EP3527754B1 - Dispositif de sécurité pour une serrure cylindrique - Google Patents

Dispositif de sécurité pour une serrure cylindrique Download PDF

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Publication number
EP3527754B1
EP3527754B1 EP19155698.4A EP19155698A EP3527754B1 EP 3527754 B1 EP3527754 B1 EP 3527754B1 EP 19155698 A EP19155698 A EP 19155698A EP 3527754 B1 EP3527754 B1 EP 3527754B1
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EP
European Patent Office
Prior art keywords
slider
recess
satellite
opening
satellites
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EP19155698.4A
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German (de)
English (en)
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EP3527754A1 (fr
Inventor
Pier Luigi Oliana
Emanuela Dal Fabbro
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Individual
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Individual
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/14—Closures or guards for keyholes
    • E05B17/18—Closures or guards for keyholes shaped as lids or slides
    • E05B17/186—Closures or guards for keyholes shaped as lids or slides sliding
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0038—Operating or controlling locks or other fastening devices by electric or magnetic means using permanent magnets
    • E05B47/0042—Operating or controlling locks or other fastening devices by electric or magnetic means using permanent magnets with rotary magnet tumblers

Definitions

  • the present invention is relative to an improved security device for a cylinder lock, in particular for doors or gates, having the purpose of safeguarding said cylinder lock from tampering, breaking-in or vandalizing attempts.
  • Cylinder locks that are suitable, for example, to allow the closing and opening of a door or a gate, that include a cylinder operated by means of a relative key inserted into a keyhole arranged axially with respect to the cylinder are widely known.
  • the cylinder locks of known type are generally made of brass, a material that offers scarce mechanical resistance against forced-entry attempts performed by drilling and/or breaking-in and/or wrenching.
  • a known solution is to fasten to the lock a covering element arranged so as to cover the cylinder and consisting of a plate of essentially circular shape provided, at the keyhole on the cylinder, with a round hole in which is rotatably connected a keyhole protection plate provided with a slit to allow the insertion of the key.
  • Italian Patent IT 1342717 B describes a security device for the cylinder of a lock that comprises a strip of essentially rectangular shape having at one end a through opening into which is inserted the section of the cylinder that protrudes from the lock.
  • each cam On the lateral surface of each cam is radially formed an undercut adapted to be engaged with a respective locking pin slidingly contained within a through hole formed transversely to the strip and communicating with the seat of the respective cam. Each pin is thrust toward the outside of the respective through hole by a spring inserted into the hole.
  • a covering element capable of selectively occluding the cylinder of the lock.
  • the release of the covering element is achieved by placing on the same element a relative magnetic key containing magnets that can couple with the magnets contained in the cams to cause the rotation of the cams to the point where the circumferential undercuts are brought into a position of axial alignment with the pins.
  • the lowering of the covering element causes the pins to come out of the lateral slots and to enter into the cam undercuts, so as to allow the downward sliding of the covering element and make the cylinder accessible for inserting the key to open the door.
  • the size of the device and in particular its considerable vertical extension, in addition to making it aesthetically unattractive, may entail seizures or jamming during the sliding of the covering element.
  • Another shortcoming lies in the possible difficulty in the unlocking operation under normal conditions, in which the user is required to apply, with a certain force, a downward thrust on the cover element to disengage the pins from the lateral slots of the cover element itself.
  • European Patent Application EP 2913461 A1 has been proposed, on which is based the preamble of claim 1, consisting of a security device of a cylinder lock that includes a cylindrical casing associable to said lock and provided with an axial opening wherein to house a cylinder of said lock, said opening being eccentric with respect to the centre of the casing.
  • a combinatory unit comprises magnetic means, a slider interposed between the casing and a protective key-plate adapted to be coupled to the casing and provided with a second through opening arranged out of line with respect to the centre of said key-plate so as to be aligned, when in use, with the axial opening.
  • the slider moves between a locking position, in which it occludes the axial opening to prevent access to the cylinder, and an unlocking position in which it allows access to the opening.
  • the switch between the locking position and the unlocking position, and vice versa, is actuatable by a magnetic actuator provided with a combination designed to cooperate with the magnetic means of the combinatory unit.
  • EP 2767656 A1 discloses a lock comprising a cylinder, fixed to a door or door wing, with which a pivot is associated coaxially and rotatably, a lever for closing the door or door wing to a jamb being keyed to the end of the pivot; a separate body can be keyed detachably to the head of the pivot and is provided with magnetic means for the temporary locking of the rotation of the body with respect to the cylinder.
  • the main objective of the present invention is therefore to improve the prior art cylinder lock security device of the above-mentioned patent so as to considerably increase the number of combinations that can be obtained with the combinatory unit.
  • one purpose of the present invention is to provide an improved security device for a cylinder lock without considerably increasing its dimensions with respect to the prior art device from Patent EP 2913461 .
  • Another purpose of the present invention is to provide an improved security device for a cylinder lock in which the structural simplicity and the ease of using it remain unchanged, or are improved, with respect to the device known from EP 2913461 .
  • One not secondary purpose is to provide an improved security device for a cylinder lock that achieves the objective and purposes indicated above at competitive costs and that can be obtained with the usual well-known machinery, plants and equipment.
  • a security device adapted to be coupled to a cylinder lock
  • said security device comprising a casing associable to said lock and provided with a first axial opening adapted to house a cylinder of said lock, said first axial opening being eccentrically arranged in respect to the center of said casing, a protective key-plate adapted to be coupled to said casing, said protective key-plate being provided with a second through-opening eccentrically arranged in respect to the center of said protective key-plate such that said second through-opening is aligned, in use, with said first opening, a slider movable in respect to said casing between a locking position, wherein said slider occludes said first opening in order to prevent, in use, accessing said cylinder, and an unlocking position, wherein said slider allows accessing said first opening, and a magnetic combinatory unit movable together with said slider, a cavity facing, in use, said casing being provided on an inner surface of said protective key-plate, said cavity having a substantially linear extension and being arranged substantially
  • the device is furthermore characterized in that said magnetic combinatory unit includes at least four satellites, namely a first satellite, a second satellite, a third satellite and a fourth satellite each containing respective magnetic means, said at least four satellites being adapted to be rotatably housed into respective seats provided on said slider, said seats being mutually arranged at right angles, wherein said first recess axially faces said third recess and said second recess axially faces said fourth recess, said blocking means being controlled by said at least four satellites, wherein each of said first satellite, second satellite, third satellite and fourth satellite comprises one respective cut, said blocking means further comprising a first flared portion and a second flared portion respectively connecting said heads to the respective pins, said first flared portion being adapted to selectively cooperate with the respective cuts of said first satellite and said third satellite and said second flared portion being adapted to selectively cooperate with the respective cuts of said second satellite and said fourth satellite.
  • said magnetic combinatory unit includes at least four satellites, namely a first satellite, a second
  • the reference numeral 1 indicates a security device for a cylinder lock according to the present invention.
  • the device comprises a casing 2, generally of cylindrical shape, designed to be associated to a lock and provided with a first axial opening 3 for inserting a cylinder (not shown in the enclosed figures).
  • the first opening 3 is arranged in an eccentric position with respect to the centre of the casing 2.
  • a key-hole protection disk 4 can advantageously be provided rotatably associated to the casing 2 in a position corresponding to the first opening 3.
  • the key-hole protection disk 4 is provided with a slit 5 to allow the insertion of a key in the lock cylinder.
  • a protective key-plate 6 can be coupled to the casing 2 from the side opposite the direction of insertion of the cylinder so that, when in use, it is positioned on the door front facing outward.
  • the protective key-plate 6 is provided with a second through opening 7 arranged eccentrically with respect to the centre of the key-plate 6 so that, when the device is mounted in place, it is positioned substantially aligned, preferably coaxially, with the first opening 3 of the casing 2 and, if present, with the key-hole protection disk 4.
  • a cavity 9 having an essentially rectilinear extension and oriented parallel to the medial axis passing through the second opening 7 and the key-plate 6.
  • guide means 10, 11 consisting for example of a first guide surface 10 on one side of the cavity 9 and of a second guide surface 11 on the opposite side.
  • the guide means 10, 11 include engaging means whose function will be better explained below, comprising, on one side, at least one first recess 12 and a second recess 13 and, on the opposite side, at least one third recess 14 and a fourth recess 15.
  • the first recess 12 is arranged axially facing the third recess 14, and the second recess 13 is arranged axially facing the fourth recess 15.
  • the walls of the cavity 9, or the first guide surface 10 and the second guide surface 11, are joined near the respective recesses 12, 13 and 14, 15 through an inclined plane or arc segment.
  • a slider 16 is slidably accommodated inside the cavity 9 and movable between a locking position ( figs. 3, 4 ), in which the slider 16 occludes the second opening 7 so as to close off and prevent access to the cylinder of the lock through the first opening 3 and, if present, the slit 5 on the key-hole protection disk 4, and an unlocking position ( figs. 7, 8 , 9 ), in which the slider 16 frees the passage through the second opening 7 to allow the user to insert the key into the cylinder through the slit 5 and the opening 3.
  • a locking position figs. 3, 4
  • an unlocking position figs. 7, 8 , 9
  • the slider 16 In the body of the slider 16 can be housed a combinatory unit of magnetic type that is thus movable together with the slider 16.
  • the combinatory unit includes at least four satellites 17, 18, 19, 20, each containing, within suitable cavities, respective magnetic means 21, 22, 23, 24; the rotation of the satellites, actuated by a suitable magnetic actuator as will be better explained below, allows or blocks the sliding of the cursor 16 by means of suitable blocking means 25, 26 controlled by the satellites 17, 18, 19, 20.
  • suitable blocking means 25, 26 At the travel limit positions of the slider 16, that is, when the slider 16 is in the upper, or locking, position to close the second opening 7 or in the lower, or unlocking position, the blocking means 25, 26 engage the engaging means, comprising the recesses 12, 13 and 14, 15, to stably block the slider 16 in those positions.
  • each satellite 17, 18, 19, 20 is provided a respective first cut 38, a second cut 39, a third cut 40 and a fourth cut 41.
  • the blocking means 25, 26 include a pair of pins 27, 28 provided with respective heads 30A, 30B having shapes, preferably semi-spherical, that are complementary to the shape of the recesses 12, 13, 14, 15 so that the heads 30A, 30B can selectively engage the recesses 12 and 14 or the recesses 13 and 15, depending on the operating position of the device.
  • the pins 27, 28 have respective flared connecting portions 29A, 29B between the heads 30A, 30B and the stems of the pins 27, 28; the flared portion 29A of the pin 27 is suitable to cooperate with the first and the third cut 38, 40, while the flared portion 29B of the pin 28 is designed to cooperate with the second and the fourth cut 39, 41 in accordance with the operating modes that will be better explained below.
  • the pins 27, 28 are slidingly housed in a through hole 31 or in respective coaxial and opposite blind holes formed transversally to the slider 16 so that said pins 27, 28 are arranged axially opposite to each other and oriented with their heads facing in opposite directions.
  • the pins 27, 28 slide counter to the bias of elastic means, such as a respective first spring 32 and second spring 33 arranged coaxially with the pins 27, 28 and in contact with suitable engagement means formed in the hole 31, or a single spring biasing against the heads of the pins 27, 28.
  • elastic means such as a respective first spring 32 and second spring 33 arranged coaxially with the pins 27, 28 and in contact with suitable engagement means formed in the hole 31, or a single spring biasing against the heads of the pins 27, 28.
  • the slider 16 is provided with a first seat 34, a second seat 35, a third seat 36 and a fourth seat 37 of essentially circular shape and reciprocally arranged two by two along parallel axes to essentially form a square or a rectangle.
  • the seats 34, 35, 36, 37 are suitable to accommodate respectively, in a rotatable manner, the first, the second, the third and the fourth satellite 17, 18, 19, 20 provided with the respective first, second, third and fourth magnetic means 21, 22, 23, 24.
  • the pairs formed, respectively, by the first seat 34 and second seat 35 and by the third seat 36 and fourth seat 37, and consequently the satellites 17, 18, 19, 20 housed in the respective seats, are arranged axially aligned with each other along an axis parallel to the axis defined by the through hole 31 and by opposite sides with respect to the through hole 31.
  • the first, second, third and fourth magnetic means 21, 22, 23, 24 inserted in the respective first, second, third and fourth satellite 17, 18, 19, 20 each comprise a pair of magnets with opposite polarity S-N.
  • Four washers 42, 43, 44, 45 are advantageously provided to maintain and cover the respective satellites 17, 18, 19, 20 in the respective seats 34, 35, 36, 37.
  • the displacement of the slider 16 from the locking position to the unlocking position, and vice versa, is achieved by means of a magnetic actuator 47, known for example from Patent EP 2913461 , provided with further magnetic means arranged according to an appropriate combination and suitable to interact with the first, second, third and fourth magnetic means 21, 22, 23, 24 contained respectively in the first, second, third and fourth satellite 17, 18, 19, 20 to cause the rotation of the latter, as will be better explained later.
  • a magnetic actuator 47 known for example from Patent EP 2913461 , provided with further magnetic means arranged according to an appropriate combination and suitable to interact with the first, second, third and fourth magnetic means 21, 22, 23, 24 contained respectively in the first, second, third and fourth satellite 17, 18, 19, 20 to cause the rotation of the latter, as will be better explained later.
  • the slider 16 has a concavity 46 to avoid interfering, in the unlocking position shown in figure 8 , with the second opening 7.
  • the operation of the device is as follows: in the condition with the door closed with the security device actuated, and therefore with the slider 16 covering the second opening 7 from inside to prevent access to the lock ( figs. 3, 4 ), the first spring 32 pushes axially the head 30A of the first pin 27 into engagement with the first recess 12, while the second spring 33 pushes axially the head 30B of the second pin 28 into engagement with the third recess 14 along the same axis defined by the hole 31.
  • the satellites 17, 18, 19, 20 are arranged so that a circumferential portion of each of them engages the flared portions 29A, 29B of the pins 27 and 28, in particular the first and the third satellite 17, 19 engage the flared portion 29A of the first pin 27, and the second and the fourth satellite 18, 20 engage, from an opposite side, the flared portion 29B of the second pin 28, blocking thereby the sliding of the pins 27, 28 along the hole 31 to prevent the disengagement of the heads 30A, 30B from the recesses 12, 14.
  • the magnetic means 21, 22, 23, 24 are reciprocally arranged in a casual manner depending on the position imposed on them by the latest operation to unlock the magnetic actuator 47 to bring the device to the closing position.
  • the specific magnetic combination prearranged on the actuator 47 is configured to impose a movement of the magnetic means 21, 22, 23, 24 so as to induce a rotation in opposite directions to the satellites 17, 18, 19, 20 to bring the respective cuts 38, 39, 40, 41 to face the flared portions 29A, 29B of the pins 27, 28.
  • the first and the third satellite 17, 19 accomplish respectively a rotation in a clockwise and a counterclockwise direction to bring the respective cuts 38, 40 to face the flared portion 29A, while the second and the fourth satellite 18, 20 rotate respectively in a counterclockwise and clockwise direction to bring the respective cuts 39, 41 to face the flared portion 29B.
  • the arc-shaped or inclined-plane profile of the walls of the cavity 9, or of the guide means 10, 11 if present, makes it possible to advance the pins 27, 28 slidingly along the hole 31 to disengage the heads 30A, 30B from the recesses 12, 14, overcoming the elastic reaction of the springs 32, 33, as exemplified in figure 6 ; in this manner, the second opening 7 is gradually made accessible to make it possible, once the operation is completed, to insert the key to open the lock.
  • the increase of the number of satellites does not also entail an increase in the dimension and size of the device, which however remains compact and can be matched with the standard dimensions of the locks.
  • This is thanks to the particular compact configuration of the combinatory unit, in which the satellites 17, 18, 19, 20 are housed in the slider 16 aligned two by two from opposite sides with respect to the blocking means 25, 26 that block the movement of the slider 16.
  • the blocking means 25, 26 are thus interposed between the two pairs of satellites so as to be able to interact simultaneously with two satellites arranged perpendicularly with respect to the axis defined by the blocking means 25, 26.
  • the device according to the present invention is also of simple construction and easy for the user to use.

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  • Lock And Its Accessories (AREA)

Claims (5)

  1. Dispositif de sécurité adapté à être couplé à une serrure à cylindre, ledit dispositif de sécurité (1) comprenant un boîtier (2) pouvant être associé à ladite serrure et pourvu d'une première ouverture (3) axiale adaptée à loger un cylindre de ladite serrure, ladite première ouverture (3) axiale étant agencée de manière excentrique par rapport au centre dudit boîtier (2), une plaque de propreté de protection (6) adaptée à être couplée audit boîtier (2), ladite plaque de propreté de protection (6) étant pourvue d'une deuxième ouverture (7) traversante agencée de manière excentrique par rapport au centre de ladite plaque de propreté de protection (6) de telle sorte que ladite deuxième ouverture (7) traversante est alignée, en cours d'utilisation, avec ladite première ouverture (3), un coulisseau (16) mobile par rapport audit boîtier (2) entre une position de verrouillage, dans laquelle ledit coulisseau (16) obstrue ladite première ouverture (3) afin d'empêcher, en cours d'utilisation, d'accéder audit cylindre, et une position de déverrouillage, dans laquelle ledit coulisseau (16) permet d'accéder à ladite première ouverture (3), et à une unité magnétique combinatoire (17, 18, 19, 20, 21, 22, 23, 24) mobile avec ledit coulisseau (16), une cavité (9) faisant face, en cours d'utilisation, audit boîtier (2) est prévue sur une surface interne (8) de ladite plaque de propreté de protection (6), ladite cavité (9) ayant une extension sensiblement linéaire et étant disposée sensiblement parallèlement à l'axe médian passant à travers ladite deuxième ouverture (7) traversante et ladite plaque de propreté de protection (6), des moyens de guidage (10, 11) étant prévus de chaque côté de ladite cavité (9), lesdits moyens de guidage (10, 11) comprenant une première surface de guidage (10) disposée d'un côté de ladite cavité (9) et une deuxième surface de guidage (11) disposée du côté opposé de ladite cavité (9), lesdits moyens de guidage (10, 11) comprenant des moyens d'engagement (12, 13, 14, 15) comprenant au moins un premier évidement (12) et un deuxième évidement (13) prévus sur ladite première surface de guidage (10), et au moins un troisième évidement (14) et un quatrième évidement (15) prévus sur ladite deuxième surface de guidage (11), ledit coulisseau (16) comprenant des moyens de blocage (25, 26) adaptés à engager lesdits moyens d'engagement (12, 13, 14, 15) pour bloquer fermement ledit coulisseau (16) dans la dite position de verrouillage ou dans ladite position de déverrouillage, lesdits moyens de blocage (25, 26) comprenant une paire de broches (27, 28) munies de têtes respectives (30A, 30B) ayant une forme complémentaire à la forme desdits moyens d'engagement (12, 13, 14, 15), lesdites têtes (30A, 30B) étant adaptées à engager sélectivement ledit premier évidement (12) et ledit troisième évidement (14), lorsque ledit coulisseau (16) est dans ladite position de verrouillage, et ledit deuxième évidement (13) et ledit quatrième évidement (15) lorsque ledit coulisseau (16) est dans ladite position de déverrouillage, caractérisé en ce que ladite unité de combinaison magnétique (17, 18, 19, 20, 21, 22, 23, 24) comprend au moins quatre satellites (17, 18, 19, 20), à savoir un premier satellite (17), un deuxième satellite (18), un troisième satellite (19) et un quatrième satellite (20), contenant chacun des moyens magnétiques respectifs (21, 22, 23, 24), lesdits au moins quatre satellites (17, 18, 19, 20) étant adaptés à être logés de manière mobile en rotation dans des sièges respectifs (34, 35, 36, 37) prévus sur ledit coulisseau (16), lesdits sièges étant disposés mutuellement à angle droit, dans lequel ledit premier évidement (12) fait face axialement audit troisième évidement (14) et ledit deuxième évidement (13) fait face axialement audit quatrième évidement (15), lesdits moyens de blocages (25, 26) étant contrôlés par lesdits au moins quatre satellites (17, 18, 29, 20), dans lequel chacun desdits premier satellite (17), deuxième satellite (18), troisième satellite (19) et quatrième satellite (20) comprend une coupe respective (38, 39, 40, 41), lesdits moyens de blocage (25, 26) comprenant en outre une première partie évasée (29A) et une deuxième partie évasée (29B) reliant respectivement lesdites têtes (30A, 30B) aux broches respectives (27, 28), ladite première partie évasée (29A) étant adaptée à coopérer sélectivement avec les coupes respectives (38, 40) dudit premier satellite (17) et dudit troisième satellite (19) et ladite deuxième partie évasée (29B) étant adaptée à coopérer sélectivement avec les coupes respectives (39, 41) dudit deuxième satellite (18) et dudit quatrième satellite (20).
  2. Dispositif de sécurité selon la revendication 1, dans lequel ledit coulisseau (16) est adapté à être logé de manière coulissante à l'intérieur de ladite cavité (9) de manière à être mobile le long de ladite première surface de guidage (10) et de ladite deuxième surface de guidage (11) entre ladite position de verrouillage et ladite position de déverrouillage.
  3. Dispositif de sécurité selon la revendication 1, dans lequel lesdits moyens de blocage (25, 26) sont associés de façon coulissante audit coulisseau (16) et mobiles dans des directions opposées le long d'un axe transversal dudit coulisseau (16) contre la sollicitation de moyens élastiques, lesdits moyens de blocage (25, 26) étant disposés axialement opposés auxdites têtes (30A, 30B) faisant face à des côtés opposés.
  4. Dispositif de sécurité selon la revendication 1, dans lequel le passage entre ladite position de verrouillage et ladite position de déverrouillage, et inversement, peut être actionné par un actionneur magnétique (47) pourvu d'une combinaison adaptée à coopérer avec ladite unité combinatoire magnétique (17, 18, 19, 20, 21, 22, 23, 24) pour conférer une rotation auxdits au moins quatre satellites (17, 18, 19, 20) capables de désengager lesdits moyens de blocage (25, 26) desdits moyens d'engagement (13, 14, 15, 16) de telle sorte que le déplacement dudit coulisseau (16) de ladite position de verrouillage à ladite position de déverrouillage, et inversement, est autorisé.
  5. Dispositif de sécurité selon la revendication 4, dans lequel ladite rotation conférée auxdits au moins quatre satellites (17, 18, 19, 20) par ledit actionneur magnétique (47) amène lesdites coupes (38, 40) desdits premier et troisième satellites (17, 19) à faire face à ladite première partie évasée (29A) et lesdites coupes (39, 41) desdits deuxième et quatrième satellites (18, 20) à faire face à ladite deuxième partie évasée (29B) de manière à permettre auxdits moyens de blocage (25, 26) de coulisser pour dégager lesdites têtes (30A, 30B) desdits moyens d'engagement (12, 13, 14, 15) de sorte que le déplacement dudit coulisseau (16) de ladite position de verrouillage à ladite position de déverrouillage, et inversement, est permis.
EP19155698.4A 2018-02-15 2019-02-06 Dispositif de sécurité pour une serrure cylindrique Active EP3527754B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102018000002717A IT201800002717A1 (it) 2018-02-15 2018-02-15 Dispositivo perfezionato di protezione di una serratura

Publications (2)

Publication Number Publication Date
EP3527754A1 EP3527754A1 (fr) 2019-08-21
EP3527754B1 true EP3527754B1 (fr) 2020-07-29

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EP19155698.4A Active EP3527754B1 (fr) 2018-02-15 2019-02-06 Dispositif de sécurité pour une serrure cylindrique

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EP (1) EP3527754B1 (fr)
ES (1) ES2823679T3 (fr)
IT (1) IT201800002717A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTV20110068A1 (it) * 2011-05-20 2012-11-21 Pier Luigi Oliana Struttura di dispositivo di protezione, particolarmente per una serratura di una porta o anta.
ITTV20130018A1 (it) * 2013-02-15 2014-08-16 Pier Luigi Oliana Struttura di serratura per una porta o anta.
EP2913461B1 (fr) * 2014-02-28 2016-10-12 Pier Luigi Oliana Dispositif de sécurité pour une serrure à barillet

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* Cited by examiner, † Cited by third party
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EP3527754A1 (fr) 2019-08-21
ES2823679T3 (es) 2021-05-07
IT201800002717A1 (it) 2019-08-15

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