US3326475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reject spouts
Assignee: Microcyclomat Co
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Filing: 1964-06-01
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Granted: 1967-06-20
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Expires: 1984-06-01
Abstract
No abstract record available.
Inventors
- 👤 William H Lykken
- 👤 Henry L Freysinger
- 👤 James W Bercaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:16
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/02; B; B02; B02C; B02C13/00; B02C13/14; B02C13/18; B07; B07B; B07B7/00; B07B7/08; C22B1/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
EXTRACTION APPARATUS FOR THE REMOVAL OF COARSER AND DENSER IMPURITIES AND CONTAMINANTS FROM NON-METALLIC SOLID MATERIALS TO UPGRADE THE QUALITY OF THE SAME, SAID APPARATUS COMPRISING A FIRST GENERALLY CYLINDRICAL VERTICAL CASING, A SECOND GENERALLY CYLINDRICAL VERTICAL CASING OF GREATER DIAMETER BUT LESSER AXIAL DEPTH MOUNTED ON TOP OF SAID FIRST CASING, THE TOP OF SAID FIRST CASING BEING OPEN AND IN COMMUNICATION WITH SAID SECOND CASING, AN INVOLUTE SCROLL FAN HOUSING MOUNTED ON TOP OF SAID SECOND CASING; A VERTICAL AXIS SHAFT EXTENDING CENTRALLY THROUGH SAID CASINGS AND FAN HOUSING AND JOURNALED FOR ROTATION THEREIN, MEANS TO DRIVE SAID SHAFT; A PLURALITY OF STACKED CLOSED END GRINDING ROTOR STAGES MOUNTED ON SAID SHAFT FOR ROTATION THEREWITH IN SAID FIRST CASING, A CLASSIFIER ROTOR MOUNTED ON SAID SHAFT FOR ROTATION THEREWITH IN THE UPPER PORTION OF SAID SECOND CASING, SAID CLASSIFIER ROTOR COMPRISING AN ANNULAR HORIZONTALLY DISPOSED DISK AND A PLURALITY OF SPACED HORIZONTALLY DISPOSED RADIAL FINGER-LIKE BLADES UNIFORMLY DISTRIBUTED AND EXTENDING AROUND THE PERIPHERY OF SAID
Claim 2
Dependent Claim
167 words
EXTRACTION APPARATUS FOR THE REMOVAL OF COARSER AND DENSER IMPURITIES AND CONTAMINANTS FROM NON-METALLIC SOLID MATERIALS TO UPGRADE THE QUALITY OF THE SAME, SAID APPARATUS COMPRISING A FIRST GENERALLY CYLINDRICAL VERTICAL CASING, A SECOND GENERALLY CYLINDRICAL VERTICAL CASING OF GREATER DIAMETER BUT LESSER AXIAL DEPTH MOUNTED ON TOP OF SAID FIRST CASING, THE TOP OF SAID FIRST CASING BEING OPEN AND IN COMMUNICATION WITH SAID SECOND CASING, AN INVOLUTE SCROLL FAN HOUSING MOUNTED ON TOP OF SAID SECOND CASING; A VERTICAL AXIS SHAFT EXTENDING CENTRALLY THROUGH SAID CASINGS AND FAN HOUSING AND JOURNALED FOR ROTATION THEREIN, MEANS TO DRIVE SAID SHAFT; A PLURALITY OF STACKED CLOSED END GRINDING ROTOR STAGES MOUNTED ON SAID SHAFT FOR ROTATION THEREWITH IN SAID FIRST CASING, A CLASSIFIER ROTOR MOUNTED ON SAID SHAFT FOR ROTATION THEREWITH IN THE UPPER PORTION OF SAID SECOND CASING, SAID CLASSIFIER ROTOR COMPRISING AN ANNULAR HORIZONTALLY DISPOSED DISK AND A PLURALITY OF SPACED HORIZONTALLY DISPOSED RADIAL FINGER-LIKE BLADES UNIFORMLY DISTRIBUTED AND EXTENDING AROUND THE PERIPHERY OF SAID
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) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |