US3071330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for fine grinding
Assignee: Altenburger Maschinen GmbH
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Filing: 1959-11-09
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Granted: 1963-01-01
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Expires: 1979-11-09
Abstract
No abstract record available.
Inventors
- 👤 Jackering Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:12
CPC Classifications
B; B02; B02C; B02C19/00; B02C19/0012; B02C19/005; B02C13/00; B02C13/14; B02C13/16; B02C13/18; B02C2013/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
AN APPARATUS FOR FINE GRINDING, SAID APPARATUS COMPRISING A CASING, A VERTICAL ROW OF BLADE-CARRYING ROTORS IN SAID CASING, ANOTHER CASING CONNECTED WITH THE FIRSTMENTIONED CASING BELOW SAID ROW OF ROTORS, AND A MECHANICAL FEED DEVICE LOCATED IN THE SECOND-MENTIONED CASING FOR FEEDING A SUBSTANCE TO BE GROUND TO THE FIRSTMENTIONED CASING BELOW SAID ROTORS, SAID MECHANICAL FEED DEVICE HAVING AN INNER END SPACED FROM THE INTERIOR OF THE FIRST-MENTIONED CASING, THE SECOND-MENTIONED CASING HAVING AN AIR VENT OPENING LOCATED BETWEEN SAID INNER END OF THE MECHANICAL FEED DEVICE AND THE INTERIOR OF THE FIRST-MENTIONED CASING, WHEREBY THE OPERATIVE SIZE OF SAID OPENING IS REGULATED BY AN ACCUMULATION OF SAID SUBSTANCE IN THE SPACE BETWEEN SAID INNER END OF THE MECHANICAL FEED DEVICE AND THE INTERIOR OF THE FIRST-MENTIONED CASING, THE FIRST-MENTIONED CASING HAVING AT LEAST ONE OTHER AIR VENT OPENING FOR FEEDING THE SUBSTANCE TO BE GROUND FROM THE SPACE BELOW SAID ROTORS TO SAID ROTORS.
Claim 2
Independent Claim
157 words
AN APPARATUS FOR FINE GRINDING, SAID APPARATUS COMPRISING A CASING, A VERTICAL ROW OF BLADE-CARRYING ROTORS IN SAID CASING, ANOTHER CASING CONNECTED WITH THE FIRSTMENTIONED CASING BELOW SAID ROW OF ROTORS, AND A MECHANICAL FEED DEVICE LOCATED IN THE SECOND-MENTIONED CASING FOR FEEDING A SUBSTANCE TO BE GROUND TO THE FIRSTMENTIONED CASING BELOW SAID ROTORS, SAID MECHANICAL FEED DEVICE HAVING AN INNER END SPACED FROM THE INTERIOR OF THE FIRST-MENTIONED CASING, THE SECOND-MENTIONED CASING HAVING AN AIR VENT OPENING LOCATED BETWEEN SAID INNER END OF THE MECHANICAL FEED DEVICE AND THE INTERIOR OF THE FIRST-MENTIONED CASING, WHEREBY THE OPERATIVE SIZE OF SAID OPENING IS REGULATED BY AN ACCUMULATION OF SAID SUBSTANCE IN THE SPACE BETWEEN SAID INNER END OF THE MECHANICAL FEED DEVICE AND THE INTERIOR OF THE FIRST-MENTIONED CASING, THE FIRST-MENTIONED CASING HAVING AT LEAST ONE OTHER AIR VENT OPENING FOR FEEDING THE SUBSTANCE TO BE GROUND FROM THE SPACE BELOW SAID ROTORS TO SAID ROTORS.
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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) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |