US3287859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable grinding and surfacing tool
Assignee: NATIONAL-DETROIT Inc
•
Filing: 1965-08-23
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Granted: 1966-11-29
•
Expires: 1985-08-23
Abstract
No abstract record available.
Inventors
- 👤 Treffle J Leveque
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:55
CPC Classifications
B; B24; B24B; B24B23/00; B24B23/02; B24B23/03
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
138 words
A HAND TOO FOR SURFACE FINISHING WORKPIECES COMPRISING A MOTOR HAVING A DRIVE SHAFT PROVIDING A PROTRUDING END; A HOUSING RIGIDLY SECURED TO SAID MOTOR, SAID DRIVE SHAFT END EXTENDING INTO SAID HOUSING; A COUPLING MEMBER FIXED TO SAID DRIVE SHAFT END FOR ROTATION THEREWITH; DRIVEN MEANS MOUNTED FOR ROTATION ON AND WITH RESPECT TO SAID COUPLING MEMBER ABOUT AN AXIS ECCENTRIC TO THE AXIS OF SAID DRIVE SHAFT; RING MEANS FIXED TO SAID AND TO EFFECT ROTATIONAL MOVEMENT OF SAID DRIVEN MEANS ABOUT ITS AXIS DURING ORBITAL MOVEMENT OF SAID DRIVEN MEANS ABOUT THE AXIS OF SAID DRIVE SHAFT, THE RATIO OF THE RADIUS OF SID RING MEANS TO THE RADIUS OF SAID DRIVEN MEANS BEING LESS THAN TWO TO ONE; AND A ROTATIONAL WORK PERFORMING MEMBER SECURED FOR ROTATION AND ORBITAL MOVEMENT WITH SAID DRIVEN MEANS.
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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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |