Container door for sealed transfer system

Abstract

The container door (30) comprises a cylindrical body (31) along a main axis of rotation (Ax), the body (31) further defining a cylindrical blind end recess (32) having a main axis (Ax) and opening at a front face (33) thereof, the recess (32) comprising a wall (34), a set of inner lugs radially projecting from the wall (34) being able to form an internal bayonet connection, the container door (30) further comprising a plate (40) mounted to be rotatable relative to the body (31) about the main axis (Ax), according to the invention, the plate (40) comprises a set of outer lugs projecting radially from its periphery, capable of forming an external bayonet connection, the container door (30) being equipped with means (43) for rotationally coupling to the plate (40), accessible from the front face (33).

Description

Technical Field

[0001] The present invention relates to the sealed transfer of objects from a sealed container to a sealed chamber using a double door connection system. Background Art

[0002] In many industrial fields, operations are carried out in closed environments to protect the environment, for example, from radioactive or toxic influences, or to perform these operations in a sterile environment.

[0003] The objects are transferred from the container to the sealed chamber without destroying the seal using a double door connection device, such as those known from documents FR2695343 and US8950624.

[0004] Such an apparatus can be used to package pharmaceuticals: a filling line is then installed in the sealing chamber, and small-sized objects such as bottle caps are transferred into the sealing chamber to feed the line.

[0005] The sealing chamber is provided with a flange which is sealed from the inside by a sealing chamber door mounted on hinges of the flange, and the container is, for example, a bag, wherein the opening is provided with another flange provided with a container door.

[0006] The container door generally comprises a cylindrical main body along the main axis, with a central cylindrical recess defined by a peripheral wall and an inner lug protruding radially inwards to form a bayonet connection.

[0007] The connection consists of the following steps: engaging the flange of the container with the flange of the sealing chamber and rotating the flange of the container around itself, which has the following effects:

[0008] - connecting the two flanges to each other by engaging a first bayonet connection or a flange-flange connection;

[0009] - connecting the two doors to each other by engaging a second bayonet connection or a door-to-door connection via an inner lug;

[0010] - Separate the container door from the container flange by disconnecting the third bayonet connection or the flange-door connection.

[0011] Once connected, the seal chamber door is pivoted inwards to open it: the vessel door is then rigidly connected to the seal chamber door via the door-to-door connection and moves together with the seal chamber door to remove it from the vessel flange.

[0012] When the object is transferred, the sealing chamber door can be folded back to the opening carrying the container door.

[0013] The container then rotates itself in the opposite direction, with the following effect:

[0014] -Secure the container door to the container flange;

[0015] - Disconnect the container door from the sealing chamber door;

[0016] - Disconnect the container door from the seal chamber flange.

[0017] In this arrangement, the operator must apply considerable force to pivot the container and its flange relative to the sealing chamber flange, thereby connecting or disconnecting them. This operation requires overcoming the friction and actuation forces of the various bayonet connections and their corresponding seals, allowing the container to be pivoted through a significant range of angles. Repeated application of this force can fatigue the operator, creating a risk of repetitive strain injury.

[0018] The object of the present invention is to provide a solution to remedy this drawback. Summary of the Invention

[0019] To this end, the present invention provides a container door comprising a cylindrical body along a main axis of rotation, the body also defining a cylindrical blind-end recess along the main axis, the recess being open on its front face, the recess comprising a wall with a set of radially projecting inner lugs capable of forming an inner bayonet connection. According to the invention, the door further comprises a plate rotatably mounted relative to the body about the main axis, the plate comprising a set of radially projecting outer lugs from its circumference capable of forming an outer bayonet connection, the door being equipped with means for rotatably coupling to the plate, accessible from the front face.

[0020] According to specific, non-exclusive and optional embodiments of the present invention:

[0021] The coupling means comprise an imprint intended to cooperate with a corresponding profile in order to transmit a rotational torque about the main axis.

[0022] - the embossing includes a quadrilateral pattern;

[0023] - the door comprises means for locking the plate to prevent it from rotating about the main axis relative to the cylindrical body;

[0024] - the locking device comprises a pin slidably mounted in a recess of the cylindrical body, one end of which engages in stages in a port of the coupling device;

[0025] - the coupling device comprises at least one stop extending in a groove at least partially delimited by a bottom of the recess, a wall of the recess and at least one inner lug of a set of inner lugs;

[0026] - the coupling device comprises four stops extending in a groove and rigidly connected to arms extending diametrically in the recess;

[0027] - the door includes means for returning the plate to the body;

[0028] - the return means comprises an elastic element;

[0029] - the outer lug comprises means for locking the outer bayonet connection;

[0030] The locking member comprises an axially recessed notch and / or an axially protruding protrusion.

[0031] - the body comprises means for locking the body to prevent it from rotating about the main axis;

[0032] - the locking means comprises a protrusion protruding radially from the body;

[0033] The invention also relates to a sealed chamber door arranged to cooperate with the above-described device for rotatably coupling a door.

[0034] Further characteristics and advantages of the invention will become more apparent on reading the following description of particular non-limiting embodiments of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The invention may be better understood on reading the following description given by way of non-limiting example and with reference to the accompanying drawings, in which:

[0036] [ Figure 1 ] is a schematic internal view of a sealing chamber provided with a sealing chamber flange, the door of which is shown in a closed state and is intended to be connected to a container flange provided with a door according to the invention;

[0037] [ Figure 2 ]yes Figure 1 A schematic perspective view of a sealed chamber, wherein the door of the sealed chamber is in an open state;

[0038] [ Figure 3 ] is an exploded perspective view of a container flange equipped with a container door according to a first embodiment of the present invention;

[0039] [ Figure 4 ]yes Figure 3 Cross-sectional view of the flange and container door;

[0040] [ Figure 5 ] is a perspective view showing a first step of connecting a container flange equipped with a door according to the present invention to a sealing chamber flange;

[0041] [ Figure 6 ] is a perspective view showing a second step of connecting a container flange equipped with a door according to the present invention to a sealing chamber flange;

[0042] [ Figure 7 ] is a perspective view showing a third step of connecting a container flange equipped with a door according to the present invention to a sealing chamber flange;

[0043] [ Figure 8] is a cross-sectional view of a container flange equipped with a container door according to a second embodiment of the present invention;

[0044] [ Figure 9 ]yes Figure 8 Exploded perspective view of the flange and container door:

[0045] [ Figure 10 ] is installed in Figure 8 A perspective view of a container door on a container flange;

[0046] [ Figure 11 ] is a schematic perspective view of a container door according to a third embodiment of the present invention;

[0047] [ Figure 12 ]yes Figure 11 Schematic cross-sectional view of a container door. DETAILED DESCRIPTION

[0048] refer to Figures 1 to 3 The sealing chamber partition 1 is provided with a sealing chamber flange 2, wherein a container flange 3 provided with a container door 30 is engaged thereto using a first bayonet connection, which consists of a first group of four sealing chamber flange lugs 2 (not shown) and a first group of four lugs 3.1 to 3.4 of the container flange 3 (as shown in FIG. Figure 3 The container itself (not shown) extends from the flange 3 outside the sealed chamber and can consist of a flexible bag or a rigid shell.

[0049] The sealing chamber flange 2 has an inner surface 4 facing the inside of the sealing chamber in which it is assembled, and an outer surface 7 facing the outside of the sealing chamber in which it is assembled, to which the container flange 3 is coupled.

[0050] The sealing chamber flange 2 is provided with a hinge 14 inside the sealing chamber, and a sealing chamber door 15 (such as Figure 1 and Figure 2 (as shown). The sealed chamber door 15 has an outer surface 8 facing the exterior of the sealed chamber 2. The door 15 itself is connected to the hinge 14 via an arm 16. One end of the arm 16 is rigidly connected to the rotating element of the hinge 14, and the body of the arm 16 is connected to the door 15. The door 15 includes a locking unit equipped with a cam 21 (or tensioner) that protrudes radially from the opposite side of the hinge 14. The door 15 also includes a first square parallelepiped impression 17, which is recessed from the outer surface 8 of the door 15. The door 15 includes four sealed chamber door 15 outer protrusions 15.1 to 15.4, which protrude radially from the door 15 toward the main axis AX.

[0051] The sealing chamber door 15 opens toward the interior of the sealing chamber to release the central opening 18 of the flange 2, as shown in FIG. Figure 2 The door 15 can also be folded back onto the opening 18 to close it, corresponding to Figure 1 As shown in the structure. Figure 1 and Figure 2 As shown, the hinge 14 extends along an axis AY parallel to the partition 1 , where the axis AY is oriented vertically.

[0052] The sealing chamber flange 2 is equipped with a locking device comprising a rotary lock 19 for selectively cooperating with a cam 21 .

[0053] Opposite the hinge 14 , a rotary lock 19 projects from the inner surface 4 while being pivotable about an axis parallel to the axis AX. This lock 19 comprises a finger 22 extending parallel to the inner surface 4 and capable of cooperating with a cam 21 .

[0054] When the door 15 is folded back, the cam 21 faces the lock 19, which pivots about its axis so that its finger 22 can engage with the cam 21, thereby locking the door. Rotating the lock 19 in the opposite direction disengages its finger 22, thereby releasing the cam 21, allowing the door 15 to be opened and releasing the opening 18.

[0055] like Figure 3 As shown, the container flange 3 is annular and includes a cylindrical inner surface 5 that defines an inner channel 6. The inner channel 6 includes four inner protrusions 10 to 13 that are regularly distributed around the central main axis AX of the flange 3 and protrude radially toward the axis AX. The inner protrusions 10 to 13 extend along a 30-degree arc area centered on the axis AX. Figure 3 As shown, the surface of the projection 10 facing the inner passage 6 comprises a truncated pyramidal indentation 10.1 recessed from the surface. The inner projections 11, 12 and 13 comprise similar indentations 11.1, 12.1 and 13.1 respectively.

[0056] like Figure 3 As shown, the container door 30 comprises a cylindrical body 31 rotated along an axis AX. The body 31 further defines a cylindrical blind-end recess 32 about the axis AX, which opens at a front face 33 of the body 31. The recess 32 is delimited by a bottom 32.1 and a wall 34 having a set of four radially projecting inner protrusions 35, 36, 37 and 38 capable of forming an inner bayonet connection with the outer protrusions 15.1 to 15.4 of the sealing chamber door 15.

[0057] The door 30 also includes a plate 40 that is rotatably mounted relative to the body 31 about an axis AX and extends toward the rear side 33.1 of the body 31, opposite the front side 33. To this end, the plate 40 includes an axial cylindrical projection 41 that is received in a central cylindrical bearing 39 of the body 31. A screw 42 passing through the projection 41 and the bearing 39 rotatably connects the plate 40 to a cover 43 located on the side of the front side 33 of the body 31. The top of the cover 43 is provided with a second square parallelepiped stamp 44 that protrudes from the top surface 45 of the cover 43. The second stamp 44 is complementary to the first stamp 17. A first coil spring 46 inserted between the body 31 and the cover 43 returns the plate 40 to the body 31. A seal 59 at the bearing 39 ensures tightness between the body 31 and the plate 40.

[0058] The plate 40 comprises a set of four external lugs 48, 49, 50 and 51 projecting radially from its periphery 47, which are capable of forming an external bayonet connection with the internal lugs 10 to 13. Figure 3 As shown, the face of lug 48 facing the body 31 includes a truncated pyramidal dog point 48.1 projecting axially from that face. Lugs 49, 50 and 51 include similar dog points 49.1, 50.1 and 51.1, respectively.

[0059] The body 31 comprises four outer stop projections 55 to 58 regularly distributed around the axis AX, which project radially from the body 31 . Figure 3 The two outer stop projections 56 and 57 can be seen in FIG. The outer stop projections 55 to 58 radially protrude from the circular periphery of the main body 31 so as to be able to engage between two adjacent inner stop projections 10 to 13 of the flange 3 against which they abut, as shown in FIG. Figure 4 Therefore, the stop protrusions 55 to 58 lock the rotation of the main body 31 relative to the container flange 3 around the axis AX.

[0060] refer to Figures 5 to 7 , the steps of connecting the container flange 3 to the sealing chamber consist of: engaging the lugs 3.1 to 3.4 of the container flange 3 with the sealing chamber flange 2 ( Figure 5 and Figure 6 ), and then pivot the container flange 3 about the axis AX, for example by means of two handles (not shown) Figure 7 During the operation of bringing the container flange 3 close to the sealing chamber flange 2 ( Figure 5), the second indentation 44 of the cover 43 is received by the first indentation 17 of the sealing chamber door 15, thereby rotatably coupling the sealing chamber door 15 and the plate 40. When the container flange 3 is inserted into the sealing chamber flange 2, the force exerted by the sealing chamber door 15 on the cover 43 overcomes the force of the first spring 46, causing the plate 40 to translate relative to the body 31 in a direction parallel to the axis AX. The positioning bosses 48.1, 49.1, 50.1 and 51.1 are respectively removed from the notches 10.1, 11.1, 12.1 and 13.1, and then the body 31 can freely rotate relative to the plate 40 ( Figure 6 ).

[0061] Then, a rotational motion is applied to the container flange 3 (eg Figure 6 As shown, here it is a 60-degree clockwise rotation), during this rotational motion, the following steps occur:

[0062] - Engagement of a first bayonet connection, also called flange-flange connection (not shown in the figure), to connect the container flange 3 to the sealing chamber flange 2 ( Figure 7 ). Therefore, the first bayonet connection forms a coupling device of the two flanges;

[0063] - the outer projections 15.1 to 15.4 of the sealing chamber door 15 cooperate with the inner lugs 35 to 38 of the container door 30 to form an internal bayonet connection, also called a door-to-door connection (not shown in the figures). The internal bayonet connection connects the container door 30 to the sealing chamber door 15. This second bayonet connection thus forms a means for connecting and disconnecting the container door from the sealing chamber door;

[0064] The second indentation 44, which engages with the first indentation 17, locks the plate 40 from rotating relative to the sealing chamber door 15 about the axis AX. The stop protrusions 55 to 58, which contact the inner protrusions 10 to 13, lock the body 31 from rotating relative to the container flange 3 about the axis AX. Therefore, during rotation of the container flange 3 about the axis AX, the plate 40 remains fixed relative to the sealing chamber flange 2, while the body 31 rotates relative to the plate 40. This causes the stop protrusions 55 to 58 to face the lugs 48 to 51, disconnecting the external bayonet connection (also known as the flange-door connection). The container door 30 is then disconnected from the container flange 3.

[0065] Once the container door 30 and the sealing chamber door 15 are connected, the sealing chamber door 15 can be opened to release the central opening 18 by opening the container door 30 together with the container door 30. Figure 2 Corresponding to the scene in .

[0066] Likewise, after the transfer is completed, the sealing chamber door 15 is folded back and then locked in the closed state by activating the lock 19. The operator then pivots the container 3 in the opposite direction, engaging the outer bayonet connection of the plate 40 on the container 3, thereby connecting the container door 30 to the container flange 3; disconnecting the inner bayonet connection, thereby disconnecting the container door 30 from the sealing chamber door 15, and disconnecting the connection between the sealing chamber flange 2 and the container flange 3, thereby releasing the container flange 3.

[0067] This results in a container whose specific arrangement of the door 30 allows the total force required by the operator to overcome the friction caused by the bayonet connection to be significantly reduced by substantially reducing the friction caused by disconnecting the door 30 from the container flange 3.

[0068] In the following description of the second and third embodiments of the present invention, the same or similar elements as those described above will be denoted by the same reference numerals as those described above.

[0069] according to Figure 8 and Figure 9 In the second embodiment of the invention shown, the container door 30 comprises means 60 for locking the plate 40 so as to prevent it from rotating relative to the cylindrical body 31 about the main axis (AX).

[0070] The locking device 60 includes a pin 61 slidably mounted in a recess 62 of the cylindrical body 31. The pin 61 is cylindrical and includes a lower portion 63, the free end of which engages the recess 62. The force exerted by a second spring 64 on the lower portion 63 tends to remove the pin 61 from the recess 62. The upper portion 65 of the pin 61 is segmented and includes a first portion 66 having a size substantially equal to that of the recess 62. The first portion 66 is topped by a second portion 67 having a diameter significantly smaller than that of the first portion 66.

[0071] The cover 43 is provided with a port 68 centered on the axis AX and forming a 30 degree arc area around the axis AX. The port 68 includes a first end 68.1 and a second end 68.2. The first end 68.1 includes a cylindrical stamping 69 for receiving the first portion 66.

[0072] When not connected to the sealing chamber door 15, the pin 61 is pushed back by the spring 64 and the first portion 66 engages in the stamping 69. The first portion 66 engaged in the stamping 69 locks the rotation of the plate 40 relative to the body 31, and the container door 3 is locked to the container flange by an external bayonet connection (also called flange-door connection).

[0073] When the container flange 3 is brought close to the sealing chamber flange 2, the second indentation 44 of the cover 43 is received in the first indentation 17 of the sealing chamber door 15. Then, the pin 61 is pushed back into the recess 62 by the first indentation 17 against the force of the spring 64, and the first portion 66 is pushed back out of the indentation 69. The sealing chamber door 15 and the plate 40 are thus rotatably coupled together. Then, a rotational motion (here, Figure 9 60 degrees clockwise as shown), during this rotational motion, the following steps occur:

[0074] - engaging a first bayonet connection, also called flange-flange connection (not shown in the figures), to connect the container flange 3 to the sealing chamber flange 2 via the lugs 3.1 to 3.4. This first bayonet connection thus forms a coupling device for the two flanges;

[0075] - the outer projections 15.1 to 15.4 of the sealing chamber door 15 cooperate with the inner lugs 35 to 38 of the container door 30 to engage an inner bayonet connection, also called a door-to-door connection (not shown in the figures). The inner bayonet connection connects the container door 30 to the sealing chamber door 15. This second bayonet connection thus forms a means for connecting and disconnecting the container door from the sealing chamber door;

[0076] After thirty degrees of rotation, pin 61 reaches and abuts end 68.2 of port 68. Thus, as container flange 3 continues to rotate about axis AX, plate 40 remains fixed relative to seal chamber flange 2, while body 31 rotates relative to plate 40. This causes retaining projections 55 to 58 to move toward lugs 48 to 51 and disengage the external bayonet connection (also known as the flange-door connection). Container door 30 is then disconnected from container flange 3.

[0077] Once the container door 30 is coupled to the sealed chamber door 15, opening the sealed chamber door 15 frees the central opening 18 by opening the container door 30 with it. Figure 2 Corresponding to the scene in .

[0078] Likewise, after the transfer is completed, the sealing chamber door 15 is folded back and then locked in the closed state by activating the lock 19. The operator then pivots the container 3 in the opposite direction, engaging the outer bayonet connection of the plate 40 on the container 3, thereby connecting the container door 30 to the container flange 3; disconnecting the inner bayonet connection, thereby disconnecting the container door 30 from the sealing chamber door 15; and simultaneously disconnecting the connection between the sealing chamber flange 2 and the container flange 3, thereby releasing the container flange 3.

[0079] according to Figure 11 and Figure 12In the third embodiment of the present invention, coupling device 70 includes a radial arm 71 rigidly connected to plate 40 by screw 42 for integral rotation therewith. Arm 71 includes a first end 72 from which a first stop 73 and a second stop 74 project axially. Stop 73 extends into a first recess 80 defined by the bottom 32.1 of recess 32, wall 34, and lug 38. Stop 74 extends into a second recess 81 defined by the bottom 32.1 of recess 32, wall 34, and lug 37. Arm 71 includes a second end 75 diametrically opposite first end 72 from which a third stop 76 and a fourth stop 77 project axially. Stop 76 extends into a third recess 83 defined by the bottom 32.1 of recess 32, wall 34, and lug 35. The stop 77 extends into a fourth groove 82 delimited by the bottom 32 . 1 of the recess 32 , the wall 34 and the lug 36 .

[0080] The container door 30 according to the third embodiment is adapted to cooperate with the sealing chamber 15 , wherein the sealing chamber outer surface 8 is flat and has no embossing 17 .

[0081] When not connected to the sealing chamber door 15, the pin 61 is pushed back by the spring 64 and the first portion 66 engages in the stamping 69. The first portion 66 engaged in the stamping 69 locks the rotation of the plate 40 relative to the body 31, and the container door 3 is locked on the container flange by the external bayonet connection.

[0082] When the container flange 3 and the sealing chamber flange 2 are engaged, the pin 61 is then pushed back into the recess 62 by the outer surface 8 of the door 15 against the action of the spring 64 , and the first portion 66 is pushed back out of the indentation 69 .

[0083] The outer protrusion 15.1 of the sealing chamber door 15 is engaged between the lugs 37 and 38, and the outer protrusion 15.3 of the sealing chamber door 15 is engaged between the lugs 35 and 36. Therefore, the outer protrusion 15.1 is located between the stops 73 and 74, and the outer protrusion 15.3 is located between the stops 76 and 77.

[0084] When a rotational motion is applied to the container flange 3 (eg Figure 9 As shown, here it is rotated 60 degrees clockwise), the protrusions 15.1 and 15.3 press on the stops 73 and 77 respectively, causing them to rotate in the grooves 80 and 82 respectively. The rotation of the flange 3 causes the plate 40 to rotate. During this rotational movement, the following steps occur:

[0085] - engaging a first bayonet connection, also called flange-flange connection (not shown in the figures), to connect the container flange 3 to the sealing chamber flange 2 via the lugs 3.1 to 3.4. This first bayonet connection thus constitutes a coupling device for the two flanges;

[0086] The outer projections 15.1 to 15.4 of the sealing chamber door 15 cooperate with the inner lugs 35 to 38 of the container door 30 to form an internal bayonet connection, also called a door-to-door connection (not shown). This internal bayonet connection connects the container door 30 to the sealing chamber door 15. Thus, this second bayonet connection forms a means for connecting and disconnecting the container door from the sealing chamber door.

[0087] After a 30-degree rotation, the pin 61 reaches and abuts against the end 68.2 of the port 68. Thus, as the container flange 3 continues to rotate about the axis AX, the plate 40 remains fixed relative to the container flange 2, while the body 31 rotates relative to the plate 40. This causes the retaining protrusions 55 to 58 to face the lugs 48 to 51, releasing the external bayonet connection (also known as the flange-door connection). The container door 30 is then disconnected from the container flange 3.

[0088] Once the container door 30 and the sealed chamber door 15 are connected, the sealed chamber door 15 can be opened to release the central opening 18 by opening the container door 30 together. Figure 2 Corresponding to the scene in .

[0089] Similarly, after the transfer is complete, the sealing chamber door 15 is folded back and then locked in the closed position by activating the lock 19. The operator then pivots the container 3 in the opposite direction, causing the protrusions 15.1 and 15.3 to press against the stops 74 and 76, respectively, thereby actuating the plate 40. This enables the outer bayonet connection of the plate 40 on the container 3 to be engaged to connect the container door 30 to the container flange 3; the inner bayonet connection to be disconnected to disconnect the container door 30 from the sealing chamber door 15; and the connection between the sealing chamber flange 2 and the container flange 3 to be disconnected to release the container flange 3.

[0090] Of course, the invention is not limited to the embodiments described, but covers any alternative embodiment coming within the ambit of the invention as defined by the claims.

[0091] In particular,

[0092] - Although the embossing here is a parallelepiped with a square cross-section, the present invention is also applicable to other types of embossing patterns, such as other forms of quadrilateral patterns, such as rectangles, diamonds or any shape. The embossing can also adopt a triangular or polygonal pattern. The embossing can optionally protrude or be recessed from the top surface of the cover;

[0093] - although the coupling device herein comprises a square stamping intended to cooperate with an equivalent stamping of the container door, the invention is also applicable to other types of coupling devices accessible from the front of the door body, for example devices that do not require modification of the sealed chamber door and in which the coupling is carried out by friction using a friction disc mounted on the lid;

[0094] - Although the outer lugs herein comprise truncated pyramidal positioning bosses, the present invention is also applicable to other types of components for locking an outer bayonet connection, such as cylindrical positioning bosses or any other type of axially protruding protrusions or axially recessed parallelepipeds or indentations of any shape;

[0095] - although the container here comprises a coil spring, the invention is also applicable to other types of reset means, which may be elastic reset means, such as elastic blocks, Belleville spring washers, or reset means without elastic elements, such as magnets;

[0096] - Although the external lugs herein include truncated pyramidal positioning bosses, the present invention is also applicable to other types of components for locking flange-door (or external bayonet) connections, such as cylindrical positioning bosses or any other type of axially protruding protrusions or axially recessed parallelepiped or other indentations of any arbitrary shape;

[0097] - although the body here comprises four outer stop projections, the invention is also applicable to other types of locking the body against rotation, such as a single stop projection;

[0098] - Although the operations of connecting and disconnecting the container and the sealing chamber flange require the container and the sealing chamber flange to be rotated relative to each other by sixty degrees, the present invention is also applicable to other angular amplitude values, such as thirty degrees;

[0099] - Although here the radial arm comprises four stops, the invention is also applicable to arms comprising a different number of stops, for example a single stop, two, three or more than four stops.

Claims

1. A container door (30), comprising a cylindrical body (31) along a main axis of rotation (AX), the body (31) further defining a cylindrical blind-end recess (32) about the main axis (AX), the recess opening at a front face (33) of the body (31), the recess (32) comprising a wall (34) having a set of radially projecting inner lugs (35-38), the inner lugs being capable of forming an inner bayonet connection, the container door (30) further comprising a cylindrical body (31) relative to the body (31) a plate (40) rotatably mounted about the main axis (AX), the plate (40) extending towards a back side (33.1) opposite the front side (33), the plate (40) comprising a set of external lugs (48-51) projecting radially from its periphery (47), the external lugs being capable of forming an external bayonet connection, the container door (30) being provided with means (70, 43) for rotatably coupling to the plate (40), the means being accessible from the front side (33).

2. The container door (30) according to claim 1, wherein: The coupling means (70, 43) comprise an impression (44) for cooperating with a corresponding profile to transmit a rotational torque about the main axis (AX).

3. The container door (30) of claim 2, wherein the embossing (70, 44) comprises a quadrilateral pattern.

4. A container door (30) according to any one of the preceding claims, comprising locking means for locking the plate against rotation relative to the cylindrical body about the main axis (AX).

5. The container door (30) according to claim 4, wherein the locking device comprises a pin slidably mounted in a recess of the cylindrical body, and one end of the pin is segmented and engaged in a port of the coupling device.

6. The container door (30) according to claim 4 or 5, wherein: The coupling device (70) comprises at least one stop extending in a groove at least partially defined by a bottom (32.1) of the recess (32), a wall (34) of the recess and at least one inner lug of the set of inner lugs.

7. The container door (30) according to claim 6, wherein: The coupling device (70) comprises four stops (73, 74, 76, 77) extending in the groove and rigidly connected to an arm (71) extending diametrically in the recess (32).

8. The container door (30) according to any one of claims 1 to 3, comprising means (46) for returning the plate (40) to the body (31).

9. The container door (30) according to claim 8, wherein: The return device (46) comprises an elastic element (46).

10. The container door (30) according to claim 8 or 9, wherein: The external lugs (48-51) include locking components (48.1-51.1) connected to the external bayonet.

11. The container door (30) according to claim 10, wherein the locking component (48.1-51.1) comprises an axially recessed notch and / or an axially protruding protrusion (48.1-51.1).

12. The container door (30) according to any one of the preceding claims, wherein the body (31) comprises means (55-58) for locking the body (31) to prevent it from rotating about the main axis, and the locking means (55-58) comprises protrusions (55-58) protruding radially from the body (31).

13. A sealing chamber door (15) arranged to cooperate with a container door (30) according to any one of the preceding claims and comprising an outer protrusion (15.1-15.4) capable of cooperating with the set of inner lugs (35-38) to form the inner bayonet connection and a connecting device (17) for connecting to the rotatable coupling device (70, 43).

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