FR2687702A1 - Motorised retractable post - Google Patents

Motorised retractable post Download PDF

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Publication number
FR2687702A1
FR2687702A1 FR9202266A FR9202266A FR2687702A1 FR 2687702 A1 FR2687702 A1 FR 2687702A1 FR 9202266 A FR9202266 A FR 9202266A FR 9202266 A FR9202266 A FR 9202266A FR 2687702 A1 FR2687702 A1 FR 2687702A1
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France
Prior art keywords
strap
terminal
motorized
uprights
bollard
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Granted
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FR9202266A
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French (fr)
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FR2687702B1 (en
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Patrick Vassal
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F13/00—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
    • E01F13/04—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage
    • E01F13/044—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage the barrier being formed by obstructing members situated on, flush with, or below the traffic surface, e.g. with inflatable members on the surface
    • E01F13/046—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage the barrier being formed by obstructing members situated on, flush with, or below the traffic surface, e.g. with inflatable members on the surface the obstructing members moving up in a translatory motion, e.g. telescopic barrier posts
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
    • E01F9/623—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection
    • E01F9/646—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection extensible, collapsible or pivotable

Abstract

The invention relates to a motorised retractable post (1) contained in a container (3) embedded in the ground, the extension of which above the ground is controlled by a motor winch (11) on whose drum (12) the two ends of the strap (13) are diametrically fixed, which strap is deployed in the vertical plane, supported by rollers (14, 15, 16 and 17) and itself supporting, by means of the rollers (18) and (19), the mobile chassis (7) which is integral with the post (1) and which can be moved vertically, guided by the sets of rollers (5) and (6) which bear on each of the vertical uprights (4) arranged on either side of the diametrical vertical plane. The post (1) is thus moved vertically by means of the tension in the loop of the strap (13) wound on the drum (12) of the winch (11), it being lowered by reverse movement of the winch (11). The invention may be used for barring access to certain public or private roadways to vehicles.

Description

BORNE ESCAMOTABLE MOTORISEE. MOTORIZED RETRACTABLE TERMINAL.

L'invention concerne une borne escamotable motorisée destinée à être introduite dans une cavité de la chaussée publique ou privée, afin de s'opposer par son émergence à la circulation de véhicules en des lieux déterminés: entrée de rue piétonnière, entrée de parking public ou privé, entrée d'immeuble ou d'administration etc... The invention relates to a retractable motorized bollard intended to be introduced into a cavity of the public or private roadway, in order to oppose by its emergence the circulation of vehicles in specific places: pedestrian street entrance, public parking entrance or private, building or administration entrance etc ...

Ii existe plusieurs moyens de manoeuvrer de telles bornes, permettant leur émergence hors du sol et leur rentrée dans leur alvéole souterraine. There are several ways of operating such bollards, allowing them to emerge from the ground and re-enter their underground cell.

Certains moyens utilisent un vérin pneumatique qui nécessite donc une réserve ou une source de gaz comprimé ainsi que des vannes de commande, autant d'organes onéreux, encombrants et délicats donc nécessitant un entretien onéreux aussi. Some means use a pneumatic cylinder which therefore requires a reserve or a source of compressed gas as well as control valves, as many expensive, bulky and delicate components therefore requiring expensive maintenance too.

D'autres, utilisant aussi un vérin pneumatique, comptent sur l'air comprimé dans le vérin par l'opérateur lui-même en effectuant la pression nécessaire pour effectuer la descente de la borne pour que cet air comprimé ainsi emmagasiné dans le vérin refasse surgir la borne hors du sol dès qu'on la libère. Others, also using a pneumatic cylinder, rely on the compressed air in the cylinder by the operator himself by applying the pressure necessary to lower the terminal so that this compressed air thus stored in the cylinder recovers the bollard above the ground as soon as it is released.

Un tel dispositif nécessite un effort non négligeable de l'opérateur. Such a device requires a significant effort from the operator.

De plus il nécessite une parfaite étanchéité des points du vérin pour qu'il n'y ait aucune perte d'air comprimé ni au cours des manoeuvres, ni en période d'attente. Enfin il nécessite un rendement 100 % pour que la borne ressorte au dessus du sol d'une hauteur égale à celle dont elle a été enfoncée, par le seul effet de l'air comprimé au cours de cette manoeuvre.In addition, it requires perfect sealing of the points of the jack so that there is no loss of compressed air either during the maneuvers or during the waiting period. Finally, it requires a 100% efficiency for the terminal to come out above the ground at a height equal to that of which it was pressed, by the sole effect of compressed air during this maneuver.

Résultat utopique pour lequel il n'est pas tenu compte du frottement et des fuites inévitables.Utopian result for which no account is taken of friction and inevitable leaks.

D'autres dispositifs plus réalistes utilisent un vérin à vis vertical. Other more realistic devices use a vertical screw jack.

Leur manoeuvre a pour principal inconvénient d'être lente. De plus l'usure de l'écrou mobile du vérin n'est pas négligeable, sauf quand il s'agit de vérin à vis à écrou à billes. Il s'agit alors d'un dispositif onéreux, d'autant plus que l'étanchéité de cet écrou à billes doit être particulièrement sûre pour éviter sa détérioration par la pénétration de l'eau qui peut envahir le réceptacle de cette borne enfoui dans le sol.Their main disadvantage is that they are slow. In addition, the wear of the mobile nut of the jack is not negligible, except when it is a screw jack with ball nut. It is then an expensive device, all the more since the tightness of this ball nut must be particularly safe to avoid its deterioration by the penetration of water which can invade the receptacle of this terminal buried in the ground.

La présente invention a donc pour but d'éviter ces inconvénients. The present invention therefore aims to avoid these drawbacks.

Pour cela la manoeuvre de la borne escamotable est obtenue au moyen d'un dispositif robuste, peu onéreux et ne nécessitant que peu d'entretien. Il est constitué par un treuil électrique situé à la base du réceptacle recevant la borne abaissée, ledit treuil effectuant l'enroulement simultané des deux extrémités d'une sangle formant une boucle passant sur deux poulies de rappel supérieures entre lesquelles la borne est posée sur ladite sangle qui, en se tendant sous l'effet de l'enroulement simultané de ses deux extrémités sur le tambour du treuil, assure l'élévation de la borne.For this, the operation of the retractable terminal is obtained by means of a robust device, inexpensive and requiring little maintenance. It consists of an electric winch located at the base of the receptacle receiving the lowered terminal, said winch simultaneously winding the two ends of a strap forming a loop passing over two upper return pulleys between which the terminal is placed on said strap which, by tightening under the effect of the simultaneous winding of its two ends on the winch drum, ensures the elevation of the terminal.

La figure 1 est une vue schématique du système de manoeuvre, la borne elle-même étant en position haute. Figure 1 is a schematic view of the operating system, the terminal itself being in the high position.

La figure 2 est une vue schématique du même système, la borne étant en position basse. Figure 2 is a schematic view of the same system, the terminal being in the lower position.

Ainsi représenté le dispositif comporte la borne 1 traversant la platine 2 fixée au réceptacle 3 incrusté dans le sol. Thus shown, the device comprises the terminal 1 passing through the plate 2 fixed to the receptacle 3 embedded in the ground.

La platine 2 supporte à sa partie inférieure le châssis fixe formé des deux montants verticaux 4 symétriquement disposés de part et d'autre de l'axe de la borne 1 et qui assurent le guidage vertical de cette dernière qui est munie pour cela des jeux de galets 5 et 6 montés sur le châssis mobile 7 solidaire de la borne 1 et qui enserrent chacun des montants 4 de guidage. The plate 2 supports at its lower part the fixed frame formed by two vertical uprights 4 symmetrically arranged on either side of the axis of the terminal 1 and which ensure the vertical guiding of the latter which is provided for this with sets of rollers 5 and 6 mounted on the movable frame 7 integral with the terminal 1 and which enclose each of the uprights 4 of guide.

Par ailleurs le châssis fixe est complété par les montants verticaux 8 et 9 placés symétriquement de part et d'autre du châssis mobile 7 dans un plan diamétral parallèle à celui-ci. Furthermore, the fixed frame is completed by the vertical uprights 8 and 9 placed symmetrically on either side of the movable frame 7 in a diametrical plane parallel to the latter.

A sa base le châssis comporte le berceau 10 solidaire des deux montants de guidage 4, et des montants 8 et 9, ce berceau 10 contenant le moto-réducteur électrique 11 qui actionne le tambour du treuil 12. At its base, the chassis comprises the cradle 10 integral with the two guide uprights 4, and the uprights 8 and 9, this cradle 10 containing the electric geared motor 11 which actuates the winch drum 12.

Les deux extrémités de la sangle 13 sont fixées en des points diamétralement opposés sur la périphérie du tambour 12 du treuil. La sangle 13 forme ainsi une boucle continue qui se développe dans le plan vertical passant sur les galets libres 14 et 15 situés à la base des montants 8 et 9. The two ends of the strap 13 are fixed at diametrically opposite points on the periphery of the drum 12 of the winch. The strap 13 thus forms a continuous loop which develops in the vertical plane passing over the free rollers 14 and 15 situated at the base of the uprights 8 and 9.

Elle passe ensuite sur les galets libres 16 et 17 situés au sommet des mêmes montants 8 Et 9 pour ensuite passer sous les galets libres 18 et 19 supportées par le châssis mobile 7 de la borne de part et d'autre de son axe.It then passes over the free rollers 16 and 17 located at the top of the same uprights 8 and 9 to then pass under the free rollers 18 and 19 supported by the movable frame 7 of the terminal on either side of its axis.

On comprend donc que lorsque la sangle 13 est détendue (fig 2) la borne 1 qui pose sur la boucle de cette sangle par l'intermédiaire des galets 18 et 19 du châssis mobile 7 s'abaissera par son propre poids à l'intérieur du réceptacle 3, guidée par les galets 5 et 6 coopérant avec chacun des montants 4 de part et d'autre de l'axe de la borne 1. It is therefore understood that when the strap 13 is relaxed (fig 2) the terminal 1 which rests on the loop of this strap via the rollers 18 and 19 of the movable frame 7 will lower by its own weight inside the receptacle 3, guided by the rollers 5 and 6 cooperating with each of the uprights 4 on either side of the axis of the terminal 1.

Mais la mise en rotation inverse du moto-treuil 11 provoque l'enroulement des deux extrémités de la sangle 13 sur le tambour 12 (fig 1). But the reverse rotation of the motor winch 11 causes the winding of the two ends of the strap 13 on the drum 12 (fig 1).

La boucle se tendra donc remontant la borne hors du sol, et l'y maintenant aussi longtemps que la sangle 13 reste tendue, ce que permet l'utilisation d'un moto-réducteur autobloquant 11 à vis sans fin.The loop will therefore stretch up the terminal out of the ground, and keep it there as long as the strap 13 remains taut, which allows the use of a self-locking geared motor 11 with worm.

On dispose donc ainsi d'une borne escamotable présentant un moyen de manoeuvre peu onéreux, grâce à la présence de la sangle 13 comme moyen de transmission, et d'un entretien facile, non seulement par la conception de son châssis entièrement solidaire de la platine 2 qu'il suffit donc de soulever pour extraire tout le mécanisme de son habitacle 3. There is thus a retractable terminal having an inexpensive means of maneuver, thanks to the presence of the strap 13 as a transmission means, and easy maintenance, not only by the design of its chassis fully secured to the plate 2 which therefore suffices to lift in order to extract the entire mechanism from its passenger compartment 3.

De même en cas d'envahissement de ce réceptacle par l'eau malgré l'écoulement 20 prévu à la base du réceptacle 3, l'étanchéité de l'axe du treuil 12 est plus facile à réaliser que l'étanchéité au niveau de l'écrou d'un vérin à vis, aucun dommage ne peut donc être causé au mécanisme, la sangle 13 et les galets 14,15,16,17,18 et 19 étant de plus faits de matière plastique résistante et imputrescible telle que le polyamide. Likewise, in the event that this receptacle is invaded by water despite the flow 20 provided at the base of the receptacle 3, the sealing of the axis of the winch 12 is easier to achieve than the sealing at the level of the nut of a screw jack, no damage can therefore be caused to the mechanism, the strap 13 and the rollers 14,15,16,17,18 and 19 being moreover made of resistant and rot-proof plastic material such as polyamide .

La manoeuvre est aussi des plus simples, ne nécessitant que la simple inversion du courant électrique dans l'alimentation du moto-réducteur 11. Des contacts fin-de- course haut et bas ainsi qu'un disjoncteur thermique complète l'installation et assure la sécurité. The operation is also very simple, requiring only the simple reversal of the electric current in the power supply of the gear motor 11. Up and down limit switch contacts as well as a thermal circuit breaker completes the installation and ensures the security.

L'entretien des parties mécaniques est aussi grandement facilité par le fait que le châssis qui porte tous les éléments mécaniques et qui est formé par les montants 4 d'une part et les montants 8 et 9 d'autre part est fixé pour chacun d'eux à la surface inférieure de la platine 2 qui obture le réceptacle 3 constituant un ensemble indépendant de ce dernier. The maintenance of the mechanical parts is also greatly facilitated by the fact that the chassis which carries all the mechanical elements and which is formed by the uprights 4 on the one hand and the uprights 8 and 9 on the other hand is fixed for each of them at the lower surface of the plate 2 which closes the receptacle 3 constituting an assembly independent of the latter.

Tel que représenté la borne est constituée par un fût cylindrique, mais il est précisé qu'une telle borne constituant un obstacle escamotable peut épouser toute autre forme telle qu'un parallélépipède, ou un prisme, allongée constituant des barrières de plus grande longueur, la sangle 13 dans ce cas manoeuvrant ladite borne de préférence dans son plan médian longitudinal. As shown, the terminal is constituted by a cylindrical barrel, but it is specified that such a terminal constituting a retractable obstacle can marry any other shape such as a parallelepiped, or an elongated prism constituting barriers of greater length, the strap 13 in this case operating said terminal preferably in its longitudinal median plane.

La commande peut être effectuée au moyen d'un contact à verrou situé sous la platine 2 et manoeuvrable avec une clé spéciale, ou situé à l'extérieur et relié électriquement au moteur 11. Elle peut aussi être effectuée au moyen d'un contact télécommandé et codé. The control can be carried out by means of a lock contact located under the plate 2 and operable with a special key, or located outside and electrically connected to the motor 11. It can also be carried out by means of a remote-controlled contact and coded.

Quelle que soit sa forme la borne 1 peut posséder une partie au moins de sa surface émergente, telle que 21, transparente permettant de la rendre lumineuse au moyen de tout dispositif intérieur d'éclairement électrique connu, mis sous tension lorsqu'elle est hors du sol. La dite surface transparente peut simultanément être réflectorisée. De même, peut être adjointe une source sonore interne ou extérieure, déclenchée lors de son émergence, signalant sa présence hors du sol. Whatever its shape, terminal 1 can have at least a part of its emergent surface, such as 21, which is transparent making it possible to make it luminous by means of any known internal electrical lighting device, energized when it is out of the ground. Said transparent surface can simultaneously be reflectorized. Likewise, an internal or external sound source can be added, triggered when it emerges, signaling its presence above ground.

La présente invention peut être utilisée sur toute voie publique ou privée pour barrer l'accès de façon temporaire de chaussées piétonnières ou de zones de parking ou d'entrées d'immeuble.  The present invention can be used on any public or private road to temporarily block access to pedestrian roads or to parking areas or building entrances.

Claims (9)

REVENDICATIONS 1 ) Borne escamotable motorisée pour s'opposer à la circulation de véhicules en des lieux déterminés, étant contenue dans un réceptacle incrusté dans le sol hors duquel elle est amenée à émerger au moyen d'un dispositif mécanique, caractérisée en ce que le dispositif mécanique utilisé pour assurer l'émergence de la borne (1) hors de son réceptacle (3) est la sangle (13) qui forme une boucle qui se développe dans le plan vertical et dont le brin supérieur, supporté symétriquement de part et d'autre du plan médian transversal de la borne (1) par les galets libres (16) et (17), porte ladite borne par l'intermédiaire des galets libres (18) et (19) dont est muni le châssis (7) solidaire de la borne (1) et mobile dans le plan vertical, guidé au moyen des galets (5) et (6) par les montants verticaux (4) placés dans le plan médian transversal orthogonal au plan de développement de la boucle formée par la sangle (13). 1) Retractable bollard motorized to oppose the movement of vehicles in specific places, being contained in a receptacle embedded in the ground out of which it is caused to emerge by means of a mechanical device, characterized in that the mechanical device used to ensure the emergence of the terminal (1) out of its receptacle (3) is the strap (13) which forms a loop which develops in the vertical plane and whose upper strand, symmetrically supported on both sides of the transverse median plane of the terminal (1) by the free rollers (16) and (17), carries said terminal by means of the free rollers (18) and (19) with which the chassis (7) secured to the terminal (1) and movable in the vertical plane, guided by means of the rollers (5) and (6) by the vertical uprights (4) placed in the transverse median plane orthogonal to the development plane of the loop formed by the strap (13 ). 2") Borne escamotable motorisée, selon la revendication 1, caractérisée en ce que les deux extrémités de la sangle (13), dont la boucle se développe dans le plan vertical, sont fixées, chacune de façon diamétralement opposée, sur le tambour (12) du moto-treuil électrique (11), situé à la base du réceptacle (3), fixé dans le berceau (10) qui supporte les montants (4) et les montants (8) et (9) situés réciproquement dans deux plans verticaux diamétraux orthogonaux entre eux. 2 ") Motorized retractable bollard, according to claim 1, characterized in that the two ends of the strap (13), the loop of which develops in the vertical plane, are fixed, each in diametrically opposite manner, on the drum (12 ) of the electric motor winch (11), located at the base of the receptacle (3), fixed in the cradle (10) which supports the uprights (4) and the uprights (8) and (9) located reciprocally in two vertical planes orthogonal diametric between them. 3 ) Borne escamotable motorisée, selon la revendication 2, caractérisée en ce que, au delà du tambour (12) du moto-treuil (11) les deux brins d'extrémités de la sangle (13) sont portés par les galets libres (14) et (15) qui conduisent réciproquement les brins verticaux de ladite sangle vers les galets supérieurs (16) et (17). 3) retractable motorized terminal, according to claim 2, characterized in that, beyond the drum (12) of the motor winch (11) the two ends of the strap strands (13) are carried by the free rollers (14 ) and (15) which reciprocally lead the vertical strands of said strap towards the upper rollers (16) and (17). 4 ) Borne escamotable motorisée, selon la revendication 3, caractérisée en ce que la platine (2) à travers laquelle circule librement la borne (1) supporte à sa partie inférieure l'ensemble des montants (4) et des montants (8) et (9) qui forment, avec le berceau inférieur (10), le châssis sur lequel sont montés les organes mécaniques, et qui est indépendant du réceptacle (3), ladite platine étant elle-même fixée sur sol, obturant le réceptacle (3) incrusté dans le sol. 4) retractable motorized terminal, according to claim 3, characterized in that the plate (2) through which the terminal (1) flows freely supports at its lower part all of the uprights (4) and the uprights (8) and (9) which form, with the lower cradle (10), the chassis on which the mechanical members are mounted, and which is independent of the receptacle (3), said plate itself being fixed on the ground, closing off the receptacle (3) embedded in the ground. 5") ) Borne escamotable motorisée, selon l'une quelconque des revendications précédentes, caractérisée en ce que la borne (1) est de forme générale cylindrique, étant supportée par la sangle (13) selon un plan vertical diamétral. 5 ")) Motorized retractable bollard according to any one of the preceding claims, characterized in that the bollard (1) is of generally cylindrical shape, being supported by the strap (13) along a diametrical vertical plane. 6") ) Borne escamotable motorisée, selon l'une quelconque des revendications 1 à 4, caractérisée en ce que la borne (1) est de forme générale polygonale, parallélépipédique ou prismatique, étant supportée par la sangle (13) selon un plan vertical médian longitudinal. 6 ")) Motorized retractable bollard, according to any one of claims 1 to 4, characterized in that the bollard (1) is generally polygonal, parallelepipedic or prismatic, being supported by the strap (13) in a vertical plane longitudinal median. 7") ) Borne escamotable motorisée, selon l'une quelconque des revendications 5 ou 6, caractérisée en ce qu'elle comporte une partie au moins de sa surface émergente, telle que (21), transparente, étant munie intérieurement d'un moyen d'éclairement électrique connu mis sous tension lorsqu'elle est hors du sol. 7 ")) Motorized retractable bollard according to any one of claims 5 or 6, characterized in that it comprises at least part of its emergent surface, such as (21), transparent, being provided internally with a means of known electrical lighting energized when it is above ground. 8 ) Borne escamotable motorisée, selon l'une des revendications 5 à 7, caractérisée en ce qu'elle comporte une partie au moins de sa surface émergente, telle que (21), réflectorisée. 8) Motorized retractable bollard, according to one of claims 5 to 7, characterized in that it comprises at least part of its emerging surface, such as (21), reflectorized. 9") ) Borne escamotable motorisée, selon l'une quelconque des revendications 5 à 8, caractérisée en ce que son dispositif comporte une source sonore déclenchée lors de sa manoeuvre d'émergence.  9 ")) Motorized retractable bollard according to any one of claims 5 to 8, characterized in that its device comprises a sound source triggered during its emergence maneuver.
FR9202266A 1992-02-25 1992-02-25 MOTORIZED RETRACTABLE TERMINAL. Expired - Fee Related FR2687702B1 (en)

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FR2687702B1 FR2687702B1 (en) 1994-04-22

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0597543A1 (en) * 1992-11-10 1994-05-18 T.I.F. ELETTRONICA S.r.l. Disappearing post
FR2740484A1 (en) * 1995-10-31 1997-04-30 Raison Pure Ind Securing and displacing street furniture from below ground position to above ground position
FR2776315A1 (en) * 1998-03-23 1999-09-24 Serge Videmont DEVICE FOR ALLOWING OR PREVENTING THE PASSAGE OF A VEHICLE, OF THE RETRACTABLE BOLLARD TYPE
FR2777303A1 (en) 1998-04-14 1999-10-15 Alain Antoniazzi Retractable road bollard
US6955495B1 (en) * 2002-09-10 2005-10-18 Calvin Datta Retractable delimiters for runways, roads and the like
FR2869629A1 (en) * 2004-04-29 2005-11-04 Serge Videmont Support plate for street furniture e.g. bollard, has actuator to drive flexible connection to translate carriage between top position in which furniture unit extends from case and bottom position in which unit retracts inside case
EP2267226A3 (en) * 2009-06-18 2015-09-02 Anortec, SL Driving device for a retractable bollard
US20190368218A1 (en) * 2018-05-30 2019-12-05 Thomas Arthur Shaske Solid mast raiser system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1023190A (en) * 1950-08-10 1953-03-16 A Marrel Ets Improvements to retractable bollards
WO1980002576A1 (en) * 1979-05-23 1980-11-27 Steinmanns Erben A Barrier with retractable post
DE8600135U1 (en) * 1986-01-07 1986-02-20 Griese, Klaus-Peter, 4400 Münster Automatically retractable barrier post to block off driveways, passageways, parking lots and parking spaces
EP0177895A2 (en) * 1984-10-12 1986-04-16 VOEST-ALPINE KREMS Gesellschaft m.b.H. Anti-tank barrier
WO1986003531A1 (en) * 1984-12-12 1986-06-19 Armo Gesellschaft Für Bauelmente, Bau-Und Wohnbeda Barrier post for parking lots and passageways

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1023190A (en) * 1950-08-10 1953-03-16 A Marrel Ets Improvements to retractable bollards
WO1980002576A1 (en) * 1979-05-23 1980-11-27 Steinmanns Erben A Barrier with retractable post
EP0177895A2 (en) * 1984-10-12 1986-04-16 VOEST-ALPINE KREMS Gesellschaft m.b.H. Anti-tank barrier
WO1986003531A1 (en) * 1984-12-12 1986-06-19 Armo Gesellschaft Für Bauelmente, Bau-Und Wohnbeda Barrier post for parking lots and passageways
DE8600135U1 (en) * 1986-01-07 1986-02-20 Griese, Klaus-Peter, 4400 Münster Automatically retractable barrier post to block off driveways, passageways, parking lots and parking spaces

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0597543A1 (en) * 1992-11-10 1994-05-18 T.I.F. ELETTRONICA S.r.l. Disappearing post
FR2740484A1 (en) * 1995-10-31 1997-04-30 Raison Pure Ind Securing and displacing street furniture from below ground position to above ground position
FR2776315A1 (en) * 1998-03-23 1999-09-24 Serge Videmont DEVICE FOR ALLOWING OR PREVENTING THE PASSAGE OF A VEHICLE, OF THE RETRACTABLE BOLLARD TYPE
EP0945550A2 (en) * 1998-03-23 1999-09-29 Serge Videmont Means for allowing or obstructing entrance of a vehicle, of the retractable bollard type
EP0945550A3 (en) * 1998-03-23 2000-08-09 Serge Videmont Means for allowing or obstructing entrance of a vehicle, of the retractable bollard type
FR2777303A1 (en) 1998-04-14 1999-10-15 Alain Antoniazzi Retractable road bollard
US6955495B1 (en) * 2002-09-10 2005-10-18 Calvin Datta Retractable delimiters for runways, roads and the like
FR2869629A1 (en) * 2004-04-29 2005-11-04 Serge Videmont Support plate for street furniture e.g. bollard, has actuator to drive flexible connection to translate carriage between top position in which furniture unit extends from case and bottom position in which unit retracts inside case
EP2267226A3 (en) * 2009-06-18 2015-09-02 Anortec, SL Driving device for a retractable bollard
US20190368218A1 (en) * 2018-05-30 2019-12-05 Thomas Arthur Shaske Solid mast raiser system
US10731374B2 (en) * 2018-05-30 2020-08-04 Thomas Arthur Shaske Solid mast raiser system

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