Patent US3615965A successfully refreshed from Google Patents.
US3615965A
Expired / Lapsed
US
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Method of making a container closure
Assignee: Rieke LLC
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Filing: 1969-01-23
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Granted: 1971-10-26
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Expires: 1989-01-23
Abstract
Abstract A flexible retractable and extensible closure of plastic is secured to a corrugated fiberboard container coated with plastic or a material fusible to the closure, by providing upper, lower, or both upper and lower flanges on a portion of the spout member, the flanges being fused to facing surfaces of the container top around an opening in the top, by spin welding, or other heating means to provide single or double liquid and vaportight seals around the opening.
Inventors
- 👤 Rulo Wayne Smith
- 👤 Kenneth Lyle Summers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:27
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/04; B65D47/06; B65D47/061; B65D47/063; B29; B29C; B29C65/00; B29C65/02; B29C65/78; B29C65/7841; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/12; B29C66/122; B29C66/1222; B29C66/1224; B29C66/13; B29C66/131; B29C66/135; B29C66/50; B29C66/51; B29C66/53; B29C66/532; B29C66/5324; B29C66/53245; B29C66/53246; B29C66/53247; B29C66/534; B29C66/5344; B29C66/61; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B29C65/04; B29C65/06; B29C65/0672; B29C65/08; B29C66/70; B29C66/71; B29L; B29L2031/00; B29L2031/56; B29L2031/565
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
31 words
The method of claim 1 wherein: said closure is a flexible retractable and extensible spout unit made of thermoplastic material, and said closure is gripped and spun to generate said heating.
Claim 2
Dependent Claim
47 words
The method of claim 1 wherein: heat is generated in both of said flanges around the entire perimeter of said opening to provide a liquid and vaportight seal between each of said flanges and the respective container surface faced thereby, around the entire perimeter of said opening.
Claim 3
Dependent Claim
18 words
The method of claim 1 wherein: a nested spout portion of said closure is gripped for spinning thereof.
Claim 4
Dependent Claim
58 words
The method of claim 1 and further comprising the step of: keeping said outwardly extending flange engaged with the topside of the top of said container while heating until engaging surfaces become fusible; and terminating the heating and maintaining the engagement of said outwardly extending flange with the topside of said top until the engaging surfaces become fused.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |