WO1991009393A1 - Scelle destine a detecter l'acces a un objet - Google Patents
Scelle destine a detecter l'acces a un objet Download PDFInfo
- Publication number
- WO1991009393A1 WO1991009393A1 PCT/FR1990/000885 FR9000885W WO9109393A1 WO 1991009393 A1 WO1991009393 A1 WO 1991009393A1 FR 9000885 W FR9000885 W FR 9000885W WO 9109393 A1 WO9109393 A1 WO 9109393A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seal
- envelope
- seal according
- rings
- recesses
- Prior art date
Links
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
- G09F3/0305—Forms or constructions of security seals characterised by the type of seal used
- G09F3/0341—Forms or constructions of security seals characterised by the type of seal used having label sealing means
Definitions
- the invention relates to a seal intended to detect access to an object or a relative movement between several juxtaposed objects.
- the snap-in half-shell systems offer, by their structure (presence of hinges and a snap-in system, significant clearance with respect to the substrate), several possibilities of access to the unauthorized user, whether is easy to spot. As a result, these systems are easy to defraud without leaving traces or by leaving only traces that are difficult to detect under the conditions due to the environment in which the equipment is used.
- the problem which the invention aims to solve is to propose a seal such that an unauthorized attempt at disassembly or disassembly thereof is detected with certainty and that reassembly thereof is impossible or is immediately identifiable .
- the seal comprises an envelope with dimensional recovery, arranged to cover at least partially the object (s) to protect and having, at least after dimensional recovery, areas of weakness.
- the zones of weakness result from the presence of recesses in the envelope, which delimit envelope regions of small width.
- envelope regions of small width delimit envelope regions of small width.
- the recesses make it possible to see the object, in particular a fluid pipe fitting, after the installation of the seal, so that it is possible to check the state of the fitting, in particular its degree of corrosion, and to detect the presence of leaks, all without having to remove the seal.
- the envelope comprises a central region disposed between two terminal regions, said recesses being located in the central region and delimiting several strips each connecting the two terminal regions.
- the envelope is advantageously constituted by a sleeve.
- the terminal regions are rings and the central region comprises a plurality of bands each connecting said rings.
- each strip is connected to the rings by a portion of reduced section.
- the seal includes regions of initiation of rupture, the presence of which increases the embrittlement of the envelope. Another problem which the invention aims to solve is to be able to detect the unauthorized removal of a seal.
- the seal comprises means arranged to leave a mark on the object after its removal.
- said means comprise a product contained in the seal and capable of marking the object.
- said means comprise an adhesive interposed between the seal and the object.
- Another problem which the invention aims to solve is, in the case of the recovery of objects capable of being moved in one of two opposite directions, to detect fraudulent manipulation both in one direction and in the other.
- each strip is connected to one of the rings by a portion of reduced section arranged near a first edge of the strip, and it is connected to the other ring by a portion of reduced section arranged near a second edge of the strip opposite the first.
- Another problem which the invention aims to solve is to propose such a seal which, although having said zones of weakness, does not tear during the manufacturing process or during assembly.
- the solution to this problem lies in a particular method for applying a seal according to the invention to one or more object (s) which consists in placing the seal above the object (s), to cause the dimensional resumption of the seal. and subjecting the seal to a treatment designed to reveal areas of weakness or increase their fragility.
- FIG. 1 is a perspective view of a seal according to the invention. invention
- Figure 2 is an enlarged detail view of one of the strips of the seal of Figure 1
- Figure 3 is an elevational view of the seal mounted on a fluid pipe fitting
- FIG. 4 is an elevation view of the connector, the seal being shown in longitudinal section before it is applied by dimensional recovery to the connector
- FIG. 5 is a front view of a seal according to a second embodiment of the invention
- FIG. 6 is a side view of the seal of FIG. 5
- FIG. 7 illustrates a use of the seal of FIGS. 5 and 6
- FIG. 8 is an enlarged detail view of a variant of FIG. 7.
- the seal shown in FIGS. 1 to 4 is a sleeve with dimensional recovery which comprises two rings 2, 3 having the same axis 5 and distant from each other, which are interconnected by a plurality of bands or suspenders 4 extending parallel to the axis 5 and distributed around the latter. In this example, there are six suspenders.
- Each strap 4 extends in width over a portion of the periphery of the sleeve and has two ends by which it is connected respectively to two edges 6,7 of the rings, turned towards one another.
- a slit 10.11 partially separates the strap from the edge 6.7 of the adjacent ring.
- the 5th slot 10 extends from a first edge 12 of the strap towards the inside thereof, over a distance corresponding to a half-width of the strap.
- the other slot 11 extends from a second edge 13 of the strap towards the inside thereof, over the same distance as the slot 10.
- sleeve circumference 120 mm.
- width of the rings 10 mm.
- strap length 20 mm.
- strap width 2 mm.
- sleeve thickness 0.5 mm
- dimensional recovery objects that can be used for the invention exist: a) - Those comprising a hollow element with radial recovery having at least one open end and maintained in a radially expanded state by means of stress arranged outside the element by means of a connection between the external surface of this element and the internal surface of the restraint means, which connection can be broken to allow the element to retract radially.
- Such an object can be obtained by injection of polyvinyl chloride on an expanded elastomer tube.
- the hollow element comprises constraint means arranged internally.
- Those with thermal recovery ie those which have been deformed from a first stable configuration to a second thermally unstable configuration and which are capable of resuming the first configuration or of tending again towards it when we apply G heat only.
- they can take various forms:
- the materials used for the heat recovery objects will preferably be polymers (polyolefins - modified or not -, PA, PVC) and may be crosslinked.
- the heat recovery can be obtained by heating with hot air, flame or immersion in a liquid at the appropriate temperature.
- the heat source can also be incorporated into the polymer used for the manufacture of the object with thermal recovery, for example in the form of a product distributed on the external face of the object and reacting exothermically with water.
- thermal recovery for example in the form of a product distributed on the external face of the object and reacting exothermically with water.
- FIG. 3 illustrates a use of the seal according to the invention with a view to detecting an unauthorized disassembly of a connection between two fluid lines 21, 22, one of them being for example directly connected to a reservoir, the connection between the two conduits being produced by means of a nut 23.
- the sleeve 1 of FIG. 1 Before closing the connector, the sleeve 1 of FIG. 1 is slid over one of the pipes 21, 22. After closing of the connector, the sleeve 1 is arranged opposite it, so that its straps 4 are opposite the nut 23, preferably opposite the sections 25, 26 of the nut.
- the rings 2,3 are preferably retracted first on the pipes 21,22, then that of the straps 4 on the nut 23.
- the regions of ⁇ straps comprising the slots 10, 11 are the seat of particularly high stresses, such as an unauthorized attempt to manipulate the sleeve or the nut will lead to rapid rupture of the straps 4.
- the sleeve has a brittleness especially after its retraction, while before this its resistance is sufficient not to tear during the manufacturing process and during assembly.
- the particular arrangement of the slots 10, 11 on the sleeve favors the breaking of the straps whatever the direction in which the nut 23 is turned and whatever the direction of mounting of the sleeve: thus, when the latter is turned in the direction of arrow 24 ( Figure 2), it is the end of the straps 4 carrying the slot 11 which will have the best chance of detaching from the sleeve, because the direction of the force tends to open the breach more produced by the presence of the slit.
- FIG. 4 Another advantage of the sleeve according to the invention appears in FIG. 4, in the case where the space available on either side of the connector is limited to a length less than that of the sleeve. Due to the presence of the straps 4, the rings 2,3 can be brought closer to each other, which causes the straps to fold back on themselves and therefore a reduction in the length of the sleeve.
- all kinds of recess shapes may lead to the areas of weakness of the seal being obtained.
- these recesses may consist of a large number of juxtaposed holes of small dimensions.
- the recesses will be such that, when viewed in projection in a plane perpendicular to the axis of the sleeve, they produce a reduction in section of the sleeve at least equal to 1% relative to a section of the sleeve which would be devoid of recesses.
- the reduction in section will be greater than 50%; it reaches 95% in the example mentioned above, measured in the region of the straps 4.
- suspenders are particularly advantageous since these give the seal a fragile appearance which dissuades the unauthorized third party from handling the covered object.
- the seal according to the invention may have weaknesses resulting, not from the presence of a recess on its surface, but from the very nature of the material constituting the seal or from its small thickness. .
- the weaknesses will preferably be produced only during the retraction on the object to be covered or after it and may result in particular from the retraction process used or from a treatment intended specifically to produce these weaknesses (heating, projection of an agent attacking the material, etc.), for example by making the material brittle or weakly resistant to traction.
- the seal In the case where the seal is intended to be threaded on one end of the object (s), it may take the form of a cap.
- the seal shown in a variant in FIGS. 5 to 7 is a ring-shaped belt 30 having zones of weakness distributed around the periphery and formed on the one hand by zones of reduced thickness 31, and on the other hand by slots 32.
- zones of reduced thickness 31, which extend peripherally over a very short length the thickness of the belt 30 is reduced by 60% in this example.
- the slots 32 extend in this example over 40% of the width of the belt, from any edge thereof towards the inside.
- the slots 32 are grouped peripherally in pairs, in the sense that each slot extending from one edge of the belt 30 faces another slot extending from the other edge of the belt.
- the belt 30 has been arranged by dimensional recovery on a box 33 comprising a 0 cover 34.
- the box 33 can in particular contain connections between two conduits or cables, or serve to store and transport dangerous or precious substances.
- the belt 30 is arranged so as to overlap the cover 34. Due to the dimensional recovery, the zones of reduced thickness 31 have been stretched peripherally and the slots 32 have been opened.
- the first is to interpose an adhesive between the belt and the box.
- the second consists in using a box 35 having a groove 36 completely surrounding it, arranged to receive the belt 30.
- an improvement of the invention consists in that the seal leaves traces of its installation on the substrate. , even after its total withdrawal.
- the effect is obtained by the presence of a substance, at least on the inner face of the seal in contact with the substrate, such that, once the seal has been removed, the parts of the surface of the substrate having been in contact with the seal look different from other parts of the substrate surface.
- the substances used can be very different: - polymer substrates: a dye capable of migrating within the polymer constituting the substrate is used, this phenomenon being advantageous by the pressure due to the dimensional recovery as well as by the temperature necessary for this (for example dye based on cadmium red, cadmium yellow etc.)
- a substance capable of creating a slight corrosion is used surface substance of the substance • ra.t, for example a substance having a slight acidity, a substance comprising compounds of ammonia capable of causing a slight depletion of zinc in alloys based on copper and zinc, such as brass.
- an adhesive can be used, part of which remains on the substrate after removal of the seal, either because it adheres more to the substrate than to the seal, or because the adhesion between the substrate and the adhesive is greater than the intrinsic strength of the adhesive.
- the invention finds its application in particular in the covering of fluid conduit fittings, or of electrical or optical cable fittings, of threaded ends of compressed gas bottles (medical gas for example) and in the covering of boxes.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Gasket Seals (AREA)
- Sealing Material Composition (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE91901608T DE69006857D1 (de) | 1989-12-14 | 1990-12-06 | Siegel zur feststellung des zugangs zu einem gegenstand. |
AT91901608T ATE101937T1 (de) | 1989-12-14 | 1991-07-12 | Siegel zur feststellung des zugangs zu einem gegenstand. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR89/16539 | 1989-12-14 | ||
FR8916539A FR2656132B1 (fr) | 1989-12-14 | 1989-12-14 | Scelle destine a detecter l'acces a un objet ou un mouvement relatif entre plusieurs objets juxtaposes. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1991009393A1 true WO1991009393A1 (fr) | 1991-06-27 |
Family
ID=9388499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1990/000885 WO1991009393A1 (fr) | 1989-12-14 | 1990-12-06 | Scelle destine a detecter l'acces a un objet |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0506784B1 (fr) |
AU (1) | AU7031991A (fr) |
DE (1) | DE69006857D1 (fr) |
FR (1) | FR2656132B1 (fr) |
WO (1) | WO1991009393A1 (fr) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1213931A (fr) * | 1957-11-13 | 1960-04-05 | Fapex Trust Registered | Dispositif de capsulage pour fermeture inviolable, particulièrement pour garantir contre la violation de la fermeture de contenants, bouteilles et similaires |
US3149869A (en) * | 1962-11-21 | 1964-09-22 | Coleman R Chamberlin | One-time use plastic lock |
US3935960A (en) * | 1973-09-17 | 1976-02-03 | Minnesota Mining And Manufacturing Company | Tamper indicator tape |
GB2100380A (en) * | 1981-06-17 | 1982-12-22 | Kesselman David A | Pipe connection tamper indicator |
WO1983002436A1 (fr) * | 1982-01-19 | 1983-07-21 | Merctech Inc | Capuchon de securite pour conteneur, en particulier pour des medicaments |
-
1989
- 1989-12-14 FR FR8916539A patent/FR2656132B1/fr not_active Expired - Fee Related
-
1990
- 1990-12-06 AU AU70319/91A patent/AU7031991A/en not_active Abandoned
- 1990-12-06 WO PCT/FR1990/000885 patent/WO1991009393A1/fr active IP Right Grant
- 1990-12-06 DE DE91901608T patent/DE69006857D1/de not_active Expired - Lifetime
-
1991
- 1991-07-12 EP EP19910901608 patent/EP0506784B1/fr not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1213931A (fr) * | 1957-11-13 | 1960-04-05 | Fapex Trust Registered | Dispositif de capsulage pour fermeture inviolable, particulièrement pour garantir contre la violation de la fermeture de contenants, bouteilles et similaires |
US3149869A (en) * | 1962-11-21 | 1964-09-22 | Coleman R Chamberlin | One-time use plastic lock |
US3935960A (en) * | 1973-09-17 | 1976-02-03 | Minnesota Mining And Manufacturing Company | Tamper indicator tape |
GB2100380A (en) * | 1981-06-17 | 1982-12-22 | Kesselman David A | Pipe connection tamper indicator |
WO1983002436A1 (fr) * | 1982-01-19 | 1983-07-21 | Merctech Inc | Capuchon de securite pour conteneur, en particulier pour des medicaments |
Also Published As
Publication number | Publication date |
---|---|
DE69006857D1 (de) | 1994-03-31 |
FR2656132A1 (fr) | 1991-06-21 |
EP0506784B1 (fr) | 1994-02-23 |
EP0506784A1 (fr) | 1992-10-07 |
AU7031991A (en) | 1991-07-18 |
FR2656132B1 (fr) | 1994-02-04 |
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