US3145173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuge having forced solids discharge
Assignee: Pennwalt Corp
•
Filing: 1962-11-26
•
Granted: 1964-08-18
•
Expires: 1982-11-26
Abstract
No abstract record available.
Inventors
- 👤 Thomas D Sharples
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:49
CPC Classifications
B; B04; B04B; B04B11/00; B04B11/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A CENTRIFUGE FOR CONCENTRATING SOLIDS INTO PASTY CONSISTENCY FROM A SUSPENSION, COMPRISING A HOLLOW IMPERFORATE-WALLED ROTOR HAVING A SOLIDS DISCHAGE PORT SPACED INWARD FROM THE IMPERFORATE WALL MENS TO DISCHARGE CLARIFIED LIQUID, A PAIR OF COEXTENSIVE RADIALLY SPACED SURFACES IN SAID ROTOR EXTENDING FROM A REGION IN THE ROTOR REMOTE FROM THE SOLIDS DISCHARGE PORT AND GENERALLY TOWARD THE SOLIDS DISCHARGE PORT, MEANS FOR ROTATING THE ROTOR, MEANS FOR DELIVERING THE SUSPENSION TO A ZONE IN THE ROTOR BETWEEN THE SURFACES FOR CENTRIFUGATION, MEANS TO MOVE ONE OF THE SURFACES IN A SUBSTANTILLY RADICAL DIRECTION TOWARD THE OTHER AND SUBSTANTIALLY INTO CONTACT THEREWITH IN A MOVEMENT WHICH PROGRESSES FROM SAID REGION AND TOWARD THE SOLIDS DISCHARGE PORT, WHEREBY CONCENTRATED PASTY SOLIDS BETWEEN THE SURFACES MAY BE EXTRUDED INWARD TO THE SOLIDS DISCHARGE PORT FOR DISCHARGE.
Claim 2
Dependent Claim
135 words
A CENTRIFUGE FOR CONCENTRATING SOLIDS INTO PASTY CONSISTENCY FROM A SUSPENSION, COMPRISING A HOLLOW IMPERFORATE-WALLED ROTOR HAVING A SOLIDS DISCHAGE PORT SPACED INWARD FROM THE IMPERFORATE WALL MENS TO DISCHARGE CLARIFIED LIQUID, A PAIR OF COEXTENSIVE RADIALLY SPACED SURFACES IN SAID ROTOR EXTENDING FROM A REGION IN THE ROTOR REMOTE FROM THE SOLIDS DISCHARGE PORT AND GENERALLY TOWARD THE SOLIDS DISCHARGE PORT, MEANS FOR ROTATING THE ROTOR, MEANS FOR DELIVERING THE SUSPENSION TO A ZONE IN THE ROTOR BETWEEN THE SURFACES FOR CENTRIFUGATION, MEANS TO MOVE ONE OF THE SURFACES IN A SUBSTANTILLY RADICAL DIRECTION TOWARD THE OTHER AND SUBSTANTIALLY INTO CONTACT THEREWITH IN A MOVEMENT WHICH PROGRESSES FROM SAID REGION AND TOWARD THE SOLIDS DISCHARGE PORT, WHEREBY CONCENTRATED PASTY SOLIDS BETWEEN THE SURFACES MAY BE EXTRUDED INWARD TO THE SOLIDS DISCHARGE PORT FOR DISCHARGE.
References Cited (Backward Citations)
US821875A
Cited
US802778A
Cited
US802780A
Cited
US1575116A
Cited
US1527075A
Cited
US1949278A
Cited
US2067590A
Cited
US2104162A
Cited
US2261394A
Cited
US2186836A
Cited
US2302168A
Cited
US2344888A
Cited
US2435941A
Cited
US2947472A
Cited
US2449634A
Cited
US2688437A
Cited
US2661150A
Cited
US2645916A
Cited
US2718353A
Cited
US2738227A
Cited
US2730299A
Cited
US2724508A
Cited
US2856124A
Cited
US2865541A
Cited
US3096283A
Cited
US3133881A
Cited
US3029837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |