (1)

Publication Number Publication Date
EP0908859A1 true EP0908859A1 (en) 1999-04-14

Family

ID=9512229

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98203408A Withdrawn EP0908859A1 (en) 1997-10-10 1998-10-12 Anti-intrusion wall and its use in nfrared barriers

Country Status (2)

Country Link
EP (1) EP0908859A1 (en)
FR (1) FR2769739B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2852043A1 (en) * 2003-03-07 2004-09-10 Firstinnov Swimming pool access limiting device for young child, has system with mounting disposed in field of reception of directive signal emitted by another mounting to detect low height crossing above barrier when signal is interrupted
FR2860092A1 (en) * 2003-09-19 2005-03-25 Sorhea Sa Infrared barrier device for swimming pool, has upper and lower beams situated at specific centimeter from ground with different response times, where lower beam detects child who crawls and upper beam detects child who runs
WO2009126402A1 (en) * 2008-04-11 2009-10-15 Raytheon Company Directed energy beam virtual fence
CN105155917A (en) * 2015-10-08 2015-12-16 国家电网公司 Visual sensing warning type safety barrier fence
US9922511B2 (en) 2010-10-29 2018-03-20 Societe Rhodanienne D'electronique Appliquee-Sorhea Fence with localized intrusion detection

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108898771A (en) * 2018-08-31 2018-11-27 重庆节节高科技发展有限公司 A kind of unattended intelligent warning stake fence is strayed into detection method and system
CN111561225A (en) * 2020-05-20 2020-08-21 国网黑龙江省电力有限公司检修公司 Automatic control system and control method for security fence management

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3825916A (en) * 1972-10-20 1974-07-23 California Crime Technological Laser fence
DE2324008A1 (en) * 1973-05-12 1974-11-28 Peter Hans PROTECTION OF OBJECTS (FACILITIES AND TERRITORY) AGAINST UNAUTHORIZED ENTRY USING LASER METHODS
FR2326145A1 (en) * 1975-09-30 1977-04-29 Trefilunion Metal trellis security fence mounted on wall - consists of intersecting wires forming electrical conductor line connected to alarm and signal panel
GB2201705A (en) * 1987-03-05 1988-09-07 Thomas Edward Douglas Barriers supported from other barriers, e.g. electrified, animal barriers through walls

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3825916A (en) * 1972-10-20 1974-07-23 California Crime Technological Laser fence
DE2324008A1 (en) * 1973-05-12 1974-11-28 Peter Hans PROTECTION OF OBJECTS (FACILITIES AND TERRITORY) AGAINST UNAUTHORIZED ENTRY USING LASER METHODS
FR2326145A1 (en) * 1975-09-30 1977-04-29 Trefilunion Metal trellis security fence mounted on wall - consists of intersecting wires forming electrical conductor line connected to alarm and signal panel
GB2201705A (en) * 1987-03-05 1988-09-07 Thomas Edward Douglas Barriers supported from other barriers, e.g. electrified, animal barriers through walls

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2852043A1 (en) * 2003-03-07 2004-09-10 Firstinnov Swimming pool access limiting device for young child, has system with mounting disposed in field of reception of directive signal emitted by another mounting to detect low height crossing above barrier when signal is interrupted
FR2860092A1 (en) * 2003-09-19 2005-03-25 Sorhea Sa Infrared barrier device for swimming pool, has upper and lower beams situated at specific centimeter from ground with different response times, where lower beam detects child who crawls and upper beam detects child who runs
WO2009126402A1 (en) * 2008-04-11 2009-10-15 Raytheon Company Directed energy beam virtual fence
US7902979B2 (en) 2008-04-11 2011-03-08 Raytheon Company Directed energy beam virtual fence
JP2011516991A (en) * 2008-04-11 2011-05-26 レイセオン カンパニー Directional energy beam virtual fence
US9922511B2 (en) 2010-10-29 2018-03-20 Societe Rhodanienne D'electronique Appliquee-Sorhea Fence with localized intrusion detection
CN105155917A (en) * 2015-10-08 2015-12-16 国家电网公司 Visual sensing warning type safety barrier fence

Also Published As

Publication number Publication date
FR2769739B1 (en) 2000-04-07
FR2769739A1 (en) 1999-04-16

Similar Documents

Publication Publication Date Title
US4676485A (en) Intrusion warning wire fence
EP0908859A1 (en) Anti-intrusion wall and its use in nfrared barriers
LU84190A1 (en) FENCE ASSEMBLY
JP2009011280A (en) Fence for preventing intrusion of wild animals
WO2015136042A1 (en) Device for protection against terrestrial gastropods
US20080110106A1 (en) Apparatus For Preventing Birds Accessing a Habitable Part of a Structure
US5967084A (en) Apparatus for controlling movements of mollusca and the like
KR102262865B1 (en) Ridge Network with Animal Barrier
EP0961545B1 (en) Current conducting device for protecting buildings against birds
EP3422312B1 (en) Electric fence system with smart protection
US6684578B1 (en) Kudzu control method and apparatus
FR2742022A1 (en) PROTECTION SYSTEM OF ORCHARDS, ESPECIALLY FRUIT TREES AGAINST WEATHER AND EQUIPMENT FOR IMPLEMENTING THE SAID PROCESS
EP0359762A1 (en) Sensing element for an alarm system.
FR2710229A1 (en) Modular window box for urban use
EP0877344A1 (en) Security fence consisting of conductive meshes
FR2860092A1 (en) Infrared barrier device for swimming pool, has upper and lower beams situated at specific centimeter from ground with different response times, where lower beam detects child who crawls and upper beam detects child who runs
DE2739165C2 (en) Defense device against the penetration of ground-based pests into systems in need of protection
GB2225598A (en) Spiked Security Means
FR2637635A1 (en) Improved guardrail and device allowing it to be secured in the ground
EP3404632B1 (en) Electrical protection system
FR2842705A1 (en) Insect barrier, for plant pot, has electrically conductive fabric strip connected to power source
JP2002315496A (en) Invasion preventing fence against harmful animal
EP1094263A1 (en) Stiffening element for a narrow warning screen comprising a detecting wire
FR2849253A1 (en) Security fence has panel wires with insulated conducting wires under metal layer and outer insulation and intrusion monitoring of current flow
JP3154153U (en) Beast intrusion prevention fence

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 19991014

AKX Designation fees paid

Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17Q First examination report despatched

Effective date: 20020409

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20020820