US3138088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for dewatering slurries
Assignee: International Vibro Inc
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Filing: 1961-05-12
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Granted: 1964-06-23
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Expires: 1981-05-12
Abstract
No abstract record available.
Inventors
- 👤 Herbert S Foth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:07
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/01; B01D33/03; B01D33/04; B01D33/44; B01D33/46; B01D33/466; B01D33/58; B01D33/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
THE METHOD OF DEWATERING A SLURRY HAVING SOLID PARTICLES VARYING IN SIZE WITHIN A GIVEN SIZE RANGE COMPRISING THE STEPS OF FEEDING SAID SLURRY ONTO A FILTER SCREEN ADAPTED TO PASS PARTICLES OF SIZES WITHIN THE LOWER PORTION OF SAID GIVEN SIZE RANGE AND TO RETAIN PARTICLES OF SIZES WITHIN THE UPPER PORTION OF SAID GIVEN SIZE RANGE, COMPRESSING SAID SLURRY AGAINST SAID FILTER SCREEN TO EXPRESS A FIRST FILTRATE AND TO FORM A CAKE OF APRTICLES UPON SAID FILTER SCREEN, FLOWING SAID FIRST FILTRATE ONTO SAID CAKE, AND SUBSEQUENTLY COMPRESSING SAID FILTRATE AND SAID CAKE AGAINST SAID SCREEN TO EXPRESS A SECOND FILTRATE.
Claim 2
Independent Claim
104 words
THE METHOD OF DEWATERING A SLURRY HAVING SOLID PARTICLES VARYING IN SIZE WITHIN A GIVEN SIZE RANGE COMPRISING THE STEPS OF FEEDING SAID SLURRY ONTO A FILTER SCREEN ADAPTED TO PASS PARTICLES OF SIZES WITHIN THE LOWER PORTION OF SAID GIVEN SIZE RANGE AND TO RETAIN PARTICLES OF SIZES WITHIN THE UPPER PORTION OF SAID GIVEN SIZE RANGE, COMPRESSING SAID SLURRY AGAINST SAID FILTER SCREEN TO EXPRESS A FIRST FILTRATE AND TO FORM A CAKE OF APRTICLES UPON SAID FILTER SCREEN, FLOWING SAID FIRST FILTRATE ONTO SAID CAKE, AND SUBSEQUENTLY COMPRESSING SAID FILTRATE AND SAID CAKE AGAINST SAID SCREEN TO EXPRESS A SECOND FILTRATE.
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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |