US3716435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a container body
Assignee: Primerica Inc
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Filing: 1970-11-16
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Granted: 1973-02-13
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Expires: 1990-11-16
Abstract
Abstract A tubular, spirally wound multi-ply container body includes a body ply of fiber stock which has a liquidproof barrier layer prelaminated or otherwise preaffixed to one surface thereof. Material on the reverse side of both marginal edge portions of the resultant laminated ply is removed by a skiving operation, thereby reducing the thickness of the marginal edge portions. One of the thinned, skived, marginal edge portions is folded back on itself, and this folded edge portion is then helically wound in lapping relationship to the unfolded edge portion and bonded to it to form a sealed helical lap seam having a thickness substantially equal to that of the unskived portions of the ply.
Inventors
- 👤 S Jensen
- 👤 W Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:46
CPC Classifications
B; B31; B31F; B31F7/00; B31F7/006; B29; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/78; B29C65/00; B29C65/02; B29C65/022; B29C65/48; B29C66/00; B29C66/01; B29C66/02; B29C66/022; B29C66/0224; B29C66/02241; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/13; B29C66/135; B29C66/14; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/432; B29C66/4322; B29C66/4329; B29C66/49; B29C66/70; B29C66/72; B29C66/723; B29C66/7234; B29C66/80; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83413; B29C66/83431; B29C66/83433; B31C; B31C3/00; B31F1/00; B31F1/0003; B31F1/0006; B31F1/0009; B31F1/0019; B31F1/0029; B29C53/60; B29C53/607; B29C65/4805; B29C65/481; B29C65/4815; B29C65/482; B29C66/7232; B29C66/72321; B29C66/72327; B29C66/72328; B29K; B29K2711/00; B29K2711/12; B29K2711/123; B29L; B29L2009/00
Claims Analysis
Total Claims: 0
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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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |