US3780897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stoppers
Assignee: Individual
•
Filing: 1971-02-08
•
Granted: 1973-12-25
•
Expires: 1991-02-08
Abstract
Abstract A container closure has a body, transverse closure means, a liquid-tight element having an annular face designed to place itself below and facing a non-cylindrical annular area of a container neck, and means capable of resilient deformation resting on the end face of the neck, so as to exert an axial traction on the body and to maintain the said annular face and area in mutual contact. The closure may be formed from a one piece blank.
Inventors
- 👤 V Wassilieff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:11
CPC Classifications
B; B65; B65D; B65D39/00; B65D39/04; B65D41/00; B65D41/32; B65D41/40; B65D41/44; B65D41/445; Y; Y10; Y10S; Y10S215/00; Y10S215/01
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
203 words
A container closure for a container provided with a neck having an end face and an internal side face with a re-entrant annular area, said closure being formed as a one-piece molding of resilient material comprising an axially extending body for insertion into the neck, transverse closure wall means, means integral with the body and capable of resiliently flexing in an axial direction by bearing upon said end face, a portion integral with the body and having an annular sealing face axially spaced below said resilient means, the flexion range of the latter being such that insertion of said portion and body into the neck and engagement of the resilient means with the end face of the container, followed by a downward axial thrust applied to the closure, is operative in flexing upwardly relatively to the body said resilient means bearing upon said end face to the extent required for enabling the annular sealing face to move down and take a position below and facing said re-entrant annular area, subsequent release of said thrust tending to raise the annular sealing face and causing it to sealingly engage the annular area, with said resilient means remaining flexed and said body maintained under axial traction.
Claim 2
Dependent Claim
203 words
A container closure for a container provided with a neck having an end face and an internal side face with a re-entrant annular area, said closure being formed as a one-piece molding of resilient material comprising an axially extending body for insertion into the neck, transverse closure wall means, means integral with the body and capable of resiliently flexing in an axial direction by bearing upon said end face, a portion integral with the body and having an annular sealing face axially spaced below said resilient means, the flexion range of the latter being such that insertion of said portion and body into the neck and engagement of the resilient means with the end face of the container, followed by a downward axial thrust applied to the closure, is operative in flexing upwardly relatively to the body said resilient means bearing upon said end face to the extent required for enabling the annular sealing face to move down and take a position below and facing said re-entrant annular area, subsequent release of said thrust tending to raise the annular sealing face and causing it to sealingly engage the annular area, with said resilient means remaining flexed and said body maintained under axial traction.
Claim 3
Dependent Claim
26 words
The closure of claim 1, wherein the body is radially dimensioned to be substantially free from contact with the internal side face of the container neck.
Claim 4
Dependent Claim
37 words
A closure according to claim 1, in which the sealing face is the upper face of a collar in the shape of a truncated cone flaring out downwards and connected to the body along its small base.
Claim 5
Dependent Claim
59 words
A closure according to claim 1, in which the body has on its outer face a part in the shape of a truncated cone flaring out downwards and comprising the above-mentioned sealing face, and also a part in the shape of a truncated cone converging downwards and located below the sealing face to facilitate the insertion of the closure.
Claim 6
Dependent Claim
24 words
A closure according to claim 4, in which the outer face of the body has an annular throat situated immediately above the sealing face.
Claim 7
Dependent Claim
34 words
A closure according to claim 5, in which the throat has an outline designed to receive an element of corresponding outline, comprising a ridge formed on the internal side face of the container neck.
Claim 8
Dependent Claim
26 words
A closure according to claim 1, in which the body is of hollow shape, and has a skirt, extending over at least part of its height.
Claim 9
Dependent Claim
69 words
A closure according to claim 1, further having an outer skirt designed to surround the container neck and provided on its inside face with at least one projection designed to enter a recess formed on the outer face of said neck, the said skirt, provided on its outer face with a tab located perpendicularly to the projection, being provided with two tear-off lines on either side of the tab.
Claim 10
Dependent Claim
16 words
A closure according to claim 1, including a gripping edge hidden by a wrenchable tear-off ring.
Claim 11
Dependent Claim
33 words
A closure according to claim 1, in which the body comprises two upper and lower portions joined together by a circular tear joint, the lower portion providing the sealing face of the closure.
Claim 12
Dependent Claim
50 words
A closure according to claim 1, in which the sealing face of the closure is formed of a compressible material, and is able to conform to the shape of the annular area of the container neck, under the action of an internal pressure exerted by the contents of the container.
Claim 13
Dependent Claim
25 words
A closure according to claim 1, mounted on a container having said neck, the annular area of the necK having a shape flaring out downwards.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |