FR3042810A1 - MOTORIZED PORTAL COMPENSATION DEVICE - Google Patents
MOTORIZED PORTAL COMPENSATION DEVICE Download PDFInfo
- Publication number
- FR3042810A1 FR3042810A1 FR1502254A FR1502254A FR3042810A1 FR 3042810 A1 FR3042810 A1 FR 3042810A1 FR 1502254 A FR1502254 A FR 1502254A FR 1502254 A FR1502254 A FR 1502254A FR 3042810 A1 FR3042810 A1 FR 3042810A1
- Authority
- FR
- France
- Prior art keywords
- operator
- spring
- leaf
- motorized
- wing
- 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.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000010009 beating Methods 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 230000001133 acceleration Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
- E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
- E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
- E05F1/12—Mechanisms in the shape of hinges or pivots, operated by springs
- E05F1/1207—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring parallel with the pivot axis
- E05F1/1215—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring parallel with the pivot axis with a canted-coil torsion spring
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D7/00—Hinges or pivots of special construction
- E05D7/06—Hinges or pivots of special construction to allow tilting of the members
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
- E05F15/616—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms
- E05F15/622—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms using screw-and-nut mechanisms
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
- E05F1/02—Closers or openers for wings, not otherwise provided for in this subclass gravity-actuated, e.g. by use of counterweights
- E05F1/04—Closers or openers for wings, not otherwise provided for in this subclass gravity-actuated, e.g. by use of counterweights for wings which lift during movement, operated by their own weight
- E05F1/06—Mechanisms in the shape of hinges or pivots, operated by the weight of the wing
- E05F1/068—Mechanisms in the shape of hinges or pivots, operated by the weight of the wing with inclined pivot-axes
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
- E05F15/63—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by swinging arms
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
- E05Y2201/43—Motors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
- E05Y2600/40—Mounting location; Visibility of the elements
- E05Y2600/46—Mounting location; Visibility of the elements in or on the wing
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/40—Application of doors, windows, wings or fittings thereof for gates
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
Le dispositif selon l'invention est un mécanisme de compensation d'effort disposé entre un battant B motorisé battant B équipé d'un mécanisme appelé remonte-pente et le pilier P sur lequel il pivote. Le dispositif de compensation permet de freiner le battant B dans un des deux mouvements et au contraire de l'aider à pivoter dans l'autre mouvement d'ouverture ou de fermeture selon le sens de la pente.The device according to the invention is a force compensation mechanism disposed between a motorized wing B flapping B equipped with a mechanism called ski lift and the P pillar on which it pivots. The compensation device makes it possible to brake the leaf B in one of the two movements and, on the contrary, to help it pivot in the other opening or closing movement in the direction of the slope.
Description
DESCRIPTIONDESCRIPTION
Le dispositif selon l’invention est un mécanisme de compensation d’effort disposé sur un battant motorisé battant (B) équipé d’un mécanisme appelé remonte-pente installé de façon à permettre lors de son ouverture ou de sa fermeture l’absorption d’une pente sans qu’aucune partie du battant (B) n’entre en contact avec le sol.The device according to the invention is a force compensation mechanism arranged on a swinging motorized wing (B) equipped with a mechanism called ski lift installed so as to allow the opening or closing of the absorption of a slope without any part of the wing (B) coming into contact with the ground.
Ce mécanisme permet de s’affranchir de l’existence d’une pente qui sans la présence dudit mécanisme nommé remonte pente serait préjudiciable au pivotement du battant dont la partie basse serait rapidement en contact avec le sol.This mechanism makes it possible to overcome the existence of a slope which without the presence of said mechanism called up slope would be detrimental to the pivoting of the wing whose lower part would quickly contact the ground.
Il existe de nombreux dispositifs de remonte-pente, lesquels offrent des remontées qui peuvent aller jusqu’à 20%.There are many lift devices, which offer lifts that can go up to 20%.
Ces mécanismes sont fiabilisés dans leur fonctionnement.These mechanisms are reliable in their operation.
Ils ont malgré tout un défaut important de conception.They still have a significant design flaw.
En effet, un battant équipé d’un remonte-pente possède une inertie qui n’est pas neutre lorsqu’on ouvre ou que l’on ferme le battant.Indeed, a flap equipped with a lift has an inertia that is not neutral when opening or closing the door.
Pour la démonstration, nous considérons le battant non perturbé par une force extérieure telle qu’un vent important.For the demonstration, we consider the undisturbed wing by an external force such as a strong wind.
Dans un des deux mouvements qui comprennent une ouverture et une fermeture, le battant aura tendance à partir de lui-même en accélérant au fur et à mesure du mouvement de rotation, dans l’autre cas, il faudra exercer une poussée pour lui faire effectuer le mouvement inverse. L’importance de l’accélération et de la poussée est liée à l’importance de la pente nécessaire et du poids du portail.In one of the two movements that include an opening and a closing, the wing will tend to leave itself by accelerating as and when the rotation movement, in the other case, it will be necessary to exert a thrust to make it perform the reverse movement. The importance of acceleration and thrust is related to the importance of the required slope and the weight of the gate.
Le dispositif selon l’invention pallie cette difficulté tout en offrant une solution simple et peu onéreuse.The device according to the invention overcomes this difficulty while offering a simple and inexpensive solution.
Dispositif de compensation d’effort prévu pour minimiser la différence d’effort entre une manœuvre d’ouverture et une manœuvre de fermeture d’un battant B motorisé articulé sur un pilier P, battant B comportant un opérateur motorisé du type vérin à vis et écrou ou d’un opérateur à compas, opérateur pourvu d’un bras de manœuvre qui est confondu avec l’opérateur motorisé dans le cas d’un opérateur à vis et écrou, battant B équipé d’un mécanisme appelé remonte-pente installé de façon à permettre lors de son ouverture ou de sa fermeture l’absorption d’une pente sans qu’aucune partie du battant B n’entre en contact avec le sol, battant B considéré pour la démonstration non perturbé par une force extérieure telle qu’un vent important, battant B qui décrit un mouvement de remontée de son extrémité la plus éloignée de son axe de rotation en direction opposée au sol lors d’une manœuvre d’ouverture ou de fermeture selon le sens d’ouverture du vantail et le sens de la pente, et un mouvement de descente de son extrémité la plus éloignée de son axe de rotation en direction du sol lors d’une manœuvre d’ouverture ou de fermeture selon le sens d’ouverture du vantail et le sens de la pente, dispositif caractérisé par au moins une pièce du type ressort R disposé proche de l’articulation du bras de manœuvre de la motorisation avec le pilier P, ressort R dont une extrémité est en contact avec le pilier P ou une pièce dépendant du pilier P et l’autre extrémité avec une partie de l’opérateur motorisé ou une pièce raccordée sur celui-ci, ressort R qui exerce une force de retenue du battant B pendant la manœuvre de descente de l’extrémité battant B opposée à son axe de rotation au cours de laquelle le moteur exerce la force la plus faible, ressort qui exerce une force de poussée du battant B pendant la manœuvre de montée de l’extrémité du battant B opposée à son axe de rotation au cours de laquelle l’opérateur motorisé exerce la force la plus importante. Dispositif caractérisé en ce que l’au moins un ressort R est un ressort de torsion dont le corps cylindrique est introduit dans une entretoise cylindrique E fixée sur une partie du bâti B ou sur une pièce prévue à cet effet, ou sur une partie fixe de l’opérateur motorisé raccordée au bâti B, ressort R dont une branche d’extrémité est en appui sur une partie du bâti B ou sur une pièce prévue à cet effet, ou sur une partie fixe de l’opérateur motorisé raccordée au bâti B, la branche de l’extrémité opposée étant en appui soit directement sur une paroi du battant B soit indirectement par appui sur une partie quelconque de l’opérateur ou du bras de manœuvre ou d’une pièce El prévue à cet effet solidaire de l’opérateur.Force compensation device designed to minimize the difference in effort between an opening maneuver and a closing maneuver of a motorized wing B articulated on a pillar P, wing B comprising a motorized operator of the screw jack and nut type or operator with compass, operator provided with a maneuvering arm which is confused with the motorized operator in the case of a operator with screw and nut, flying B equipped with a mechanism called ski lift installed so when opening or closing it is possible to allow the absorption of a slope without any part of the leaf B coming into contact with the ground, beating B considered for the undisturbed demonstration by an external force such as a large wind, beating B which describes an upward movement of its end farthest from its axis of rotation in the opposite direction to the ground during an opening or closing maneuver according to the s leaf opening and the direction of the slope, and a downward movement of its end farthest from its axis of rotation towards the ground during an opening or closing maneuver according to the direction of opening of the leaf and the direction of the slope, characterized by at least one piece of the spring type R arranged close to the articulation of the operating arm of the motorization with the pillar P, spring R, one end of which is in contact with the pillar P or a part dependent on the pillar P and the other end with a part of the motorized operator or a part connected thereto, spring R which exerts a force of retaining the leaf B during the lowering maneuver of the beating end B opposite its axis of rotation during which the motor exerts the weakest force, spring which exerts a thrust force of the wing B during the raising maneuver of the end of the wing B opposite its axis of rotation during which the motorized operator exerts the greatest force. Device characterized in that the at least one spring R is a torsion spring whose cylindrical body is inserted into a cylindrical spacer E fixed on a part of the frame B or on a part provided for this purpose, or on a fixed part of the motorized operator connected to the frame B, a spring R whose end branch is resting on a part of the frame B or on a part provided for this purpose, or on a fixed part of the motorized operator connected to the frame B, the branch of the opposite end being supported either directly on a wall of the wing B or indirectly by pressing on any part of the operator or the operating arm or a piece El provided for this purpose secured to the operator .
Dispositif caractérisé en ce que l’axe de l’entretoise E qui porte l’au moins un ressort R est confondu avec l’axe d’articulation de l’extrémité du bras de manœuvre de l’opérateur avec la partie fixe de l’opérateur ou dans le cas d’un opérateur à vis et écrou directement avec l’axe d’articulation XB de l’extrémité EX dudit opérateur la plus proche du bâti B avec une platine PA fixée sur le bâti B.Device characterized in that the axis of the spacer E which carries the at least one spring R coincides with the axis of articulation of the end of the operating arm of the operator with the fixed part of the operator or in the case of an operator screw and nut directly with the axis of articulation XB of the EX end of said operator closest to the frame B with a plate PA fixed on the frame B.
Dispositif caractérisé en ce que le nombre de ressort et la puissance de chacun des ressorts de torsion est fonction de la pente du battant B et du poids de celui-ci afin de calibrer l’effort au plus près des contraintes liées à la géométrie et au poids du battant B. D’autres buts et avantages de l’invention apparaîtront mieux dans la description détaillée qui suit et qui se réfère aux dessins annexés, donnés uniquement à titre d’exemple, et dans lesquels : - La figure 1 est une vue de face du battant B équipé du dispositif selon l’invention - La figure 2 est une vue de détail en perspective du dispositif selon l’invention.Device characterized in that the number of springs and the power of each of the torsion springs is a function of the slope of the leaf B and the weight thereof in order to calibrate the force as close as possible to the constraints related to the geometry and to the weight of the wing B. Other objects and advantages of the invention will become more apparent in the detailed description which follows and which refers to the accompanying drawings, given solely by way of example, and in which: FIG. 1 is a view FIG. 2 is a detailed perspective view of the device according to the invention.
Suivant un exemple de réalisation et se référant à la figure 1, le dispositif selon l’invention est un mécanisme de compensation d’effort installé sur un battant B motorisé pourvu d’un système appelé remonte-pente prévu pour permettre l’installation du battant B sur un terrain en pente.According to an exemplary embodiment and referring to Figure 1, the device according to the invention is a force compensation mechanism installed on a motorized leaf B provided with a system called ski lift provided to allow the installation of the leaf B on a sloping ground.
Un pilier P supporte un battant B équipé d’un remonte-pente.A pillar P supports a wing B equipped with a ski lift.
Dans notre exemple, le terrain remonte dans la propriété et le battant s’ouvre vers l’intérieur de la propriété.In our example, the land rises in the property and the door opens to the interior of the property.
Un tel battant B est équipé d’une motorisation du type vérin dont la fixation au moins avec le pilier est prévue pour portail avec remonte-pente.Such a wing B is equipped with a motorization type jack whose attachment at least with the pillar is provided for portal with lift.
Dans notre exemple, une platine PA est fixée sur le pilier P.In our example, a plate PA is fixed on the pillar P.
Une des extrémités de la motorisation du type vérin est articulée sur la platine PA par le biais d’une rotule sphérique, ce qui permet à la motorisation de pouvoir avoir un léger mouvement de rotation afin de suivre la montée ou la descente du battant B, lequel battant B suit sensiblement le pourcentage de pente du terrain. L’autre extrémité du vérin est fixé sur une chape qui est elle-même articulée afin de permettre audit vérin une poussée sans porte à faux ni forçage lié à la position différenciée du battant en fonction de la course qui passe d’un plan vertical lorsque le battant est fermé à un plan angulaire lorsque le battant B est ouvert, avec de surcroît une hauteur différenciée entre le montant vertical proche des gonds et le montant opposé qui se trouve très relevé lorsque le battant B est ouvert.One end of the engine type actuator is articulated on the plate PA by means of a spherical ball joint, which allows the engine to be able to have a slight rotational movement to follow the rise or fall of the wing B, which flap B substantially follows the slope percentage of the ground. The other end of the jack is fixed on a yoke which is itself hinged to allow said cylinder a thrust without overhang or forcing related to the differentiated position of the wing according to the stroke that passes from a vertical plane when the leaf is closed at an angular plane when the leaf B is open, with moreover a differentiated height between the vertical amount close to the hinges and the opposite amount which is very raised when the leaf B is open.
La rotule est pourvue d’une tige filetée qui est introduite dans un orifice d’une partie horizontale de la platine PA.The ball is provided with a threaded rod which is inserted into an orifice of a horizontal portion of the plate PA.
Selon l’invention, une douille taraudée E est disposée sous la partie horizontale de la platine PA, douille E vissée avec la tige filetée de la rotule afin de l’immobiliser sur la platine PA.According to the invention, a threaded bushing E is disposed under the horizontal part of the plate PA, bushing E screwed with the threaded rod of the ball to immobilize it on the plate PA.
La douille E reçoit un ressort de torsion R terminé par deux branches B1 et B2 est maintenu en position par une rondelle RD et une vis dont le filetage coopère avec le taraudage de la douille E.Bushing E receives a torsion spring R terminated by two branches B1 and B2 is held in position by a washer RD and a screw whose thread cooperates with the thread of bushing E.
La branche B1 vient prendre appui sur une douille El qui est fixée sur une partie de l’extrémité EX du vérin, l’autre branche B2 vient prendre appui sur une douille E2 fixée sur la partie horizontale de la platine PA.The branch B1 comes to rest on a bushing El which is fixed on a portion of the end EX of the cylinder, the other branch B2 bears on a bushing E2 fixed on the horizontal part of the plate PA.
Les deux branches B1 et B2 sont alors sous contrainte quelle que soit la position du battant B.The two branches B1 and B2 are then under stress whatever the position of the wing B.
Ainsi disposé le ressort R freine le battant lorsque celui-ci est en phase de fermeture et il aide le battant B en exerçant une pression lorsque celui-ci est en phase de fermeture.Thus arranged the spring R brakes the leaf when it is in the closing phase and it helps the leaf B by exerting pressure when it is in the closing phase.
Le ressort R est calibré en fonction d’une part du poids du portail et d’autre part en fonction du pourcentage de pente à observer.The spring R is calibrated according to a part of the weight of the gate and secondly according to the percentage of slope to be observed.
Nous avons ainsi réalisé un dispositif conforme à l’invention.We have thus produced a device according to the invention.
Bien entendu, l’invention n’est nullement limitée aux modes de réalisation décrits et représentés qui n’ont été donnés qu’à titre d’exemple. L’invention comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons, si celles-ci sont exécutées suivant son esprit et mises en œuvre dans le cadre des revendications qui suivent.Of course, the invention is not limited to the embodiments described and shown which have been given by way of example. The invention comprises all the technical equivalents of the means described and their combinations, if they are executed according to its spirit and implemented in the context of the following claims.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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FR1502254A FR3042810A1 (en) | 2015-10-23 | 2015-10-23 | MOTORIZED PORTAL COMPENSATION DEVICE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1502254A FR3042810A1 (en) | 2015-10-23 | 2015-10-23 | MOTORIZED PORTAL COMPENSATION DEVICE |
Publications (1)
Publication Number | Publication Date |
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FR3042810A1 true FR3042810A1 (en) | 2017-04-28 |
Family
ID=55345872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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FR1502254A Pending FR3042810A1 (en) | 2015-10-23 | 2015-10-23 | MOTORIZED PORTAL COMPENSATION DEVICE |
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FR (1) | FR3042810A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2545528A1 (en) * | 1983-05-03 | 1984-11-09 | Viallard Rene | Pivoting fence door operating on sloping ground |
US6935000B1 (en) * | 2000-11-22 | 2005-08-30 | Roger R. Arnaud | Gate hinge and method for mounting gate opener |
FR2941738A1 (en) * | 2009-02-02 | 2010-08-06 | Antoine Piva | Mechanical balancing device for opening e.g. motorized metallic gate leaf to permit accessing of vehicle, has clamp-slides sliding on guide column that is fixed on ground by case and is fixed to upper part of post by collar flange |
US20110302841A1 (en) * | 2010-06-14 | 2011-12-15 | Hangzhou Sanford Tools Co., Ltd. | Swing gate operator |
-
2015
- 2015-10-23 FR FR1502254A patent/FR3042810A1/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2545528A1 (en) * | 1983-05-03 | 1984-11-09 | Viallard Rene | Pivoting fence door operating on sloping ground |
US6935000B1 (en) * | 2000-11-22 | 2005-08-30 | Roger R. Arnaud | Gate hinge and method for mounting gate opener |
FR2941738A1 (en) * | 2009-02-02 | 2010-08-06 | Antoine Piva | Mechanical balancing device for opening e.g. motorized metallic gate leaf to permit accessing of vehicle, has clamp-slides sliding on guide column that is fixed on ground by case and is fixed to upper part of post by collar flange |
US20110302841A1 (en) * | 2010-06-14 | 2011-12-15 | Hangzhou Sanford Tools Co., Ltd. | Swing gate operator |
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