Patent US3224285A successfully refreshed from Google Patents.
US3224285A
Expired / Lapsed
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Infinitely variable friction gearing
Assignee: Individual
•
Filing: 1963-04-29
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Granted: 1965-12-21
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 Maichen Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:04
CPC Classifications
F; F16; F16H; F16H15/00; F16H15/02; F16H15/04; F16H15/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
AN INFINITELY VARIABLE FRICTION GEARING COMPRISING AT LEAST ONE DRIVING SHAFT, AT LEAST ONE SUBSTANTIALLY CONICAL ROTOR HAVING A STRAIGHT GENERATRIX SECURED TO SAID DRIVING SHAFT FOR ROTATION THEREWITH, AN ASSOCIATED DRIVEN SHAFT COAXIAL WITH EACH DRIVING SHAFT AND ALSO HAVING AT LEAST ONE SUBSTANTIALLY CONICAL ROTOR WITH A STRAIGHT GENERATRIX SECURED THERETO, EACH ROTOR ON A DRIVING SHAFT TAPERING IN A DIRECTION OPPOSITE TO THE TAPER OF EACH ROTOR ON ITS ASSOCIATED DRIVEN SHAFT, AN ENDLESS RING-SHAPED, ROLLING CONTACT MEMBER SURROUNDING AND FRICTIONALLY ENGAGING THE TAPERED SURFACES OF EACH PAIR OF ROTORS ON ASSOCIATED DRIVING AND DRIVEN SHAFTS, AND MEANS FOR ADJUSTABLY DISPLACING EACH SAID ROLLING CONTACT MEMBER ALONG SAID TAPERED SURFACES TO PARALLEL POSITIONS FOR CHANGING THE SPEED OF THE GEARING.
Claim 2
Dependent Claim
123 words
AN INFINITELY VARIABLE FRICTION GEARING COMPRISING AT LEAST ONE DRIVING SHAFT, AT LEAST ONE SUBSTANTIALLY CONICAL ROTOR HAVING A STRAIGHT GENERATRIX SECURED TO SAID DRIVING SHAFT FOR ROTATION THEREWITH, AN ASSOCIATED DRIVEN SHAFT COAXIAL WITH EACH DRIVING SHAFT AND ALSO HAVING AT LEAST ONE SUBSTANTIALLY CONICAL ROTOR WITH A STRAIGHT GENERATRIX SECURED THERETO, EACH ROTOR ON A DRIVING SHAFT TAPERING IN A DIRECTION OPPOSITE TO THE TAPER OF EACH ROTOR ON ITS ASSOCIATED DRIVEN SHAFT, AN ENDLESS RING-SHAPED, ROLLING CONTACT MEMBER SURROUNDING AND FRICTIONALLY ENGAGING THE TAPERED SURFACES OF EACH PAIR OF ROTORS ON ASSOCIATED DRIVING AND DRIVEN SHAFTS, AND MEANS FOR ADJUSTABLY DISPLACING EACH SAID ROLLING CONTACT MEMBER ALONG SAID TAPERED SURFACES TO PARALLEL POSITIONS FOR CHANGING THE SPEED OF THE GEARING.
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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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |