US3308686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two speed planetary gear auxiliary range transmission
Assignee: ZF Friedrichshafen AG
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Filing: 1964-09-04
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Granted: 1967-03-14
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Expires: 1984-09-04
Abstract
No abstract record available.
Inventors
- 👤 Magg Alfred
- 👤 Angerer Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:42
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/02; F16H61/0262; F16H61/0265; F16H61/0267; F16H61/0269; F16H63/00; F16H63/02; F16H63/30; F16H63/3023; F16H63/3026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A SPEED REDUCING AND DIRECT DRIVE AUXILIARY TRANSMISSION FOR USE IN CONJUNCTION WITH A MAIN TRANSMISSION, COMPRISING AN INPUT SHAFT TO BE DRIVEN BY THE MAIN TRANSMISSION, AN OUTPUT SHAFT COAXIAL WITH SAID INPUT SHAFT FOR DRIVING A VEHICLE, A PLANETARY GEAR SYSTEM HAVING PLANETARY GEARS FOR DRIVING SAID OUTPUT SHAFT, A SUN GEAR ON SAID INPUT SHAFT MESHING WITH SAID PLANETARY GEARS, AND A RING GEAR, FRICTIONAL BRAKE MEANS OPERATIVE TO EFFECT BRAKING OF SAID RING GEAR RESPONSIVE TO PREDETERMINED LOW SPEED OF SAID OUTPUT SHAFT TO MAINTAIN A REDUCED SPEED DRIVE FOR SAID VEHICLE, AND FRICTIONAL CLUTCH MEANS FOR FRICTIONALLY COUPLING SAID INPUT SHAFT TO SAID OUTPUT SHAFT RESPONSIVE TO A PREDETERMINED INCREASE OF SPEED OF SAID OUTPUT SHAFT, WHEREIN SAID BRAKE AND CLUTCH MEANS COMPRISE PRESSURE OPERATED DEVICES, AND CONTROL MEANS COMPRISING PUMP
Claim 2
Dependent Claim
136 words
A SPEED REDUCING AND DIRECT DRIVE AUXILIARY TRANSMISSION FOR USE IN CONJUNCTION WITH A MAIN TRANSMISSION, COMPRISING AN INPUT SHAFT TO BE DRIVEN BY THE MAIN TRANSMISSION, AN OUTPUT SHAFT COAXIAL WITH SAID INPUT SHAFT FOR DRIVING A VEHICLE, A PLANETARY GEAR SYSTEM HAVING PLANETARY GEARS FOR DRIVING SAID OUTPUT SHAFT, A SUN GEAR ON SAID INPUT SHAFT MESHING WITH SAID PLANETARY GEARS, AND A RING GEAR, FRICTIONAL BRAKE MEANS OPERATIVE TO EFFECT BRAKING OF SAID RING GEAR RESPONSIVE TO PREDETERMINED LOW SPEED OF SAID OUTPUT SHAFT TO MAINTAIN A REDUCED SPEED DRIVE FOR SAID VEHICLE, AND FRICTIONAL CLUTCH MEANS FOR FRICTIONALLY COUPLING SAID INPUT SHAFT TO SAID OUTPUT SHAFT RESPONSIVE TO A PREDETERMINED INCREASE OF SPEED OF SAID OUTPUT SHAFT, WHEREIN SAID BRAKE AND CLUTCH MEANS COMPRISE PRESSURE OPERATED DEVICES, AND CONTROL MEANS COMPRISING PUMP
References Cited (Backward Citations)
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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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |