US3874541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bottle stopper
Assignee: Saint Gobain Industries SA
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Filing: 1972-02-23
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Granted: 1975-04-01
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Expires: 1992-02-23
Abstract
Abstract Combination of bottle neck and stopper therefor in which frustoconical internal and external coaxial surfaces of the neck and stopper respectively, cooperate to move a resilient sealing ring upwardly on and along the external surface of the stopper, by and in response to insertion of the stopper into the neck until, in final upward position the stretched ring snaps into an annular channel in the stopper and at the same time sealingly engages an inwardly curled rim at the top of the bottle neck. In this final position an external flange integral with the stopper engages the top surface of the rim and assists in effecting a gas- and liquid-tight seal of the stopper with the neck. The construction is particularly suitable for use with bottles of synthetic plastic material and in containing liquids with occluded gas such as beer, soda water, etc. because the seal effected by the ring increases in effectiveness with increase in gas pressure within the bottle.
Inventors
- 👤 Jean Lagneaux
- 👤 Leon Roger Vermeerbergen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:03
CPC Classifications
B; B65; B65D; B65D39/00; B65D39/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
198 words
The combination, with a bottle neck flared outwardly and upwardly at its upper end to define an internal inverted frustoconical surface surmounted by an inwardly curled rim, of a hollow stopper formed to fit said neck and to define an external second inverted frusto-conical surface of lesser generating angle than said first surface and surmounted at its top by an annular outwardly facing channel, a sealing ring movable along said second surface from a first position about the smaller diameter thereof, to a second position in said channel, said surfaces cooperating in response to insertion of said stopper into said neck, into a final sealing position therein, to cam said ring from first to second position wherein the same makes sealing contact with said rim, said channel and rim being so dimEnsioned that the radially innermost point of contact of said rim with said sealing ring and the outermost point of contact of said sealing ring with the lower part of said channel are spaced from each other by more than 180* of angular measure of the crosssection of said sealing ring measured from the center of said cross-section radially inwardly toward the axis of the bottle neck.
Claim 2
Dependent Claim
198 words
The combination, with a bottle neck flared outwardly and upwardly at its upper end to define an internal inverted frustoconical surface surmounted by an inwardly curled rim, of a hollow stopper formed to fit said neck and to define an external second inverted frusto-conical surface of lesser generating angle than said first surface and surmounted at its top by an annular outwardly facing channel, a sealing ring movable along said second surface from a first position about the smaller diameter thereof, to a second position in said channel, said surfaces cooperating in response to insertion of said stopper into said neck, into a final sealing position therein, to cam said ring from first to second position wherein the same makes sealing contact with said rim, said channel and rim being so dimEnsioned that the radially innermost point of contact of said rim with said sealing ring and the outermost point of contact of said sealing ring with the lower part of said channel are spaced from each other by more than 180* of angular measure of the crosssection of said sealing ring measured from the center of said cross-section radially inwardly toward the axis of the bottle neck.
Claim 3
Dependent Claim
34 words
The combination of claim 1, said channel being surmounted by a radially and outwardly extending yielding flange, said flange sealingly pressing down on said rim when said stopper in in said final sealing position.
Claim 4
Dependent Claim
45 words
The combination of claim 1, the lower part of said neck being generally cylindrical internally, the juncture between said cylindrical neck part and first surface forming an annular ridge, said ridge sealingly engaging said second surface when said stopper is in said final sealing position.
Claim 5
Dependent Claim
23 words
The combination of claim 1, in which the generating angles of said first-named and second-named frusto-conical surfaces are about 60* and 30*, respectively.
Claim 6
Dependent Claim
28 words
The combination of claim 1, said channel being semicircular in transverse section, said ring being an O-ring having a radius about the same as that of said channel.
Claim 7
Dependent Claim
39 words
The combination of claim 5, the interior lower surface of said neck being cylindrical, said ring having a diametral cross section of diameter about two-thirds the difference between the diameter of said rim and that of said cylindrical surface.
Claim 8
Dependent Claim
42 words
The combination of claim 1, an erect third frusto-conical surface integral with and extending coaxially downwardly from said second and inverted frusto-conical surface, said second and third surfaces defining at their juncture a constriction retaining said ring releasably in said first position.
Claim 9
Dependent Claim
26 words
The combination of claim 7, said constriction being annular and having a diameter less than the internal diameter of the lower cylindrical portion of said neck.
Claim 10
Dependent Claim
41 words
The combination of claim 7, said stopper being hollow, the larger and lower end of said third surface forming a yielding annular edge sealingly engaging the lower internal surface of the neck when said stopper is in said final sealing position.
Claim 11
Dependent Claim
56 words
The combination of claim 9, said channel being surmounted by a radially outwardly extending yielding integral flange, said flange pressing down on said rim when said stopper is in said final sealing position, a cap surmounting said flange and closing the top end of said stopper, and a weakened band integrally uniting said stopper and cap.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |