US3287846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyroscopic top
Assignee: Individual
•
Filing: 1963-08-19
•
Granted: 1966-11-29
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Expires: 1983-08-19
Abstract
No abstract record available.
Inventors
- 👤 Everett W Frangos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:29
CPC Classifications
A; A63; A63H; A63H1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A GYROSCOPIC TOP, COMPRISING A ROTOR, A SPINDLE ROTATABLY SUPPORTING SAID ROTOR, A HUB MOUNTED ON EACH END OF SAID SPINDLE, EACH OF SAID HUBS BEING CONVEX AT LEAST ON THE END FACING SAID SPINDLE, SAID ROTOR BEING FORMED WITH A COUNTERSINKING ON EACH SIDE THEREOF AND ADJACENT SAID HUBS, SAID COUNTERSINKING BEING OF SUFFICIENT DEPTH TO RECEIVE AT LEAST THE INNER CONVEX ENDS OF SAID HUBS IN RECESSED RELATION TO THE OUTER SURFACES OF SAID ROTOR, SAID ROTOR BEING FORMED WITH AN AXIAL PASSAGE THERETHROUGH, A TUBULAR BEARING MOUNTED ON EACH END OF SAID PASSAGE AND ROTATABLY SUPPORTING SAID SPINDLE, SAID BEARING HAVING A CONVEX HEAD PORTION ENGAGING THE INNER END OF SAID HUB.
Claim 2
Dependent Claim
115 words
A GYROSCOPIC TOP, COMPRISING A ROTOR, A SPINDLE ROTATABLY SUPPORTING SAID ROTOR, A HUB MOUNTED ON EACH END OF SAID SPINDLE, EACH OF SAID HUBS BEING CONVEX AT LEAST ON THE END FACING SAID SPINDLE, SAID ROTOR BEING FORMED WITH A COUNTERSINKING ON EACH SIDE THEREOF AND ADJACENT SAID HUBS, SAID COUNTERSINKING BEING OF SUFFICIENT DEPTH TO RECEIVE AT LEAST THE INNER CONVEX ENDS OF SAID HUBS IN RECESSED RELATION TO THE OUTER SURFACES OF SAID ROTOR, SAID ROTOR BEING FORMED WITH AN AXIAL PASSAGE THERETHROUGH, A TUBULAR BEARING MOUNTED ON EACH END OF SAID PASSAGE AND ROTATABLY SUPPORTING SAID SPINDLE, SAID BEARING HAVING A CONVEX HEAD PORTION ENGAGING THE INNER END OF SAID HUB.
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) | 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 |