PT74017A - Safety screw cap for bottles etc. - has tear=off safety ring with snap locking protrusion on inner side firmly securing behind radial bead - Google Patents
Safety screw cap for bottles etc. - has tear=off safety ring with snap locking protrusion on inner side firmly securing behind radial beadInfo
- Publication number
- PT74017A PT74017A PT7401781A PT7401781A PT74017A PT 74017 A PT74017 A PT 74017A PT 7401781 A PT7401781 A PT 7401781A PT 7401781 A PT7401781 A PT 7401781A PT 74017 A PT74017 A PT 74017A
- Authority
- PT
- Portugal
- Prior art keywords
- cap
- safety
- tear
- screw cap
- locking protrusion
- Prior art date
Links
Abstract
The screw cap is made from plastics and has an internal screw thread in its upper part and a skirt (26) forming its lower part. The bottle neck (23) has a conical region, below the screw thread (21), which terminates in a ridge (23a) with a shoulder (30) beneath its lower edge. The cap skirt is attached to the body of the cap by a number of small bridges (27). The lower edge (31) of the skirt is folded inwards and upwards so that it fits over the screw thread ridge and abuts against the shoulder with a snap action. This snap action locks the cap in position so that it can only be removed by applying a twisting force to the cap which is sufficient to tear the bridge ring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PT7401781A PT74017B (en) | 1981-11-20 | 1981-11-20 | SCREW CAP WITH ORIGINALITY ASSURANCE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PT7401781A PT74017B (en) | 1981-11-20 | 1981-11-20 | SCREW CAP WITH ORIGINALITY ASSURANCE |
Publications (2)
Publication Number | Publication Date |
---|---|
PT74017A true PT74017A (en) | 1981-12-01 |
PT74017B PT74017B (en) | 1983-03-31 |
Family
ID=20083022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PT7401781A PT74017B (en) | 1981-11-20 | 1981-11-20 | SCREW CAP WITH ORIGINALITY ASSURANCE |
Country Status (1)
Country | Link |
---|---|
PT (1) | PT74017B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0329640A1 (en) * | 1988-02-16 | 1989-08-23 | Dietmar F. Aichinger | Tamper-evident closure for a container and injection mould for the manufacture of the closure |
-
1981
- 1981-11-20 PT PT7401781A patent/PT74017B/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0329640A1 (en) * | 1988-02-16 | 1989-08-23 | Dietmar F. Aichinger | Tamper-evident closure for a container and injection mould for the manufacture of the closure |
WO1989007557A1 (en) * | 1988-02-16 | 1989-08-24 | Aichinger Dietmar F | Tamperproof closure for containers and injection moulding tool for manufacturing said closure |
Also Published As
Publication number | Publication date |
---|---|
PT74017B (en) | 1983-03-31 |
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