Patent US3307431A successfully refreshed from Google Patents.
US3307431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Garden tractor
Assignee: AMF Inc
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Filing: 1964-06-05
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Granted: 1967-03-07
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Expires: 1984-06-05
Abstract
No abstract record available.
Inventors
- 👤 Hungerford Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:39
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/02; B62D53/025; B60; B60K; B60K17/00; B60K17/28; B62D49/00; B62D49/06; B62D49/0664; B62D49/0671; F; F16; F16H; F16H37/00; F16H2700/00; F16H2700/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
A TRANSMISSION COMPRISING: AN INPUT SHAFT; A SUN GEAR DRIVINGLY CONNECTED TO SAID INPUT SHAFT; A FIRST SET OF PLANET GEARS ARRANGED CIRCUMFERENTIALLY AROUND SAID SUN GEAR AND MESHING THEREWITH; A FIRST CUP-SHAPED DRUM HAVING AN AXIALLY EXTENDING, PERIPHERAL WALL PORTION SURROUNDING SAID FIRST SET OF PLANET GEARS AND HAVING AN INTERNAL RING GEAR MESHED THEREWITH, SAID FIRST DRUM ALSO HAVING A RADIALLY EXTENDING END WALL; A SECOND SET OF PLANET GEARS ENCIRCLING SAID SUN GEAR AND OUT OF ENGAGEMENT THEREWITH, SAID SECOND SET OF GEARS BEING MESHED WITH SAID FIRST SET OF GEARS; A SECOND DRUM ENCIRCLING SAID SECOND SET OF PLANET GEARS AND HAVING AN INTGERNAL RING GEAR MESHING THEREWITH; FRICTION MEANS ENGAGEABLE WITH EACH DRUM FOR PREVENTING ROTATION THEREOF; A CLUTCH ELE-
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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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |