US3924489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential type automatic speed changing apparatus including variable speed torque converter
Assignee: Individual
•
Filing: 1974-04-29
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Granted: 1975-12-09
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Expires: 1994-04-29
Abstract
Abstract The differential type automatic speed changing apparatus comprises a combination of a drive shaft, a driven shaft connected to a load, a variable speed torque converter including a pump and a turbine, and a differential gearing including a plurality of differential gears and a carrier. One of the differential gears is coupled with the driven shaft and the other differential gear is coupled with the pump of the torque converter whereby the speed ratio between the drive shaft and the driven shaft is varied automatically in accordance with the load on the driven shaft.
Inventors
- 👤 Shoji Yasuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:05
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; F16H47/08; F16H47/12; F16H47/085; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19033; Y10T74/19037
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
145 words
Differential automatic speed changing apparatus comprising a rotatable drive shaft and a rotatable driven shaft, variable speed fluid coupler means between said drive and driven shafts for imparting rotation from the former to the latter, said variable speed fluid coupler means including drive and driven elements operatively coupled together by a liquid, differential gearing means coupled between said variable speed fluid coupler means and said driven shaft for imparting rotation to the latter in conjunction with said variable speed fluid coupler means, said differential gearing means including first gear means connected to said drive element, said differential gearing means further including second gear means connected to said drive shaft and said driven element, said differential gearing means further including third gear means connected to said driven shaft, and said second gear means being between and in meshed relationship with said first and third gear means.
Claim 2
Dependent Claim
145 words
Differential automatic speed changing apparatus comprising a rotatable drive shaft and a rotatable driven shaft, variable speed fluid coupler means between said drive and driven shafts for imparting rotation from the former to the latter, said variable speed fluid coupler means including drive and driven elements operatively coupled together by a liquid, differential gearing means coupled between said variable speed fluid coupler means and said driven shaft for imparting rotation to the latter in conjunction with said variable speed fluid coupler means, said differential gearing means including first gear means connected to said drive element, said differential gearing means further including second gear means connected to said drive shaft and said driven element, said differential gearing means further including third gear means connected to said driven shaft, and said second gear means being between and in meshed relationship with said first and third gear means.
Claim 3
Dependent Claim
27 words
The apparatus as defined in claim 1 wherein said second gear means is a pair of gears each in mesh with said first and third gear means.
Claim 4
Dependent Claim
19 words
The apparatus as defined in claim 1 wherein said drive and driven elements are a pump and turbine, respectively.
Claim 5
Dependent Claim
26 words
The apparatus as defined in claim 1 including means for selectively coupling and uncoupling said driven shaft with said second gear means and said drive element.
Claim 6
Dependent Claim
53 words
The apparatus as defined in claim 1 including speed reducing gearing means coupled to said driven shaft, and said speed reducing gearing means including a sun gear carried by said driven shaft in meshed relationship with planetary gears which are in turn in meshed relationship with a ring gear having an output shaft.
Claim 7
Dependent Claim
104 words
The apparatus as defined in claim 1 including speed reducing gearing means coupled to said driven shaft, said speed reducing gearing means including s sun gear carried by said driven shaft in meshed relationship with planetary gears which are in turn in meshed relationship with a ring gear having an output shaft, cluth means including a plurality of interposed friction discs and clutch discs, one of said friction and clutch discs being connected to said planetary gears, and means for selectively engaging said friction discs and clutch discs to thereby reverse the direction of rotation of said output shaft relative to said driven shaft.
Claim 8
Dependent Claim
25 words
The apparatus as defined in claim 1 wherein said second gear means is connected by a common carrier to said drive shaft and drive element.
Claim 9
Dependent Claim
83 words
The apparatus as defined in claim 1 including means for selectively coupling and uncoupling said driven shaft with said second gear means and said drive element, said coupling and uncoupling means including a pair of selectively engageable blocking elements, one of said blocking elements being carried by said driven shaft, the other of said blocking elements being carried by said second gear means, and means for moving said blocking elements toward and away from each other for selectively engaging And disengaging the same.
Claim 10
Dependent Claim
18 words
The apparatus as defined in claim 1 wherein said first, second and third gear means are bevel gears.
Claim 11
Dependent Claim
19 words
The apparatus as defined in claim 2 wherein said drive and driven elements are a pump and turbine, respectively.
Claim 12
Dependent Claim
26 words
The apparatus as defined in claim 2 including means for selectively coupling and uncoupling said driven shaft with said second gear means and said drive element.
Claim 13
Dependent Claim
53 words
The apparatus as defined in claim 2 including speed reducing gearing means coupled to said driven shaft, and said speed reducing gearing means including a sun gear carried by said driven shaft in meshed relationship with planetary gears which are in turn in meshed relationship with a ring gear having an output shaft.
Claim 14
Dependent Claim
104 words
The apparatus as defined in claim 2 including speed reducing gearing means coupled to said driven shaft, said speed reducing gearing means including a sun gear carried by said driven shaft in meshed relationship with planetary gears which are in turn in meshed relationship with a ring gear having an output shaft, clutch means including a plurality of interposed friction discs and clutch discs, one of said friction and clutch discs being connected to said planetary gears, and means for selectively engaging said friction discs and clutch discs to thereby reverse the direction of rotation of said output shaft relative to said driven shaft.
Claim 15
Dependent Claim
83 words
The apparatus as defined in claim 2 including means for selectively coupling and uncoupling said driven shaft with said second gear means and said drive element, said coupling and uncoupling means including a apir of selectively engageable blocking elements, one of said blocking elements being carried by said driven shaft, the other of said blocking elements being carried by said second gear means, and means for moving said blocking elements toward and away from each other for selectively engaging and disengaging the same.
Claim 16
Dependent Claim
18 words
The apparatus as defined in claim 2 wherein said first, second and third gear means are bevel gears.
Claim 17
Dependent Claim
19 words
The apparatus as defined in claim 11 wherein said drive and driven elements are a pump and turbine, respectively.
Claim 18
Dependent Claim
19 words
The apparatus as defined in claim 12 wherein said drive and driven elements are a pump and turbine, respectively.
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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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |