US3592082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planetary gear transmission with interconnected planet carriers
Assignee: Individual
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Filing: 1969-09-04
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Granted: 1971-07-13
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Expires: 1989-09-04
Abstract
Abstract An automotive transmission with two cascaded planetary gear trains has the two planet carriers rigidly connected with each other and with the output shaft, the input shaft being alternatively connectable with one sun and one ring gear (forward) and other sun gear (reverse) or with one ring gear only (forward) and the two rigidly interconnected sun gears (reverse); in the latter case, one of the gear trains has two sets of intermeshing planet gears to invert the sense of relative rotation of the interconnected sun gears and planet carriers during operation in reverse gear.
Inventors
- 👤 Anton Ott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:25
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/44; F16H3/62; F16H3/66; F16H3/663; F16H3/666; F16H2200/00; F16H2200/003; F16H2200/0039; F16H2200/20; F16H2200/2002; F16H2200/2005; F16H2200/2007; F16H2200/202; F16H2200/2023
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
199 words
An automotive transmission for providing a plurality of speed ratios between an engine-driven input shaft and an output shaft, comprising: central gear means including at least one sun gear; a first and a second ring gear coaxial with said central gear means; first and second planet gear means in driving engagement with said first and second ring gears, respectively, and with said central gear means for providing a first and a second planetary gear train; carrier means for said first and second planet gear means interconnected for joint rotation about the axis of said central gear means, said output shaft being fixedly connected with said carrier means for entrainment thereby; first clutch means actuatable for operatively coupling said input shaft with one of said ring gears to establish a first, a second and a third forward position; second clutch means actuatable for operatively coupling said input shaft with said sun gear to establish the third forward position and a reverse position; first brake means actuatable for arresting said sun gear to establish the second forward position; and second brake means actuatable for arresting the other of said ring gears to establish the first forward position and said reverse position.
Claim 2
Dependent Claim
199 words
An automotive transmission for providing a plurality of speed ratios between an engine-driven input shaft and an output shaft, comprising: central gear means including at least one sun gear; a first and a second ring gear coaxial with said central gear means; first and second planet gear means in driving engagement with said first and second ring gears, respectively, and with said central gear means for providing a first and a second planetary gear train; carrier means for said first and second planet gear means interconnected for joint rotation about the axis of said central gear means, said output shaft being fixedly connected with said carrier means for entrainment thereby; first clutch means actuatable for operatively coupling said input shaft with one of said ring gears to establish a first, a second and a third forward position; second clutch means actuatable for operatively coupling said input shaft with said sun gear to establish the third forward position and a reverse position; first brake means actuatable for arresting said sun gear to establish the second forward position; and second brake means actuatable for arresting the other of said ring gears to establish the first forward position and said reverse position.
Claim 3
Dependent Claim
40 words
A transmission as defined in claim 1 wherein said central gear means includes a second sun gear in mesh with said second planet gear means and operatively coupled with said input shaft upon actuation of one of said clutch means.
Claim 4
Dependent Claim
41 words
A transmission as defined in claim 2 wherein said one of said ring gears is said first ring gear and is fixedly secured to said second sun gear for entrainment by said input shaft upon actuation of said first clutch means.
Claim 5
Dependent Claim
33 words
A transmission as defined in claim 2 wherein said second sun gear is rigidly connected with said one sun gear for entrainment by said input shaft upon actuation of said second clutch means.
Claim 6
Dependent Claim
53 words
A transmission as defined in claim 4 wherein said first planet gear means comprises two interengaging planet gears respectively meshing with said one sun gear and with said first ring gear, said second planet gear means comprising a third planet gear meshing with both said second sun gear and said second ring gear.
Claim 7
Dependent Claim
15 words
A transmission as defined in claim 2 wherein said ring gears have substantially identical radii.
Claim 8
Dependent Claim
37 words
A transmission as defined in claim 6 wherein said second sun gear is operatively coupled with said input shaft upon actuation of said first clutch means and is of substantially greater radius than said one sun gear.
Claim 9
Dependent Claim
50 words
A transmission as defined in claim 1 wherein said first planet gear means comprises a first planet gear in mesh with said first ring gear, said second planet gear means comprising a second planet gear in mesh with said sun gear, said first planet gear and said second ring gear.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |