Patent US3870183A successfully refreshed from Google Patents.
US3870183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure for liquid containers
Assignee: Molson Breweries of Canada Ltd
•
Filing: 1973-04-09
•
Granted: 1975-03-11
•
Expires: 1993-04-09
Abstract
Abstract A closure for liquid containers such as those in which beverages may be stored and sold, and from which the liquid is withdrawn through a hollow tube inserted through the disclosure under the influence of gas pressure exerted against the liquid within the container and communicated thereto from a source of pressurized gas external to the container. The closure is made from a deformable material such as rubber, and when pierced by a tube will form a substantially gas and liquid-tight seal around that tube. The disclosure has a diaphragm portion of lesser thickness than the remaining gasket portion of the closure which directly overlies the interior of the liquid container. A flange is formed around the closure and has an annular upwardly extending rim formed on the upper surface thereof.
Inventors
- 👤 John Luczkiw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:31
CPC Classifications
B; B65; B65D; B65D39/00; B65D39/04; B65D51/00; B65D51/002
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
294 words
A closure for liquid containers from which the liquid therein is to be withdrawn through a hollow tube inserted into said container through said closure, when said liquid is acted against by gas pressure within said container and communicated thereto from a source of pressurized gas external to said container; said closure being of a deformable material which may be pierced by said tube and which, when pierced with said tube extending therefrom, forms a substantially gas and liquid-tight seal around said tube; said closure being adapted to be fitted into an opening in said container, and having a peripheral neck portion formed therein and dimensioned so as to form a substantially gas and liquid-tight seal between the closure and the edges of said opening; said closure having an upwardly extending channel formed in the underside thereof for communication with the interior of said container, said channel having an annular wall; a gasket portion overlying said upwardly extending channel and having a diaphragm portion formed therein, said diaphragm portion being of lesser thickness than said gasket portion and with its upper surface recessed below the upper surface of said gasket portion; a flange portion surrounding said gasket portion and below the upper surface thereof; an annular upwardly extending rim formed on the upper surface of said flange portion, the height of said annular rim being such that the top thereof tends to interfere with the edges of said gasket portion when said flange portion is turned upwardly at any place; the diameter of said diaphragm portion being such as to accommodate the neck portion of a tapping device in which said tube is secured, the diameter of said upwardly extending channel being greater than the diameter of said neck portion of said tapping device.
Claim 2
Dependent Claim
294 words
A closure for liquid containers from which the liquid therein is to be withdrawn through a hollow tube inserted into said container through said closure, when said liquid is acted against by gas pressure within said container and communicated thereto from a source of pressurized gas external to said container; said closure being of a deformable material which may be pierced by said tube and which, when pierced with said tube extending therefrom, forms a substantially gas and liquid-tight seal around said tube; said closure being adapted to be fitted into an opening in said container, and having a peripheral neck portion formed therein and dimensioned so as to form a substantially gas and liquid-tight seal between the closure and the edges of said opening; said closure having an upwardly extending channel formed in the underside thereof for communication with the interior of said container, said channel having an annular wall; a gasket portion overlying said upwardly extending channel and having a diaphragm portion formed therein, said diaphragm portion being of lesser thickness than said gasket portion and with its upper surface recessed below the upper surface of said gasket portion; a flange portion surrounding said gasket portion and below the upper surface thereof; an annular upwardly extending rim formed on the upper surface of said flange portion, the height of said annular rim being such that the top thereof tends to interfere with the edges of said gasket portion when said flange portion is turned upwardly at any place; the diameter of said diaphragm portion being such as to accommodate the neck portion of a tapping device in which said tube is secured, the diameter of said upwardly extending channel being greater than the diameter of said neck portion of said tapping device.
Claim 3
Dependent Claim
294 words
A closure for liquid containers from which the liquid therein is to be withdrawn through a hollow tube inserted into said container through said closure, when said liquid is acted against by gas pressure within said container and communicated thereto from a source of pressurized gas external to said container; said closure being of a deformable material which may be pierced by said tube and which, when pierced with said tube extending therefrom, forms a substantially gas and liquid-tight seal around said tube; said closure being adapted to be fitted into an opening in said container, and having a peripheral neck portion formed therein and dimensioned so as to form a substantially gas and liquidtight seal between the closure and the edges of said opening; said closure having an upwardly extending channel formed in the underside thereof for communication with the interior of said container, said channel having an annular wall; a gasket portion overlying said upwardly extending channel and having a diaphragm portion formed therein, said diaphragm portion being of lesser thickness than said gasket portion and with its upper surface recessed below the upper surface of said gasket portion; a flange portion surrounding said gasket portion and below the upper surface thereof; an annular upwardly extending rim formed on the upper surface of said flange portion, the height of said annular rim being such that the top thereof tends to interfere with the edges of said gasket portion when said flange portion is turned upwardly at any place; the diameter of said diaphragm portion being such as to accommodate the neck portion of a tapping device in which said tube is secured, the diameter of said upwardly extending channel being greater than the diameter of said neck portion of said tapping device.
Claim 4
Dependent Claim
294 words
A closure for liquid containers from which the liquid therein is to be withdrawn through a hollow tube inserted into said container through said closure, when said liquid is acted against by gas pressure within said container and communicated thereto from a source of pressurized gas external to said container; said closure being of a deformable material which may be pierced by said tube and which, when pierced with said tube extending therefrom, forms a substantially gas and liquid-tight seal around said tube; said closure being adapted to be fitted into an opening in said container, and having a peripheral neck portion formed therein and dimensioned so as to form a substantially gas and liquidtight seal between the closure and the edges of said opening; said closure having an upwardly extending channel formed in the underside thereof for communication with the interior of said container, said channel having an annular wall; a gasket portion overlying said upwardly extending channel and having a diaphragm portion formed therein, said diaphragm portion being of lesser thickness than said gasket portion and with its upper surface recessed below the upper surface of said gasket portion; a flange portion surrounding said gasket portion and below the upper surface thereof; an annular upwardly extending rim formed on the upper surface of said flange portion, the height of said annular rim being such that the top thereof tends to interfere with the edges of said gasket portion when said flange portion is turned upwardly at any place; the diameter of said diaphragm portion being such as to accommodate the neck portion of a tapping device in which said tube is secured, the diameter of said upwardly extending channel being greater than the diameter of said neck portion of said tapping device.
Claim 5
Dependent Claim
21 words
The closure of claim 1 where the undersurface of said diaphragm portion is above the under surface of said gasket portion.
Claim 6
Dependent Claim
81 words
The closure of claim 1 where said gasket portion forms a generally truncated cone above said flange portion and is surrounded thereby; and where said truncated cone is dimensioned to interfere with and be deformed by a downwardly extending annular wall spaced from and surrounding the upper portion of said neck portion of said tapping device so as to form a gas pressure chamber above said gasket portion and within the area defined by said annular wall of said tapping device.
Claim 7
Dependent Claim
38 words
The apparatus of claim 3 where a slit is formed in said neck portion of said tapping device and gas pressure communication is realized through said slit from said gas pressure chamber to the interior of said container.
References Cited (Backward Citations)
US2342215A
Cited
US2608972A
Cited
US2781141A
Cited
US2783908A
Cited
US2755951A
Cited
US2907489A
Cited
US3198368A
Cited
US3343699A
Cited
US3653528A
Cited
US3685680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |