Patent US3115044A successfully refreshed from Google Patents.
US3115044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction driven steplessly variable speed gearing
Assignee: Individual
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Filing: 1961-03-29
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Granted: 1963-12-24
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Expires: 1981-03-29
Abstract
No abstract record available.
Inventors
- 👤 Andrews William Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:51
CPC Classifications
F; F16; F16H; F16H15/00; F16H15/02; F16H15/04; F16H15/06; F16H15/08; F16H15/10; F16H15/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
FRICTION DRIVEN STEPLESSLY VARIABLE SPEED GEARING INCLUDING AT LEAST TWO FRICTION DISCS SECURED IN FIXED SPACED RELATION ON A FIRST SHIFT, A SECOND SHAFT INCLINED RELATIVELY TO THE SAID FIRST SHAFT AND CARRYING AT LEAST ONE FRICTION DISC LOCATED BETWEEN SAID SPACED DISCS IN OVERLAPPING AND INCLINED RELATION THERETO AFFORDING V FORMATIONS BETWEEN THE RELATIVELY INCLINED DISCS, AND A ROTATABLE MOTION TRANSMITTING MEMBER DISPOSED IN EACH OF SAID V FORMATION, IN WHICH THE FACES OF THE FRICTION DISCS ARE SO FORMED THAT IN CHANGING THE GEAR RATIO OF THE CENTRES OF THE MOTION TRANSMITTING MEMBERS ENGAGING OPPOSITE FACES OF A DISC LOCATED BETWEEN THE RIGIDLY SPACED DISCS ARE EACH MOVED IN A PLANE WHICH IS NORMAL TO A LINE DIVIDING THE ANGLE BETWEEN THE RELATIVELY INCLINED SHAFTS AND SAID CENTRES ARE ALSO MOVED IN THE SAID PLANE ALONG A LINE WHICH INTERSECTS THE CENTRES OF THE SAID SHAFTS, AND INCLUDING MEANS FOR MAINTAINING THE MEMBERS DURING THEIR TRAVERSE MOTION IN A NEUTRAL POSITION SUCH THAT THEY HAVE NO INHERENT TENDENCY TO MOVE EITHER TO INCREASE OR TO DECREASE THE GEAR RATIO.
Claim 2
Dependent Claim
181 words
FRICTION DRIVEN STEPLESSLY VARIABLE SPEED GEARING INCLUDING AT LEAST TWO FRICTION DISCS SECURED IN FIXED SPACED RELATION ON A FIRST SHIFT, A SECOND SHAFT INCLINED RELATIVELY TO THE SAID FIRST SHAFT AND CARRYING AT LEAST ONE FRICTION DISC LOCATED BETWEEN SAID SPACED DISCS IN OVERLAPPING AND INCLINED RELATION THERETO AFFORDING V FORMATIONS BETWEEN THE RELATIVELY INCLINED DISCS, AND A ROTATABLE MOTION TRANSMITTING MEMBER DISPOSED IN EACH OF SAID V FORMATION, IN WHICH THE FACES OF THE FRICTION DISCS ARE SO FORMED THAT IN CHANGING THE GEAR RATIO OF THE CENTRES OF THE MOTION TRANSMITTING MEMBERS ENGAGING OPPOSITE FACES OF A DISC LOCATED BETWEEN THE RIGIDLY SPACED DISCS ARE EACH MOVED IN A PLANE WHICH IS NORMAL TO A LINE DIVIDING THE ANGLE BETWEEN THE RELATIVELY INCLINED SHAFTS AND SAID CENTRES ARE ALSO MOVED IN THE SAID PLANE ALONG A LINE WHICH INTERSECTS THE CENTRES OF THE SAID SHAFTS, AND INCLUDING MEANS FOR MAINTAINING THE MEMBERS DURING THEIR TRAVERSE MOTION IN A NEUTRAL POSITION SUCH THAT THEY HAVE NO INHERENT TENDENCY TO MOVE EITHER TO INCREASE OR TO DECREASE THE GEAR RATIO.
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) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |