US3226044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding mill
Assignee: Nisso Seiko KK
•
Filing: 1962-10-24
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Granted: 1965-12-28
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Expires: 1982-10-24
Abstract
No abstract record available.
Inventors
- 👤 Matsubayashi Yukio
- 👤 Sato Ryokichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:53
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/80; B01F27/92; B01F27/921; B02; B02C; B02C17/00; B02C17/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A GRINDING MILL COMPRISING AN OUTER SHELL HAVING RIBS EXTENDING INWARDLY ABOUT ITS INTERNAL SURFACE A SCREW MOUNTED FOR ROTATION WITHIN SAID HSELL, GRINDING MEDIA PACKED TIGHTLY INTO SAID SHELL, SAID GRINDING MEDIA BEING COMPOSED OF PARTICLES SUFFICIENTLY SMALL TO LODGE BETWEEN SAID RIBS AND TO PASS DOWNWARDLY BETWEEN SAID RIBS AND THE OUTER EXTREMITIES OF SAID SCREW.
Claim 2
Dependent Claim
58 words
A GRINDING MILL COMPRISING AN OUTER SHELL HAVING RIBS EXTENDING INWARDLY ABOUT ITS INTERNAL SURFACE A SCREW MOUNTED FOR ROTATION WITHIN SAID HSELL, GRINDING MEDIA PACKED TIGHTLY INTO SAID SHELL, SAID GRINDING MEDIA BEING COMPOSED OF PARTICLES SUFFICIENTLY SMALL TO LODGE BETWEEN SAID RIBS AND TO PASS DOWNWARDLY BETWEEN SAID RIBS AND THE OUTER EXTREMITIES OF SAID SCREW.
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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |