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
• • 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
  • G09F3/0382—Seals with transparent casing
• • 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

Definitions

• This invention refers to a seal.
• Seals of various kinds are as known used to render it difficult for an unauthorized person to open a door, a shutter or a closure of another kind. Especially in connection with goods containers which may contain considerable values it is important that the seal cannot be broken in an easy way and then restored to such a condition that it can pass a checkpoint.
• the seals used nowadays generally comprise a strip-shaped part which at both ends is shaped to locking means which when engaged lock each other in a non-detachable manner.
• the strip shaped part may be manufactured from a thin metal sheet material or from plastic material but in both cases it is relatively easy to restore the strips after cutting into a seemingly unbroken state by soldering, heating or the like. Thus there have been big losses amongst others for the insuring companies due to unauthorized broken seals.
• the primary object of the invention thus has been to overcome this dis.- ' advantage of the known seals and to provide a seal which effectively ind cates also an attempt to break the same.
• Fig. 1 is a section through a part of a container lock with a seal according to a first embodiment of the invention.
• Fig. 2 is a longitudinal section through one of the two main parts of the seal ,
• Fig. 3 shows the main part according to fig. 2 seen from the under side thereof and
• Fig. k is a longitudinal section through the second main part of the sea
• Fig. 5 is a longitudinal section through a plug connectable to the seco main part
• Fig. 6 finally shows a label for the seal in an extended position.
• Fig. 7 shows in perspective and partly broken a second embodiment of th invention while,
• Fig. 8 in perspective view shows two members of the seal according to fig. 7 and
• Fig. 9 a seal with corresponding parts of a container lock.
• the seal illustrated in the drawing includes a main part, generally de- signated as 1 (see also fig. 2), which is made from a translucent rnate.- rial, perferably transparent plastic material. It has a tubular portion which continues in a hollow head 3, which as appears from fig. 3 prefer ably has an elliptical section.
• the head has for a purpose to be descri internally substantially triangular recesses 4a, b which however as see in fig. 2 with portions 5a,5b which may hav.e rectangular shape extend into a tubular extension 6 of the tubular portion 2.
• Said tubular exten sion 6 further comprises a bore 7, which extends from the free end ther
• the seal further includes a second main part, which like the main part 1 preferably is made from a plastic material, but in an opaque or at leas only partly translucent material.
• This main part which is generally de signated as 8 and is shown more in detail in fig. 4 has just like the fi main part a tubular portion 9, which continues in a head 10, which pref ably may have an elliptical section. As appears from fig. 4 there is in the transition between the tubular portion 9 and the head 10 provided a annuhar recess 11. In order to avoid excessive material thickness the h preferably is recessed 12.
• the cavity 13 of the tubular portion 9 extends i the head up to the vicinity of the upper side thereof.
• the seal finally includes a plug, generally designated as 14 and a steel pin 15-
• the plug 14 in combination with the pin 15 is intended to close the mouth of the tubular portion 9 and has for this purpose a cylindric portion 16 which frictionally engages the mouth and a wider portion 17 from w ich extend a number (in the illustrated embodiment three) of resil ient wings 18 for a purpose to be explained.
• the plug which preferably is made from such a plastic material which can give a watertight closure, is however perforated by two holes 19, 20 from which the first-mentioned is so dimensioned in relation to the diameter of the pin 15 that it may be closed by said pin in a watertight manner.
• the seal is intended to contain an indicating means 21 which may be of any suitable kind but in the illustrated example consists of a coloured liquid.
• the parts 8,14,15 and the indicating means 21 are broght together to form a unit and to this end a certain amount of indicating fluid is first introduced in the cavity 13 whereupon the plug 14 is introduced into the mouth of the tubular portion 3. Since the amount of liquid is so measured that it accomodates in the cavity 13 also when the plug 14 has been brought into position l iquid will not pass through the holes 19,20 of the plug. However- the amount of l iquid is such that the cavity 13 will be completely filled when the pin is introduced and when the pin is fully inserted the l iquid will be under a pre-determined pressure for a purpose to be described.
• the label 22 consists of a strip made from a transparent plastic foil or the l ike and has identifying denominations 24 printed at two places, which in the use position of the label will be opposite to each other. It is provided to contact according to fig. ⁇ the interior of the head 3 ex ⁇ cept for the portions where the recesses 4a,4b are made. Since the length of the label substantially corresponds to the circumference of the inner surface of the head it is apparent that the denominations 24 will be situ ⁇ ated opposite to each other which means that the denomination in question will be visible from the front as well as from the rear.
• the closure 23 is appl ied for instance by glueing or welding. The units now described are intended to be brought together when the seal is appl ied.
• Th i's is carried out by bringing the main part 1 with parts associated therewith up into the holes of the above each other located locking projections 25a,25b, which constitute the so called container lock, whereupon the second main part 8 with parts associated therewith from above is brought into engagement with the other main part. Since the inner diameter of the tubular part 2 only slightly exceeds the outer diameter of the tubular portion 9 the resil ient wings 18 will during this engagement be pressed sligthly inwards such that they by friction may be displaced through the tubular portion 2 to the extension of the latter.
• the head 10 may be provided with a molded-in or pressed in steel washer, a steel pin or the 1 ike.
• a coloured l iquid has been mentioned as an indicating medium but it is also possible to use a liquid which when brought into contact with the material of main part 1 generates an indicating effect as well as a l iquid which in combination with another liquid contained in for instance the main part 2 will bring forth the desired marking and also gases, powders or like can be used for the purpose.
• the seal shown in figures 7 ⁇ 9 inclusive differs from the one now de- scribed mainly by the fact that the steel pin 15 ' is loosely provided in the cavity 21 of the main part 8, that the plug 14 is substituted by another construction and that the filling with indicating fluid is carr out in another manner than the way described.
• the plug 14 is substituted by an end closure 26, which comprises a portion 27 which is insertable in the tub lar portion 9 and terminates in a flange from which extends an axial ly extending rib 28, which limits the introduction of the end closure in part 9.
• the end closure comprises a blind hole 29 but as appears from fig. 7 this hole is so shaped and cal ibrated that the lower end wall of the end closure will be very thin.
• the en closure further comprises a recess 30 for a purpose to be explained.
• a ring 31 made from a resil ient material is slotted at 32 and thas pre ⁇ ferably diametrically opposed to the slot an axial ly projecting shoulde
• the height of the ring is somewhat less than the axial extension of the rib 28 and the inner diameter exceeds the outer diameter of the part 27 and it will thus be possible to thread the ring into the end closure such that the shoulder 33 thereof is received in the recess 30 at the same time as the slot 32 thereof with some clearance surroun the ribs 28.
• the ring can from the untensioned normal position thereof, in which the outer diameter thereof exceeds the inner diameter of the tubular portion 2 of the main part 1, be pressed together so much that said outer diameter will be less than said inner diameter of the tubul part 2, which as appears from fig. 7 lacks the recess 7 according to fig. 2.
• the seal now described is adapted for use by turning the main part 8 upside down whereupon indicating fluid is poured into it.
• the steel pi is then dropped into the fluid at the same time as the end closure 26 with resilient ring 31 applied as described is operated to close the opening of the tubular part 9 at the same time as it guides the steel pin according to fig. 7.
• the main part 8 then can be brought into enga ment with the main part 1". in a manner just described and the resilient ring will then be compressed to such extent that it can pass through t portion 9. As soon as it however has passed the lower mouth thereof it will spring out and engage the lower edge portion thereof in a blockin manner.
• the seal now described is safer than the seal according to fig since the steel pin 15' need not sealingly pass through the space con- taining indicating fluid and since the resilient ring 31 will give a considerably safer function than the resil ient wings 18.

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20359316

Family Applications (1)

Country Status (9)

Cited By (6)

Families Citing this family (9)

Citations (2)

Family Cites Families (5)

• 1985
  • 1985-02-28 SE SE8500993A patent/SE446849B/sv not_active IP Right Cessation
• 1986
  • 1986-02-26 NZ NZ215296A patent/NZ215296A/en unknown
  • 1986-02-27 JP JP61501615A patent/JPH0669823B2/ja not_active Expired - Lifetime
  • 1986-02-27 AU AU55817/86A patent/AU597572B2/en not_active Ceased
  • 1986-02-27 EP EP86902049A patent/EP0310597B1/en not_active Expired - Lifetime
  • 1986-02-27 WO PCT/SE1986/000085 patent/WO1986005164A1/en active IP Right Grant
  • 1986-09-24 DK DK454586A patent/DK157990C/da active
• 1987
  • 1987-08-28 FI FI873733A patent/FI85458C/sv not_active IP Right Cessation
• 1988
  • 1988-03-02 US US07/166,785 patent/US4826027A/en not_active Expired - Fee Related

Patent Citations (2)

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