Patent US3271081A successfully refreshed from Google Patents.
US3271081A
Expired / Lapsed
US
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Apparatus and process for pumping slurry
Assignee: Phillips Petroleum Co
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Filing: 1964-09-28
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Granted: 1966-09-06
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Expires: 1984-09-28
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Huddleston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:31
CPC Classifications
F; F04; F04C; F04C13/00; F04C13/001; F04C13/002; B; B01; B01D; B01D9/00; B01D9/0004; B01D9/0013; B01D9/004; B01D9/005; B01D9/0059; B01D9/0063; F04C2/00; F04C2/08; F04C2/10; F04C2/107; F04C2/1071; F04C2/1073
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A PROGRESSING CAVITY PUMP HAVING A FEED HOPPER AND A PROGRESSING CAVITY STATOR, AN INLET TO THE FEED HOPPER, AN OUTLET TO THE STATOR, AND A STATOR INLET SPACE BETWEEN THE HOPPER AND THE STATOR, A PROGRESSING CAVITY ROTOR MOUNTED IN THE STATOR, A DRIVE SHAFT WITH PITCHED PADDLE FEEDING MEANS THEREON MOUNTED ON THE HOPPER AND CONNECTED TO THE ROTOR, AND AN AGITATING BAR MOUNTED ON THE NEAREST PADDLE OF SAID FEEDING MEANS AND EXTENDING INTO SAID STATOR SPACE TO A POINT ADJACENT SAID ROTOR TO PREVENT THE CRYSTALS IN SAID SLURRY BRIDGING IN SAID STATOR INLET SPACE.
Claim 2
Dependent Claim
99 words
A PROGRESSING CAVITY PUMP HAVING A FEED HOPPER AND A PROGRESSING CAVITY STATOR, AN INLET TO THE FEED HOPPER, AN OUTLET TO THE STATOR, AND A STATOR INLET SPACE BETWEEN THE HOPPER AND THE STATOR, A PROGRESSING CAVITY ROTOR MOUNTED IN THE STATOR, A DRIVE SHAFT WITH PITCHED PADDLE FEEDING MEANS THEREON MOUNTED ON THE HOPPER AND CONNECTED TO THE ROTOR, AND AN AGITATING BAR MOUNTED ON THE NEAREST PADDLE OF SAID FEEDING MEANS AND EXTENDING INTO SAID STATOR SPACE TO A POINT ADJACENT SAID ROTOR TO PREVENT THE CRYSTALS IN SAID SLURRY BRIDGING IN SAID STATOR INLET SPACE.
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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |