US2859151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the centrifugal casting of fiber-reinforced plastic pipe
Assignee: Reflin Co
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Filing: 1953-09-03
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Granted: 1958-11-04
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Expires: 1973-09-03
Abstract
No abstract record available.
Inventors
- 👤 Ernest M Usab
- 👤 Martin A Usab
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:31
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/30; B29C70/32; B29C70/323; B29C70/326; B29C35/00; B29C35/02; B29C35/04; B29C41/00; B29C41/34; B29C41/46; B29C63/00; B29C63/26; B29C63/30; B29C35/045
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
124 words
APPARATUS FOR CASTING REINFORCED PLASTIC PIPE INCLUDING: AN ELONGATED CASTING CYLINDER; MEANS MOUNTING SAID CYLINDER FOR HIGH SPEED ROTATION ABOUT ITS LONGITUDINAL AXIS; MEANS FOR ROTATING SAID CYLINDER AT HIGH SPEED; A MANDREL FOR WRAPPING THEREON REINFORCED FABRIC AND INSERTABLE AS A UNTI INTO SAID CASTING CYLINDER FOR APPLICATION OF THE WRAPPED FABRIC ON THE INNER WALL OF SAID CYLINDER BY REVERSE ROTATION, SAID MANDREL HAVING A SLOT FOR RECEIVING AND RELEASING AN EDGE OF SUCH FABRIC; MEANS FOR INTRODUCING THERMOSETTING LIQUID RESIN INTO THE INTERIOR OF SAID CYLINDER FOR DISTRIBUTION UPON SAID FABRIC AND SAID INNER WALL TO YIELD A TUBULAR FORM; AND MEANS FOR HEATING SAID CYLINDER AND RESIN TO SET SAID RESIN WHILE ROTATING THE CYLINDER AND THE TUBULAR RESIN SHAPE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |