EP0119788A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Improvements relating to closures
Assignee: Arconic Closure Systems International UK Ltd
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Filing: 1984-03-07
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Granted: —
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Expires: 2004-03-07
Abstract
Abstract A moulded plastics closure for a container having a screw-threaded neck has a top 11 and a depending skirt 12 with an internal screw-thread ridge 13. A sealing rib 14 projects radially inward from the skirt above the ridge 13. The central area of the top 11 is in the form of a well, the bottom wall 25 of which is concavely curved. The side wall 26 of the well and a downward extension 30 thereof provide an outwardly projecting rib 28. The top of the neck of the container is received between ribs 14 and 28 which form seals with the external and internal surfaces of the neck. Additional ribs 20 project into sealing contact with the top end of the neck.
Inventors
- 👤 Peter Reginald Haines
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 04:31
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/02; B65D41/04; B65D41/0407; B65D41/0414; B65D41/0421
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
139 words
A closure for a container having an externally screw-threaded neck, said closure being moulded in one piece from a resilient plastics material and comprising a top and a depending skirt which has on its internal surface a screw-thread ridge and a first annular sealing rib which is disposed between the ridge and the top and which projects radially inward beyond the crest of said ridge to form a seal with the radially outer face of the neck by outward deformation of the rib, said top having-a depressed central portion forming a well the side wall of which, on a downward extension of the side wall of which, has on its radially outer surface a radially outwardly projecting second annular sealing rib for forming a seal with the internal surface of the neck by radially inward deformation of the rib.
Claim 2
Dependent Claim
139 words
A closure for a container having an externally screw-threaded neck, said closure being moulded in one piece from a resilient plastics material and comprising a top and a depending skirt which has on its internal surface a screw-thread ridge and a first annular sealing rib which is disposed between the ridge and the top and which projects radially inward beyond the crest of said ridge to form a seal with the radially outer face of the neck by outward deformation of the rib, said top having-a depressed central portion forming a well the side wall of which, on a downward extension of the side wall of which, has on its radially outer surface a radially outwardly projecting second annular sealing rib for forming a seal with the internal surface of the neck by radially inward deformation of the rib.
Claim 3
Dependent Claim
17 words
A closure as claimed in claim 1, wherein the bottom wall of said well is concavely curved.
Claim 4
Dependent Claim
17 words
A closure as claimed in claim I, wherein the bottom wall of said well is convexly curved.
Claim 5
Dependent Claim
33 words
A closure as claimed in any one of the preceding claims, wherein said second sealing rib is located opposite the point at which the bottom wall of the well joins said side wall.
Claim 6
Dependent Claim
39 words
A closure as claimed in any one of the preceding claims, wherein said downward extension, where provided, as the radially outer surface thereof chamfered to form a lead-in, below the second sealing rib, for the neck of the bottle.
Claim 7
Dependent Claim
21 words
A closure as claimed in any one of the preceding claims, wherein the tip of said first sealing rib is radiussed.
Claim 8
Dependent Claim
52 words
A closure as claimed in any one of the preceding claims, wherein at least one additional annular sealing rib projects downward from the top of the ·closure at a location between and spaced from the skirt and said side wall of the well for engagement with the top end of said neck.
Claim 9
Dependent Claim
35 words
A closure as claimed in any one of the preceding claims in which the portion of the skirt extending upward from the position of the first sealing rib to the top is conically inclined inward.
References Cited (Backward Citations)
No citation records indexed.
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