US3310171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for pressurefiltering
Assignee: Industrial Filter and Pump Manufacturing Co
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Filing: 1964-06-18
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Granted: 1967-03-21
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Expires: 1984-06-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Henry Schmidt
- 👤 James F Zievers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:34
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/62; B01D29/70; B01D29/72; B01D29/39; B01D29/66; B01D37/00; B01D37/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A METHOD OF REMOVING FILTER CAKE FROM PRESSUREFILTER LEAVES COMPRISING THE STEPS OF PROVIDING A PLURALITY OF JETS OF WASH LIQUID, IMPINGING THE JETS ON THE CAKE ON SAID LEAVES WHILE SWEEPING THE JETS ACROSS THE ENTIRE SURFACE OF THE CAKE, AND CONTROLLING THE QUANTITY OF THE WASH LIQUID AT DIFFERENT POINTS OF SWEEP OF THE JETS TO PROVIDE DIFFERENT AMOUNTS OF ENERGY TO DIFFERENT PORTIONS OF THE CAKE.
Claim 2
Dependent Claim
57 words
IN A PRESSURE-FILTER HAVING A PLURALITY OF FILTER LEAVES, AN EFFLUENT HEADER, MEANS FOR RECEIVING SAID FILTER LEAVES IN EFFLUENT COMMUNICATION RELATIONSHIP WITH SAID HEADER, PIVOTABLE MOVABLE MEANS FOR SIMULTANEOUSLY SECURING SAID LEAVES TO SAID RECEIVING MEANS WHEN MOVED TO ONE POSITION, AND MEANS FOR REMOVING SAID LEAVES WHEN SAID MOVABLE MEANS IS MOVED TO ANOTHER POSITION.
References Cited (Backward Citations)
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US2874848A
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US2868379A
Cited
US2936075A
Cited
US3240338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |