US3739647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planetary transmission
Assignee: Deutz Allis Corp
•
Filing: 1971-10-12
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Granted: 1973-06-19
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Expires: 1991-10-12
Abstract
Abstract A power shift transmission having planetary and countershaft gearsets, and clutch carriers for selectively transmitting power to and from the elements of the gearsets to selectively provide one of a multiplicity of speed ratios through the transmission.
Inventors
- 👤 J Crooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:06
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/44; F16H3/62; F16H3/66; F16H3/666; F16H37/00; F16H2200/00; F16H2200/003; F16H2200/0052; F16H2200/20; F16H2200/2002; F16H2200/2007; F16H2702/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
292 words
A transmission comprising an input shaft and an output shaft rotatably mounted in a transmission case, a front planetary gearset having a sun gear driven by said input shaft, a rear planetary gearset having a sun gear connected to a planetary carrier of the front planetary gearset and driving said output shaft, means connecting the ring gear of said front planetary gearset with the ring gear of said rear planetary gearset, a front clutch carrier rotatably mounted for coaxial rotation with said input shaft, a rear clutch carrier mounted for coaxial rotation with said output shaft, said front planetary gearset including the elements of a sun gear, a ring gear, and a planetary carrier, a plurality of clutches mounted on said front clutch carrier for clutching said carrier to said elements of said front planetary gearset, said rear planetary gearset defining a dual pinion planetary gearset including dual planetary pinions and having a common direction of rotation of the ring gear and the sun gear, said rear planetary gearset including the elements of a planetary carrier, a ring gear, a sun gear, two clutches mounted on said rear clutch carrier for clutching said rear clutch carrier with two of said elements of said rear planetary gearset, a brake mounted on said transmission case for clutching said front clutch carrier to said transmission case, a drive gear connected to said front clutch carrier, a driven gear connected to said rear clutch carrier, a countershaft gearing for engagement with said drive gear and said driven gear thereby providing a countershaft gearset between said clutch carriers, means for selectively actuating at least one of said brakes and clutches to thereby selectively provide one of a plurality of power paths and gear ratios through said transmission.
Claim 2
Dependent Claim
292 words
A transmission comprising an input shaft and an output shaft rotatably mounted in a transmission case, a front planetary gearset having a sun gear driven by said input shaft, a rear planetary gearset having a sun gear connected to a planetary carrier of the front planetary gearset and driving said output shaft, means connecting the ring gear of said front planetary gearset with the ring gear of said rear planetary gearset, a front clutch carrier rotatably mounted for coaxial rotation with said input shaft, a rear clutch carrier mounted for coaxial rotation with said output shaft, said front planetary gearset including the elements of a sun gear, a ring gear, and a planetary carrier, a plurality of clutches mounted on said front clutch carrier for clutching said carrier to said elements of said front planetary gearset, said rear planetary gearset defining a dual pinion planetary gearset including dual planetary pinions and having a common direction of rotation of the ring gear and the sun gear, said rear planetary gearset including the elements of a planetary carrier, a ring gear, a sun gear, two clutches mounted on said rear clutch carrier for clutching said rear clutch carrier with two of said elements of said rear planetary gearset, a brake mounted on said transmission case for clutching said front clutch carrier to said transmission case, a drive gear connected to said front clutch carrier, a driven gear connected to said rear clutch carrier, a countershaft gearing for engagement with said drive gear and said driven gear thereby providing a countershaft gearset between said clutch carriers, means for selectively actuating at least one of said brakes and clutches to thereby selectively provide one of a plurality of power paths and gear ratios through said transmission.
Claim 3
Dependent Claim
95 words
A transmission as set forth in claim 1 wherein said front clutch carrier carries a clutch having a friction member connected to the ring gear of said front planetary gearset and said rear clutch carrier carries a clutch having a friction member connected to the sun gear of said rear planetary gearset to thereby provide positive torque and forward rotation from the planetary carrier of said front planetary gearset to the output shaft and a negative reaction torque through the ring gear and the countershaft gearset to provide a reverse rotation of the output shaft.
Claim 4
Dependent Claim
83 words
A transmission as set forth in claim 1 wherein said brake on said transmission case includes a friction member connected to the front clutch carrier and said front clutch carrier includes a clutch having a friction member connected to the ring gear of the front planetary gearset for braking the front clutch carrier and providing a positive torque through the carrier of the front planetary gearset to the sun gear of the rear planetary gearset to provide a forward speed, high torque output.
Claim 5
Dependent Claim
99 words
A transmission as set forth in claim 1 wherein said brake on said transmission case includes a friction member connected to the front clutch carrier and said rear clutch carrier includes a friction member connected to the planetary carrier of the rear planetary gearset to thereby provide a positive driving torque transmitted from the planetary carrier of the first planetary gearset to the sun gear of the rear planetary gearset and a negative reaction torque through the ring gears of said first and second planetary gearsets to thereby provide a positive high torque output on the output drive shaft.
Claim 6
Dependent Claim
116 words
A transmission as set forth in claim 1 wherein said front clutch carrier includes a clutch having a friction member connected to the ring gear of the front planetary gearset and the rear clutch carrier includes a friction member connected to the planetary carrier of the rear planetary gearset to thereby provide a positive torque driving from the planetary carrier of the front planetary gearset to the sun gear of the rear planetary gearset and a negative torque transmitted through the ring gears and the countershaft gearing to provide a reaction torque on the ring gear and the planetary carrier of the rear planetary gearset to thereby provide a forward positive torque output on said transmission.
Claim 7
Dependent Claim
120 words
A transmission as set forth in claim 1 wherein said front clutch carrier includes a clutch having a friction member connected to the planetary carrier of the front planetary gearset and said rear clutch carrier includes a clutch having a friction member connected to the planetary carrier of the rear planetary gearset to thereby provide a positive torque transmitted from the planetary carrier of the front planetary gearset to the sun gear of the rear planetary gearset to the output shaft and a negative reaction torque transmitted through the ring gears and a negative reaction torque transmitted through the rear planetary carrier of the rear planetary gearset to thereby provide a resultant torque of positive rotation in the output shaft.
Claim 8
Dependent Claim
82 words
A transmission as set forth in claim 1 wherein said front clutch carrier includes a clutch having a friction member connected to the sun gear of the front planetary gearset, said rear clutch carrier includes a clutch having a friction member connected to planetary carrier of the rear planetary gearset to thereby provide a positive torque of forward rotation transmitted through the planetary carrier of the front planetary gearset to the sun gear of the rear planetary gearset and the output shaft.
Claim 9
Dependent Claim
85 words
A transmission as set forth in claim 1 wherein said front clutch carrier includes a clutch having a friction member connected to the sun gear of the front planetary gearset and a clutch having a friction member connected to the ring gear of said front planetary gearset to thereby lock the front planetary gearset and provide a direct drive through the front planetary gearset to the output drive shaft providing a positive low output torque of forward rotation on the output shaft of the transmission.
Claim 10
Dependent Claim
34 words
A transmission as set forth in claim 1 wherein said transmission includes an input drive shaft integral with and including a power take-off shaft including means adapted for connection to the power take-off shaft.
Claim 11
Dependent Claim
32 words
A transmission as set forth in claim 1 wherein said output shaft defines a quill shaft rotatably receiving said input shaft to thereby provide coaxial rotation of the input and output shafts.
References Cited (Backward Citations)
US2793533A
Cited
US2932202A
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US3065643A
Cited
US3430518A
Cited
US3487723A
Cited
US3487724A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |