Patent US3567542A successfully refreshed from Google Patents.
US3567542A
Expired / Lapsed
US
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Method of manufacturing fiber glass reinforced plastic tubing using sequentially inserted moving mandrels
Assignee: True Temper Corp
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Filing: 1967-07-25
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Granted: 1971-03-02
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Expires: 1987-07-25
Abstract
Abstract THERE IS DISCLOSED HEREIN A METHOD AND APPARATUS FOR CONTINUOUSLY PRODUCING FIBER GLASS REINFORCED ARTICLES BY CONTINUOUSLY PULLING A PLURALITY OF FIBER GLASS STRANDS ALONG A PRODUCTION LINE, SOME OF SAID STRANDS BEING PROVIDED WITH AN UNCURED RESIN, ARRANGING THE STRANDS INTO A TUBULAR SHAPE, SUCCESSIVELY INSERTING MANDRELS INTO THE TUBE THUS FORMED, CURING THE RESIN, CUTTING THE MANDRELS APART, AND REMOVING THE MANDRELS FROM THE HOLLOW ARTICLES FORMED THEREON.
Inventors
- 👤 Carl Thomas Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:14
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C53/00; B29C53/80; B29C53/82; B29C70/28; B29C70/40; B29C70/50; B29C70/52
Claims Analysis
Total Claims: 0
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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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |