US3789697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque converters
Assignee: Individual
•
Filing: 1972-05-08
•
Granted: 1974-02-05
•
Expires: 1992-05-08
Abstract
Abstract The invention comprises a torque converter coupling having an input impeller, an output turbine, a power circulatory turbine, a first gearing connecting the circulatory turbine with the impeller and input shaft and the second gearing connecting the first gearing with the output shaft and a stationary part so that the circulatory turbine rotates at a speed less than that of the impeller at low output speeds and greater than that of the impeller at higher output speeds.
Inventors
- 👤 H Hobbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:59
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; F16H47/08; F16H47/085; F16H37/00; F16H37/02; F16H37/06; F16H37/08; F16H37/0833; F16H37/084; F16H2037/088
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
179 words
A torque converter coupling having input shaft, an impeller connected to the input shaft, an output shaft, an output turbine connected to the output shaft, a circulatory turbine disposed in the flow path between the impeller and said output turbine, a first gearing and a second gearing, said first gearing connecting the circulatory turbine to the impeller; said second gearing being connected with the first gearing, the output shaft and a stationary part; whereby the first gearing can transmit driving torque from said circulatory turbine to said impeller, and driving torque increased by the second gearing is transmitted from the circulatory turbine through said first gearing to the output shaft, and reaction torque is imparted to said stationary part, so that the said circulatory turbine will always rotate when the impeller rotates and in the same direction but at a speed less than that of the impeller at a lower speed part of the range of speeds of the output shaft and at a speed greater than that of the impeller at a higher speed part of said range.
Claim 2
Dependent Claim
179 words
A torque converter coupling having input shaft, an impeller connected to the input shaft, an output shaft, an output turbine connected to the output shaft, a circulatory turbine disposed in the flow path between the impeller and said output turbine, a first gearing and a second gearing, said first gearing connecting the circulatory turbine to the impeller; said second gearing being connected with the first gearing, the output shaft and a stationary part; whereby the first gearing can transmit driving torque from said circulatory turbine to said impeller, and driving torque increased by the second gearing is transmitted from the circulatory turbine through said first gearing to the output shaft, and reaction torque is imparted to said stationary part, so that the said circulatory turbine will always rotate when the impeller rotates and in the same direction but at a speed less than that of the impeller at a lower speed part of the range of speeds of the output shaft and at a speed greater than that of the impeller at a higher speed part of said range.
Claim 3
Dependent Claim
24 words
A torque converter as claimed in claim 1, wherein said first gearing is an epicyclic gearing and said second gearing is a planetary gearing.
Claim 4
Dependent Claim
115 words
A torque converter as claimed in claim 1, wherein said first gearing comprises a toothed ring gear, a carrier, a sun-wheel and a number of pinions in said carrier, said pinions engaging the ring gear and sunwheel, said second gearing comprising a second carrier, a toothed planetary gearing having two sun-wheels and pinions in said second carrier engaging the sun-wheels, the said first gearing having its ring gear connected with the impeller and input shaft, its pinion carrier connected with the circulatory turbine, and its sun-wheel connected with a sun-wheel of said second gearing, said second carrier being connected with the output shaft and the other sun-wheel of the second gearing to a stationary part.
Claim 5
Dependent Claim
44 words
A torque converter as claimed in claim 3 having a one-way detent between said other sun-wheel of the second gearing and said stationary part arranged to engage in a direction opposite to the direction of rotation of said other sun-wheel of the second gearing.
Claim 6
Dependent Claim
81 words
A torque converter as claimed in claim 1 wherein said first gearing comprises a toothed ring gear, a carrier, a sun-wheel and a number of pinions in said carrier, said pinions engaging the ring gear and sun-wheel, said second gearing comprising a second carrier, a toothed planetary gearing having two sun-wheels and pinions in said second carrier engaging the sun-wheels, and wherein the second gearing comprises two sets of pinions meshing with each other and meshing respectively with said two sun-wheels.
Claim 7
Dependent Claim
23 words
A torque converter as claimed in claim 1 wherein a part of the second gearing is also drivably connected to the output turbine.
References Cited (Backward Citations)
US2350810A
Cited
GB877849A
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US2969694A
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US3073182A
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US3270586A
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US3537260A
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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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |