Patent US2859151A successfully refreshed from Google Patents.
US2859151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the centrifugal casting of fiber-reinforced plastic pipe
Assignee: Reflin Co
•
Filing: 1953-09-03
•
Granted: 1958-11-04
•
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 20:38
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.
References Cited (Backward Citations)
US1318520A
Cited
US753959A
Cited
US1577531A
Cited
US1668763A
Cited
US1776547A
Cited
US1840027A
Cited
US1995977A
Cited
US2085959A
Cited
US2278858A
Cited
US2386034A
Cited
US2614058A
Cited
US2633605A
Cited
US2701403A
Cited
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 |