US3823848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing plug for a container
Assignee: COORS A CO
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Filing: 1972-08-29
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Granted: 1974-07-16
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Expires: 1992-08-29
Abstract
Abstract A sealing plug for insertion in the tap hole of a container, comprising a cylindrical body having a uniform diameter portion, said body having means extending radially outwardly on its upper end for manual gripping for withdrawal of the plug from the hole and for preventing pushing of the plug from the hole into the container, and having means on its lower end for preventing ejection of the plug from the hole without hindering the insertion of the plug into the hole. The uniform diameter body of the plug fits snugly within and in sealing contact with a collar defining the hole throughout its length while a curved annular surface located radially inwardly of the gripping means between the gripping means and the cylindrical body bears radially outwardly and also downwardly on the collar to enhance dependable sealing between plug and container.
Inventors
- 👤 M Schuster
- 👤 F Lepenske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:36
CPC Classifications
B; B65; B65D; B65D39/00; B65D39/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
231 words
A sealing plug for insertion in a tap hole in a container defined by an internally smooth uniform diameter collar comprising: a. a hollow cylindrical body of resiliently yieldable elastomeric material having a uniform diameter portion as long as the overall length of the collar defining the tap hole, said uniform diameter portion fitting snugly within and sealingly contacting the entire inner surface of the collar, b. manual gripping means above the uniform diameter portion thereof comprising an annular flange extending radially outwardly beyond the cylindrical body and the tap hole in the collar, c. a cut back annular surface below the annular flange of greater diameter than the tap hole, d. a curved annular surface extending downwardly and inwardly from the cut back surface to the uniform portion of the cylindrical body to bear radially and downwardly on the collar upon seating of the plug for providing an additional sealing means, said curved and cut back surfaces spacing the annular flange from the collar, and e. means on the cylindrical body below the uniform diameter portion thereof cooperating with the inner end of the collar for preventing automatic ejection of the plug from the collar, f. at least an upper portion of the curved annular surface being spaced from the uppermost surface of the collar when the plug is seated therein to space the cut back portion from the collar.
Claim 2
Dependent Claim
231 words
A sealing plug for insertion in a tap hole in a container defined by an internally smooth uniform diameter collar comprising: a. a hollow cylindrical body of resiliently yieldable elastomeric material having a uniform diameter portion as long as the overall length of the collar defining the tap hole, said uniform diameter portion fitting snugly within and sealingly contacting the entire inner surface of the collar, b. manual gripping means above the uniform diameter portion thereof comprising an annular flange extending radially outwardly beyond the cylindrical body and the tap hole in the collar, c. a cut back annular surface below the annular flange of greater diameter than the tap hole, d. a curved annular surface extending downwardly and inwardly from the cut back surface to the uniform portion of the cylindrical body to bear radially and downwardly on the collar upon seating of the plug for providing an additional sealing means, said curved and cut back surfaces spacing the annular flange from the collar, and e. means on the cylindrical body below the uniform diameter portion thereof cooperating with the inner end of the collar for preventing automatic ejection of the plug from the collar, f. at least an upper portion of the curved annular surface being spaced from the uppermost surface of the collar when the plug is seated therein to space the cut back portion from the collar.
Claim 3
Dependent Claim
24 words
The sealing plug defined by claim 1, in which the curved annular surface bears radially and downwardly on the upper end of the collar.
Claim 4
Dependent Claim
57 words
The sealing plug defined by claim 1, in which the means on the cylindrical body below the uniform diameter portion thereof preventing automatic ejection of the plug comprises a downwardly and inwardly inclined surface having an upwardly facing tapered shoulder adjacent the uniform diameter portion of the body for bearing against the lower edge of the collar.
Claim 5
Dependent Claim
42 words
The sealing plug defined by claim 3, in which the means on the cylindrical body below the uniform diameter portion thereof preventing automatic ejection of the plug comprises a bottom wall which is puncturable by a tool insertable in the hollow body.
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) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |