US3532580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for continuously manufacturing synthetic resin pipe
Assignee: Individual
•
Filing: 1966-10-28
•
Granted: 1970-10-06
•
Expires: 1986-10-28
Abstract
No abstract record available.
Inventors
- 👤 Shiro Kanao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:42
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/80; B29C53/82; B29C53/821; B29C53/825; B29C53/827
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
APPARATUS FOR CONTINUOUSLY MANUFACTURING SYNTHETIC RESSIN PIPE, COMPRISING; A SUPPORTING FRAME; AT LEAST ONE ANNULAR ARRAY OF CIRCUMFERENTIALLY SPACED INNER ROLLERS CARRIED BY SAID FRAME AND BEING ARRANGED TO INSCRIBE AN IMAGINERY CYLINDRICAL SURFACE, EACH OF SAID INNER ROLLERS BEING MOUNTED FOR ROTATION ABOUT AN AXIS DISPOSED SLIGHTLY OBLIQUE TO THE ONGITUDINAL AXIS OF SAID IMAGINERY CYLINDRICAL SURFACE IN THE PERIPHERAL DIRECTION THEREOF, WITH UNIFORM DEVIATION FROM SAID LONGITUDINAL AXIS FOR EVERY ONE OF SAID INNER ROLLERS; AN OUTER ROLLER ROTATABLY MOUNTED RADIALLY OUTWARDLY OF AT LEAST ONE OF THE INNER ROLLERS OF SAID ANNULAR ARRAY IN OPPOSING RELATION THERETO, THE AXIS OF SAID OUTER ROLLER EXTENDING SUBSTANTIALLY PARALLEL TO THE AXIS OF ROTATION OF SAID OPPOSING INNER ROLLER;
Claim 2
Dependent Claim
119 words
APPARATUS FOR CONTINUOUSLY MANUFACTURING SYNTHETIC RESSIN PIPE, COMPRISING; A SUPPORTING FRAME; AT LEAST ONE ANNULAR ARRAY OF CIRCUMFERENTIALLY SPACED INNER ROLLERS CARRIED BY SAID FRAME AND BEING ARRANGED TO INSCRIBE AN IMAGINERY CYLINDRICAL SURFACE, EACH OF SAID INNER ROLLERS BEING MOUNTED FOR ROTATION ABOUT AN AXIS DISPOSED SLIGHTLY OBLIQUE TO THE ONGITUDINAL AXIS OF SAID IMAGINERY CYLINDRICAL SURFACE IN THE PERIPHERAL DIRECTION THEREOF, WITH UNIFORM DEVIATION FROM SAID LONGITUDINAL AXIS FOR EVERY ONE OF SAID INNER ROLLERS; AN OUTER ROLLER ROTATABLY MOUNTED RADIALLY OUTWARDLY OF AT LEAST ONE OF THE INNER ROLLERS OF SAID ANNULAR ARRAY IN OPPOSING RELATION THERETO, THE AXIS OF SAID OUTER ROLLER EXTENDING SUBSTANTIALLY PARALLEL TO THE AXIS OF ROTATION OF SAID OPPOSING INNER ROLLER;
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) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |