Patent US3628704A successfully refreshed from Google Patents.
US3628704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container with venting gasket
Assignee: Diamond International Corp
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Filing: 1969-12-10
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Granted: 1971-12-21
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Expires: 1989-12-10
Abstract
Abstract A combination gasket and venting member including a gasket portion clamped between the closure cap and the neck of a container in sealing engagement with the neck and further including a flexible annular diaphragm encircled by the gasket portion. The diaphragm extends over the filling and dispensing opening of the container neck and defines a centrally located valve port communicating with such opening and adapted to seat against the underside of the closure cap. A groove extending across the upper face of the gasket portion from the outer periphery of the latter, where it communicates with the atmosphere, admits atmospheric air above the diaphragm to depress the central portion thereof away from the closure cap when atmospheric pressure exceeds the pressure within the container, thus to admit atmospheric air through the port into the container. In one embodiment the closure cap is formed with an outlet opening positioned for communication with the said port.
Inventors
- 👤 Douglas F Corsette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:01
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/02; B65D41/04; B65D41/0435; B65D41/045; B65D51/00; B65D51/16; B65D51/1633; B65D51/1661
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
172 words
A flexible walled container, having an externally threaded neck defining a filling and dispensing opening, and a removable closure comprising an internally threaded skirt operatively disposed on said neck, said closure including a top wall overlying the end of said neck, in combination with: an annular flexible diaphragm having its outer periphery clamped between said closure top wall and said container neck, said closure defining a product outlet; said diaphragm having an inner periphery communicating with said product outlet and defining an air inlet and product discharge port for said container; means normally resiliently biasing said inner periphery of the diaphragm into sealing engagement with said closure around said product outlet; and means separate from said product outlet for admitting atmospheric air between said top wall of the cap and said diaphragm, whereby to unseat said diaphragm from sealing relation with said closure and to admit atmospheric air through said port into the container independently of the product outlet when the pressure within the container drops appreciably below that of the atmosphere.
Claim 2
Dependent Claim
172 words
A flexible walled container, having an externally threaded neck defining a filling and dispensing opening, and a removable closure comprising an internally threaded skirt operatively disposed on said neck, said closure including a top wall overlying the end of said neck, in combination with: an annular flexible diaphragm having its outer periphery clamped between said closure top wall and said container neck, said closure defining a product outlet; said diaphragm having an inner periphery communicating with said product outlet and defining an air inlet and product discharge port for said container; means normally resiliently biasing said inner periphery of the diaphragm into sealing engagement with said closure around said product outlet; and means separate from said product outlet for admitting atmospheric air between said top wall of the cap and said diaphragm, whereby to unseat said diaphragm from sealing relation with said closure and to admit atmospheric air through said port into the container independently of the product outlet when the pressure within the container drops appreciably below that of the atmosphere.
Claim 3
Dependent Claim
49 words
A container as defined in claim 1, in which said container closure includes a dispensing spout defining said product outlet, the interior of said spout at its lower end portion being of outwardly diverging conical configuration defining said valve seat for cooperation with said inner periphery of the diaphragm.
Claim 4
Dependent Claim
79 words
A container as defined in claim 1, in which the inner end portion of said outlet defines said valve seat, said valve seat being of downwardly converging frustoconical configuration, the inner peripheral portion of the diaphragm around said port also being of frustoconical configuration diverging downwardly at a smaller angle than said valve seat to define an annular air chamber between said closure and the diaphragm around said port, said chamber communicating with said means for admitting atmospheric air.
References Cited (Backward Citations)
US3174641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |