US2874078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe cleaning method
Assignee: Individual
•
Filing: 1954-04-14
•
Granted: 1959-02-17
•
Expires: 1974-04-14
Abstract
No abstract record available.
Inventors
- 👤 Alberto G Reinhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:01
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/053; B08B9/055
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
THE METHOD OF MECHANICALLY CLEANING A PIPE WITH A SCRAPING DEVICE WHICH COMPRISES THE STEPS OF OPENING ONE END OF THE PIPE TO BE CLEANED, INSERTING SAID SCRAPING DEVICE FREELY FLOATING INTO SAID PIPE OPENING, FORCING A LIQUID INTO THE SAME END OF SAID PIPE, APPLYING PUMPING PRESSURE AT BOTH ENDS OF THE PIPE TO DRIVE SAID SCRAPING DEVICE THROUGH SAID PIPE WHILE PERMITTING SAID LIQUID TO FLOW PAST SAID SCRAPING DEVICE AT A PREDETERMINED RATE, SO AS TO CAUSE SAID LIQUID TO MOVE AT A FASTER RATE THAN SAID DEVICE THROUGH SAID PIPE, AND CONTROLING THE RATE OF MOVEMENT OF THE DEVICE THEREIN BY CONTROLLING THE PUMPING RATE AT LEAST AT ONE END OF THE PIPE.
Claim 2
Independent Claim
117 words
THE METHOD OF MECHANICALLY CLEANING A PIPE WITH A SCRAPING DEVICE WHICH COMPRISES THE STEPS OF OPENING ONE END OF THE PIPE TO BE CLEANED, INSERTING SAID SCRAPING DEVICE FREELY FLOATING INTO SAID PIPE OPENING, FORCING A LIQUID INTO THE SAME END OF SAID PIPE, APPLYING PUMPING PRESSURE AT BOTH ENDS OF THE PIPE TO DRIVE SAID SCRAPING DEVICE THROUGH SAID PIPE WHILE PERMITTING SAID LIQUID TO FLOW PAST SAID SCRAPING DEVICE AT A PREDETERMINED RATE, SO AS TO CAUSE SAID LIQUID TO MOVE AT A FASTER RATE THAN SAID DEVICE THROUGH SAID PIPE, AND CONTROLING THE RATE OF MOVEMENT OF THE DEVICE THEREIN BY CONTROLLING THE PUMPING RATE AT LEAST AT ONE END OF THE PIPE.
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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) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |