Patent US3714740A successfully refreshed from Google Patents.
US3714740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear deburring device
Assignee: Individual
•
Filing: 1970-08-24
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Granted: 1973-02-06
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Expires: 1990-08-24
Abstract
Abstract A DEVICE FOR SIMULTANEOUSLY DEBURRING BOTH FACES OF A CENTERLESS GEAR. THE DEBURRING DEVICE INCLUDES A CENTERLESS GEAR HOLDING MEANS HAVING A PLURALITY OF EXTENDABLE ARMS RADIALLY MOUNTED TO A ROTATABLE TABLE. EACH OF THE ARMS HAS A RESILIENT MEMBER AT ITS OUTER END WHICH WHEN EXTENDED RADIALLY BY HYDRAULIC MEANS, CONTACTS AND EXERTS A FORCE ON THE INNER WALLS OF THE CENTERLESS GEAR. THE AMOUNT OF HYDRAULIC FORCE EXERTED IS SUFFICIENT TO HOLD THE GEAR SUSPENDED IN A "FLOATING" RELATIONSHIP ABOVE A SUPPORT SURFACE. A PAIR OF ABRASIVE SPINDLES ARE CARRIED ON THE GEAR HOLDING MEANS FOR GEARING DEBURRING.
Inventors
- 👤 F Steinhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:17
CPC Classifications
B; B23; B23F; B23F19/00; B23F19/10; B23F19/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |