UA79550C2 - Tamper evident closure for a bottle, particularly a bottle suitable for containing valuable drinks - Google Patents

Abstract

The invention relates to a tamper evident closure for a bottle, particularly a bottle suitable for containing valuable drinks, having a neck (5, 34, 54) which extends axially along the longitudinal axis (X-X) from the body of the bottle (2, 31, 51), the neck (5, 34, 54) has an opening (7, 33, 56) at its free end and the closure comprises means of a threaded connection to a pouring device (6, 38, 55), the pouring device (6, 38, 55) is connected to a sleeve (17, 47, 65) arranged axially along the outer surface of said neck (5, 34, 54) having the characteristic of comprising annular means (18, 45, 70) arranged between the base of said neck (5, 34, 54) and the lower end of the sleeve (17A, 47B, 65B) and being connected by means of breakable connecting means (46, 64, 82) to said sleeve (17, 47, 65), the annular means (18, 45, 70) and said lower end (17A, 47B, 65B) of said sleeve (17, 47, 65) having respective surfaces (11A, 18E, 47C, 45I, 65C, 70D) facing towards each other and at least one of said facing surfaces (11A, 18E, 47C, 45I, 65C, 70D) of said annular means (18, 45, 70) and of said lower end (17A, 47B, 65B) being inclined relative to the longitudinal axis (X-X) of the neck (5, 34, 54), so that as a result of an axial movement of said annular means (18, 45, 70) towards said opening in said neck (5, 34, 54), breakage of said breakable means (46, 64, 82) occurs and consequent radial movement of at least one circumferential zone of said annular means (18, 45, 70).

Description

Description of the invention

The invention is related to bottle caps from the obvious intervention for the bottle, especially the bottle which is used for the content of valuable beverages, according to the restrictive part of clause 1 of the claims.

There are known bottle caps for bottles that show signs of attempts to forcibly remove them for fraudulent reasons.

Such bottle cap devices are designed to prevent the original beverage contained in the bottle from being replaced by another counterfeit beverage. 70 In order to produce a counterfeit, the steps taken by counterfeiters are, for example, to recover an empty bottle that has already been used, fitted with a matching bottle cap with a broken seal but with intact internal valve components, refilling it with an equivalent but low-value beverage, and re- by closing the bottle, restoring the seal.

In other cases, it has been found that in order to deceive the customer, attempts are sometimes made to remove the bottle cap 712 from the bottle without unscrewing the bottle cap itself so that the valuable product contained in the bottle can be replaced with another product of lesser value.

In view of the above-mentioned issues, the object of the invention is to propose a bottle stopper for bottles which has more effective means of obvious tampering compared to the proposed known bottle stoppers, and which makes the tampering process as obvious as possible and irreversible.

According to the invention, this goal is achieved by means of a bottle cap against obvious interference for bottles, especially for bottles containing valuable beverages according to the distinctive part of clause 1 of the claims.

With the help of the invention it is possible to create a bottle cap capable of providing an immediate visible indication of any attempt to penetrate the inside of the bottle where an attempt is made to move or open the device of the bottle cap. with

The differences and advantages of the invention will become clearer from the following detailed description of several forms (3 practical embodiments, illustrated solely by way of example, which is not exhaustive in the attached drawings, in which:

Fig. 1A shows a front view of a first embodiment in partial section of a bottle cap for bottles according to the invention;

Fig. 18 shows an enlarged view of the first part of the bottle cap from figure TA; at

Fig. 1C shows a magnified view of another part of the bottle cap from Fig. 1A; oh

Fig. 10 shows a view of the details of the bottle cap from figure 1A in perspective;

Fig. 2A shows a front view of a second embodiment in partial section of a bottle cap for bottles according to the invention; Ge")

Fig. 28 shows an enlarged view of part of the bottle cap from figure 2A; Fig. 3A shows a front view of a third embodiment in partial section of a bottle cap for bottles according to the invention;

Fig. 3B shows an enlarged view of part of the bottle rim from figure ZA;

Fig. AA shows a front view of a fourth embodiment in partial section of a bottle cap for bottles according to the invention; Fig. 48 shows an enlarged view of the bottle cap of Fig. 4A. With reference to Fig. 1A-100, the bottle cap according to the invention is indicated by the number 1, while the bottle of which only the upper part is shown is indicated by the number 2.

The bottle 2, as such, contains a neck C, generally cylindrical in shape, and has an opening 4 and a body 5 connected externally to the neck 3.

The bottle cap 1 contains a spill device 6 of a known type and therefore will not be described in detail further, and apart from its main parts. (se) In particular, the pouring device 6 includes mechanisms 7, such as ball valve mechanisms, which are placed inside the neck C of the bottle 2 to prevent the falsified secondary filling of the bottle 2. The aforementioned valve mechanisms 7 are equipped with a corresponding actual housing of the pouring funnel 8. Housing 4 ! 20 of the pouring funnel 8 is connected by a screw thread to the stopper 10, which covers it from the outside and performs the functions of the stopper 10 in this position U, crossing the axis of the section X-X of the bottle cap. All parts of the pouring device 8 are inseparable from each other and preferably this pouring device 8 is locked in the housing C of the bottle 2 axially and along the axis of rotation, which in a certain way is well known to a skilled specialist in this field.

The tubular outer cap 11 is installed on the stopper 10. 29 The cap 11 is made, for example, of plastic material and covers the stopper 10, as well as its

GF) transverse part 9 in the upper wall 12.

In the upper wall 12 of the cap 11, the stopper 10 and the cap 11 are fixed on the axis of rotation with the help of two corresponding notched parts 13 and 14, connected to each other.

In addition, also in the upper wall 12 of the cap 11, the stopper 10 and the cap 11 are fixed axially with the help of 60 means of the inner annular protrusion 15 of the cap 11, which is closely connected to the lower part of the stopper 10.

Between the upper wall 12 and the lower part 16 of the cap 11, a fragile intermediate ring zone 21 is fitted.

This annular zone 21 covers a segment in the form of a loop 21 A, which is placed in a cut-out area 22 on the body of the cap 11.

The ring zone 21 is connected to the lower part 16 of the cap 11 exclusively with the help of the connection parts 23. Because the means of prevention are also made on the metal rim 24 in order to firmly cover the fragile ring zone 21 with the cap 11. To fasten the metal rim 24 tightly to the cap 11, prepare annular protrusion 25 and a ring is placed on the lid and a metal rim 24 is formed on it in its upper part.

A tubular sleeve 17 is connected to the pouring device 8, which surrounds the neck of the bottle 2 from the outside.

Below, a metal rim 24 is wrapped inside around the lower end of the cap 11 and sleeve 17. This metal rim 24 can be applied to the cap 11 by scrolling.

The sleeve 17 has a protrusion 17B, which is rigidly connected to the overflow device 8 and the free end 17A is pressed against the ring 18; in addition, the bushing 17 has a projection 17C, which is located in a groove BEHIND the neck 3, to ensure a strong engagement of the bushing 17 axially and a pair of notched areas 170 and 17E, engaged one 7/0 In one, to lock the bushing 17 during rotation.

The ring 18 is made integral with the cap 11 during rotation due to the annular notched zones 19 and 20, interlocked with each other.

Therefore, in this embodiment, the ring 18 is located below between the base! the neck of the bottle 2 and the free end 17A of the sleeve 17.

In other words, the ring 18 is placed axially or parallel to the X-X axis, between the base of the neck of the bottle 2 and the free end of the sleeve 17, and in the longitudinal direction, or transversely to the X-X axis, between the outer part of the cap 11 and the neck of the bottle 2.

In addition, the axially placed ring 18 has a part 18M of the surface extended to the top of the free end part 17A of the sleeve 17.

Since the metal rim 24 and the bushing 17 are connected to each other as a footing, the ring 18 is rigidly anchored to the bushing 17 and therefore to the bottle 2.

Therefore, the ring 18 is held by the cap 11, which protects the ring 18 from the side of the loose part 17A of the sleeve 17.

Briefly, the cap 11 and the metal rim 24 act as connecting means between the ring 18 and the sleeve 17.

As an exception, we now refer to Fig. 10, where we should note that the collar 18 is made in the form of a rim, in particular a truncated cone-shaped rim.

In fact, this truncated cone-shaped rim 18 has an inner surface 18A and an outer surface 188, and i) the inner surface 18A has a first cylindrical zone 18C and a second cylindrical zone 180), the latter concentric with the first and third cylindrical zones 181; the second cylindrical zone 180 has a smaller radius compared to the first cylindrical zone 18C, while the third cylindrical zone 18I has a radius of intermediate magnitude compared to the first cylindrical zone 18C and the second cylindrical zone 180.

The first cylindrical zone 18C and the second cylindrical zone 180) are connected to each other by means of the first inclined plane 18E to create a bow for purposes and requirements that will be described in more detail below. Likewise, the second is cylindrical! zone 18EE is connected to the third cylindrical zone 18I by means of the second inclined plane 181. Me

The first inclined plane!8E and the second inclined plane 18! inclined relative to the Х-Х axis of the neck of Z bottle 2 at M a certain angle.

For example, this angle can take values between 305 and 602,

In fact, as can be seen in Fig. 1B and 1C, planes 18E, 180 and 18! rings 18 take a trapezoidal view in cross section. "

Means of prevention are also made for the free lower part 17A of the collar 17 to have an inclined plane, 8 s while the ring 18 has, instead of a plane, a significant elongation relative to the X-X axis of the bottle neck. Alternatively, the free lower end of the sleeve 17A and the ring 18 have inclined planes. and? Referring again to Fig. 10, we note that the inclined plane 18E contains the pointing means 18E, which in this form of the variant embodiment is made in the form of a tooth having a flat upper surface 180.

This tooth 18E is placed with the free part 17A of the sleeve 17, or the tooth 18E is placed connected and close to the free part 17 of the sleeve 17.

The outer surface 188 contains the indicated means 18H, which in this form of the variant embodiment is made in the form of a protruding part; this protruding part is used during fitting of the ring 18 to ensure correct centering of the ring with respect to other parts of the bottle cap 1.

When, for the purpose of counterfeiting, an attempt is made to remove the bottle cap 1 with tools that can be inserted between the body of the bottle neck and the lower part 16, such a tool as a screwdriver, or a force is applied from the bottom to the top, or a force is applied in the direction of the opening 4 necks From bottle 2.

In this way, the tools transmit mainly the axial movement to the bottle cap 1.

Therefore, under the action of such tools, the ring 18 moves forward to the free part 17A of the sleeve 17, due to the combined action of the tooth 18E (Fig.10)) and the inclined plane 18E.

In fact, the tooth 18E adjoins the free part 17A of the bushing 17 and therefore functions as a fulcrum for the iF) ring 18, since the inclined plane 18E acts as a slope that helps to unscrew the ring 18 relative to the bushing 17. Thus, the ring 18 partially moves forward to sleeve 17.

In this form of the embodiment containing the cap 11, the latter will be broken or visibly damaged because the Ring 18, which, being on the top of the sleeve 17, acts as a wedge during the opening of the cap 11 until it breaks.

In this form of the embodiment, the metal rim 24 will also be damaged by the action of the wedge applied in the direction of the ring 18.

In other words, the connection that is created between the ring 18 containing the tooth 18E with a flat surface 185 and the sleeve 17 causes the ring to separate from the center once it is subjected to an axial force acting from the bottom 65 to the top.

In addition, the placed inclined plane 18E helps the ring 18 to move forward on the free part 17A of the sleeve 17 to cause damage to the cap 11 and the metal rim 24.

In fact, it should be noted that there are advantages to the fact that the sleeve 17 is made of plastic materials that have a suitable deformation under the loads applied to them, since a ring 18 made of plastic materials requires less mechanical force to be applied than to plastic materials. bushings 17.

Thus, with the invention, the consumer/buyer will have an immediate visual indication of any attempt to tamper with the bottle cap device.

In addition, there is also the advantage that the bottle cap 1 is even more difficult to restore than known bottle caps, since the cap 11 splits and its recovery is impossible or at least more difficult and expensive, 7/0 compared to the recovery of the ring of obvious interference of the bottle cap known in this field.

Referring to Fig. 2A, the bottle cap according to the invention is indicated by the number 30, while the bottle, only the upper part of which is shown, is indicated by the number 31.

The bottle 31, as such, contains a neck 32 that is generally cylindrical in shape and has an opening 33 and a body 34 connected externally to the neck 32.

The bottle cap 30 contains a spill device 35 of a known type and which therefore will not be described in detail further, except for its main parts, which are necessary for an understanding of the invention.

In particular, the spill device 35 includes mechanisms 36, such as ball valve mechanisms, which are placed inside the neck C of the bottle 2 to prevent tampered secondary filling of the bottle 2.

In fact, the body of the pouring funnel 37 is suitable for the above-mentioned valve means.

All components of the pouring device 35 are inseparable from each other and preferably this pouring device 35 is coupled to the neck 32 of the bottle 31 both along the axis and during rotation, which in a certain way is well known to a skilled specialist in this field.

The thread on the body of the pouring funnel 37, with the help of screw connections 38, is the stopper 40 of the end of the wall of the bottle cap, indicated under number 39.

The lower part 44 of the bottle cap 30 has an annular rim 45.

This annular rim 45 in the upper part 45A is connected to the body of the pouring funnel 37 exclusively through i) the annular protruding part 46.

A sleeve 47 of tubular shape is attached to the body of the pouring funnel 37, which externally surrounds the neck 32 of the bottle 31. The sleeve 47 has a part 47A rigidly connected to the pouring funnel 37 and the free end 478 abuts towards the base of the neck 32 of the bottle 31. In this in the form of the variant embodiment, this free end has a flat surface 47C, elongated in the coaxial axis X-X. yu

The sleeve 47 is fixed against rotation on the neck 32 by means of the annular notched zones 48A and 488, inserted into each other, and is locked axially relative to the axis 32 of the bottle 31 by means of the groove 48C of the existing Me)

Zv There are 32 Z1 bottles in the neck. M

Referring again to Figure 28, it is noted that the annular circumference 45 has at its end portion 458 an inner surface 45C and an outer surface 450. The inner surface 45C has a first cylindrical zone 45E and a second cylindrical zone 45E, the latter concentric with the first, and also a third cylindrical zone zone 450. The second cylindrical zone 45E has a smaller radius compared to the first cylindrical zone 45E, and the third cylindrical "

Zone 4555 has a radius of an intermediate value between the values of the radius of the first cylindrical zone 45E and the second cylindrical zone 45РЕ.

The first cylindrical zone 45E and the second cylindrical zone 45E are connected to each other with the help of the first;" inclined plane 45H so as to create a bow, the specified second cylindrical zone 45E is connected to the third cylindrical zone 450 by means of the second inclined plane 451.

The first inclined plane 45H and the second inclined plane 451 are placed at a certain angle relative to the X-X-I axis of the neck 32.

For example, this angle can take a value between 30: and bOe2, o Prevention means are also made for the free lower part 47B of the sleeve 47 to have an inclined plane, sl while the annular rim 45 has, instead of a plane, a significant elongation relative to the X-X axis of the neck 32 of the bottle 31.

Alternatively, the free lower end of the sleeve 47B and the annular rim 45 have an inclined plane. o Bushing 47 is thus placed axially relative to the axis, or parallel to the X-X axis, between the base o of the neck of the bottle 31 and the inclined plane 45H of the end part 458 of the annular circumference 45, along the radial direction, or transverse to the X-X axis, placed between the annular bottle 31 with a circumference of 45 and a neck of 32.

When tampering attempts are made to remove the bottle cap 30 with tools that may be inserted between the base of the bottle neck and the bottom portion 44, such as a screwdriver, force is applied from the bottom to the top, or a force is applied toward the opening 33 of the bottle neck 32 31. iF) In this way, the tools transmit essentially an axial movement to the bottle cap Z0 and therefore, under the action of such tools, the annular circumference 45 moves forward to the free part 47B of the sleeve 47, with the help of an inclined plane 45H, which causes a radial movement of the zone. In this form of the embodiment, the annular connection 46 of the annular circuit 45 will be broken, and the annular area itself will directly be broken or have visible damage.

Thus, with the invention, the consumer/buyer will have an immediate visual indication of any attempt to tamper with the bottle cap device.

In addition, there is also the advantage that the bottle cap 30 is even more difficult to restore than the known bottle caps 65, since the annular rim 45 splits and its restoration is impossible or at least more difficult and expensive, compared to the restoration of the ring of obvious intervention of the bottle cap known in this industry.

Now, considering the features of the form of the embodiment shown in figures ZA-ZB, we note that the bottle cap according to the invention is indicated by the number 50, placed on the bottle, only the upper part 51 of which is shown, which has a neck 52, preferably cylindrical in shape. The bottle has an opening 53 and a base 54 of the neck 512.

The bottle cap 50 contains a spill device 55 of a known type and which will therefore not be described in detail further, apart from its main parts.

In particular, the pouring device 55 includes valve parts 36, for example of the ball type, which are placed inside the neck 52 to prevent the adulterated secondary filling of the bottle 51. 70 In fact, the housing of the pouring funnel 57 is suitable for the above-mentioned valve means 56. With the pouring funnel 57, carved in a manner such as thus, the combined stopper 58.

All components of the pouring device 55 are inseparable from each other and preferably this pouring device 57 is coupled to the neck 52 of the bottle 51 both axially relative to the axis and during rotation, which in a certain way is well known to a skilled specialist in this field.

The cap 59, made, for example, of plastic materials, completely covers the stopper 58.

On the transverse wall 60, the cap 59 and the stopper 58 are fixed against rotation due to the annular notched zones 61, inserted into each other as such.

In addition, still in the upper wall of the cap 59, the stopper 58 and the cap 59 are fixed relative to the axis with the help of internal annular protrusions 62, as such.

The bottle cap 50 also has a lower part 63, which is covered by a tubular circumference 64, with the possibility of tightly covering the sleeve 65 below it, the sleeve has a tubular shape, connected in a known way to the body of the pouring funnel 57.

The sleeve 65 is externally limited by the neck 52 of the bottle 51 and is secured against rotation relative to the neck 52 by means of annular notched zones 6b and 67 (Fig. 3B), inserted one into the other. The sleeve 65 is fixed axially perpendicular to the axis with the help of an annular projection 68, which is placed in the groove 69 of the neck 52.

The bushing 65 also has an upper part 65A rigidly connected to the tubular circumference 64 and to the body of the pouring i) funnel 57. The free end 658 is located in the direction of the anti-opening means 70. In this form of the variant embodiment, this free end has a flat surface 65C , placed for the most part in a position transverse to the X-X axis. о о о Tubular circuit 64 is thus anchored to the sleeve 65 with the help of the first ring 64A, draped over the upper end of the circuit 64. о

This circuit 64A is obtained, for example, by means of a rotary action. yu

A tubular contour 64, preferably made of a metal sheet, is wrapped from below along the lower edge of the anti-opening means 70 with the help of a second fold 648. Me

Also in this form of the embodiment, the anti-opening means 70 between the base of the neck 52 of the bottle 51 and M end part 658 of the sleeve 65.

This anti-opening means 70 is made in the shape of a hoop and has an inner surface 70A and an outer surface 70OB, where the inner surface 70A has a cylindrical area 70C connected to the upper end of the anti-opening means 70 by an inclined plane 700 to create an inclined plane for goals and requirements, which will be described in more detail below. z c The inclined plane 700 is placed at a certain angle relative to the X-X axis of the neck 52 of the bottle 51.

For example, this angle can take values between 305 and 602, ;" When tampering attempts are made to remove the bottle cap 50 with tools that can be inserted between the base of the bottle neck, under the fold 648 of the contour 64, a tool such as a screwdriver applies a bottom-up force or a substantial axial load to the bottle cap 50. - and Therefore, under the action of such tools, the anti-opening means 70 are advanced to the end part 658 of the sleeve 65, due to the presence of the inclined plane 700. o In this form of the variant embodiment, the existing tubular circumference 64 will be broken or visibly damaged hoop sl 70 which, while a bushing 65 is placed above it, it acts as a wedge that opens the bushing 65 and the tubular circumference 64 to 5p of further breakage. Thus, with the invention, the consumer/buyer will have a direct visual indication of any attempt to tamper with the bottle cap device.

Referring now to the form of the variant embodiment shown in Figures 4A-4B8, in which the elements already described have been assigned identical numbers, it is noted that the bottle cap according to the invention is indicated by Number 80, while the bottle, only the upper part of which is shown, is indicated by the number 51.

The bottle cap 80 is such that its lower part 63 covers the sleeve 65 of a tubular shape connected to the body of the pouring funnel 57. The sleeve 65 also covers the neck 52 of the bottle 51 from the outside.

The bushing 65 is also fixed against rotation on the neck 52 of the bottle 51 by means of annular notched zones 56 and 67 inserted into one another, while it is fixed axially relative to the axis by means of an annular protrusion 68 which is placed in the groove 69 of the neck 52.

The bushing 65 has an upper part 65A connected to the body of the pouring funnel 57 and is also placed with a free end 658 to the anti-opening means 70.

It should be noted that in this form of the embodiment, the anti-opening means 70 is located below between the base 54 of the neck 52 of the bottle 51 and the end part 658 of the sleeve 65.

Also in this form of the embodiment, the anti-opening means 70 is made in the shape of a hoop and has an inner surface 70A and an outer surface 70B, where the inner surface 7/0A has a cylindrical area 70C connected to the upper end of the anti-opening means 70 by means of an inclined plane 700 to create an inclined plane for purposes and requirements to be described in more detail below.

The inclined plane 700 is placed at a certain angle relative to the X-X axis of the neck 52 of the bottle 51.

For example, this angle can take values between 30: and bOe2,

It should be noted that in this form of the embodiment, the anti-opening means 70 is located axially relative to the axis, or parallel to the X-X axis, between the base 54 of the bottle neck and the end part of the sleeve 65.

In this form of the variant embodiment, the anti-opening means 70 is held in the above-described position 7/0 by the connecting elements 81, which function as means of connection between the sleeve 65 and the anti-opening means 70. In particular, the connecting elements 81 can be spot welded or may be created by adhesive strips that break when the anti-opening means 70 are advanced toward the sleeve 65.

When tampering attempts are made to remove the bottle cap 80 with tools that can be inserted between the base of the bottle neck, a tool such as a screwdriver, a bottom-to-top force 75 or a substantial axial load is applied to the bottle cap 80. Therefore, under the action of such tools , the anti-opening means 70 is advanced to the end portion 65B of the sleeve: 65, due to the presence of the inclined plane 700.

Thus, with the invention, the consumer/buyer will have an immediate visual indication of any attempt to tamper with the bottle cap device.

Based on the above, we conclude that all presented bottle caps according to the invention are difficult to restore, since after an attempt to intervene, damage to many component parts is visible.

Obviously, a skilled specialist in this field, in the event of a collision of unforeseen and defined requirements, will be able to make a number of changes and create numerous options to the bottle caps described above, without going beyond the scope of the invention, which is defined in the following claims. with o

Claims (6)

The formula of the invention 1. A cap for bottles that is protected from obvious tampering, especially for bottles containing valuable beverages, i.e. the bottle (2, 51) has a neck (5, 54) which extends in the axial direction along the longitudinal axis (X- X) bottle (2, 51) from its base, which is connected to the bottle body; that) - neck (5, 54), has a hole (7, 56) at its free end; y - the lid contains the means of limiting (11, 59) the opening of the opening of the neck (5, 54) and is connected by a threaded connection to the pouring device (6, 55); Me) - the pouring device (6, 55) is connected to the sleeve (17, 65), located axially relative to the axis of the outer surface of the neck (5, 54); - ring means (18, 70) are located between the base of the neck (5, 54) and the lower end of the sleeve (17A, 658); the ring means (18, 70) and the lower end (17A, 658) of the sleeve (17, 65) have corresponding surfaces (11A, 18E, 65C, 700) which are pressed against each other, "which differs in that said ring means with connected by fragile connecting means (24, 64,81) - with a sleeve (17,65); - at least one of the pressure surfaces (11A, 18E, 65C, 700)) of the ring means (18, 70) and the lower end;" (17A, 658) are inclined relative to the longitudinal axis (X-X) of the neck (5, 54) in such a way that as a result of the axial movement of the annular means (18, 70) in the direction of the opening of the neck (5, 54), the fragile means break ( 24, 64, 82) and sequential radial movement of at least one ring zone of ring means (18, 70). -I 2. Tamper-proof bottle cap according to claim 1, characterized in that at least one of the surfaces (11A, 18E, 65C, 700) is inclined according to the longitudinal axis (X-X) with an angular and, with a value between 302 and 602, c C. Tamper-proof bottle cap according to claim 1, characterized in that the frangible connecting means (24, 64, 81) is an annular band. at 4. The tamper-evident bottle cap of claim 1, wherein the frangible connecting means (24, 64, 81) is an adhesive. 5. A cap for bottles, which is protected from obvious interference, according to paragraphs C and 4, which differs in that the ring means (18, 70) have a trapezoidal appearance in cross-section. 6. Tamper proof bottle cap according to claim 1, characterized in that there is an annular projection about the connecting frangible means (24, 64, 81). name) 60 b5