Patent US3407542A successfully refreshed from Google Patents.
US3407542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic unloader for finishing mills
Assignee: Southwestern Engineering Co
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Filing: 1964-06-29
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Granted: 1968-10-29
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Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 Richard K Mckibben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:47
CPC Classifications
B; B24; B24B; B24B31/00; B24B31/06; B24B31/073
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
THE COMBINATION WITH AN ANNULAR FINISHING MILL ADAPTED TO CONTAIN A CHARGE OF TREATING MEDIA AND WORKPIECES SURROUNDED THEREBY, AND MEANS FOR VIBRATING SAID MILL TO CAUSE THE MEDIA AND WORKPIECE TO PROGRESS IN SPIRAL PATH DEFINING, ESSENTIALLY, A TOROID, OF AN UNLOADER, COMPRISING: (A) A SEPARATOR SCREEN COVERING A SEGMENT OF SAID MILL; (B) A DISCHARGE CHUTE LEADING FROM SAID SCREEN; (C) AND A RAMP EXTENDING ARCUATELY FROM THE BOTTOM OF SAID MILL TO SAID SEPARATOR SCREEN TO CARRY SAID CHARGE TO SAID SCREEN FOR DISCHARGE OF SAID WORKPIECES AND RETURN OF SAID MEDIA TO SAID MILL.
Claim 2
Dependent Claim
98 words
THE COMBINATION WITH AN ANNULAR FINISHING MILL ADAPTED TO CONTAIN A CHARGE OF TREATING MEDIA AND WORKPIECES SURROUNDED THEREBY, AND MEANS FOR VIBRATING SAID MILL TO CAUSE THE MEDIA AND WORKPIECE TO PROGRESS IN SPIRAL PATH DEFINING, ESSENTIALLY, A TOROID, OF AN UNLOADER, COMPRISING: (A) A SEPARATOR SCREEN COVERING A SEGMENT OF SAID MILL; (B) A DISCHARGE CHUTE LEADING FROM SAID SCREEN; (C) AND A RAMP EXTENDING ARCUATELY FROM THE BOTTOM OF SAID MILL TO SAID SEPARATOR SCREEN TO CARRY SAID CHARGE TO SAID SCREEN FOR DISCHARGE OF SAID WORKPIECES AND RETURN OF SAID MEDIA TO SAID MILL.
References Cited (Backward Citations)
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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) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |