Patent US3268933A successfully refreshed from Google Patents.
US3268933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank cleaning apparatus
Assignee: Richfield Oil Corp
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Filing: 1965-01-04
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Granted: 1966-08-30
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Expires: 1985-01-04
Abstract
No abstract record available.
Inventors
- 👤 James C Marantette
- 👤 Jr Harrie E Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:35
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/08; B08B9/093; B05; B05B; B05B1/00; B05B1/14; B05B1/1421; B05B1/1422
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
AN APPARATUS FOR REMOVING EXTRANEOUS LIQUID AND SEDIMENT FROM THE BOTTOM OF A LIQUID-FILLED TANK COMPRISING A LENGTH OF FLEXIBLE HOSE HAVING ONE END ADAPTED TO BE CONNECTED TO A SOURCE OF SECTION, AN ELONGATED SPRING METAL STRIP IN SAID HOSE TO PERMIT THE HOSE TO BEND IN ONLY ONE DIRECTION, A PROBE HEAD ON THE OTHER END OF SAID FLEXIBLE HOSE AND FIXED TO AN END OF SAID STRAP, SAID PROBE HEAD HAVING A FLUID PASSAGE THEREIN IN FLUID COMMUNICATION WITH SAID OTHER END OF SAID FLEXIBLE HOSE, AND ELONGATED FLEXIBLE TUBULAR MEANS CONNECTED TO SAID HEAD FOR FLUID FLOW COMMUNICATION WITH SAID HOSE AND HAVING AN OPENING THEREIN FOR DRAWING SAID EXTRANEOUS WATER AND SEDIMENT THERETHROUGH.
Claim 2
Independent Claim
118 words
AN APPARATUS FOR REMOVING EXTRANEOUS LIQUID AND SEDIMENT FROM THE BOTTOM OF A LIQUID-FILLED TANK COMPRISING A LENGTH OF FLEXIBLE HOSE HAVING ONE END ADAPTED TO BE CONNECTED TO A SOURCE OF SECTION, AN ELONGATED SPRING METAL STRIP IN SAID HOSE TO PERMIT THE HOSE TO BEND IN ONLY ONE DIRECTION, A PROBE HEAD ON THE OTHER END OF SAID FLEXIBLE HOSE AND FIXED TO AN END OF SAID STRAP, SAID PROBE HEAD HAVING A FLUID PASSAGE THEREIN IN FLUID COMMUNICATION WITH SAID OTHER END OF SAID FLEXIBLE HOSE, AND ELONGATED FLEXIBLE TUBULAR MEANS CONNECTED TO SAID HEAD FOR FLUID FLOW COMMUNICATION WITH SAID HOSE AND HAVING AN OPENING THEREIN FOR DRAWING SAID EXTRANEOUS WATER AND SEDIMENT THERETHROUGH.
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |