US3259179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube cleaner
Assignee: Individual
•
Filing: 1964-04-06
•
Granted: 1966-07-05
•
Expires: 1984-04-06
Abstract
No abstract record available.
Inventors
- 👤 John M Leach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:54
CPC Classifications
F; F28; F28G; F28G1/00; F28G1/12; F28G1/125
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
95 words
AN APPARATUS FOR CLEANING TUBES COMPRISING A CLOSED COMPARTMENT, AT LEAST ONE TUBE HAV ING AN OPEN END EXTENDING INTO SAID COMPARTMENT AND HAVING AN ACCESS OPENING EXTENDING THROUGH ITS SIDE WALL NEAR SAID OPEN END AND WITHIN SAID COMPARTMENT, A PISTON SCRAPER POSITIONED IN SAID TUBE BETWEEN SAID ACCESS OPENING AND SAID OPEN END, MEANS TO DIRECT FLUID UNDER PRESSURE INTO SAID COMPARTMENT AND INTO AND THROUGH SAID ACCESS OPENING AND SAID TUBE, MEANS OPERATIVE TO MOVE SAID PISTON SCRAPER AWAY FROM SAID END OF THE TUBE AND TO THE OPPISTE SIDE OF SAID
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) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |