EP0004500B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Plastic tamperproof closure and mould for the manufacture thereof
Assignee: CAPTOCAP Ltd
•
Filing: 1979-03-13
•
Granted: 1982-07-28
•
Expires: 1999-03-13
Abstract
No abstract record available.
Inventors
- 👤 Fernand Hilaire
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 10:30
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/32; B65D41/34; B65D41/3442; B65D41/3447; B29; B29C; B29C45/00; B29C45/17; B29C45/40; B29C45/44; B29C45/4407; B29L; B29L2031/00; B29L2031/56; B29L2031/565; B65D2401/00; B65D2401/15; B65D2401/30; B65D2401/35; B65D2401/40
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
238 words
Pilfer-proof closure cap of plastic material for sealing containers of various types, this closure cap (1) being constituted by an internally threaded shell (4) which is intended to be screwed on the neck (3) of the container (2), a ring (10a) which is intended to be applied beneath an annular projection (12) formed on the neck of the container and an annular flange (15) joined to the shell (4), the said ring (10a) being joined to the shell (4) by bridges (14) of plastic material designed to tear-off at the time of unscrewing of the cap, this ring (1 Oa) and these bridges (14) being located substantially in the line of extension of the lateral wall of the shell (4) and the free end of the ring (10a) being provided with an annular rib (11) which is intended to be applied against this annular projection (12) of the neck (3) of the container, characterized in that the ring (10a) is provided in the vertical direction at the level of the rib (11) with a tearable portion of reduced thickness (10b) and that at least one bridge (14a) having a larger cross-sectional area than the other bridges (14) is disposed substantially opposite to the said portion of reduced thickness (10b), with the result that the ring (10a) remains attached to the closure cap (1) by means of the said bridge of larger cross-sectional area after unscrewing of this latter.
Claim 2
Dependent Claim
238 words
Pilfer-proof closure cap of plastic material for sealing containers of various types, this closure cap (1) being constituted by an internally threaded shell (4) which is intended to be screwed on the neck (3) of the container (2), a ring (10a) which is intended to be applied beneath an annular projection (12) formed on the neck of the container and an annular flange (15) joined to the shell (4), the said ring (10a) being joined to the shell (4) by bridges (14) of plastic material designed to tear-off at the time of unscrewing of the cap, this ring (1 Oa) and these bridges (14) being located substantially in the line of extension of the lateral wall of the shell (4) and the free end of the ring (10a) being provided with an annular rib (11) which is intended to be applied against this annular projection (12) of the neck (3) of the container, characterized in that the ring (10a) is provided in the vertical direction at the level of the rib (11) with a tearable portion of reduced thickness (10b) and that at least one bridge (14a) having a larger cross-sectional area than the other bridges (14) is disposed substantially opposite to the said portion of reduced thickness (10b), with the result that the ring (10a) remains attached to the closure cap (1) by means of the said bridge of larger cross-sectional area after unscrewing of this latter.
Claim 3
Dependent Claim
230 words
Pilfer-proof closure cap of plastic material for sealing containers of various types, this closure cap (1) being constituted by an internally threaded shell (4) which is intended to be screwed on the neck (3) of the container (2), a ring (10c) being intended to be applied beneath an annular projection (12) formed on the neck of the container and an annular flange (15) which is joined to the shell (4), the said ring (10c) being joined to the shell (4) by means of bridges (14) of plastic material which are tearable at the time of unscrewing of the closure cap, this ring (10c) and these bridges (14) being located substantially in the line of extension of the lateral wall of the shell (4) and the free end of the ring (1 Oc) has an annular rib (11 a) which is intended to be applied against this annular projection (12) of the neck (1) of the container, characterized in that the annular rib (11 a) of the ring (10c) extends over less than one-half of the circumference of the ring and that at least one bridge (14b) of larger cross-sectional area than the other bridges (14) is disposed substantially opposite to tl¡is rib, with the result that the ring (10c) remains attached to the closure cap (1) by means of said bridge of larger cross-sectional area after unscrewing of this latter.
Claim 4
Dependent Claim
230 words
Pilfer-proof closure cap of plastic material for sealing containers of various types, this closure cap (1) being constituted by an internally threaded shell (4) which is intended to be screwed on the neck (3) of the container (2), a ring (10c) being intended to be applied beneath an annular projection (12) formed on the neck of the container and an annular flange (15) which is joined to the shell (4), the said ring (10c) being joined to the shell (4) by means of bridges (14) of plastic material which are tearable at the time of unscrewing of the closure cap, this ring (10c) and these bridges (14) being located substantially in the line of extension of the lateral wall of the shell (4) and the free end of the ring (1 Oc) has an annular rib (11 a) which is intended to be applied against this annular projection (12) of the neck (1) of the container, characterized in that the annular rib (11 a) of the ring (10c) extends over less than one-half of the circumference of the ring and that at least one bridge (14b) of larger cross-sectional area than the other bridges (14) is disposed substantially opposite to tl¡is rib, with the result that the ring (10c) remains attached to the closure cap (1) by means of said bridge of larger cross-sectional area after unscrewing of this latter.
Claim 5
Dependent Claim
78 words
Closure cap in accordance with one of claims 1 or 2, characterized in that the annular flange (15) joined to the shell (4) surrounds the bridges (14) and defines between the said shell and the bridges an annular space of sufficient width to permit of outward expansion of the ring at the time of engagement thereof on the annular projection of the neck (3) of the container (2) at the moment of screwing of the closure cap (1).
Claim 6
Dependent Claim
24 words
Closure cap in accordance with claim 3, characterized in that the annular flange (15) constitutes a stop for limiting expansion of the ring (10).
Claim 7
Dependent Claim
58 words
Closure cap in accordance with any one of claims 1 to 4, the shell (4) being provided on its external face with splines (17) or projections constituting a friction surface for gripping the cap (1) with one's fingers, characterized in that the annular flange (15) of the shell (4) forms a projection relative to the friction surface aforesaid.
Claim 8
Dependent Claim
44 words
Closure cap in accordance with any one of claims 1 to 5, characterized in that the bottom of the shell (4) is provided with a circular tongue (9) which is adapted to bear laterally and hermetically against the neck (3) of the container (2).
Claim 9
Dependent Claim
213 words
Mould for the fabrication of the closure cap in accordance with any one of claims 1 to 6, comprising a die (20) having an internal cavity (25) corresponding to the external surface of the shell (4) of the closure cap to be moulded, an ejection plate (21) being provided with a bore (27) corresponding to the external surface of the ring (10) of the cap, an ejection sleeve (22) which is slidably mounted within the said bore (27) and within the interior of which is slidably mounted a core (23), the upper portion of which is provided with the internal impression of the cap to be moulded, this core (23) being traversed axially by a push-up plunger (24) whose head (24a) is intended to be applied against the end wall (7) of the cap to be moulded, characterized in that the core (23) is provided behind the grooves (30) corresponding to the screw-threads (5) of the shell (4) of the cap to be moulded and, in front of the annular reverse draw-taper (31) corresponding to the bridges (14), with a projecting annular rib (32) for holding the cap shell away from the surface of the core under the action of the thrust exerted on the end of the ring by the ejection sleeve.
Claim 10
Dependent Claim
41 words
Mould in accordance with claim 7, characterized in that the ejection plate (21) is provided on that face (28) which is adjacent to the die (20) with an annular groove (29) for moulding the annular flange (15) of the closure cap.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.