Classifications

• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
  • G09F3/02—Forms or constructions
  • G09F3/03—Forms or constructions of security seals
  • G09F3/0305—Forms or constructions of security seals characterised by the type of seal used
  • G09F3/0317—Forms or constructions of security seals characterised by the type of seal used having bolt like sealing means
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B73/00—Devices for locking portable objects against unauthorised removal; Miscellaneous locking devices
  • E05B73/0017—Anti-theft devices, e.g. tags or monitors, fixed to articles, e.g. clothes, and to be removed at the check-out of shops
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T24/00—Buckles, buttons, clasps, etc.
  • Y10T24/46—Pin or separate essential cooperating device therefor
  • Y10T24/4604—Pin or separate essential cooperating device therefor having distinct guiding, holding, or protecting means for penetrated portion
  • Y10T24/4605—Means detachable from or flaccidly connected to pin [e.g., hatpin type]
  • Y10T24/4609—Means detachable from or flaccidly connected to pin [e.g., hatpin type] including relatively movable guiding, holding, or protecting components or surfaces
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T24/00—Buckles, buttons, clasps, etc.
  • Y10T24/46—Pin or separate essential cooperating device therefor
  • Y10T24/4604—Pin or separate essential cooperating device therefor having distinct guiding, holding, or protecting means for penetrated portion
  • Y10T24/4605—Means detachable from or flaccidly connected to pin [e.g., hatpin type]
  • Y10T24/4609—Means detachable from or flaccidly connected to pin [e.g., hatpin type] including relatively movable guiding, holding, or protecting components or surfaces
  • Y10T24/4611—Means detachable from or flaccidly connected to pin [e.g., hatpin type] including relatively movable guiding, holding, or protecting components or surfaces having operator for moving holding component or surface
  • Y10T24/4613—Moves pivoting holding component
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T24/00—Buckles, buttons, clasps, etc.
  • Y10T24/46—Pin or separate essential cooperating device therefor
  • Y10T24/4604—Pin or separate essential cooperating device therefor having distinct guiding, holding, or protecting means for penetrated portion
  • Y10T24/4605—Means detachable from or flaccidly connected to pin [e.g., hatpin type]
  • Y10T24/4609—Means detachable from or flaccidly connected to pin [e.g., hatpin type] including relatively movable guiding, holding, or protecting components or surfaces
  • Y10T24/4618—Means detachable from or flaccidly connected to pin [e.g., hatpin type] including relatively movable guiding, holding, or protecting components or surfaces with pivotal connection therebetween
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T24/00—Buckles, buttons, clasps, etc.
  • Y10T24/50—Readily interlocking, two-part fastener requiring either destructive or tool disengagement
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T292/00—Closure fasteners
  • Y10T292/08—Bolts
  • Y10T292/1043—Swinging
  • Y10T292/1075—Operating means
  • Y10T292/1082—Motor
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T292/00—Closure fasteners
  • Y10T292/48—Seals
  • Y10T292/492—Driving

Definitions

• the present invention relates to a locking device, preferably for releasable attaching a plastic wafer to articles providing security
• a 5 against the theft thereof and which device comprises a locking mecha ⁇ nism mounted in a house and intended to be attached to the wafer, and a pin member, preferably with a smooth surface, interacting with the locking mechanism.
• the locking mechanism of the locking device is contained in a house which is arranged in the plastic wafer, and this assembly is 15 placed at one side of the article to be protected, after which a so- called pin is passed through the article and into the locking mecha ⁇ nism.
• the enlarged head of the pin placed at one side of the article together with the plastic wafer/locking mechanism assembly placed at the other side of the article hereby will prevent that the article is 20 brougth out of a store or another especially protected area herein, as the electronic circuit in the plastic wafer by passing particular moni ⁇ toring antennas will actuate an alarm system.
• the article has been purchased authorized personnel having a particular release device will release the connection between the pin and the locking mechanism 25 and remove the pin so that the wafer may be removed from the article.
• the shaft of the pin is provided with circu ferentially extending grooves at spaced positions. These grooves are intended for interlocking of the pin and the locking me ⁇ chanism, and they are to be made with a very high accuracy of machin- 30 ing to obtain a secure interlocking. Moreover, the presence of the grooves in the shaft may give rise to destruction of a textile web as the shaft passes therethrough either by rupture of threads or by pull- ⁇ ing out threads. This occurs especially in case with finely woven ar ⁇ ticles. 35 To prevent these drawbacks more locking devices are made wherein the cooperating pin member is provided with a smooth surface. However, these locking devices may be released by a mechanic action possibly by means of a specially provided tool and, accordingly, they are not well suited for securing goods against theft as it is relatively easy to make a non-authorized release of the locking mechanism.
• Other locking devices with a smooth shaft are provided with spring biased balls or rollers which wedge the pin either by wedging between more balls or between a roller and a wall of the house. These locking devices may be released by magnetism in that the balls, a holder for the balls or the roller are made of a magnetic material.
• the locking device comprises two locking plates each having a long side adjacent each other, each adja ⁇ cent long side is provided with a centrally placed recess for engage- ment with the shaft of the pin, a part of the house providing inclined planes directed symmetrical against the centre line of the house, se ⁇ paration means provided at the centre line of the house and shaped to separate the locking plates, when these abut against the inclined pla ⁇ nes in their position for release of the pin, and spring means biasing the locking plates against their position for locking of the pin.
• the house may easily be manufactured by casting of a suitable metal or plastic material, and the two locking plates may be manufactured, simp ⁇ ly by punching. At the manufacturing it should be ensured that the recesses of the locking plates together form an opening with such a size that they are able to squeeze the shaft.
• This locking device will give a high security against non-authori ⁇ zed release in that it will only be possible to release the locking device with a non-mechanical acting apparatus, e.g. a magnetic or pneu ⁇ matic apparatus as explained in greater detail later.
• a non-mechanical acting apparatus e.g. a magnetic or pneu ⁇ matic apparatus as explained in greater detail later.
• Fig. 1 is a schematic section through a locking device accord- " » , 5 ing to an embodiment of the invention
• Fig. 2 is a plan view of two locking plates seen from above
• Fig. 3 is a schematic section, corresponding to Fig. 1, through a locking device according to a further embodiment of the invention
• Fig. 4 is a schematic section, corresponding to Fig. 1, through a further embodiment of the invention.
• Fig. 1 shows a locking device generally indicated with the refe ⁇ rence number 1 and intended for use in connection with releasable at ⁇ taching of plastic wafers (not shown) to articles providing a security 15 against the theft of the connected articles.
• the locking device comprises a pin 2, a substantially cylindrical house 3, which is made of plastic or metal and which consists of an outer house part 4 and an inner house part 5, two locking plates 6a,6b each provided in form of a substantially half-circular plate made of a 20 magnetic material, preferably hardened steel, and spring means in the form of a spiral spring 7.
• the locking device of Fig. 1 is intended to magnetic activation for release of the engagement between the pin 2 and the locking plates 6a,6b.
• the pin 2 is advantageously made with a smooth shaft 8 and a 25 relatively large head 9 for engagement with the article to be protec ⁇ ted against theft. With such a construction of the pin very little damage of the article occurs.
• the house 3 is provided with an insertion opening 10 for inserting of the shaft 8 into the house 3 for interlock- 30 ing therewith.
• the shaft 8 passes through the house and out through an opening 10a in the inner house part 5.
• the opening 10a in the inner house part 5 may be omitted, however, the opening is advantageous, in ⁇ that it is possible to use pins 2 with a longer shaft, whereby it is possible to protect articles of different thickness.
• the outer house part 4 and the inner house part 5 are interconnec ⁇ ted by whichever known means not allowing an immediate disconnection, e.g. welding, deforming of the interfaces e.t.c.
• each locking plate 6a,6b consists of a substantially flat half-circular plate having a long side 11a,lib adjacent the corresponding long side lib,11a of the other of the lock ⁇ ing plates.
• a recess is provided at a cen ⁇ tral position in the form of a substantially half-circular opening 12a,12b, the diameter of which substantially corresponds to the dia ⁇ meter of the shaft 8 intended to cooperate with these locking plates 6a,6b.
• the locking plates 6a,6b are made of a circular plate or disc with a diameter substantially corresponding to the inner diameter of the outer house part 4. This plate or disc is provided with a central circular opening with a diameter corresponding to the diameter of the shaft 8. Then the disc is divided, along a diameter in such a way, that the two substantially half-circular openings 12a,12b produced hereby, when the two long sides of the locking plates are placed abutting each other, will provide a section, which is slightly smaller than the sec ⁇ tion of the shaft 8. Hereby a ve y solid engagement between the shaft 8 and the locking plates may be obtained.
• each locking plate may along its long side be chamfered at the top side facing the outer house part 4.
• an edge 19a,19b is obtained which substantially is parallel with the long side 11a,lib, and the importance of this edge will be explained hereinafter.
• central recesses- may be provided with a form different from the circular form. However, it is to be ensured that the two central recesses together will form a section which is slightly smaller than the section of the shaft 8 of the pin 2 used.
• a recess 13a,13b is provided at each end of the long side of a locking plate. This recess is intended to cooperate with separation means (explained hereinafter) placed on the inner house part 5 to pro ⁇ vide a secure release of the engagement between the shaft 8 and the central recesses 12a,12b in the locking plates.
• the inner house part 5 has an outer diameter substantially cor ⁇ responding to the inner diameter of the outer house part 4, so that the inner house part may be placed in the outer house part with a loo ⁇ se fit.
• the inner house part 5 is made as a cylindrical wall 15 provi- ded with a bottom 14.
• An inwardly protruding part 14a, provided inte ⁇ grally with the bottom 14, is designed for guiding the spring 7.
• Fig. 3 shows a further embodiment of the locking device according to the invention.
• This locking device is intended for pneumatic acti ⁇ vation by inducing of a vacuum to the interior of the house 3 so as to release the connection between the shaft 8 and the locking mechanism.
• a particularly secure locking device is hereby obtained.
• This embodiment corresponds substantially to the one shown in Fig. 1, though the spring is not shown for clarity.
• this embodiment is different, in that a resilient air ⁇ tight membrane 20 with a central opening 21 for the passage of the shaft 8 is placed immediately above the locking plates.
• a resilient air ⁇ tight membrane 20 with a central opening 21 for the passage of the shaft 8 is placed immediately above the locking plates.
• one or more holes 22 are provided for induc- ing a vacuum to the interior of the house below the membrane/locking plate assembly 20,6a,6b.
• this assembly will be moved downward against the action of the spring in a way corresponding to the magne ⁇ tic activation. Accordingly, the pin can be withdrawed from the house.
• the holes 22 are provided in any specific pattern to impede a non-authorized inducing of vacuum.
• Fig. 4 shows a further embodiment, wherein the house preferably is made of plastic, and wherein the spring means are made of resilient flaps 23, which are made integrally with the inner house part 4.
• This locking device is shown for magnetic activation, but may as well be constructed for pneumatic activation.
• the bottom 14' of the inner house part 4 is made with a substantially flat confi ⁇ guration.

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• Engineering & Computer Science (AREA)
• Computer Security & Cryptography (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Theoretical Computer Science (AREA)
• Burglar Alarm Systems (AREA)
• Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8120844

Family Applications (1)

Country Status (3)

Cited By (6)

Families Citing this family (23)

Citations (4)

Family Cites Families (6)

• 1986
  • 1986-07-08 DK DK325586A patent/DK155388C/da active
• 1987
  • 1987-07-08 WO PCT/DK1987/000085 patent/WO1988000381A1/en unknown
• 1988
  • 1988-09-30 US US07/251,879 patent/US4884833A/en not_active Expired - Fee Related

Patent Citations (4)

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