Patent US2974071A successfully refreshed from Google Patents.
US2974071A
Expired / Lapsed
US
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Line cleaning process
Assignee: Individual
•
Filing: 1953-12-21
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Granted: 1961-03-07
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Expires: 1973-12-21
Abstract
No abstract record available.
Inventors
- 👤 Frank E Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:32
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/032; B08B9/0321; B08B9/0325; F; F16; F16L; F16L2101/00; F16L2101/10; F16L2101/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS FOR CLEANING THE INTERIOR OF A PLUGGED INACCESSIBLE LINE HAVING AN ACCESSIBLE END CONSISTING OF DRAWING HOT OIL FROM AN EXTERIOR SOURCE, FORCING SAID HOT OIL INTO THE ACCESSIBLE END OF SAID LINE AND AGAINST THE PLUG THEREIN AT A CONTROLLED AND PREDETERMINED PRESSURE UNTIL SAID PLUG HAS BEEN DISSOLVED, WITHDRAWING SAID HOT OIL AND DISSOLVED PLUG THROUGH SAID ACCESSIBLE END AT A CONTROLLED AND PREDETERMINED SUCTION AND REDEPOSITING SAID HOT OIL AND DISSOLVED PLUG IN SAID EXTERIOR SOURCE.
Claim 2
Dependent Claim
81 words
A PROCESS FOR CLEANING THE INTERIOR OF A PLUGGED INACCESSIBLE LINE HAVING AN ACCESSIBLE END CONSISTING OF DRAWING HOT OIL FROM AN EXTERIOR SOURCE, FORCING SAID HOT OIL INTO THE ACCESSIBLE END OF SAID LINE AND AGAINST THE PLUG THEREIN AT A CONTROLLED AND PREDETERMINED PRESSURE UNTIL SAID PLUG HAS BEEN DISSOLVED, WITHDRAWING SAID HOT OIL AND DISSOLVED PLUG THROUGH SAID ACCESSIBLE END AT A CONTROLLED AND PREDETERMINED SUCTION AND REDEPOSITING SAID HOT OIL AND DISSOLVED PLUG IN SAID EXTERIOR SOURCE.
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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) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |