EP2678601A1

EP2678601A1 - Tamper-indicating element for a compressed-gas cylinder

Info

Publication number: EP2678601A1
Application number: EP12707268.4A
Authority: EP
Inventors: Alexander Kriese
Original assignee: Messer Gaspack GmbH
Current assignee: Messer Gaspack GmbH
Priority date: 2011-02-25
Filing date: 2012-02-24
Publication date: 2014-01-01
Anticipated expiration: 2032-02-24
Also published as: EP2678601B1; HRP20150990T1; ES2547578T3; HUE027640T2; DE102011012318A1; SI2678601T1; PL2678601T3; WO2012113928A1

Abstract

The invention relates to a tamper-indicating element for a compressed-gas cylinder, on the neck ring or cylinder neck of which a protective cap is removably arranged. The tamper-indicating element according to the invention consists of an indication ring arranged between the protective cap and the shoulder of the neck ring or of the cylinder neck. The indication ring comprises at least two ring segments, which are connected to each other by connecting profiles with a predetermined breaking point. The connecting profiles comprise a pressing area protruding from the indication ring and two legs extending from the latter and, at least over a certain portion, converging in the direction of the indication ring. The connecting profiles formed in this way ensure that the indication ring contracts when the protective cap is placed on, and consequently firmly engages the neck ring, even after breaking of the predetermined breaking point, up until the protective cap is removed. After removal of the protective cap, the ring broken at the predetermined breaking points falls into individual pieces and comes off the compressed-gas cylinder.

Description

Originality marking for a compressed gas cylinder

The invention relates to a tamper evidence for a compressed gas cylinder, on the neck ring a protective cap is releasably secure, with a in the

intended installation state between an end face of the protective cap and a shoulder of the neck ring of the compressed gas cylinder arranged, formed from at least two annularly arranged in a plane segments identification ring which is equipped with at least one predetermined breaking point.

Compressed gas cylinders, which are usually made of steel or aluminum and used for storing pressurized gases and liquids are, according to legal requirements by a gas-specific paint and a

Sticker marked on the gas contents. In addition, some suppliers also attach a label with crack marks, which is positioned overlapping on the protective cap and the compressed gas cylinder neck. Furthermore are

Closing plugs made of plastic in use, which are plugged onto the connection thread of the cylinder valve. You have a predetermined breaking point, which should tear when removing the plug. Such plugs work in practice very poorly. The presence or the integrity of this

Sticker or this plug is used to display their original state after filling in the supplier.

From DE 100 62 867 A1 a tamper-evident marking for compressed gas cylinders is known, on the neck ring or bottleneck a protective cap, such as a screw or bayonet lock, is releasably fastened. The originality marking described therein comprises an identification ring, which is positioned on the neck ring, and which is provided with at least two predetermined breaking points. The identification ring preferably made of a plastic injection molded part also has one or more identification flags, which may include information on the origin and / or content of the compressed gas cylinder, such as company name, logo, year of the next test, etc. When placing or screwing the Protective cap on the neck ring or bottle neck is exerted on the identification ring such a pressure that the identification ring on breaks the predetermined breaking points, however, is clamped between the cap and neck ring so that it remains positioned on the shoulder of the neck ring or the neck of the bottle. When removing the protective cap from the neck ring or the bottleneck of the compressed gas cylinder and the concomitant relief on the items of the identification ring these fall from the shoulder of the neck ring or the neck and thus from the gas cylinder. The object of DE 100 62 867 A1 is intended to ensure in this way a simple and inexpensive and tamper-proof labeling of all common gas cylinders.

However, this object has the disadvantage that the ring is not securely fixed in its intended position and there is a risk that he already moved when screwing the cap from its position and squeezed laterally out of the gap between the neck ring and cap, causing the Function of the predetermined breaking point is no longer ensured.

From DE 196 1 1 970 A1 a further tamper-evident for steel bottles is known which comprises a composite of several segments ring which is clamped between a flange of the neck ring of the steel bottle and an end face of a protective cap. The ring segments are by means of

Connecting links connected via predetermined breaking points. When placing the protective cap, the predetermined breaking points are destroyed and the ring segments are connected only via tooth profiles in connection with each other

Detach the protective cap from each other and let the ring disintegrate into its individual segments.

In this article, the tooth profiles prevent premature detachment of the identification ring from the neck ring. However, there is the danger that the predetermined breaking points do not break completely and / or the individual ring segments connecting tooth profiles caught together and hold the Kenzeichnungsring even with removed cap on the neck ring and thus fake a originality that is actually no longer available. The invention is therefore based on the object to provide a tamper-evident for compressed gas cylinders, which are the disadvantages of the prior art

overcomes.

This object is achieved in a tamper evidence of the type and purpose of the above-mentioned fact that the mutually facing ends of adjacent segments of the identification ring are spaced apart to form a gap, which gap with the two ends interconnecting profile element with arranged therein

Breaking point is bridged, wherein the profile element has a projecting from the ring plane contact surface and two each having the contact surface with one end of the segments connecting and from the contact surface in the direction of the ring plane at least partially to each other running leg. In particular, in this case one of the two limbs can be in a shape which promotes elasticity, e.g. in the form of an "S", be carried out, whereby the ring elements when opening safely separate from each other.

The tamper-evident marking according to the invention comprises an identification ring constructed from a plurality of ring segments, the ring segments being spaced apart from one another in the direction of rotation, forming a gap. Adjacent segments are connected to each other via profile elements with which the gap between the segments is bridged. The profile elements comprise a here referred to as contact surface portion which rests in the application, ie when placing or screwing the cap on the end face of the cap or on the shoulder of the neck ring, and two each outgoing from this leg. Each of the legs connects the contact surface with the end of one of the segments separated from each other by the gap. When at least approximately complete placement or screwing the cap of the identification ring in the axial direction, that is compressed perpendicular to the ring plane, the segments of the identification ring and axially spaced from them contact surfaces of the profile elements move toward each other. In this case, such a pressure is exerted on the identification ring, that at least one of the predetermined breaking points is broken. Because of towards the ring plane or the segments towards each other running sections of the

Legs move the ends of the segments under the action of

Pressing force towards each other; the identification ring is contracting overall. Despite the breakage of the predetermined breaking point / n, the identification ring thus remains firmly clamped between the protective cap and the neck ring. With the release of the protective cap these forces are eliminated, which at the or the predetermined breaking point / n

Broken originality marking separates from the neck ring and indicates to a user that the bottle has already been opened. In addition, when fitting the protective cap, a positive connection between the segments or the segments and the profile element, e.g. manufactured according to the tongue and groove principle so that the originality marking remains in place until the protective cap is loosened.

The originality marking according to the invention thus ensures a simple, inexpensive and tamper-proof marking for all common compressed gas cylinders. It is for the operability of the

according to the invention, by the way, by no means required that all predetermined breaking points break in use, it is generally sufficient to break one or fewer predetermined breaking points / n in order to

ensure that the marking ring is removed when unscrewing the

Protective cap from the neck ring triggers and thus indicates the lack of originality of the bottle.

Preferably, the identification ring is made in one piece, preferably made of injection molding. The plastic material used in this case should have a certain elasticity to ensure easy attachment of the originality marking on the neck ring and the function of resetting the positive connection. Also advantageous is the use of a biodegradable plastic as a material, which ensures that fallen pieces of the identification ring does not permanently pollute the environment.

An advantageous development of the invention provides that the predetermined breaking point arranged in the contact surface or a leg of the profile element Weak zone includes. Such a weak zone may, for example, a notch or a portion with a reduced material thickness in the

Be pressing surface or in one or both of the legs, or the profile element may comprise due to a special geometry zones which have a lower breaking strength than the surrounding areas, such as a kink in relation to the pressure exerted by the cap on the identification ring pressure. In particular, the zone at which a leg abuts the contact surface or the ring segments, can be designed at an angle, which is usually a lower stability in these zones with applied pressure. If the originality marking is not carried out in one piece, a predetermined breaking point may also be a connection, for example a seam.

Preferably, at least one of the legs is designed as an elastic spring element, which acts upon application of a perpendicular to the ring plane

Pressing force elastically deformed, after the elimination of the contact force, however, at least partially returns to its original shape. The spring force can thereby also by the choice of an elastic plastic material as raw material for the

Originality marking can be effected. When placing the cap, the legs due to their elastic deformation exert a force on the segments, with which the contraction of the identification ring is effected; after removing the protective cap, the legs automatically return to their original shape and the force exerted on the ring segments force effect is eliminated. The previously broken in the intended placement of the cap on at least one predetermined breaking point identification ring is then only loosely on the neck ring of the gas cylinder on or falls from this.

Preferably, one of the two legs is designed in a shape that promotes elasticity, for example in the form of an "S", whereby a restoring force is generated when the marking ring is compressed, which ensures that the ring elements are removed when the protective cap is removed, that is, after removal of the ring Contact pressure, secure from each other. A again advantageous embodiment of the invention provides that the

Tamper-evident means fixing means for releasably connecting the ends of the segments to each other and / or with the profile element comprises. such

Fixing agents ensure that after placing or screwing the

Protective cap and the subsequent breakage of at least one predetermined breaking point the originality marking is firmly fixed between the neck ring and protective cap and a detachment can take place only after removing the protective cap. The

Fixing means have elements which are arranged in the segments and / or the profile element, and with corresponding elements on the respective other segment or on the profile element to produce a positive, but releasable after elimination of the contact force of the protective cap connection

interact.

Preferably, the fixing means are formed so that they produce a firm connection between the segments under the action of a substantially perpendicular to the ring plane applied contact force (as is usually present after putting on or screwing the cap on the neck ring), when discontinuing the However, contact force under the action of a restoring force automatically solve each other. The fixing means comprise, for example, mutually corresponding toothing profiles, which cooperate only under the action of the contact pressure. The restoring force is preferably effected via elastic profile sections, which deforms upon application of the contact force and at least partially return to their original shape when the contact pressure is lost and thus the

positive connection of the fixing means, e.g. release the splines again. For example, the restoring force is effected in the manner previously described due to an elastic design of one or both legs of the profile elements.

Preferably, the form-fitting connection producing

In this case, tooth profiles have, on the one hand, a profile which is integrally formed on the contact surface or on at least one ring segment and which has one or more corresponding recesses in a ring segment or in the

Contact surface cooperates such that the ring segments of the Identification ring fixed, but are releasably connected to each other after removing the cap. When placing or screwing the cap of the identification ring between the end face of the cap and the neck ring is compressed, ie contact surface and ring segments are moved towards each other. This leads to an interaction of profile and recess. At the same time, however, the arranged between the ring segment and contact surface legs are elastically deformed and thus exert on the contact surface and the ring segments a restoring force that comes to fruition as soon as the cap is removed, and which causes the profile and recess automatically solve each other , A simple to manufacture, yet reliable way to interlock ring segment and contact surface with each other, is a tongue-and-groove profile: Here is a spring-like profile transverse to the direction of rotation of the identification ring on the contact surface or the

Ring segment and a corresponding groove in the ring segment or the contact surface provided. Spring profile and groove preferably do not extend exactly radially, but are inclined in the ring plane, for example, about 30 ° to 60 ° relative to the radius of the identification ring, whereby a particularly high stability of the connection in the direction of rotation of the identification ring is ensured.

Preferably, the identification ring is equipped with at least one identification tag projecting from the identification ring, which can be provided with a label. The inscription contains, for example, information about the origin, the filling date and / or the determination of the compressed gas cylinder. It can also be provided several flag flags, each having the same or different labels.

A preferred embodiment of the invention provides that the

Labeling ring is equipped with an annular holding thread which is connected to all segments and whose circumference is greater than the circumference of the neck ring of the compressed gas cylinder, however, smaller than the circumference of the compressed gas cylinder itself. In this embodiment fall at the predetermined breaking point separated ring segments after removing the cap (ie in the "used" state of Tamper-evident) are not completely removed from the bottle, but are from the tether on the cylinder, but below the neck ring,

for example, lying on the shoulder of the compressed gas cylinder held. In this way, the used originality markings can be easily removed from the

Gas cylinder to be detached and disposed of.

In a again expedient embodiment of the invention

Originality marking includes the predetermined breaking point arranged in at least one leg of the profile element material portion with reduced cross-sectional area and thus lower mechanical stability; the leg of the profile element is therefore thinner at this point than in the other areas. When placing the protective cap and the associated application of force to the legs of the profile element this tears thus preferably to this

Material sections with reduced cross-sectional area from. The material portion may be arranged at any location in the leg and / or in the contact surface, but preferably it is located at the transition of the leg to the ring segment and / or the contact surface.

Reference to the drawings, embodiments of the invention will be explained in more detail below. In schematic views show:

1 a: an originality marking according to the invention in a section in the ring plane,

Fig 1 b equipped with a tamper-evident

Compressed gas cylinder with only partially attached protective cap,

2a shows a profiled element of a tamper-evident marking according to the invention in a first embodiment in a side view,

2b shows the profile element from FIG. 2a in a plan view,

3a shows a profile element in a second embodiment in one

Side View,

3b shows the profile element of Fig. 3b in a plan view,

4a shows a profile element in a third embodiment in a

Side View, 4b: the profile element of Fig. 4a in a plan view,

5a shows a profile element in a fourth embodiment in a

Side View,

5b: the profile element from FIG. 5b in a plan view, FIG.

6 shows a profile element in a fifth embodiment in one

Side view.

The illustrated in Fig. 1 a, preferably integrally designed as an injection molded part of a flexible plastic tamper-evident 1 comprises a

Identification ring 2, which consists of several, in the embodiment of four

Ring segments 4a, 4b, 4c, 4d is constructed. The ring segments 4a, 4b, 4c, 4d are arranged at their opposite end sides in the circumferential direction spaced from each other, so that in the ring plane 6 of the ring 2 between two ring segments 4a, 4b; 4b, 4c; 4c, 4d; 4d, 4a opens a gap 5a, 5b, 5c, 5d of about 1 to 3 mm in practice. The gaps 5a, 5b, 5c, 5d between the ring segments 4a, 4b, 4c, 4d are described in more detail below

Profile elements 8, 8 ', 8 ", 8"' bridged in the axial direction, i. protrude perpendicular to the ring plane of the ring segments 4a, 4b, 4c, 4d. Furthermore, the originality marking 1 comprises at least one identification tag 9 which can be labeled with information, for example about the origin of the bottle and / or its contents.

In Fig. 1 b is the originality marking 1 in the installed state at a

Compressed gas cylinder 10 shown. The compressed gas cylinder 10 has a neck ring 1 1, which is equipped with an external thread 12 for screwing on a protective cap 13 (in the picture only partially screwed). For this purpose, the protective cap 13 has a corresponding internal thread. In its installed state is the

Originality marking 1 between an end face 14 of the protective cap 13 and an annular flange edge 15 of the neck ring 1 1 arranged and is by attaching or screwing the cap 13 in the axial direction, i.

perpendicular to the ring plane 6, compressed. With the compression of the identification ring 2 are also the projecting in the axial direction

Profile elements 8, 8 ', 8 ", 8"' compressed. FIGS. 2 to 5 show various embodiments of profile elements 8, 8 ', 8 ", 8"' which can serve to bridge the gaps 5a, 5b, 5c, 5d. In the following, by way of example, profile elements 8, 8 ', 8 ", 8"' for bridging the gap 5d will be described in greater detail; however, this is not intended to express any restriction.

The profile element 8 shaped in the manner of a dovetail shown in FIGS. 2 a, 2 b comprises a contact surface 17, which in the axial direction, i.

projects perpendicular to the ring plane 6 of the identification ring 2 of the ring segments 4a, 4d, and two of these each with one of the ring segments 4a, 4d

connecting legs 18, 19. The legs 18,19 are at an acute angle to the

Ring segments 4a, 4d or the contact surface 17 formed, in such a way that they extend toward each other in the direction of the ring segments 4a, 4b. The

Contact surface 17 is further equipped with a predetermined breaking point, in

Embodiment of FIG. 2b with a notch 20th

If the profile element 8 is compressed in the axial direction, for example when the protective cap 13 is screwed on, the contact surface 17 and ring segments 4a, 4d move towards one another. Due to the arrangement of the legs 18, 19 shown, the axial force is deflected into tangential forces acting on the

Pressing surface 17 and act on the ring segments 4a, 4d. The on the

Pressing surface 17 acting forces stretch them and finally - at a sufficiently large contact pressure - to break the contact surface 17 at the

Notch 20. On the other hand, a force is exerted on the ring segments 4a, 4d via the legs 18, 19 running toward one another in the direction of the ring plane, through which ends of the ring segments 4a, 4d are moved toward one another at the gap 5c. These acting on the ring segments 4a, 4d prevent forces, together with the frictional forces of the contact surface 17 or on the profile element 8 opposite side of the ring segments 4a, 4d adjacent end faces of protective cap 12 and neck ring 1 1, that is now on one or more of the predetermined breaking points broken marking ring 2 from the neck ring 1 1 replaces. If the protective cap 13 unscrewed, which accounts for axially the marking ring 2 acting forces and thus also acting on the ring segments 4a, 4d tangential forces and broken at one or more of the predetermined breaking points identification ring 2 falls from the compressed gas cylinder 10 from.

The embodiments described below show alternative

Profile elements 8 ', 8 ", 8"', which may be provided instead of the profile element 8 for connecting the ring segments 4a, 4d. These profile elements 8 ', 8 ", 8"' have additional means to the ring segments 4a, 4d during the

Pressing the identification ring 2 firmly, but releasably connect to each other.

The profiled element 8 'shown in FIGS. 3a, 3b, like the profiled element 8, has a contact surface 17' and legs 18 ', 19' connecting the latter with two annular segments. As a predetermined breaking point serve in this embodiment, mechanically sensitive kinks 21 at the transition between contact surface 17 'and

Ring segment on the one hand and legs 18 ', 19' on the other. At the contact surface 17 ', a connecting member in the form of a in the direction of the ring segment 4 d projecting rectangular tooth profile 22 is formed, the at

Pressing the identification ring 2 with a corresponding

Recess 23 cooperates in the ring segment 4d. The rectangular profile 22 may, as shown in the drawing, radially on the outside of the contact surface is arranged, a radially inner side or central arrangement, however, is also conceivable within the scope of the invention. Likewise conceivable is a connection profile in

To provide ring segment and a corresponding recess in the contact surface. By the engagement of the tooth profile 22 in the recess 23, a positive connection is made after the compression of the identification ring 2 by an axial force, for example by placing or screwing the cap 13, the labeling ring 2 in the circumferential direction even after breaking a kink 21st holds together and prevents falling of the identification ring 2 from the neck ring 1 1, as long as the axial force continues. In this case, the legs 17 ', 18' are bent, their tendency to return to their original shape, the axial force effect counteracts. When the protective cap 13 is removed, ie when the axial force effect ceases, the legs 18 ', 19' at least largely engage in theirs

original form and thus exert a restoring force on the

Gear profile 22 off. As a result, the tooth profile 22 is released from the recess 23, the identification ring 2 disintegrates and detaches from the neck ring 1 1 of the compressed gas cylinder 10.

Another variant of a profile element, Figs. 4a, 4b: In this

Embodiment are integrally formed at both ends of the contact surface 17 "of a profile element 8" connecting members. This is in the direction of the ring segments 4a, 4d respectively formed transversely to the circumferential direction of the identification ring 2 spring profiles 25a, 25b. The spring profiles 25a, 25b cooperate with

corresponding grooves 26a, 26b in the ring segments 4a and 4d together. The spring elements 25a, 25b and grooves 26a, 26b are not exactly radial, but are offset from the radius of the identification ring 2 by an angle α with 30 ° <α -S 60 °, whereby a particularly good stability of the compound in the circumferential direction of the Identification ring 2 is guaranteed. At the

Compression of the identification ring 2 and the associated axial force effect thus produces a firm connection between the ring segments 4a, 4d and the contact surface 17 "via two tongue and groove-like connections to the elements 25a, 26a and 25b, 26b is released after the elimination of the axial force due to the provision of the elastic legs 18 ", 19" back to its original shape.The predetermined breaking point 20 "of the profile element 8" is designed as the predetermined breaking point 20 in the profile element 8.

Furthermore, the embodiment according to in Fig. 4a comprises a holding thread 27 which is fixedly connected to the ring segments 4a, 4b, 4c, 4d. The circumference of the annular holding thread 27 is larger than the outer circumference of the neck ring 1 1, but less than the outer circumference of the compressed gas cylinder 10 at its widest point. The tether 27 ensures that after the intended destruction of the identification ring 2, the ring segments 4a, 4b, 4c, 4d even after the removal of the cap 13 in a loose composite with the tether 27 at the gas cylinder 10 get stuck and can then be easily removed by operating personnel.

In the embodiment according to FIGS. 5 a, 5 b, the leg 18 "'of the profile element 8" is bent in an S-shaped manner, while a toothed profile 28 is formed on the contact surface 17 "' of the profile element 8" 'in the region of the leg 19 "' is that, similar to the profile element 8 ', cooperates with a corresponding recess 29 in the ring segment 4d The bent shape of the leg 18' 'leads to a higher elasticity of this leg 18' 'and thus to an increased restoring force, the profile element '' after elimination of the axial

compressive force returns to its original shape. As a predetermined breaking point, only the kinks 21 on the leg 19 "'are provided in this case.

The profile element 8 "" shown in FIG. 6 differs from the profile element 8 'shown in FIG. 3 a only by the type of predetermined breaking point 21. In this embodiment, the leg 19 is "" with a reduced portion

Cross-section and thus lesser mechanical stability equipped, which also represents the predetermined breaking point 21. Such a reduced section

mechanical stability may also be arranged instead or additionally in section 18 ""; it may also be provided in the preceding embodiments instead of or in addition to the predetermined breaking points 21 shown there.

In the tamper-evident marking 1 according to the invention, the in

Direction of the ring plane of the identification ring 2 toward each other

extending legs 18, 19, 18 ', 19', 18 ", 19", 18 "', 19"' for that on the one hand the ring segments with attached or screwed cap even after breaking at least one predetermined breaking point 20, 21 securely on the neck ring 1 1 the

Gas cylinder are fixed. The same legs 18, 19, 18 ', 19', 18 ", 19", 18 "', 19"' due to their elastic return to their original shape after elimination of the force exerted by the cap force that the broken identification ring. 2 disintegrates and / or expands and dissolves from the neck ring 1 1. Therefore, elastic plastics are particularly suitable as a starting material for the originality marking according to the invention.

The inventive mark of authenticity allows a cost-effective as tamper-proof tamper-evident for all common

Compressed gas cylinders.

LIST OF REFERENCES:

1 originality marking

2 ring

3

4a, 4b, 4c, 4d ring segment

5a, 5b, 5c, 5d gap

6 ring plane

7

8, 8 ', 8 ", 8"', 8 "" profile element

9 flag

10 compressed gas cylinder

1 1 neck ring

12 external thread

13 protective cap

14 face

15 flanged edge

16

17, 17 ', 17 ", 17"', 17 "" contact surface

18, 18 ', 18 ", 18"', 18 "" thighs

19, 19 ', 19 ", 19"', 19 "" thighs

20 notch

21 kink

22 tooth profile

23 recess

24

25a, 25b spring profile

26a, 26b groove

27 holding thread

28 tooth profile

29 recess

Claims

claims

1 . Originality marking for a compressed gas cylinder, on the neck ring a protective cap is releasably secure, with a designated

Installation state between an end face (14) of the protective cap (13) and a shoulder (15) of the neck ring (1 1) of the compressed gas cylinder (10) arranged formed from at least two in a plane annularly arranged segments (4a, 4b, 4c, 4d) Identification ring (2) equipped with at least one predetermined breaking point,

characterized,

in that mutually facing ends of adjacent segments (4a, 4b, 4c, 4d) of the identification ring (2) are arranged at a distance from one another, forming a gap (5a, 5b, 5c, 5d), which gap (5a, 5b, 5c, 5d) with a profile element (8, 8 ', 8 ", 8"') connecting the two ends to one another with predetermined breaking point (20, 21) arranged therein, the profile element (8, 8 ', 8 ", 8"') being bridged from the ring plane (6) protruding contact surface (17) and two each of the contact surface (17) with one end of the two segments (4a, 4b, 4c, 4d)

connecting and from the contact surface (17) in the direction of the ring plane (6) at least partially to each other running leg (18, 19, 18 ', 19', 18 ", 19", 18 "', 19"').

2. Originality marking according to claim 1, characterized

in that the identification ring (2) is produced in one piece, preferably by injection molding.

3. authenticity marking according to claim 1 or 2, characterized in that the predetermined breaking point (20, 21) in the contact surface (17) or a leg (18, 19) of the profile element (8, 8 ', 8 ", 8"') arranged weak zone includes.

4. Originality marking according to one of the preceding claims, characterized in that at least one of the legs (18, 19, 18 ', 19', 18 ", 19", 18 "', 19"') is designed as an elastic spring element, the at Creation of a perpendicular to the ring plane (6) acting contact pressure is elastically deformed, but after the elimination of the contact force at least partially returns to its original shape.

5. tamper-evident marking according to claim 4, characterized in that one of the two legs (18 "') in a form favoring the elasticity,

for example, in the form of an "S" is executed.

6. originality marking according to one of the preceding claims, characterized by fixing means (22, 23, 25a, 25b, 26a, 26b) for releasable

Connecting the segments (4a, 4b, 4c, 4d) with each other and / or with the

Profile element (8,8 ', 8 ", 8"').

7. tamper-evident marking according to claim 5, characterized in that the fixing means (22, 23, 25a, 25b, 26a, 26b) are formed such that they under the action of a substantially perpendicular to the ring plane (6) applied

Contact force to establish a firm connection between the segments (4a, 4b, 4c, 4d), but with the elimination of the contact force under the action of a

Release restoring force from each other.

8. originality marking according to claim 5 or 6, characterized in that the fixing means (22, 23, 25a, 25b, 26a, 26b) with the contact surface (17) of the profile element (8, 8 ', 8 ", 8"') or a toothed profile (22, 25a, 25b) connected to a segment (4a, 4b, 4c, 4d) and a recess (23, 26a, 26b) corresponding to this tooth profile (22, 25a, 25b) in a segment (4a, 4b, 4c, 4d) or in the contact surface (17).

9. Originality marking according to one of the preceding claims, characterized in that the marking ring (2) with at least one of

Identification ring (2) above flag (9) is equipped.

10. The originality marking according to one of the preceding claims, characterized in that the segments (4a, 4b, 4c, 4d) on an annular

Holding thread (27) are arranged, whose circumference is greater than the circumference of the neck ring (1 1) of the compressed gas cylinder (10).

1 1. Tamper-evident label according to one of the preceding claims, characterized in that the predetermined breaking point (20, 21) has one in at least one

Leg (18 "", 19 "") of the profile element (8 "") arranged portion of reduced-section material comprises.