EP0843070B1 - Arrangement for detecting an obstacle, roller-door and/or roller-shutter with such arrangement - Google Patents
Arrangement for detecting an obstacle, roller-door and/or roller-shutter with such arrangement Download PDFInfo
- Publication number
- EP0843070B1 EP0843070B1 EP19970420216 EP97420216A EP0843070B1 EP 0843070 B1 EP0843070 B1 EP 0843070B1 EP 19970420216 EP19970420216 EP 19970420216 EP 97420216 A EP97420216 A EP 97420216A EP 0843070 B1 EP0843070 B1 EP 0843070B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cell
- obstacle
- door
- roller
- detection device
- 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.)
- Expired - Lifetime
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
- E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
- E06B9/88—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for limiting unrolling
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/68—Operating devices or mechanisms, e.g. with electric drive
- E06B2009/6809—Control
- E06B2009/6818—Control using sensors
- E06B2009/6836—Control using sensors sensing obstacle
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/68—Operating devices or mechanisms, e.g. with electric drive
- E06B2009/6809—Control
- E06B2009/6818—Control using sensors
- E06B2009/6845—Control using sensors sensing position
Definitions
- the present invention relates to a detection device an obstacle for a handling door or a roller shutter and a handling door or a roller shutter fitted with a such device.
- Detection devices which include one or more opto-electronic cells arranged in the door or shutter jambs or rails, these cells being able to inhibit the functioning of the drive system shutter or door when an obstacle is in in front of them.
- this or these cells are not capable of react only when the obstacle is directly in front of them, which results in imprecision of the detection device and in possible maneuvers of the shutter or the door when the obstacle is located below or above the cell.
- switches and operating fingers include moving parts which must be able to move under load, especially under the weight of the soft strands of the roller shutter, so that these are likely to get deform due to the fatigue of the materials used. These parts must therefore be provided robust, which increases their cost price and harms overall economic performance of the device.
- the invention aims to solve these problems and to propose a effective detection device, i.e. capable of reacting regardless of the position of an obstacle under the apron flexible and having no part in contact with the apron, so there is no risk of breakage or deformation of these parts.
- the invention relates to a device for detection of an obstacle preventing the operation of a flexible apron of a handling door or a shutter rolling, characterized in that it comprises a opto-electronic detection arranged near the shaft curtain winding outside the winding area of this apron.
- the invention no part of the detection is not likely to be in contact with the apron, so any risk of breakage or fatigue wear can to be avoided.
- the position of the deck around its winding shaft and, in particular, the possible formation of a strand slack is detected by the opto-electronic cell which is placed out of reach of the deck and therefore does not risk being damaged.
- the cell is oriented to aim in a direction parallel to the winding shaft. Thanks to this aspect of the invention, the unit is able to react as soon as part of the deck interrupts a wave beam oriented parallel to the shaft winding.
- the cell is of the transceiver type and cooperates with a reflecting device located opposite the cell to outside of the deck winding area. Thanks to this aspect of the invention, a single cell located on one side of the apron is sufficient to constitute a device for effective detection.
- the invention also relates to a handling door or a roller shutter equipped with a detection device such as previously described.
- a handling door 1 comprises a flexible curtain or apron 2 which can be wrapped around a substantially horizontal shaft 3, this tree being driven in rotation by an electric motor not shown.
- the door also includes two lateral uprights 5 and 6 each forming a vertical slide of which only one 7 is visible in Figures 2 and 3.
- a load bar 8 is arranged at the lower end apron 2.
- an opto-electronic cell 10 is arranged on the upright 6 near the shaft winding 3, outside the winding area of the apron 2.
- cell 10 is protected against movement of the apron 2.
- the cell is oriented towards a device reflective 11 arranged on the upright 5 opposite the cell 10 and outside the deck winding area 2.
- the reflecting device 11 is also out of reach of the apron 2.
- Cell 10 is of the transmitter-receiver type, so that it emits towards the reflecting device 11 a beam F of light, infrared, ultra-violet rays or of any other suitable type, which it receives back after that it has been returned by device 11.
- the detection device of the invention is effective regardless of the height of the obstacle 13, which is a significant advance over devices with an optoelectronic cell located in or near one of the slides 7. Furthermore, like no other part mechanical is not likely to be moved by the deck 2, it is not necessary to provide a protective cover for insulate such a room from the ambient atmosphere, especially when the door is installed inside a industrial premises. Indeed, cell 10 and the device reflective 11 are able to work in any that it atmosphere and do not see their characteristics altered by a deposit of dust.
- the device comprises several distributed cells around the winding shaft, as it appears with the 10 'and 10 "cells shown in phantom in the figure 3. These 10 'and 10 "cells cooperate with cell 10 to detect the formation of a soft strand equivalent to the soft strand 2a in different angular sectors around the tree 3, of so that the device is able to react as soon as a soft strand and without waiting for it to develop so important to the point of passing in front of a cell arranged in a particular angular sector. This helps improve the response time of the detection device of the invention.
- a handling door or a roller shutter fitted with a detection device according to the invention is therefore safe insofar as he or she comprises a device capable of react regardless of the height of the obstacle 13 and which does not not likely to be damaged by a shock due to the apron in progress winding or wear of the parts in contact with it apron.
Description
La présente invention a trait à un dispositif de détection d'un obstacle pour une porte de manutention ou un volet roulant et à une porte de manutention ou à un volet roulant équipé d'un tel dispositif.The present invention relates to a detection device an obstacle for a handling door or a roller shutter and a handling door or a roller shutter fitted with a such device.
On connaít des dispositifs de détection qui sont conçus pour arrêter la descente et/ou actionner le relevage de la porte ou du volet quand celle-ci ou celui-ci rencontre un obstacle lors de sa descente.There are known detection devices which are designed to stop the descent and / or activate the lifting of the door or shutter when it or it meets a obstacle during its descent.
On connaít des dispositifs de détection qui comprennent une ou plusieurs cellules opto-électroniques disposées dans les montants ou glissières de la porte ou du volet, ces cellules étant aptes à inhiber le fonctionnement du système d'entraínement du volet ou de la porte lorsqu'un obstacle se trouve en face d'elles. Cependant, cette ou ces cellules ne sont aptes à réagir que lorsque l'obstacle est directement en face d'elles, ce qui résulte dans une imprécision du dispositif de détection et dans de possibles manoeuvres du volet ou de la porte lorsque l'obstacle est situé en dessous ou en dessus de la cellule.Detection devices are known which include one or more opto-electronic cells arranged in the door or shutter jambs or rails, these cells being able to inhibit the functioning of the drive system shutter or door when an obstacle is in in front of them. However, this or these cells are not capable of react only when the obstacle is directly in front of them, which results in imprecision of the detection device and in possible maneuvers of the shutter or the door when the obstacle is located below or above the cell.
On connaít par ailleurs, par le brevet CH-A-548 523, un dispositif de détection d'un obstacle dans lequel deux interrupteurs sont disposés respectivement au-dessus et au-dessous de l'arbre d'enroulement d'un volet roulant. Chaque interrupteur est associé à un doigt de manoeuvre et à un ressort et est susceptible d'agir sur le dispositif d'entraínement de la roue d'enroulement lorsqu'un brin mou est en appui sur le doigt de l'un des interrupteurs. Les doigts de manoeuvre et les interrupteurs sont montés dans la zone d'enroulement du tablier et peuvent être endommagés en cas de fausse manoeuvre, en particulier si un brin mou de longueur et de poids importants se forme avant que l'enroulement ou le déroulement du tablier se soit interrompu. Il en résulte donc un risque de déformation, voire de rupture, des doigts de manoeuvre et/ou des interrupteurs, ce qui entraíne des interventions longues et pénibles.We also know, from patent CH-A-548,523, a obstacle detection device in which two switches are arranged respectively above and below of the winding shaft of a roller shutter. Each switch is associated with an operating finger and a spring and is likely to act on the wheel drive device of winding when a soft strand is supported on the finger one of the switches. Operating fingers and switches are mounted in the deck winding area and can be damaged in the event of a wrong operation, in particular if a soft strand of significant length and weight is formed before the winding or unwinding of the apron has interrupted. This therefore results in a risk of deformation, or even breaking, operating fingers and / or switches, this which leads to long and painful interventions.
En outre, les interrupteurs et les doigts de manoeuvre comprennent des pièces mobiles qui doivent être aptes à bouger sous charge, en particulier sous le poids des brins mous du volet roulant, de sorte que celles-ci sont susceptibles de se déformer à cause de la fatigue des matériaux utilisés. Ces pièces doivent donc être prévues robustes, ce qui majore leur prix de revient et nuit aux performances économiques globales du dispositif.In addition, switches and operating fingers include moving parts which must be able to move under load, especially under the weight of the soft strands of the roller shutter, so that these are likely to get deform due to the fatigue of the materials used. These parts must therefore be provided robust, which increases their cost price and harms overall economic performance of the device.
L'invention vise à résoudre ces problèmes et à proposer un dispositif de détection efficace, c'est-à-dire apte à réagir quelle que soit la position d'un obstacle sous le tablier souple et ne comportant pas de pièce en contact avec le tablier, de sorte qu'il n'existe pas de risque de rupture ou de déformation de ces pièces.The invention aims to solve these problems and to propose a effective detection device, i.e. capable of reacting regardless of the position of an obstacle under the apron flexible and having no part in contact with the apron, so there is no risk of breakage or deformation of these parts.
Dans cet esprit, l'invention concerne un dispositif de détection d'un obstacle empêchant le fonctionnement d'un tablier souple d'une porte de manutention ou d'un volet roulant, caractérisé en ce qu'il comprend une cellule de détection opto-électronique disposée à proximité de l'arbre d'enroulement du tablier, à l'extérieur de la zone d'enroulement de ce tablier.In this spirit, the invention relates to a device for detection of an obstacle preventing the operation of a flexible apron of a handling door or a shutter rolling, characterized in that it comprises a opto-electronic detection arranged near the shaft curtain winding outside the winding area of this apron.
Grâce à l'invention, aucune pièce du dispositif de détection n'est susceptible d'être en contact avec le tablier, de sorte que tout risque de casse ou d'usure en fatigue peut être évité. La position du tablier autour de son arbre d'enroulement et, en particulier, la formation éventuelle d'un brin mou est détectée par la cellule opto-électronique qui est disposée hors de portée du tablier et ne risque donc pas d'être endommagée.Thanks to the invention, no part of the detection is not likely to be in contact with the apron, so any risk of breakage or fatigue wear can to be avoided. The position of the deck around its winding shaft and, in particular, the possible formation of a strand slack is detected by the opto-electronic cell which is placed out of reach of the deck and therefore does not risk being damaged.
Selon un premier aspect avantageux de l'invention, la cellule est orientée pour viser dans une direction parallèle à l'arbre d'enroulement. Grâce à cet aspect de l'invention, la cellule est apte à réagir dès qu'une partie du tablier interrompt un faisceau d'ondes orienté parallèlement à l'arbre d'enroulement.According to a first advantageous aspect of the invention, the cell is oriented to aim in a direction parallel to the winding shaft. Thanks to this aspect of the invention, the unit is able to react as soon as part of the deck interrupts a wave beam oriented parallel to the shaft winding.
Selon un autre aspect avantageux de l'invention, la cellule est du type émettrice-réceptrice et coopère avec un dispositif réfléchissant situé en regard de la cellule à l'extérieur de la zone d'enroulement du tablier. Grâce à cet aspect de l'invention, une unique cellule située d'un côté du tablier est suffisante pour constituer un dispositif de détection efficace.According to another advantageous aspect of the invention, the cell is of the transceiver type and cooperates with a reflecting device located opposite the cell to outside of the deck winding area. Thanks to this aspect of the invention, a single cell located on one side of the apron is sufficient to constitute a device for effective detection.
Selon un autre aspect avantageux de l'invention, on peut prévoir que plusieurs cellules sont réparties autour de l'arbre d'enroulement, ces différentes cellules étant aptes à détecter la formation d'un brin mou dans différents secteurs angulaires répartis autour de l'arbre d'enroulement.According to another advantageous aspect of the invention, it is possible to predict that several cells are distributed around the tree of winding, these different cells being able to detect the formation of a soft strand in different angular sectors distributed around the winding shaft.
L'invention concerne aussi une porte de manutention ou un volet roulant équipé d'un dispositif de détection tel que précédemment décrit.The invention also relates to a handling door or a roller shutter equipped with a detection device such as previously described.
L'invention sera mieux comprise et d'autres avantages de celle-ci apparaítront plus clairement à la lumière de la description qui va suivre d'un mode de réalisation d'un dispositif de détection conforme à son principe, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :
- la figure 1 est une vue en perspective d'une porte de manutention équipée d'un dispositif de détection conforme à l'invention ;
- la figure 2 est une coupe selon la ligne II-II à la figure 1 alors que la porte est en cours de fermeture et
- la figure 3 est une coupe analogue à la figure 2 lorsqu'un obstacle est présent sur la trajectoire du tablier de la porte en cours de fermeture.
- Figure 1 is a perspective view of a handling door equipped with a detection device according to the invention;
- Figure 2 is a section along line II-II in Figure 1 while the door is being closed and
- Figure 3 is a section similar to Figure 2 when an obstacle is present on the path of the door leaf being closed.
A la figure 1, une porte de manutention 1 comprend un
rideau ou tablier souple 2 qui peut être enroulé autour d'un
arbre sensiblement horizontal 3, cet arbre étant entraíné en
rotation grâce à un moteur électrique non représenté. La porte
comprend aussi deux montants latéraux 5 et 6 formant chacun une
glissière verticale dont une seule 7 est visible aux figures 2
et 3. Une barre de charge 8 est disposée à l'extrémité inférieure
du tablier 2.In FIG. 1, a handling
Conformément à l'invention, une cellule opto-électronique
10 est disposée sur le montant 6 à proximité de l'arbre
d'enroulement 3, à l'extérieur de la zone d'enroulement du
tablier 2.According to the invention, an opto-
Ainsi, la cellule 10 est protégée contre les mouvements du
tablier 2. La cellule est orientée en direction d'un dispositif
réfléchissant 11 disposé sur le montant 5 en regard de la
cellule 10 et à l'extérieur de la zone d'enroulement du tablier
2. Le dispositif réfléchissant 11 est aussi hors d'atteinte du
tablier 2. La cellule 10 est du type émettrice-réceptrice, de
sorte qu'elle émet en direction du dispositif réfléchissant 11
un faisceau F de rayons lumineux, infrarouges, ultra-violets ou
de tout autre type adapté, dont elle capte le retour après
qu'il a été renvoyé par le dispositif 11.Thus,
Le fonctionnement du dispositif de détection apparaít en comparant les figures 2 et 3. Dans ces figures, le tablier a été représenté en vue extérieure pour la clarté du dessin.The operation of the detection device appears in comparing Figures 2 and 3. In these figures, the deck has been shown in external view for clarity of the drawing.
Dans la position de la figure 2, lorsque le tablier 2 est
déroulé de façon à fermer la porte 1 et en l'absence d'obstacle,
aucune partie du tablier 2 ne passe devant la cellule 10,
de sorte que le faisceau F ne risque pas d'être interrompu.In the position of Figure 2, when the
Au contraire, si un obstacle 13 se situe sur la trajectoire
du tablier 2, la barre de charge 8 entre en contact avec
celui-ci, comme représenté à la figure 3, de sorte que, comme
l'arbre 3 effectue un mouvement de rotation dans le sens
trigonométrique, un brin mou 2a du tablier 2 se développe au
point qu'il passe devant la partie active de la cellule 10 et
que le faisceau F est interrompu, ceci étant détecté par la
cellule 10. Celle-ci est alors en mesure d'inhiber le fonctionnement
du système de fonctionnement de l'arbre 3, voire de
commander une rotation en sens inverse afin de relever au moins
partiellement le tablier 2.On the contrary, if an
On note que le dispositif de détection de l'invention est
efficace quelle que soit la hauteur de l'obstacle 13, ce qui
est un progrès important par rapport aux dispositifs pourvus
d'une cellule opto-électronique disposée dans ou à proximité
d'une des glissières 7. Par ailleurs, comme aucune pièce
mécanique n'est susceptible d'être déplacée par le tablier 2,
il n'est pas nécessaire de prévoir de capot de protection pour
isoler une telle pièce par rapport à l'atmosphère ambiante, en
particulier lorsque la porte est installée à l'intérieur d'un
local industriel. En effet, la cellule 10 et le dispositif
réfléchissant 11 sont aptes à fonctionner dans n'importe
qu'elle atmosphère et ne voient pas leurs caractéristiques
altérées par un dépôt de poussière.Note that the detection device of the invention is
effective regardless of the height of the
Selon une variante avantageuse de l'invention, on peut
prévoir que le dispositif comprend plusieurs cellules réparties
autour de l'arbre d'enroulement, comme cela apparaít avec les
cellules 10' et 10" représentées en traits mixtes à la figure
3. Ces cellules 10' et 10" coopèrent avec la cellule 10 pour
détecter la formation d'un brin mou équivalent au brin mou 2a
dans différents secteurs angulaires autour de l'arbre 3, de
sorte que le dispositif est apte à réagir dès la formation d'un
brin mou et sans attendre que celui-ci se développe de façon
importante au point de passer devant une cellule disposée dans
un secteur angulaire particulier. Ceci contribue à améliorer le
temps de réponse du dispositif de détection de l'invention.According to an advantageous variant of the invention, it is possible to
provide that the device comprises several distributed cells
around the winding shaft, as it appears with the
10 'and 10 "cells shown in phantom in the figure
3. These 10 'and 10 "cells cooperate with
Une porte de manutention ou un volet roulant équipé d'un
dispositif de détection conforme à l'invention est donc sûr
dans la mesure où il ou elle comprend un dispositif apte à
réagir quelle que soit la hauteur de l'obstacle 13 et qui ne
risque pas d'être détérioré par un choc dû au tablier en cours
d'enroulement ou par usure des pièces en contact avec ce
tablier.A handling door or a roller shutter fitted with a
detection device according to the invention is therefore safe
insofar as he or she comprises a device capable of
react regardless of the height of the
Claims (5)
- Device for detecting an obstacle (13) preventing the operation of a flexible screen (2) with a handling door (1) or a roller shutter, characterized in that it comprises an opto-electronic detection cell (10) arranged near the shaft (3) around which the said screen is wound, outside the region in which the said screen is wound.
- Detection device according to Claim 1, characterized in that the said cell (10) is orientated to aim in a direction parallel to the said winding shaft (3).
- Detection device according to Claim 2, characterized in that the said cell is of the emitting/receiving type and collaborates with a reflective device (11) situated facing the said cell (10) outside the region in which the said screen (2) is wound.
- Detection device according to one of Claims 1 to 3, characterized in that it comprises several cells (10, 10', 10") distributed around the said winding shaft.
- Handling door (1) for a roller shutter equipped with a detection device according to one of the preceding claims.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9614419A FR2756000B1 (en) | 1996-11-19 | 1996-11-19 | OBSTACLE DETECTION DEVICE, HANDLING DOOR AND / OR ROLLING SHUTTER EQUIPPED WITH SUCH A DEVICE |
| FR9614419 | 1996-11-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0843070A1 EP0843070A1 (en) | 1998-05-20 |
| EP0843070B1 true EP0843070B1 (en) | 2003-03-12 |
Family
ID=9498002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19970420216 Expired - Lifetime EP0843070B1 (en) | 1996-11-19 | 1997-11-18 | Arrangement for detecting an obstacle, roller-door and/or roller-shutter with such arrangement |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0843070B1 (en) |
| DE (1) | DE69719675T2 (en) |
| FR (1) | FR2756000B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7045764B2 (en) | 2002-10-17 | 2006-05-16 | Rite-Hite Holding Corporation | Passive detection system for detecting a body near a door |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19948202A1 (en) * | 1999-10-06 | 2001-04-12 | Barthelt Hans Peter | Roller shutter control |
| EP1233138A1 (en) * | 2001-02-16 | 2002-08-21 | Dynaco International | Device with a flexible shutter |
| ATE275234T1 (en) * | 2001-06-05 | 2004-09-15 | Hugo Tobler | SHADING DEVICE WITH A MOVABLE BLIND |
| BE1016320A3 (en) * | 2004-03-17 | 2006-08-01 | Dynaco International Sa | CURTAIN DEVICE unwound. |
| FR2883584B1 (en) | 2005-03-25 | 2007-06-08 | Maviflex Sa Sa | DEVICE FOR DETECTING AN OBSTACLE AND FOR LIMITING THE EFFORT OF AN APRON OF A HANDLING DOOR |
| FR2901836B1 (en) * | 2006-06-02 | 2008-08-29 | Maviflex Sa | SAFETY SYSTEM FOR A FLEXIBLE CURTAIN HANDLING DOOR. |
| DE102013017671A1 (en) * | 2013-10-25 | 2015-04-30 | ARDE Hizli Kapi Sistemleri San. ve Tic. A.S. | Gate for closing an opening and methods for controlling the gate |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH548523A (en) * | 1973-04-06 | 1974-04-30 | Luescher Paul Luekon Fabrik Fu | ROLLER SHUTTERS OR ROLLER DOORS WITH ELECTRIC MOTOR DRIVE. |
| DE3618766A1 (en) * | 1986-06-04 | 1987-12-10 | Bothe Werner | Safety device for doors or the like |
| DE3709592A1 (en) * | 1987-03-24 | 1988-10-13 | Schieffer Gmbh Co Kg | QUICK OPEN DOOR |
| DE29511673U1 (en) * | 1995-07-19 | 1996-02-01 | Marantec Antrieb Steuerung | Security device for gates |
-
1996
- 1996-11-19 FR FR9614419A patent/FR2756000B1/en not_active Expired - Fee Related
-
1997
- 1997-11-18 DE DE1997619675 patent/DE69719675T2/en not_active Expired - Lifetime
- 1997-11-18 EP EP19970420216 patent/EP0843070B1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7045764B2 (en) | 2002-10-17 | 2006-05-16 | Rite-Hite Holding Corporation | Passive detection system for detecting a body near a door |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2756000A1 (en) | 1998-05-22 |
| DE69719675T2 (en) | 2004-02-05 |
| DE69719675D1 (en) | 2003-04-17 |
| EP0843070A1 (en) | 1998-05-20 |
| FR2756000B1 (en) | 1999-01-29 |
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