US3313577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for transporting slurries
Assignee: Individual
•
Filing: 1965-03-15
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Granted: 1967-04-11
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Expires: 1985-03-15
Abstract
No abstract record available.
Inventors
- 👤 Wolfe Samuel Edmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:05
CPC Classifications
F; F15; F15D; F15D1/00; F15D1/02; F15D1/06; F15D1/065; B; B65; B65G; B65G53/00; B65G53/34; B65G53/52; B65G53/521
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
AN IMPROVED PIPE FOR TRANSPORTING LIQUID-SOLID SLURRIES IN A PIPELINE WHICH COMPRISES AT LEAST ONE CIRCUMFERENTIALLY COMPLETE HELICAL RIB FORMED IN SAID PIPE AT LEAST ABOUT EVERY 6 INCHES ALONG THE LENGTH OF THE PIPE PROJECTING INWARDLY FROM THE INNER PIPE WALL AT LEAST ONEQUARTER INCH FOR PIPE UP TO ABOUT SIX INCHES IN DIAMETER AND AT LEAST THREE-EIGHTS INCH FOR PIPE LARGER THAN ABOUT SIX INCHES IN DIAMETER, SAID RIB DEFINING AN ANGLE OF ABOUT 35* TO ABOUT 50* RELATIVE TO THE AXIS OF THE PIPE.
Claim 2
Dependent Claim
87 words
AN IMPROVED PIPE FOR TRANSPORTING LIQUID-SOLID SLURRIES IN A PIPELINE WHICH COMPRISES AT LEAST ONE CIRCUMFERENTIALLY COMPLETE HELICAL RIB FORMED IN SAID PIPE AT LEAST ABOUT EVERY 6 INCHES ALONG THE LENGTH OF THE PIPE PROJECTING INWARDLY FROM THE INNER PIPE WALL AT LEAST ONEQUARTER INCH FOR PIPE UP TO ABOUT SIX INCHES IN DIAMETER AND AT LEAST THREE-EIGHTS INCH FOR PIPE LARGER THAN ABOUT SIX INCHES IN DIAMETER, SAID RIB DEFINING AN ANGLE OF ABOUT 35* TO ABOUT 50* RELATIVE TO THE AXIS OF THE PIPE.
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) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |