US3673890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary transmission
Assignee: Deutz Allis Corp
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Filing: 1970-09-03
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Granted: 1972-07-04
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Expires: 1990-09-03
Abstract
Abstract An auxiliary transmission for transmission of power to or from a main transmission to increase the overall speed range of the power gear train in a vehicle.
Inventors
- 👤 James W Crooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:49
CPC Classifications
F; F16; F16H; F16H37/00; F16H37/02; F16H37/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
238 words
A gear train for power transmission comprising a main transmission including a plurality of gears and clutch means mounted in a housing providing a plurality of gear ratios, a drive shaft, a drive gear connected to said drive shaft, and an output shaft connected to an output shaft gear for selectively transmitting power at the plurality of gear ratios from said transmission, a countershaft gearset including a driven gear drivingly connected to said output shaft gear of said main transmission, an auxiliary transmission selectively and alternatively connected for driving said drive shaft, said auxiliary transmission including a planetary gearset having elements including a ring gear, a sun gear, and a plurality of planetary gears supported on a planetary carrier, an input shaft connected to said ring gear, said drive shaft connected to said planetary carrier and said drive shaft gear, a first clutch connected to said sun gear, a friction element of said clutch connected to at least one of said elements including said ring gear and said planetary carrier to selectively lock said planetary gearset, a countershaft drive gear for driving said countershaft gearset, a second clutch connected between said sun gear and said countershaft drive gear for selectively driving said countershaft gearset from said sun gear, means selectively and alternatively disengaging and engaging said clutches of said auxiliary transmission to increase the speed range of said main transmission when operated in conjunction with said auxiliary transmissions.
Claim 2
Dependent Claim
238 words
A gear train for power transmission comprising a main transmission including a plurality of gears and clutch means mounted in a housing providing a plurality of gear ratios, a drive shaft, a drive gear connected to said drive shaft, and an output shaft connected to an output shaft gear for selectively transmitting power at the plurality of gear ratios from said transmission, a countershaft gearset including a driven gear drivingly connected to said output shaft gear of said main transmission, an auxiliary transmission selectively and alternatively connected for driving said drive shaft, said auxiliary transmission including a planetary gearset having elements including a ring gear, a sun gear, and a plurality of planetary gears supported on a planetary carrier, an input shaft connected to said ring gear, said drive shaft connected to said planetary carrier and said drive shaft gear, a first clutch connected to said sun gear, a friction element of said clutch connected to at least one of said elements including said ring gear and said planetary carrier to selectively lock said planetary gearset, a countershaft drive gear for driving said countershaft gearset, a second clutch connected between said sun gear and said countershaft drive gear for selectively driving said countershaft gearset from said sun gear, means selectively and alternatively disengaging and engaging said clutches of said auxiliary transmission to increase the speed range of said main transmission when operated in conjunction with said auxiliary transmissions.
Claim 3
Dependent Claim
35 words
A gear train for power transmission as set forth in claim 1 including a brake on said housing having a friction element connected to said sun gear for braking said sun gear to the housing.
Claim 4
Dependent Claim
44 words
A gear train for power transmission as set forth in claim 1 wherein said first clutch includes a friction element connected to said planetary carrier to thereby lock to said planetary gearset to provide direct drive from said input shaft to said drive shaft.
Claim 5
Dependent Claim
44 words
A gear train for power transmission as set forth in claim 1 wherein said first clutch includes a friction element connected to said ring gear to thereby lock to said planetary gearset to provide direct drive from said input shaft to said drive shaft.
Claim 6
Dependent Claim
71 words
A gear train for power transmission as set forth in claim 1 wherein said second clutch includes a friction element connected to said countershaft drive gear providing a power path for reaction torque from said sun gear through said countershaft gearset to said output shaft for reaction torque and a power path for driving torque from said planetary carrier through said drive shaft and said main transmission to said output shaft.
Claim 7
Dependent Claim
79 words
A power train for use in a vehicle as set forth in claim 1 wherein said first clutch includes a friction element on said planetary carrier for locking said sun gear with said planetary carrier and said second clutch includes a friction element on said countershaft drive gear for connecting said sun gear with said countershaft gearset to thereby provide a reaction torque through said countershaft gearset to said output shaft and a driving torque throUgh said main transmission.
Claim 8
Dependent Claim
86 words
A gear train for power transmission as set forth in claim 1 wherein said first clutch includes a friction element clutching said ring rear to said sun gear to lock said planetary gearset, said second clutch includes a friction element on said countershaft drive gear connecting said sun gear to said countershaft gearset to thereby provide reaction torque through said countershaft gearset and driving torque through said drive shaft in said main transmission to thereby provide an overdrive from said input shaft to said output shaft.
Claim 9
Dependent Claim
87 words
A gear train for power transmission as set forth in claim 1 including means for selectively engaging a high speed range in said main transmission, said second clutch includes a friction element on said countershaft drive gear providing power transmission from said sun gear to said countershaft gearset to thereby provide a reaction torque through said countershaft gearset to said output shaft, and said planetary carrier drives through said drive shaft to said main transmission to thereby provide overdrive from said input shaft to said output shaft.
Claim 10
Dependent Claim
70 words
A power train for use in a vehicle as set forth in claim 1 including means for selectively engaging a low speed range in said main transmission, a brake on said housing including a friction element connecting said sun gear with said housing to drive from said planetary carrier through said drive shaft and said main transmission to thereby provide an underdrive from said input shaft to said output shaft.
Claim 11
Dependent Claim
43 words
A power train for use in a vehicle as set forth in claim 1 wherein said first clutch includes a friction element on said ring gear for locking said planetary gearset to provide direct drive from said input shaft to said drive shaft.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |