Patent US1987412A successfully refreshed from Google Patents.
US3300907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for flat surface superfinishing
Assignee: ASAEDA
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Filing: 1964-05-13
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Granted: 1967-01-31
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Expires: 1984-05-13
Abstract
No abstract record available.
Inventors
- 👤 Asaeda Toshio
- 👤 Sakai Ryo
- 👤 Hirano Tadayoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:27
CPC Classifications
B; B24; B24B; B24B35/00; Y; Y10; Y10S; Y10S451/00; Y10S451/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
202 words
FLAT SURFACE SUPERFINISHING APPARATUS COMPRISING, IN COMBINATION, A VERY FINE GRAIN DISC-SHAPED ABRASIVE STONE; MEANS ROTATABLY MOUNTING SAID STONE FOR ROTATION ABOUT ITS AXIS; A LEVER EXTENDING PERPENDICULAR TO THE AXIS OF SAID STONE; MEANS PIVOTALLY SUPPORTING ONE END OF SAID LEVER FOR OSCILLATION OF SAID LEVER IN A PLANE PARALLEL TO THE WORKING FACE OF SAID STONE, THE FREE END OF SAID LEVER BEING FORKED; A WORK HOLDER MOUNTED ON SAID LEVER INTERMEDIATE THE ENDS THEREOF AND ADJACENT THE WORKING FACE OF SAID STONE; MEANS BIASING SAID WORK HOLDER TOWARD SAID STONE; AND DRIVING MEANS OPERATIVELY ASSOCIATED WITH THE FORKED END OF SAID LEVER AND OPERABLE TO IMPART A COMPOSITE OSCILLATION TO SAID LEVER, COMPRISING TWO SUPERPOSED OSCILLATIONS; SAID DRIVING MEANS INCLUDING A DRIVE SHAFT MOUNTED FOR ROTATION ABOUT AN AXIS SUBSTANTIALLY PARALLEL TO THE AXIS OF SAID STONE, A SMALLER DIAMETER STUB SHAFT EXTENDING ECCENTRICALLY FROM THE END OF SAID DRIVE SHAFT, AN INTERMEDIATE WHEEL ECCENTRICALLY MOUNTED ON SAID STUB SHAFT FOR FREE ROTATION THEREON AND HAVING A DISC PORTION AND A SMALLER DIAMETER HUB PORTION, SAID HUB PORTION BEING ROTATABLY ENGAGED IN SAID FORKED END OF SAID LEVER, AND A RING MEMBER, OF LARGER DIAMETER THAN SAID WHEEL DISC
Claim 2
Dependent Claim
202 words
FLAT SURFACE SUPERFINISHING APPARATUS COMPRISING, IN COMBINATION, A VERY FINE GRAIN DISC-SHAPED ABRASIVE STONE; MEANS ROTATABLY MOUNTING SAID STONE FOR ROTATION ABOUT ITS AXIS; A LEVER EXTENDING PERPENDICULAR TO THE AXIS OF SAID STONE; MEANS PIVOTALLY SUPPORTING ONE END OF SAID LEVER FOR OSCILLATION OF SAID LEVER IN A PLANE PARALLEL TO THE WORKING FACE OF SAID STONE, THE FREE END OF SAID LEVER BEING FORKED; A WORK HOLDER MOUNTED ON SAID LEVER INTERMEDIATE THE ENDS THEREOF AND ADJACENT THE WORKING FACE OF SAID STONE; MEANS BIASING SAID WORK HOLDER TOWARD SAID STONE; AND DRIVING MEANS OPERATIVELY ASSOCIATED WITH THE FORKED END OF SAID LEVER AND OPERABLE TO IMPART A COMPOSITE OSCILLATION TO SAID LEVER, COMPRISING TWO SUPERPOSED OSCILLATIONS; SAID DRIVING MEANS INCLUDING A DRIVE SHAFT MOUNTED FOR ROTATION ABOUT AN AXIS SUBSTANTIALLY PARALLEL TO THE AXIS OF SAID STONE, A SMALLER DIAMETER STUB SHAFT EXTENDING ECCENTRICALLY FROM THE END OF SAID DRIVE SHAFT, AN INTERMEDIATE WHEEL ECCENTRICALLY MOUNTED ON SAID STUB SHAFT FOR FREE ROTATION THEREON AND HAVING A DISC PORTION AND A SMALLER DIAMETER HUB PORTION, SAID HUB PORTION BEING ROTATABLY ENGAGED IN SAID FORKED END OF SAID LEVER, AND A RING MEMBER, OF LARGER DIAMETER THAN SAID WHEEL DISC
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |