Patent US3339897A successfully refreshed from Google Patents.
US3339897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous mixing device for drilling fluids
Assignee: Individual
•
Filing: 1965-05-28
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Granted: 1967-09-05
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Expires: 1985-05-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Philip E Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:52
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/06; E21B21/062; B; B01; B01F; B01F35/00; B01F35/71; B01F35/717; B01F35/71775; B01F35/75; B01F35/754; B01F35/7547; B01F35/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
AN AGITATOR FOR AGITATING DRILLING FLUIDS IN A CONTAINER COMPRISING: (A) A DRIVE SHAFT EXTENDING DOWARDLY INTO THE CONTAINER; (B) BEARING SUPPORT MEANS ADJACENT THE UPPER END OF SAID SHAFT FOR SUPPORTING SAID SHAFT FOR ROTATION WITHIN SAID CONTAINER; (C) SPEED REDUCING MEANS MOUNTED ON THE UPPER END OF SAID DRIVE SHAFT; (D) MEANS CONNECTED THEREWITH FOR IMPARTING ROTATION TO SAID SPEED REDUCING MEANS AND DRIVE SHAFT; (E) MEANS MOUNTED ON THE LOWER END OF SAID SHAFT FOR IMMERSION IN THE FLUID IN THE CONTAINER AND AGITATING IT WHEN SAID SHAFT IS ROTATED; (F) SAID LAST NAMED MEANS INCLUDING: (1) A HUB MOUNTED ON THE LOWER END OF SAID SHAFT; (2) SAID HUB HAVING A PLURALITY OF FLAT SURFACES ON THE OUTER EDGE THEREOF.
Claim 2
Dependent Claim
124 words
AN AGITATOR FOR AGITATING DRILLING FLUIDS IN A CONTAINER COMPRISING: (A) A DRIVE SHAFT EXTENDING DOWARDLY INTO THE CONTAINER; (B) BEARING SUPPORT MEANS ADJACENT THE UPPER END OF SAID SHAFT FOR SUPPORTING SAID SHAFT FOR ROTATION WITHIN SAID CONTAINER; (C) SPEED REDUCING MEANS MOUNTED ON THE UPPER END OF SAID DRIVE SHAFT; (D) MEANS CONNECTED THEREWITH FOR IMPARTING ROTATION TO SAID SPEED REDUCING MEANS AND DRIVE SHAFT; (E) MEANS MOUNTED ON THE LOWER END OF SAID SHAFT FOR IMMERSION IN THE FLUID IN THE CONTAINER AND AGITATING IT WHEN SAID SHAFT IS ROTATED; (F) SAID LAST NAMED MEANS INCLUDING: (1) A HUB MOUNTED ON THE LOWER END OF SAID SHAFT; (2) SAID HUB HAVING A PLURALITY OF FLAT SURFACES ON THE OUTER EDGE THEREOF.
References Cited (Backward Citations)
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Cited
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Cited
US2418547A
Cited
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Cited
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Cited
US2655436A
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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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |