Patent US3191341A successfully refreshed from Google Patents.
US3191341A
Expired / Lapsed
US
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Method of powering a precession toy
Assignee: Individual
•
Filing: 1960-10-10
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Granted: 1965-06-29
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Expires: 1980-10-10
Abstract
No abstract record available.
Inventors
- 👤 Lynn W Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:32
CPC Classifications
A; A63; A63H; A63H1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
THE METHOD OF POWERING A SPINNING TOP COMPRISING THE STEPS OF, SPINNING A TOP HAVING A SPHERICALLY SHAPED TIP ON A MOVABLE SURFACE THAT IS LARGE IN COMPARISON TO THE MAJOR DIAMETER OF THE TOP, MANIPULATING THE MOVABLE SURFACE BY ROCKING SAME TO OBTAIN AND MAINTAIN A CONTINUALLY CHANGING SKEW RELATION BETWEEN THE SPIN AXIS OF SAID TOP AND THE AXIS OF SAID SURFACE TO THEREBY CAUSE SAID SPINNING TOP TO MOVE IN SUBSTANTIALLY AN ANNULAR PATH ON SAID MOVABLE ROCKING SURFACE IN THE SAME DIRECTION AS THE DIRECTION OF ROTATION OF SAID TOP, CONTINUOUSLY POSITIONING THE MOVABLE SURFACE SO THAT SAID TOP CONTINUALLY MOVES IN A DOWNHILL DIRECTION ON SAID SURFACE UNDER THE INFLUENCE OF GRAVITY WHEREIN A TORQUE IS APPLIED TO THE SPHERICAL SHAPED TIP SUFFICIENT TO OVERCOME NORMAL FRICTION AND WINDAGE LOSSES.
Claim 2
Independent Claim
135 words
THE METHOD OF POWERING A SPINNING TOP COMPRISING THE STEPS OF, SPINNING A TOP HAVING A SPHERICALLY SHAPED TIP ON A MOVABLE SURFACE THAT IS LARGE IN COMPARISON TO THE MAJOR DIAMETER OF THE TOP, MANIPULATING THE MOVABLE SURFACE BY ROCKING SAME TO OBTAIN AND MAINTAIN A CONTINUALLY CHANGING SKEW RELATION BETWEEN THE SPIN AXIS OF SAID TOP AND THE AXIS OF SAID SURFACE TO THEREBY CAUSE SAID SPINNING TOP TO MOVE IN SUBSTANTIALLY AN ANNULAR PATH ON SAID MOVABLE ROCKING SURFACE IN THE SAME DIRECTION AS THE DIRECTION OF ROTATION OF SAID TOP, CONTINUOUSLY POSITIONING THE MOVABLE SURFACE SO THAT SAID TOP CONTINUALLY MOVES IN A DOWNHILL DIRECTION ON SAID SURFACE UNDER THE INFLUENCE OF GRAVITY WHEREIN A TORQUE IS APPLIED TO THE SPHERICAL SHAPED TIP SUFFICIENT TO OVERCOME NORMAL FRICTION AND WINDAGE LOSSES.
References Cited (Backward Citations)
CA538120A
Cited
US2112182A
Cited
US2318793A
Cited
US2468567A
Cited
US2700246A
Cited
US2906057A
Cited
US3025632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |