Patent US4014723A successfully refreshed from Google Patents.
US4014723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite containers
Assignee: Crown Packaging UK Ltd
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Filing: 1972-03-30
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Granted: 1977-03-29
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Expires: 1992-03-30
Abstract
Abstract A container which comprises a tubular body made of paperboard or of a laminate including paper has its ends closed by closure members made of a different material such as tinplate or a plastics material. Each closure member includes a plug portion which closely engages an end part of the body and a rim which extends laterally from the plug portion and is disposed to be closely adjacent to the end face of the body. At at least one end of the body the closure member therefor is at least in part secured to the body by a continuous band of thermoplastics material which extends lengthwise of the plug portion and forms at the inner end of the plug portion a bead arranged to caulk the leak path between the body and the plug portion to the rim.
Inventors
- 👤 Ulpian Robin Edward Frost Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:45
CPC Classifications
B; B65; B65D; B65D15/00; B65D15/02; B65D15/04; B65D15/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
195 words
The method of making a container of the type including an open ended tubular body and a closure member having a plug portion receivable in one end of said body, said method including the steps of applying a thick continuous band of softened thermoplastics material to the interior of the body at a position spaced from an adjacent end face of the body, smearing the thermoplastics material along the interior of the body by pressing the plug portion of the closure member axially of the body into closing relation with the body and with concomitant formation at the inner end of the plug portion of a bead of the thermoplastics material to caulk the leak path between the body and the plug portion to the rim adjacent to the end face of the body, and cooling the thermoplastics material to create a bond between the plug portion and the body, the thermoplastics material being applied to the body in a molten state immediately prior to the application of the end closure member to the body with the thermoplastics material being applied in the form of a jet during relative rotation between the jet and body.
Claim 2
Independent Claim
195 words
The method of making a container of the type including an open ended tubular body and a closure member having a plug portion receivable in one end of said body, said method including the steps of applying a thick continuous band of softened thermoplastics material to the interior of the body at a position spaced from an adjacent end face of the body, smearing the thermoplastics material along the interior of the body by pressing the plug portion of the closure member axially of the body into closing relation with the body and with concomitant formation at the inner end of the plug portion of a bead of the thermoplastics material to caulk the leak path between the body and the plug portion to the rim adjacent to the end face of the body, and cooling the thermoplastics material to create a bond between the plug portion and the body, the thermoplastics material being applied to the body in a molten state immediately prior to the application of the end closure member to the body with the thermoplastics material being applied in the form of a jet during relative rotation between the jet and body.
Claim 3
Dependent Claim
37 words
The method according to claim 1 in which a continuous band of softened thermoplastics material is applied to the interior of the opposite end of the body and is solidified for storage and transport of the container.
Claim 4
Dependent Claim
79 words
The method according to claim 2 including the steps of filling the container, softening the solidified thermoplastics material, and pressing the plug portion of an end closure member axially of the body against the softened thermoplastics material thereby to smear the thermoplastics material along the body and to form a bead of the thermoplastics material at the inner end of the plug portion, and cooling the thermoplastics material to create a bond between the plug portion and the 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) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |