EP3633800B1 - Electric connection device - Google Patents

Electric connection device Download PDF

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Publication number
EP3633800B1
EP3633800B1 EP19000442.4A EP19000442A EP3633800B1 EP 3633800 B1 EP3633800 B1 EP 3633800B1 EP 19000442 A EP19000442 A EP 19000442A EP 3633800 B1 EP3633800 B1 EP 3633800B1
Authority
EP
European Patent Office
Prior art keywords
electric connection
connection element
removable
connection device
unlocking tool
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
EP19000442.4A
Other languages
German (de)
French (fr)
Other versions
EP3633800A1 (en
Inventor
Sergio Creazzo
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.)
Valentini SRL
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Valentini SRL
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Publication date
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Publication of EP3633800A1 publication Critical patent/EP3633800A1/en
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Publication of EP3633800B1 publication Critical patent/EP3633800B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/625—Casing or ring with bayonet engagement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
    • H01R13/6397—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap with means for preventing unauthorised use
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/005—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure requiring successive relative motions to complete the coupling, e.g. bayonet type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/26—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for engaging or disengaging the two parts of a coupling device

Definitions

  • the present invention refers to an electric connection device.
  • the invention refers to an electric connection device, comprising two connection elements capable of being mutually coupled through a bayonet-type locking mechanism and through a secondary locking mechanism configured for preventing an accidental disconnection of the two connection elements, further comprising a removable unlocking mechanism.
  • Electric connection devices are known, for example from US5685730 , comprising two connection elements, configured to be blocked through a bayonet-type locking mechanism which provides that the two elements are pressed one towards the other and blocked following the rotation of one related to the other, further comprising a secondary locking mechanism of said connection elements, having a spring-loaded safety pin which prevents the mutual rotation of the two elements, said secondary locking mechanism requiring a suitable unlocking tool.
  • Electric connection device comprising: a first electric connection element (11); a second electric connection element (12) connectable to the first electric connection element (11) by means of respective electric contacts; a removable unlocking tool; a bayonet-type locking and unlocking mechanism (24, 19, 23) configured for coupling and uncoupling the first connection element (11) and the second connection element (12) following a rotation of one with respect to another; a secondary safety locking mechanism (50, 51), configured for preventing a rotation of the first connection element (11) and of the second connection element (12) one with respect to another and a consequent separation of the two elements (11, 12) comprising retractable locking means (84, 85) configured to be unlocked by the removable unlocking tool.
  • Electric connection devices are known which solve this problem by integrating with the electric connection device the unlocking system of the secondary locking mechanism, so that the skilled technician is not required to bring a suitable unlocking tool with him.
  • an electric connection device comprising two connection elements capable of being mutually coupled through a bayonet-type locking mechanism and through a secondary locking mechanism configured for preventing the accidental disconnection of the two connection elements, further comprising a removable unlocking tool, configured both to be connected to the device by a skilled technician, who therefore will not be compelled any more to bring with him any suitable unlocking tool, with the risk of losing it or forgetting it, and to be separated and extracted by the skilled technician, thereby preventing the unlocking of the electric connection device by unauthorized people.
  • the electric connection device of the invention comprises a first electric connection element 10, 10a, for example of the female type, preferably a front capsule 10 of the female type or a flange 10a of the female type for a fastening on a panel, connectable to a second electric connection element 12, 12a, for example of the male type, in particular a front capsule 12 of the male type or a flange 12a of the male type for a fastening on a panel, said first electric connection element 10, 10a and second electric connection element 12, 12a being mutually electrically connectable by means of respective electric contacts; a bayonet-type locking and unlocking mechanism configured for coupling the first connection element 10, 10a and the second connection element 12, 12a following a rotation of one with respect to the other along a first direction and for uncoupling said first connection element 10, 10a and said second connection element 12, 12a following a rotation of one with respect to the other along a second direction, opposite to the first; a secondary safety locking mechanism, configured for preventing the rotation of the first connection element 10, 10a and
  • the retractable locking means 22, 24 preferably comprise a seat 22, in a preferred way obtained on the external surface of the first connection element 10, 10a, a pin 24, in a preferred way inserted in a housing 25 obtained in the second connection element 12, 12a, and an elastic element, for example a spring, contiguous to the pin 24, also inserted in the housing 25; said secondary locking mechanism requires to be unlocked by the insertion of the suitable removable unlocking tool 32 in the seat 22 which determines the retraction of the pin 24 in the housing 25 in order to allow the rotation of said first and second connection elements 10, 10a, 12, 12a one with respect to the other along the second direction which implies its separation.
  • the electric connection device of the invention comprises the removable unlocking tool 32, slidingly connectable to the first connection element 10, 10a, through removable connecting means 40 configured to be removably fastened to the electric connection device.
  • the connecting means comprise a ring nut 40 fastened to the first connection element 10, 10a, so that the removable unlocking tool 32 is sliding along first guiding means 48 made thereon both with respect to the first connection element 10, 10a, and with respect to the connecting means 40; in particular, said connecting means 40 are configured to be removably fastened to the first connection element 10, 10a, through removable fastening means of the known type, for example a screw, to connect the removable unlocking tool 32 to or to be remnoved from the first connection element 10, 10a, remolving the removable fastening means, to separate the unlocking tool 32 from the electric connection device.
  • removable fastening means of the known type, for example a screw
  • the connecting means 40 comprise second guiding means 46 configured to cooperate with the first guiding means 48 of the removable unlocking tool 32, in order to slide said removable unlocking tool 32, once connected to the first connection element 10, 10a, both with respect to the connecting means 40 and with respect to the electric connection device, comprising said removable unlocking tool 32, stop means 47, for example steps 47 obtained next to the ends of the guiding means 46, 48, configured to stop their sliding along the guiding means 46, 48 at the end of their stroke.
  • the bayonet-type locking mechanism is configured so that, when the first connection element 10, 10a and the second connection element 12, 12a are pushed one towards the other to be coupled, at least one projecting element 14, obtained on the internal surface of the first connection element 10, 10a and placed next to at least one "L"-shaped groove 18, obtained on the external surface of the second connection element 12, 12a, vertically slides inside a first section 23 of the groove 18, till it reaches a second section 21 of said groove 18, after that, when the first and the second connection elements 10, 10a, 12, 12a, are rotated along the first direction to be coupled, the projecting element 14, horizontally slides inside said second section 21 of the groove 18; preferably, the connection elements 10, 10a, 12, 12a comprise two projecting elements 14, and two "L"-shaped grooves 18.
  • the removable unlocking tool 32 configured to be inserted in the seat 22 of the first connection element 10, 10a in contact with the pin 24 and pressed against said pin 24 in order to push it inside the housing 25 obtained in the second connection element 12 and unlock the secondary locking mechanism allowing a user to rotate the first and the second connection elements 10, 10a, 12, 12a in order to uncouple them, comprises a projection 45 whose sizes coincide with those of the seat 22 in which the projection 45 is inserted in order to unlock it.
  • the electric connection device allows the skilled technician to choose whether removing the unlocking tool, for preventing the unlocking of the electric connection device by unauthorized people, or keeping the unlocking tool connected to the connection device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Manufacturing & Machinery (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Description

  • The present invention refers to an electric connection device.
  • In particular, the invention refers to an electric connection device, comprising two connection elements capable of being mutually coupled through a bayonet-type locking mechanism and through a secondary locking mechanism configured for preventing an accidental disconnection of the two connection elements, further comprising a removable unlocking mechanism.
  • Electric connection devices are known, for example from US5685730 , comprising two connection elements, configured to be blocked through a bayonet-type locking mechanism which provides that the two elements are pressed one towards the other and blocked following the rotation of one related to the other, further comprising a secondary locking mechanism of said connection elements, having a spring-loaded safety pin which prevents the mutual rotation of the two elements, said secondary locking mechanism requiring a suitable unlocking tool.
  • Furthermore, document US 2009/163066 A1 discloses (reference in parenthesis apply to this document):
    Electric connection device comprising: a first electric connection element (11); a second electric connection element (12) connectable to the first electric connection element (11) by means of respective electric contacts; a removable unlocking tool; a bayonet-type locking and unlocking mechanism (24, 19, 23) configured for coupling and uncoupling the first connection element (11) and the second connection element (12) following a rotation of one with respect to another; a secondary safety locking mechanism (50, 51), configured for preventing a rotation of the first connection element (11) and of the second connection element (12) one with respect to another and a consequent separation of the two elements (11, 12) comprising retractable locking means (84, 85) configured to be unlocked by the removable unlocking tool.
  • These known electric connection devices have the advantage that they prevent, through the secondary locking mechanism, both the accidental unlocking of the two connection elements and the unlocking by people not equipped with a suitable unlocking tool, since not authorized, operation which can be dangerous, especially if the connector is of the high-voltage type.
  • However, these known electric connection devices have the problem that the authorized technician could forget or lose his suitable unlocking tool, which would make this unlocking less easy.
  • Electric connection devices are known which solve this problem by integrating with the electric connection device the unlocking system of the secondary locking mechanism, so that the skilled technician is not required to bring a suitable unlocking tool with him.
  • These latter electric connection devices however have the problem that they are not able of preventing the unlocking by non-authorized people.
  • Object of the present invention, as defined in independent claim 1, is providing an electric connection device comprising two connection elements capable of being mutually coupled through a bayonet-type locking mechanism and through a secondary locking mechanism configured for preventing the accidental disconnection of the two connection elements, further comprising a removable unlocking tool, configured both to be connected to the device by a skilled technician, who therefore will not be compelled any more to bring with him any suitable unlocking tool, with the risk of losing it or forgetting it, and to be separated and extracted by the skilled technician, thereby preventing the unlocking of the electric connection device by unauthorized people.
  • The above and other objects and advantages of the invention, as will result from the following description, are obtained with an electric connection device as claimed in the independent claim. Preferred embodiments and non-trivial variations of the present invention are the subject matter of the dependent claims.
  • It will be immediately obvious that numerous variations and modifications (for example related to shape, sizes, arrangements and parts with equivalent functionality) can be made to what is described, without departing from the scope of the invention as defined by the enclosed claims.
  • The present invention will be better described by some preferred embodiments thereof, provided as a non-limiting example, with reference to the enclosed drawings, in which:
    • Figure 1 is an exploded perspective view and a perspective view of a first element of an electric connection device according to the present invention;
    • Figure 2 is an exploded perspective view and a perspective view of a first element of an electric connection device according to the present invention; and
    • Figure 3 are two perspective views of a second element of an electric connection device according to the present invention.
  • With reference to the Figures, a preferred embodiment of the electric connection device according to the present invention is shown and described.
  • The electric connection device of the invention comprises a first electric connection element 10, 10a, for example of the female type, preferably a front capsule 10 of the female type or a flange 10a of the female type for a fastening on a panel, connectable to a second electric connection element 12, 12a, for example of the male type, in particular a front capsule 12 of the male type or a flange 12a of the male type for a fastening on a panel, said first electric connection element 10, 10a and second electric connection element 12, 12a being mutually electrically connectable by means of respective electric contacts; a bayonet-type locking and unlocking mechanism configured for coupling the first connection element 10, 10a and the second connection element 12, 12a following a rotation of one with respect to the other along a first direction and for uncoupling said first connection element 10, 10a and said second connection element 12, 12a following a rotation of one with respect to the other along a second direction, opposite to the first; a secondary safety locking mechanism, configured for preventing the rotation of the first connection element 10, 10a and of the second connection element 12, 12a one with respect to the other along said second direction and the consequent separation of the two elements 10, 10a and 12, 12a, comprising retractable locking means 22, 24 configured to be unlocked by a removable unlocking tool 32.
  • The retractable locking means 22, 24 preferably comprise a seat 22, in a preferred way obtained on the external surface of the first connection element 10, 10a, a pin 24, in a preferred way inserted in a housing 25 obtained in the second connection element 12, 12a, and an elastic element, for example a spring, contiguous to the pin 24, also inserted in the housing 25; said secondary locking mechanism requires to be unlocked by the insertion of the suitable removable unlocking tool 32 in the seat 22 which determines the retraction of the pin 24 in the housing 25 in order to allow the rotation of said first and second connection elements 10, 10a, 12, 12a one with respect to the other along the second direction which implies its separation.
  • The electric connection device of the invention comprises the removable unlocking tool 32, slidingly connectable to the first connection element 10, 10a, through removable connecting means 40 configured to be removably fastened to the electric connection device.
  • For example, the connecting means comprise a ring nut 40 fastened to the first connection element 10, 10a, so that the removable unlocking tool 32 is sliding along first guiding means 48 made thereon both with respect to the first connection element 10, 10a, and with respect to the connecting means 40; in particular, said connecting means 40 are configured to be removably fastened to the first connection element 10, 10a, through removable fastening means of the known type, for example a screw, to connect the removable unlocking tool 32 to or to be remnoved from the first connection element 10, 10a, remolving the removable fastening means, to separate the unlocking tool 32 from the electric connection device.
  • In a preferred way the connecting means 40 comprise second guiding means 46 configured to cooperate with the first guiding means 48 of the removable unlocking tool 32, in order to slide said removable unlocking tool 32, once connected to the first connection element 10, 10a, both with respect to the connecting means 40 and with respect to the electric connection device, comprising said removable unlocking tool 32, stop means 47, for example steps 47 obtained next to the ends of the guiding means 46, 48, configured to stop their sliding along the guiding means 46, 48 at the end of their stroke.
  • In a known way, the bayonet-type locking mechanism is configured so that, when the first connection element 10, 10a and the second connection element 12, 12a are pushed one towards the other to be coupled, at least one projecting element 14, obtained on the internal surface of the first connection element 10, 10a and placed next to at least one "L"-shaped groove 18, obtained on the external surface of the second connection element 12, 12a, vertically slides inside a first section 23 of the groove 18, till it reaches a second section 21 of said groove 18, after that, when the first and the second connection elements 10, 10a, 12, 12a, are rotated along the first direction to be coupled, the projecting element 14, horizontally slides inside said second section 21 of the groove 18; preferably, the connection elements 10, 10a, 12, 12a comprise two projecting elements 14, and two "L"-shaped grooves 18. When the first 10, 10a and the second 12, 12a connection elements are rotated along the first direction and the projecting element 14 of the first connection element 10 horizontally slides inside the second section 21 of the groove 18, in the second connection element 12, 12a the pin 24 gets in contact with the first connection element 10, 10a which pushes it inside the housing 25 obtained in the second connection element 12, 12a compressing the spring, after that the pin 24 retracted in the housing 25 slides, following the rotation of the connection elements 10, 10a, 12, 12a, till it meets the seat 22 of the first connection element 10, 10a which implies that the pin 24, not in contact any more with the first element 10, 10a, is pushed by the decompression of the spring inside the seat 22 blocking the first and second connection elements 10, 10a, 12, 12a in such a manner that it prevents their mutual rotation.
  • In a preferred way, the removable unlocking tool 32, configured to be inserted in the seat 22 of the first connection element 10, 10a in contact with the pin 24 and pressed against said pin 24 in order to push it inside the housing 25 obtained in the second connection element 12 and unlock the secondary locking mechanism allowing a user to rotate the first and the second connection elements 10, 10a, 12, 12a in order to uncouple them, comprises a projection 45 whose sizes coincide with those of the seat 22 in which the projection 45 is inserted in order to unlock it.
  • Advantageously, the electric connection device allows the skilled technician to choose whether removing the unlocking tool, for preventing the unlocking of the electric connection device by unauthorized people, or keeping the unlocking tool connected to the connection device.

Claims (9)

  1. Electric connection device comprising: a first electric connection element (10, 10a); a second electric connection element (12, 12a) connectable to the first electric connection element (10, 10a) by means of respective electric contacts; a removable unlocking tool (32); removable connecting means (40); a bayonet-type locking and unlocking mechanism configured for coupling and uncoupling the first connection element (10, 10a) and the second connection element (12, 12a) following a rotation of one with respect to another; a secondary safety locking mechanism, configured for preventing a rotation of the first connection element (10, 10a) and of the second connection element (12, 12a) one with respect to another and a consequent separation of the two elements (10, 10a, 12, 12a) comprising retractable locking means (22, 24) configured to be unlocked by the removable unlocking tool (32), wherein the removable unlocking tool (32) is connectable to the electric connection device through the removable connecting means (40) which are configured to be removably fastened to the electric connection device.
  2. Electric connection device according to claim 1, characterized in that the removable connecting means (40) comprise a ring nut (40) fastened to the first connection element (10, 10a) so that the removable unlocking tool (32) is sliding along first guiding means (48) made thereon, both with respect to the first connection element (10, 10a) and with respect to the connecting means (40).
  3. Electric connection device according to claim 2, characterized in that the removable connecting means (40) comprise second guiding means (46) configured to cooperate with the first guiding means (48) of the removable unlocking tool (32), in order to slide said removable unlocking tool (32), once connected to the first connection element (10, 10a) both with respect to the connecting means (40) and with respect to the electric connection device.
  4. Electric connection device according to any one of the previous claims, characterized in that the removable unlocking tool (32) comprises stop means (47) obtained next to ends of the guiding means (46, 48), configured to stop their sliding along the guiding means (46, 48) at the end of their stroke.
  5. Electric connection device according to any one of the previous claims, characterized in that the retractable locking means (22, 24) comprise a seat (22), a retractable pin (24), and an elastic element contiguous to the pin (24), and in that said secondary locking mechanism requires to be unlocked by an insertion of the removable unlocking tool (32) in the seat (22), which determines a retraction of the pin (24) in order to allow the rotation of said first and second connection elements (10, 10a, 12, 12a) one with respect to another to separate them.
  6. Electric connection device according to claim 5, characterized in that the seat (22) is obtained on the external surface of the first connection element (10, 10a), the pin (24) is inserted in an housing (25) obtained in the second connection element (12, 12a), and the elastic element is inserted in the housing (25), and in that said secondary locking mechanism requires to be unlocked by an insertion of the removable unlocking tool (32) in the seat (22), which determines the retraction of the pin (24) in the housing (25) in order to allow the rotation of said first and second connection elements (10, 10a, 12, 12a) one with respect to another to separate them.
  7. Electric connection device according to claim 6, characterized in that the removable unlocking tool (32) comprises a projection (45) configured to be inserted in the seat (22) in order to unlock it.
  8. Electric connection device according to any one of the previous claims, characterized in that it comprises at least one projecting element (14), obtained on the internal surface of the first connection element (10, 10a), and in that the bayonet-type locking mechanism is configured so that, when the first connection element (10, 10a) and the second connection element (12, 12a) are pushed one towards another to be coupled, said projecting element (14), placed next to at least one "L"-shaped groove (18) obtained on the external surface of the second connection element (12, 12a), vertically slides inside a first section (23) of the groove (18), till it reaches a second section (21) of said groove (18), after that, when the first and the second connection elements (10, 10a, 12, 12a) are rotated to be coupled, the projecting element (14) horizontally slides inside said second section (21) of the groove (18) for coupling the first electric connection element (10, 10a) and the second electric connection element (12, 12a).
  9. Electric connection device according to claim 8, characterized in that the connection elements (10, 10a, 12, 12a) comprise two projecting elements (14) and two "L"-shaped grooves (18).
EP19000442.4A 2018-10-02 2019-10-01 Electric connection device Active EP3633800B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102018000009075A IT201800009075A1 (en) 2018-10-02 2018-10-02 Electrical connection device

Publications (2)

Publication Number Publication Date
EP3633800A1 EP3633800A1 (en) 2020-04-08
EP3633800B1 true EP3633800B1 (en) 2021-05-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4475353A1 (en) 2023-06-05 2024-12-11 ABB E-mobility B.V. A removable tool for disconnecting a cable connector

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5685730A (en) 1996-03-15 1997-11-11 Litton Precision Products International, Inc. Power connector set with secondary lock
JP3687728B2 (en) * 1999-08-02 2005-08-24 矢崎総業株式会社 Electric connector housing and fitting detection method thereof
DE102006018763A1 (en) * 2006-04-20 2007-10-25 Walther-Werke Ferdinand Walther Gmbh Electrical socket and plug device, has ring with borehole running in its longitudinal direction in edge region of stud to retain nut, where relative position of locking nut to ramps is limited such that nut is movable into two positions
US7726999B2 (en) * 2007-12-21 2010-06-01 Van-System S.R.L. Electrical connector set
EP2104186A1 (en) * 2008-03-21 2009-09-23 Bocchiotti S.p.A. Societa' per l'Industria Elettrotecnica Body for electrical socket or plug

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4475353A1 (en) 2023-06-05 2024-12-11 ABB E-mobility B.V. A removable tool for disconnecting a cable connector

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IT201800009075A1 (en) 2019-01-02
EP3633800A1 (en) 2020-04-08

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