US3121679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of operating screens
Assignee: Novo Industrial Corp
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Filing: 1958-05-27
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Granted: 1964-02-18
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Expires: 1978-05-27
Abstract
No abstract record available.
Inventors
- 👤 Charles F Newburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:27
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46; B07B1/4609; B07B1/4618; B07B1/28; B07B1/34; B07B1/346; B07B1/4672
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
76 words
A METHOD OF DETERMINING THE ANGULAR POSITION OF A VIBRATORY SCREENING DEVICE TO SEPARATE A PARTICULAR FINELY DIVIDED MATERIAL ACCORDING TO A PREDETERMINED DESIRED SEPARATION OF PARTICLE SIZE, THE SCREENING DEVICE HAVING A SCREEN DECK, INCLUDING THE STEPS OF DETERMINING THE ANGLE OF REPOSE OF THE PARTICULAR MATERIAL BY POURING THE MATERIAL FREELY INTO A PILE ON A GENERALLY FLAT SURFACE, AND POSITIONING THE SCREEN DECK APPROZIMATELY AT THE ANGLE OF REPOSE RELATIVE TO THE HORIZONTAL.
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) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |