US2906650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cleaning pipe lines
Assignee: Roll Dippers Inc
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Filing: 1956-10-31
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Granted: 1959-09-29
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Expires: 1976-10-31
Abstract
No abstract record available.
Inventors
- 👤 Estel O Wheaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:25
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/053; B08B9/055; B08B9/0553; A; A01; A01J; A01J7/00; A01J7/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
THE METHOD OF CLEANING A PIPE LINE OF A GIVEN ESSENTIALLY UNIFORM CROSS SECTION COMPRISING THE STEPS OF DEVELOPING A PRESSURE GRADIENT IN THE PIPE LINE AND INTRODUCING INTO THE HIGH PRESSURE END OF THE PIPE LINE, A CYLINDRICAL BODY OF POROUS RESILIENT MATERIAL GENERALLY CONFORMING TO THE GIVEN CROSS SECTION HAVING A LENGHT IN EXCESS OF ANY DIMENSION ACROSS ITS CROSS SECTION AND HAVING A PLANT TRANSVERSE RELATIVELY NON-POROUS MEMBRANE EXTENDING ACROSS THE LEADING FACE OF SAID CYLINDER WITHIN SAID PIPE LINE TO FORM A BARRIER TO THE FLOW OF FLUID AXIALLY THROUGH SAID CYLINDER.
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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) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |