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EP2516778B1 - Absperrvorrichtung und entsprechende baugruppe - Google Patents

Absperrvorrichtung und entsprechende baugruppe Download PDF

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Publication number
EP2516778B1
EP2516778B1 EP10810861.4A EP10810861A EP2516778B1 EP 2516778 B1 EP2516778 B1 EP 2516778B1 EP 10810861 A EP10810861 A EP 10810861A EP 2516778 B1 EP2516778 B1 EP 2516778B1
Authority
EP
European Patent Office
Prior art keywords
base body
frame
closure device
assembly according
wall
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.)
Active
Application number
EP10810861.4A
Other languages
English (en)
French (fr)
Other versions
EP2516778A2 (de
Inventor
Jean-Claude Royer
Vincent Rotharmel
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.)
Saint Gobain PAM Canalisation SAS
Original Assignee
Saint Gobain PAM Canalisation SAS
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 Saint Gobain PAM Canalisation SAS filed Critical Saint Gobain PAM Canalisation SAS
Publication of EP2516778A2 publication Critical patent/EP2516778A2/de
Application granted granted Critical
Publication of EP2516778B1 publication Critical patent/EP2516778B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • E05F1/1091—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 with a gas spring
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D3/00—Hinges with pins
    • E05D3/02—Hinges with pins with one pin
    • E05D3/022—Hinges with pins with one pin allowing an additional lateral movement, e.g. for sealing
    • 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
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/146—Shutters

Definitions

  • these cover devices include a frame and a cover adapted to be toggled between open and closed positions.
  • the known devices are equipped with an assistance jack.
  • the cylinder is fixed on the one hand to the buffer and on the other hand to the frame. The cylinder, compressed between the frame and the buffer, pushes on the frame in order to assist in the opening of the buffer.
  • Attaching the ram to the frame and buffer is usually done using pins or bolts that are difficult to mount. Furthermore, the manufacture of such devices is difficult and costly due to the use of numerous mechanical elements which often have to be welded or molded.
  • the object of the invention is to provide a closure device which makes the manufacture, installation and removal of the plug simpler and more economical.
  • the assembly comprises the characteristics corresponding to claim 2.
  • the invention also relates to an assembly according to claim 3.
  • the assembly comprises the characteristics corresponding to claims 4 to 13.
  • assembly 2 is illustrated very schematically in order to explain the principle of operation.
  • Set 2 comprises a frame 3 sealed at the top of an underground chamber 4 and a closing device 6.
  • Set 2 is for example a manhole or an access hatch to an underground chamber, such as a telecommunications chamber.
  • the frame 3 delimits an opening 8, for example square or circular, and, in the present case, its inner edge is aligned with an inner wall 10 of the chamber 4, the wall 10 thus forming a surrounding wall of the opening. 8 to be sealed.
  • the opening 8 extends in an opening plane PP, which in the installed state is parallel to the ground.
  • the wall 10 extends substantially perpendicular to the opening plane PP.
  • the frame 3 and the shutter device 6 comprise a first and a second hinges 12, 14 (see figures 5 and 6 ).
  • the first hinge 12 consists of two cooperating knuckles 16, 18 and the second hinge 14 consists of two cooperating knuckles 20, 22.
  • the closure device 6 comprises a base body 30 adapted to close the opening 8.
  • the base body 30 is for example a plug or a grid.
  • the base body 30 extends substantially along a PC-PC base body plane.
  • the hinges 12, 14 are adapted to allow a tilting of the base body 30, or of the shutter device 6, relative to the frame 3 around a first axis of tilting XX between a completely open position, represented on the figure 1 , an open position, represented on the figure 2 , an intermediate position, represented on the picture 3 and a closed position shown on the figure 4 .
  • the first and second hinges 12, 14 are also adapted to allow tilting of the shutter device 6 with respect to the frame 3 around a second tilting axis YY between a release position ( figure 5 ) and a blocking position ( figure 6 ), and this when the base body 30, or the closure device 6, is in its open or completely open position.
  • the second tilting axis YY extends perpendicular to the first tilting axis XX.
  • the second pivot axis YY extends substantially in the opening plane PP.
  • the first hinge 12 has a degree of freedom of rotation of the closure device 6 around the second tilting axis YY with respect to the frame 3.
  • the second hinge 14 comprises means for locking the locking device. shutter 6 in the open position of the picture 2 .
  • These blocking means are for example formed by a recess 20A made in the frame knuckle 20 of the second hinge and receiving the knuckle 22 of the closure device. In the blocking position, a tilting of the base body 30 towards the intermediate or closed position is prevented, while in the release position the base body 30 can be tilted into its closed position.
  • the base body plane PC-PC In the closed position, the base body plane PC-PC is substantially parallel to the plane PP (see figure 4 ), and in the intermediate position, the basic body plane PC-PC is inclined with respect to the plane PP by approximately 60° to 85°. In the open position ( picture 2 ) the basic body plane PC-PC is inclined by 90° with respect to the plane PP. In the fully open position ( figure 1 ) the basic body plane PC-PC is inclined by approximately 100 to 105° with respect to the plane PP.
  • the shutter device 6 further comprises a fixing projection 32 fixed to the base body 30 and extending substantially perpendicularly with respect to the plane of the base body PC-PC.
  • the shutter device 6 is provided with a thrust element 34 having a first 36 and a second 38 ends.
  • the thrust element 34 is for example a jack, in particular a gas jack, or a spring, in particular a helical spring.
  • the thrust element 34 has a relaxed configuration in which its two ends 36, 38 are remote from each other and a tensioned configuration in which its two ends 36, 38 are close to each other, compared in the relaxed configuration.
  • the force exerted by the thrust element 34 is greater in the tensioned configuration than in the relaxed configuration.
  • the thrust element 34 In the closed position of the base body 30, the thrust element 34 is in its tensioned configuration and in the open position, the thrust element 34 is in its relaxed configuration.
  • the first end 36 of the thrust element 34 is hinged to the attachment projection 32 by a first hinge 40 about a first hinge axis A-A.
  • the first end 36 is therefore connected to the base body 30, and this via this articulation 40 and the fixing projection 32.
  • the shutter device 6 further comprises a connecting element 42.
  • the second end 38 of the thrust element 34 is connected to this connecting element 42 by a second articulation 44 around a second articulation axis B-B.
  • the connecting element 42 is connected to the base body 30 by a third articulation 46 around a third articulation axis C-C.
  • the three hinge axes A-A, B-B and C-C of joints 40, 44, 46 are parallel to each other and are not coplanar. In other words, in section along a plane perpendicular to the axes of articulation A-A, B-B and C-C, these three axes form a triangle.
  • Each joint 40, 44, 46 has a single degree of freedom of rotation, but no other degree of freedom.
  • the connecting element 42 has ends on which the second and third joints 44, 46 are arranged.
  • the connecting element 42 is hinged to the base body 30 between two limit positions.
  • the first limit position corresponds to the relaxed configuration of the thrust element 34 or to the open position of the base body 30 (see figures 1 and 2 ).
  • the second limit position corresponds to the tensioned configuration of the thrust element 34 when the base body is in the closed position (see figure 4 ).
  • the connecting element 42 is therefore a connecting rod.
  • the connecting element 42 is adapted to pivot between its two limit positions when the thrust element 34 is brought from the tensioned configuration to the relaxed configuration and vice versa.
  • the connecting element 42 is also adapted to guide the second end 38 of the thrust element 34 during movement of the base body 30 between the open position and the closed position.
  • the closure device 6 further comprises a support member 50 adapted to rest on the inner wall 10 of the opening 8 during movement of the base body 30 between the closed position and the intermediate position.
  • This support member 50 is in the present case formed by a bent portion of the connecting element 42.
  • the closure device 6, consisting of the base body 30, the thrust element 34 and the connecting element 42 constitutes an autonomous module that can be manipulated in a single block in the absence of the frame. 3.
  • the obturation device 6 assumes the configuration shown in the figures 1 and 2 , corresponding to the open or completely open position of the base body 30.
  • Assembly 2 according to the invention operates as follows.
  • the closure device 6 is in the completely open and release position.
  • the thrust element 34 is in its relaxed configuration.
  • the connecting element 42 is in the first limit position.
  • the support member 50 of the connecting element 42 is out of contact with the wall 10.
  • the closure device 6 is tilted around the tilting axis XX relative to the frame 3 in the closing direction, namely in the clockwise direction of the figure 1 .
  • the shutter device 6 therefore reaches the open position which is shown on the figure 2 .
  • the base body plane PC-PC is arranged at 90° to the plane PP.
  • the support member 50 is still out of contact with the wall 10.
  • the closure device 6 assumes the intermediate configuration in which the support member 50 comes into contact with the wall 10 ( picture 3 ).
  • the application of the support member 50 on the wall 10 induces a rotation of the connecting member 42 around the hinge axis CC and compresses the thrust element 34 which is therefore brought to its stretched configuration.
  • the force exerted by the thrust element 34 on the connecting element 42 induces at the point of contact of the support member 50 with the wall 10 a reaction force which goes against the force of gravity of the shutter device 6, this reaction force applied via the wall 10 on the connecting element 42.
  • the thrust element 34 and the connecting element 42 therefore prevent or slow down closing of the closure device under the sole action of the force of gravity between the intermediate position and the closed position of the basic body.
  • the manual force required to operate the shutter device 6 is therefore relatively low. This manual force is a function of the thrust element 34 used and more precisely of its thrust capacity.
  • the base body 30 In order to open the assembly, the base body 30 is tilted by the user towards its open position. Between the closed position and the intermediate position, the force exerted by the thrust element 34 and transmitted by the connecting element 42 to the wall 10, induces at the level of the wall 10 a reaction force which opposes the own weight of the base body and therefore makes it possible to considerably reduce the force necessary for opening the closure device 6. During this tilting, the thrust element 34 relaxes.
  • the connecting element 42 and the support member 50 lose contact with the wall 10 and the closure device 6 is tilted under the sole action of the user's force in its position. completely open, passing through the open position for releasing the figure 5 .
  • the closure device 6, consisting of the base body 30, the thrust element 34 and the connecting element 42, constitutes an autonomous module that can be manipulated in a single block, the frame 3 and the shutter device 6 can be manufactured and installed separately. Thus, unskilled labor is sufficient to mount the shutter device 6 in the frame 3 on the installation site of the assembly 2.
  • the device 6 is easily usable to equip frames 3 already existing and installed. Also, the installation or removal of the closure device 6 is easy and without risk because these operations are carried out without having to intervene on the thrust element 34 insofar as the latter is not fixed to the frame.
  • the combination of the shutter device 6 and the hinges 12, 14 allowing locking by tilting around the tilting axis YY is particularly advantageous, given that no articulation of the end 38 of the thrust element 34 at the frame 3 is not necessary.
  • the Figure 7 and 9 to 11 correspond to Figures 1 to 4 .
  • the Figure 8 is a perspective view of assembly 2 in the fully open position.
  • the shutter device 6 comprises a base body 30 and a fixing projection 32 which are manufactured in two separate and assembled parts.
  • the fixing projection 32 is fixed by a shape-locking connection to the base body 30. This connection is preferably a bayonet-type connection.
  • the connecting element 42 comprises a central core 60 and two lateral flanges 62, 64.
  • the free end of the lateral wing 62 carries a cylindrical end piece 66 defining an end piece axis C1-C1.
  • the end piece 66 consists of two half-end pieces which extend from one side and the other of the side wing 62.
  • the lateral wing 62 also carries a cylindrical stop 68 which cooperates with the underside of the base body 30 in order to ensure the maintenance and the rotational guidance of the end piece 66 during the pivoting of the connecting element 42 around of the C1-C1 axis.
  • the lateral wing 64 carries at its free end a hinge orifice 70 adapted to be hinged to the end 38 of the thrust element 34 and defining the hinge axis B-B.
  • the junction zone between the lateral wing 64 and the central core 60 forms the support member 50.
  • the Figures 12 to 14 show the assembly operation of the connecting element 42 in the base body 30.
  • the base body 30 comprises a housing 80 adapted to receive the cylindrical end piece 66.
  • the connecting element 42 is aligned with the housing 80 such that the tip axis C1-C1 is angularly offset from the hinge axis CC.
  • the tip 66 is introduced into the housing 80 by a movement perpendicular to the plane PC-PC and followed by a rotation around an axis of rotation RR extending perpendicular to the plane PC-PC ( figure 13 ), until the tip axis C1-C1 is aligned with the tilt axis CC ( figure 14 ).
  • the assembly is therefore particularly easy and is carried out without tools and without further components, such as pins.
  • the mounting projection 32 is connected to the base body according to the same principle and the thrust element 34 is connected via the joint 40 to the projection 32 and via the joint 44 to the hole 70 of the element. link 42.
  • the connecting element 42 is provided with adjustment means to adapt to a chamber whose wall 10 is recessed with respect to the frame 3, the adjustment means then allowing the support member 50 to come into contact with the wall 10 when the base body 30 is in an angular position between the closed position and the intermediate position.
  • the support member 50 can come directly into contact with this vertical wall of the frame and not with a wall 10 of the underground chamber.
  • the rigid connecting element 42 described above could be replaced by a flexible connecting element such as for example a cable, a rope or a chain.
  • a flexible connecting element such as for example a cable, a rope or a chain.
  • it is the end 38 of the thrust element 34 which bears against the wall 10 when the base body is located between the closed position and the intermediate position. It is then no longer necessary to connect this flexible connecting element to the base body and to the thrust element by joints.

Landscapes

  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Hinges (AREA)
  • Sealing Devices (AREA)
  • Closures For Containers (AREA)
  • Lock And Its Accessories (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Claims (13)

  1. Anordnung, umfassend einen Rahmen (3) und eine Verschlussvorrichtung (6), wobei der Rahmen eine Öffnung (8) begrenzt, die eine umgebende Wand (10) aufweist, die Verschlussvorrichtung (6) umfassend:
    - einen Grundkörper (30), der angepasst ist, um die Öffnung (8) zu verschließen und in dem Rahmen (3) zwischen einer Öffnungsposition und eine Schließposition beweglich ist,
    - ein Schubelement (34), das ein erstes (36) und ein zweites (38) Ende aufweist und eine entspannte Konfiguration und eine gespannte Konfiguration aufweist, wobei das erste Ende (36) des Schubelements mit dem Grundkörper (30) verbunden ist,
    dadurch gekennzeichnet, dass die Verschlussvorrichtung ferner ein Verbindungselement (42), das mit dem Grundkörper (30) und dem zweiten Ende (38) des Schubelements verbunden ist, sowie ein Stützorgan (50) umfasst, das von dem Verbindungselement (42) getragen wird und angepasst ist, um bei einer Verschiebung des Grundkörpers (30) zwischen der Schließposition und der Öffnungsposition und umgekehrt an der umgebenden Wand (10) der Öffnung (8) anzuliegen, einer Verschiebung, bei der das Verbindungselement (42) es dem Schubelement (34) ermöglicht, von der gespannten Konfiguration in die entspannte Konfiguration und umgekehrt überzugehen, wobei das Stützorgan (50) ferner angepasst ist, um außer Kontakt mit der Wand (10) der Öffnung (8) zu sein, wenn der Grundkörper (30) in der Öffnungsposition ist, und in Kontakt mit der Wand (10) zu sein, wenn der Grundkörper (30) in einer Zwischenposition ist.
  2. Anordnung nach Anspruch 1, dadurch gekennzeichnet, dass das Verbindungselement (42) ein Schwingarm ist.
  3. Anordnung, umfassend einen Rahmen (3) und eine Verschlussvorrichtung (6), wobei der Rahmen eine Öffnung (8) begrenzt, die eine umgebende Wand (10) aufweist, die Verschlussvorrichtung (6) umfassend:
    - einen Grundkörper (30), der angepasst ist, um die Öffnung (8) zu verschließen und in dem Rahmen (3) zwischen einer Öffnungsposition und eine Schließposition beweglich ist,
    - ein Schubelement (34), das ein erstes (36) und ein zweites (38) Ende aufweist und eine entspannte Konfiguration und eine gespannte Konfiguration aufweist, wobei das erste Ende (36) des Schubelements mit dem Grundkörper (30) verbunden ist,
    dadurch gekennzeichnet, dass die Verschlussvorrichtung ferner ein flexibles Verbindungselement (42), beispielsweise ein Kabel, ein Seil oder eine Kette umfasst, wobei das Verbindungselement (42) mit dem Grundkörper (30) und dem zweiten Ende (38) des Schubelements verbunden ist, sowie ein Stützorgan (50), das von dem zweiten Ende (38) gebildet und angepasst ist, um bei einer Verschiebung des Grundkörpers (30) zwischen der Schließposition und der Öffnungsposition und umgekehrt an der umgebenden Wand (10) der Öffnung (8) anzuliegen, einer Verschiebung, bei der das Verbindungselement (42) es dem Schubelement (34) ermöglicht, von der gespannten Konfiguration in die entspannte Konfiguration und umgekehrt überzugehen, wobei das Stützorgan (50) ferner angepasst ist, um außer Kontakt mit der Wand (10) der Öffnung (8) zu sein, wenn der Grundkörper (30) in der Öffnungsposition ist, und in Kontakt mit der Wand (10) zu sein, wenn der Grundkörper (30) in einer Zwischenposition ist.
  4. Anordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Verbindungselement (42) angepasst ist, um das zweite Ende (38) des Schubelements (34) zu führen, wenn der Grundkörper zwischen der Öffnungsposition und der Schließposition verschoben wird.
  5. Anordnung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das erste Ende (36) des Schubelements (34) durch ein erstes Gelenk (40) um eine erste Gelenkachse (A-A) mit dem Grundkörper (30) verbunden ist.
  6. Anordnung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das zweite Ende (38) des Schubelements (34) über ein zweites Gelenk (44) um eine zweite Gelenkachse (B-B) mit dem Verbindungselement (42) verbunden ist.
  7. Anordnung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das Verbindungselement (42) über ein drittes Gelenk (46) um eine dritte Gelenkachse (C-C) mit dem Grundkörper (30) verbunden ist.
  8. Anordnung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Verschlussvorrichtung (6) ein eigenständiges handhabbares Modul aus einem Block darstellt.
  9. Anordnung nach einem der vorherigen Ansprüche, die von dem Anspruch 1 abhängig sind, dadurch gekennzeichnet, dass zwischen der Zwischenposition des Grundkörpers und der Schließposition die umgebende Wand (10) eine Reaktionskraft auf das Verbindungsorgan (42) ausübt, wobei die Reaktionskraft gegen eine von dem Schubelement (34) ausgeübte Kraft gerichtet ist.
  10. Anordnung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Rahmen (3) und die Verschlussvorrichtung (6) mindestens ein erstes Scharnier (12) aufweisen, das angepasst ist, um ein Kippen des Grundkörpers (30) in Bezug auf den Rahmen zwischen seiner Öffnungs- und Schließposition um eine erste Kippachse (X-X) zu ermöglichen.
  11. Anordnung nach Anspruch 10, dadurch gekennzeichnet, dass das erste Scharnier (12) angepasst ist, um eine Verschiebung der Verschlussvorrichtung in Bezug auf den Rahmen in eine Sperrposition zu ermöglichen, zumindest wenn der Grundkörper in seiner offenen Position ist, wobei in der Sperrposition ein Kippen des Grundkörpers in die Schließposition blockiert ist.
  12. Anordnung nach Anspruch 11, dadurch gekennzeichnet, dass die Verschiebung in die Sperrposition ein Kippen des Grundkörpers (30) um eine zweite Kippachse (Y-Y) ist, und, dass die zweite Kippachse (Y-Y) sich im Wesentlichen senkrecht zu der ersten Kippachse (X-X) erstreckt.
  13. Anordnung nach Anspruch 12, dadurch gekennzeichnet, dass der Rahmen (3) und die Verschlussvorrichtung (6) ein zweites Scharnier (14) umfassen, das angepasst ist, um ein Kippen des Grundkörpers zwischen seiner Öffnungs- und Schließposition um die erste Kippachse (X-X) zu ermöglichen, wobei das zweite Scharnier ein Scharnier (22) der Verschlussvorrichtung und ein Scharnier (20) des Rahmens umfasst, und, dass das Blockieren des zweiten Scharniers (14) durch Eingriff des Scharniers (22) der Verschlussvorrichtung in eine Aussparung (20A) des Scharniers (20) des Rahmens erlangt wird.
EP10810861.4A 2009-12-24 2010-12-21 Absperrvorrichtung und entsprechende baugruppe Active EP2516778B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0959595A FR2954794B1 (fr) 2009-12-24 2009-12-24 Dispositif d'obturation et ensemble correspondant
PCT/FR2010/052847 WO2011077033A2 (fr) 2009-12-24 2010-12-21 Dispositif d'obturation et ensemble correspondant

Publications (2)

Publication Number Publication Date
EP2516778A2 EP2516778A2 (de) 2012-10-31
EP2516778B1 true EP2516778B1 (de) 2022-06-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10810861.4A Active EP2516778B1 (de) 2009-12-24 2010-12-21 Absperrvorrichtung und entsprechende baugruppe

Country Status (7)

Country Link
US (1) US8677691B2 (de)
EP (1) EP2516778B1 (de)
CN (1) CN102791949B (de)
ES (1) ES2923667T3 (de)
FR (1) FR2954794B1 (de)
RU (1) RU2531744C2 (de)
WO (1) WO2011077033A2 (de)

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CN2685495Y (zh) * 2004-02-20 2005-03-16 华峰密机厂有限公司 气压铰链
US7290370B2 (en) * 2004-07-09 2007-11-06 Smith & Loveless, Inc. Assist mechanism for lifting and closing large enclosures
US20060236610A1 (en) * 2005-04-22 2006-10-26 East Jordan Iron Works, Inc. Cast hatch with lift assist
CN2846512Y (zh) * 2005-07-28 2006-12-13 卞紫涵 一种新型井盖
US7638962B2 (en) * 2006-04-14 2009-12-29 Michael Cardwell Hatch cover manager
CA2639433A1 (en) * 2008-04-18 2009-10-18 Howard George Lough Safety gate
US8166706B2 (en) * 2009-06-08 2012-05-01 U.S.F. Fabrication, Inc. Multipositional vault door

Also Published As

Publication number Publication date
WO2011077033A3 (fr) 2011-11-03
WO2011077033A2 (fr) 2011-06-30
EP2516778A2 (de) 2012-10-31
CN102791949B (zh) 2015-10-07
RU2012131519A (ru) 2014-01-27
CN102791949A (zh) 2012-11-21
FR2954794A1 (fr) 2011-07-01
US8677691B2 (en) 2014-03-25
ES2923667T3 (es) 2022-09-29
RU2531744C2 (ru) 2014-10-27
US20120317885A1 (en) 2012-12-20
FR2954794B1 (fr) 2013-07-26

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