US3717276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vented closure
Assignee: OI Glass Inc
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Filing: 1971-02-12
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Granted: 1973-02-20
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Expires: 1991-02-12
Abstract
Abstract This invention relates to a venting plastic liner cap and a twopiece closure for pressurizable containers packaging products such as beer, carbonated beverages and the like. The liner serves to seal the mouth of the container under an outer metal cap provided with a pull tab and tear strip for removal. Pressure is vented through a central aperture of the liner top and into radial channels that extend as the spokes of a wheel. Effective release of internal pressure, upon opening the closure, is provided regardless of where the tear strip of the outer cap is initiated. This construction obviates registration or index of the two parts in closure assembly on the container. Two channel embodiments comprise: (1) a series of depressed radial channels and an outer annular channel interconnected therewith, or (2) a series of radial ribs or projections on the cap that provide radial passageways from the center of the cap; either of these venting gas passing through the center aperture.
Inventors
- 👤 T Luczak
- 👤 L Pudlicki
- 👤 C Richie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:11
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/16; B65D51/1605; B65D51/1611
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
171 words
A liner cap for a container closure adapted to telescope over the annular mouth defining rim of a container, said cap comprising a top portion, an annular skirt and a corner radius portion integrally, peripherally joining the top portion and the upper end of said annular skirt portion, a vent aperture through said top portion and disposed in the central area of said top portion, radial channel means on the outer surface of said top portion extending radially toward said corner radius portion and connecting with said aperture for conducting vented pressure media from said aperture radially outwardly of said top portion, said radial channel means comprising plural radial grooves depressed in the outer surface of said top portion, and an annular groove formed in the outer surface of said top portion and disposed in the outer peripheral area of said top portion, the plural grooves being connected into said annular groove and having each of their radially inwardly disposed ends connected to said vent aperture to receive vented media therefrom.
Claim 2
Dependent Claim
171 words
A liner cap for a container closure adapted to telescope over the annular mouth defining rim of a container, said cap comprising a top portion, an annular skirt and a corner radius portion integrally, peripherally joining the top portion and the upper end of said annular skirt portion, a vent aperture through said top portion and disposed in the central area of said top portion, radial channel means on the outer surface of said top portion extending radially toward said corner radius portion and connecting with said aperture for conducting vented pressure media from said aperture radially outwardly of said top portion, said radial channel means comprising plural radial grooves depressed in the outer surface of said top portion, and an annular groove formed in the outer surface of said top portion and disposed in the outer peripheral area of said top portion, the plural grooves being connected into said annular groove and having each of their radially inwardly disposed ends connected to said vent aperture to receive vented media therefrom.
Claim 3
Dependent Claim
171 words
A liner cap for a container closure adapted to telescope over the annular mouth defining rim of a container, said cap comprising a top portion, an annular skirt and a corner radius portion integrally, peripherally joining the top portion and the upper end of said annular skirt portion, a vent aperture through said top portion and disposed in the central area of said top portion, radial channel means on the outer surface of said top portion extending radially toward said corner radius portion and connecting with said aperture for conducting vented pressure media from said aperture radially outwardly of said top portion, said radial channel means comprising plural radial grooves depressed in the outer surface of said top portion, and an annular groove formed in the outer surface of said top portion and disposed in the outer peripheral area of said top portion, the plural grooves being connected into said annular groove and having each of their radially inwardly disposed ends connected to said vent aperture to receive vented media therefrom.
Claim 4
Dependent Claim
171 words
A liner cap for a container closure adapted to telescope over the annular mouth defining rim of a container, said cap comprising a top portion, an annular skirt and a corner radius portion integrally, peripherally joining the top portion and the upper end of said annular skirt portion, a vent aperture through said top portion and disposed in the central area of said top portion, radial channel means on the outer surface of said top portion extending radially toward said corner radius portion and connecting with said aperture for conducting vented pressure media from said aperture radially outwardly of said top portion, said radial channel means comprising plural radial grooves depressed in the outer surface of said top portion, and an annular groove formed in the outer surface of said top portion and disposed in the outer peripheral area of said top portion, the plural grooves being connected into said annular groove and having each of their radially inwardly disposed ends connected to said vent aperture to receive vented media therefrom.
Claim 5
Dependent Claim
19 words
the liner cap defined in claim 1, wherein said aperture is located at the center of said top portion.
Claim 6
Dependent Claim
22 words
The liner cap defined in claim 1, wherein said plural radial grooves are disposed at equal angular intervals about said top portion.
Claim 7
Dependent Claim
42 words
The liner cap defined in claim 1, including a depressed well area in the outer surface of said top portion, said aperture extending through the top portion in said well area, and each of the radial grooves connecting into said well area.
Claim 8
Dependent Claim
22 words
The liner cap defined in claim 4, wherein said well area comprises a circular well and the aperture is centrally located therein.
Claim 9
Dependent Claim
17 words
The liner cap defined in claim 1, in which said cap is formed from a plastic material.
Claim 10
Dependent Claim
13 words
The liner cap defined in claim 6, wherein said plastic material comprises polyethylene.
Claim 11
Dependent Claim
121 words
A liner cap for a container closure adapted to telescope over the annular mouth defining rim of a container, said cap comprising a top portion, an annular skirt and a corner radius portion integrally peripherally joining the top portion and the upper end of said annular skirt portion, a vent aperture through said top portion and disposed in the central area of said top portion, and plural, spaced, radial ribs on the outer surface of said top portion, said ribs forming a spaced therebetween from said aperture outwardly and radially therefrom for passage of vented media from the aperture, said ribs at their outer radial ends being spaced inwardly in said top portion from said corner radius portion of the cap.
Claim 12
Dependent Claim
121 words
A liner cap for a container closure adapted to telescope over the annular mouth defining rim of a container, said cap comprising a top portion, an annular skirt and a corner radius portion integrally peripherally joining the top portion and the upper end of said annular skirt portion, a vent aperture through said top portion and disposed in the central area of said top portion, and plural, spaced, radial ribs on the outer surface of said top portion, said ribs forming a spaced therebetween from said aperture outwardly and radially therefrom for passage of vented media from the aperture, said ribs at their outer radial ends being spaced inwardly in said top portion from said corner radius portion of the cap.
Claim 13
Dependent Claim
47 words
The liner cap defined in claim 8, wherein said plural ribs define plural channels along the outer surface of said top portion, the ribs being spaced at their inner radial ends from said aperature and each other, said channels being interconnected to each other near said aperture.
Claim 14
Dependent Claim
189 words
A closure for sealing the mouth opening of a container, said mouth being formed by a finish rim of the container, comprising a liner cap having a disc-like portion covering the mouth opening of the container, said liner being comprised of an elastomeric maTerial, a vent means in the central area of said disc-like portion for conducting vented media relative to the interior of the container, plural radially extending grooves in the outer surface of said disc-like portion extending from the proximity of said vent means and extending radially toward the perimeter of said disc-like portion, an endless annular groove in said disc-like portion disposed near the outer ends of said radial grooves, said annular groove and said radial grooves being interconnected for transmission of vented media, a cap having a top portion overlying the disc-like portion of said liner cap and a radial annular integral skirt portion surrounding the finish rim and securing the closure on the container, and a rupturable convenience-opening tear strip formed in said top portion of the cap, said strip traversing at least one of said plural radial grooves in the underlying liner cap.
Claim 15
Dependent Claim
189 words
A closure for sealing the mouth opening of a container, said mouth being formed by a finish rim of the container, comprising a liner cap having a disc-like portion covering the mouth opening of the container, said liner being comprised of an elastomeric maTerial, a vent means in the central area of said disc-like portion for conducting vented media relative to the interior of the container, plural radially extending grooves in the outer surface of said disc-like portion extending from the proximity of said vent means and extending radially toward the perimeter of said disc-like portion, an endless annular groove in said disc-like portion disposed near the outer ends of said radial grooves, said annular groove and said radial grooves being interconnected for transmission of vented media, a cap having a top portion overlying the disc-like portion of said liner cap and a radial annular integral skirt portion surrounding the finish rim and securing the closure on the container, and a rupturable convenience-opening tear strip formed in said top portion of the cap, said strip traversing at least one of said plural radial grooves in the underlying liner cap.
Claim 16
Dependent Claim
24 words
The closure defined in claim 10, wherein each said groove is formed in said disc-like portion outer surface and is semi-circular in cross-sectional configuration.
Claim 17
Dependent Claim
20 words
The closure defined in claim 10, wherein said radial grooves are disposed at equal angular intervals about said disc-like portion.
Claim 18
Dependent Claim
24 words
The closure defined in claim 10, wherein the elastomeric liner cap is comprised of polyethylene and the outer said cap is comprised of aluminum.
References Cited (Backward Citations)
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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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |