US3137652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filters
Assignee: Individual
•
Filing: 1960-12-06
•
Granted: 1964-06-16
•
Expires: 1980-12-06
Abstract
No abstract record available.
Inventors
- 👤 William D Graue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:39
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/16; B01D33/00; B01D33/15; B01D33/21; B01D33/23; B01D33/44; B01D33/46; B01D33/463; B01D33/52; B01D33/54; B01D35/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A FILTER COMPRISING A TANK HAVING AN INLET FOR LIQUID CARYING MATERIAL IN SUSPENSION; A HOLLOW SHAFT WITHIN AND PROJECTING FROM SAID TANK TO CONSTITUTE AN EXHAUSE FOR FILTERED LIQUID; MEANS FOR ROTATING SAID HOLLOW SHAFT; A PLURALITY OF FILTER LEAF ELEMENTS EACH HAVING A NON-POROUS SIDE AND A POROUS FILTER SIDE CLAMPED THROUGHOUT ITS PERIPHERY TO THE NON-POROUS SIDE AND DEFINING THEREWITH A FLOW CHANNEL FOR FILTERED LIQUID, SAID FILTER LEAF ELEMENTS BEING ATTACHED TO THE SHAFT AT AN INCLINED ANGLE TO THE LONGITUDINAL AXIS OF THE SHAFT WHEREBY IN ONE ROTARY POSITION OF THE SHAFT ALL OF THE PROUS FILTER SURFACES FACE UPWARD; DRAINAGE FITTINGS CONNECTED BETWEEN THE HOLLOW SHAFT AND THE FILTER LEAF ELEMENTS FOR CHANNELING FILTERED LIQUID FROM THE LEAF ELEMENTS INTO THE HOLLOW SHAFT; AND MEANS FOR RELEASBLY HOLDING THE ROTARY SHAFT IN SAID ONE ROTARY POSITION WHERE ALL POROUS FILTER SURFACES FACE UPWARDLY WHEREBY DEPOSITS ON THE POROUS FILTER SURFACES WILL NOT FALL THEREFROM INTO THE LIQUID IN THE TANK.
Claim 2
Dependent Claim
166 words
A FILTER COMPRISING A TANK HAVING AN INLET FOR LIQUID CARYING MATERIAL IN SUSPENSION; A HOLLOW SHAFT WITHIN AND PROJECTING FROM SAID TANK TO CONSTITUTE AN EXHAUSE FOR FILTERED LIQUID; MEANS FOR ROTATING SAID HOLLOW SHAFT; A PLURALITY OF FILTER LEAF ELEMENTS EACH HAVING A NON-POROUS SIDE AND A POROUS FILTER SIDE CLAMPED THROUGHOUT ITS PERIPHERY TO THE NON-POROUS SIDE AND DEFINING THEREWITH A FLOW CHANNEL FOR FILTERED LIQUID, SAID FILTER LEAF ELEMENTS BEING ATTACHED TO THE SHAFT AT AN INCLINED ANGLE TO THE LONGITUDINAL AXIS OF THE SHAFT WHEREBY IN ONE ROTARY POSITION OF THE SHAFT ALL OF THE PROUS FILTER SURFACES FACE UPWARD; DRAINAGE FITTINGS CONNECTED BETWEEN THE HOLLOW SHAFT AND THE FILTER LEAF ELEMENTS FOR CHANNELING FILTERED LIQUID FROM THE LEAF ELEMENTS INTO THE HOLLOW SHAFT; AND MEANS FOR RELEASBLY HOLDING THE ROTARY SHAFT IN SAID ONE ROTARY POSITION WHERE ALL POROUS FILTER SURFACES FACE UPWARDLY WHEREBY DEPOSITS ON THE POROUS FILTER SURFACES WILL NOT FALL THEREFROM INTO THE LIQUID IN THE TANK.
References Cited (Backward Citations)
DE68289C
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US985611A
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US1502700A
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US2000137A
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US2480320A
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US2799397A
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US2780364A
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US2874848A
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GB836266A
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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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |