US3971268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed change gear system
Assignee: Aisin Corp
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Filing: 1974-10-11
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Granted: 1976-07-27
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Expires: 1994-10-11
Abstract
Abstract A speed change gear system includes an input shaft, an output shaft and three planetary gear sets interposed therebetween. The first planetary gear set includes a first sun gear, a first planetary gear intermeshed with the first sun gear, a first ring gear enmeshed with the first planetary gear, and a first carrier rotatably supporting the first planetary gear while the second planetary gear set includes a second sun gear, a second planetary gear enmeshed with the second sun gear, a second ring gear intermeshed with the second planetary gear and drivingly connected to the first carrier, and a second carrier rotatably supporting the second planetary gear. The third planetary gear set similarly includes a third sun gear drivingly connected to the second sun gear, a third planetary gear interengaged with the third sun gear, a third ring gear enmeshed with the third planetary gear and drivingly connected to the second carrier and the first ring gear, and a third carrier rotatably supporting the third planetary gear and drivingly connected to the output shaft. A first clutch is provided for engaging or disengaging the input shaft with the first ring gear, the second carrier, and the third ring gear, and a second clutch is similarly provided for engaging or disengaging the input shaft with the first carrier and the second ring gear while a third clutch is additionally provided for engaging or disengaging the input shaft with the first sun gear. A first brake is also provided for fixedly securing the first sun gear relative to the gear casing while a second brake is similarly provided for fixedly securing the first ring gear, the second carrier, and the third ring gear to the casing, and a third brake is also provided for fixedly securing the second and third sun gears to the casing.
Inventors
- 👤 Noboru Murakami
- 👤 Koichiro Hirosawa
- 👤 Koichi Matsuo
- 👤 Kazuo Ohara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:27
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/44; F16H3/62; F16H3/66; F16H2200/00; F16H2200/003; F16H2200/0052; F16H2200/0056; F16H2200/006; F16H2200/0065; F16H2200/0082; F16H2200/0086; F16H2200/0091; F16H2200/20; F16H2200/2002; F16H2200/201; F16H2200/2012
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
106 words
A speed change gear system comprising: an input shaft; an output shaft; a first planetary gear set including a first sun gear, a first planetary gear meshed with said first sun gear, a first ring gear meshed with said first planetary gear, a first carrier rotatably supporting said first planetary gear; a second planetary gear set including a second sun gear, a second planetary gear meshed with said second sun gear, a second ring gear meshed with said second planetary gear and drivingly connected to said first carrier, and a second carrier rotatably supporting said second planetary gear and drivingly connected to said first ring gear;
Claim 2
Dependent Claim
106 words
A speed change gear system comprising: an input shaft; an output shaft; a first planetary gear set including a first sun gear, a first planetary gear meshed with said first sun gear, a first ring gear meshed with said first planetary gear, a first carrier rotatably supporting said first planetary gear; a second planetary gear set including a second sun gear, a second planetary gear meshed with said second sun gear, a second ring gear meshed with said second planetary gear and drivingly connected to said first carrier, and a second carrier rotatably supporting said second planetary gear and drivingly connected to said first ring gear;
Claim 3
Dependent Claim
177 words
a third planetary gear set including a third sun gear drivingly connected to said second sun gear, a third planetary gear meshed with said third sun gear, a third ring gear meshed with said third planetary gear and drivingly connected to said carrier and said first ring gear, and a third carrier rotatably supporting said third planetary gear and drivingly connected to said output shaft; a first clutch for engaging or disengaging said input shaft and said first ring gear and said second carrier and said third ring gear; a second clutch for engaging or disengaging said input shaft and said first carrier and said second ring gear; a third clutch for engaging or disengaging said input shaft and said first sun gear; a first brake for fixedly mounting said first sun gear on a casing; a second brake for fixedly mounting said first ring gear and said second carrier and said third ring gear to said casing; and a third brake for fixedly mounting said second sun gear and said third sun gear to said casing.
Claim 4
Dependent Claim
177 words
a third planetary gear set including a third sun gear drivingly connected to said second sun gear, a third planetary gear meshed with said third sun gear, a third ring gear meshed with said third planetary gear and drivingly connected to said carrier and said first ring gear, and a third carrier rotatably supporting said third planetary gear and drivingly connected to said output shaft; a first clutch for engaging or disengaging said input shaft and said first ring gear and said second carrier and said third ring gear; a second clutch for engaging or disengaging said input shaft and said first carrier and said second ring gear; a third clutch for engaging or disengaging said input shaft and said first sun gear; a first brake for fixedly mounting said first sun gear on a casing; a second brake for fixedly mounting said first ring gear and said second carrier and said third ring gear to said casing; and a third brake for fixedly mounting said second sun gear and said third sun gear to said casing.
Claim 5
Dependent Claim
83 words
A speed change gear system as set forth in claim 1, additionally comprising: a fourth planetary gear set including a fourth sun gear drivingly connected to said output shaft, a fourth planetary gear meshed with said fourth sun gear, a fourth ring gear meshed with said fourth planetary gear and drivingly connected to said second and third sun gears, and a fourth carrier for rotatably supporting said fourth planetary gear; and a fourth brake for fixedly mounting said fourth carrier on said casing.
Claim 6
Dependent Claim
86 words
A speed change gear system as set forth in claim 1, additionally comprising: a fourth planetary gear set including a fourth sun gear drivingly connected to said second sun gear and said third sun gear, a fourth planetary gear meshed with said fourth sun gear, a fourth ring gear meshed with said fourth planetary gear and drivingly connected to said output shaft, and a fourth carrier for rotatably supporting said fourth planetary gear; and a fourth brake for fixedly mounting said fourth carrier on said casing.
Claim 7
Dependent Claim
89 words
A speed change gear system as set forth in claim 1, additionally comprising: a fourth planetary gear set including a fourth sun gear, a fourth planetary gear meshed with said fourth sun gear, a fourth ring gear meshed with said fourth planetary gear and drivingly connected to said third carrier and said output shaft, and a fourth carrier for rotatably supporting said fourth planetary gear and drivingly connected to said second and third sun gears; and a fourth brake for fixedly mounting said fourth sun gear on said casing.
Claim 8
Dependent Claim
95 words
A speed change gear system as set forth in claim 1, additionally comprising: a fourth planetary gear set including a fourth sun gear drivingly connected to said first ring gear and said second carrier and said third ring gear, a fourth planetary gear meshed with said fourth sun gear, a fourth ring gear meshed with said fourth planetary gear, and a fourth carrier for rotatably supporting said fourth planetary gear and drivingly connected to said third carrier and said output shaft; and a fourth brake for fixedly mounting said fourth ring gear on said casing.
Claim 9
Dependent Claim
269 words
A speed change gear system comprising: an input shaft; an output shaft; a first planetary gear set including a first sun gear, a first planetary gear meshed with said first sun gear, a first ring gear meshed with said first planetary gear, a first carrier rotatably supporting said first planetary gear; a second planetary gear set including a second sun gear, a second planetary gear meshed with said second sun gear, a second ring gear meshed with said second planetary gear and drivingly connected to said first carrier, and a second carrier rotatably supporting said second planetary gear and drivingly connected to said first ring gear; a third planetary gear set including a third sun gear drivingly connected to said second sun gear, a third planetary gear meshed with said third sun gear, a third ring gear meshed with said third planetary gear and drivingly connected to said second carrier and said first ring gear, and a third carrier rotatably supporting said third planetary gear and drivingly connected to said output shaft; a first clutch for engaging or disengaging said input shaft and said first ring gear and said second carrier and said third ring gear; a second clutch for engaging or disengaging said input shaft and said first carrier and said second ring gear; a third clutch for engaging or disengaging said input shaft and said first sun gear; a brake for fixedly mounting said first ring gear and said second carrier and said third ring gear to said casing; and another brake for fixedly mounting said second sun gear and said third sun gear to said casing.
Claim 10
Dependent Claim
269 words
A speed change gear system comprising: an input shaft; an output shaft; a first planetary gear set including a first sun gear, a first planetary gear meshed with said first sun gear, a first ring gear meshed with said first planetary gear, a first carrier rotatably supporting said first planetary gear; a second planetary gear set including a second sun gear, a second planetary gear meshed with said second sun gear, a second ring gear meshed with said second planetary gear and drivingly connected to said first carrier, and a second carrier rotatably supporting said second planetary gear and drivingly connected to said first ring gear; a third planetary gear set including a third sun gear drivingly connected to said second sun gear, a third planetary gear meshed with said third sun gear, a third ring gear meshed with said third planetary gear and drivingly connected to said second carrier and said first ring gear, and a third carrier rotatably supporting said third planetary gear and drivingly connected to said output shaft; a first clutch for engaging or disengaging said input shaft and said first ring gear and said second carrier and said third ring gear; a second clutch for engaging or disengaging said input shaft and said first carrier and said second ring gear; a third clutch for engaging or disengaging said input shaft and said first sun gear; a brake for fixedly mounting said first ring gear and said second carrier and said third ring gear to said casing; and another brake for fixedly mounting said second sun gear and said third sun gear to said casing.
Claim 11
Dependent Claim
26 words
A speed change gear system as set forth in claim 6, further comprising: an additional brake for fixedly mounting said first sun gear upon said casing.
Claim 12
Dependent Claim
82 words
A speed change gear system as set forth in claim 6, further comprising: a fourth planetary gear set including a fourth sun gear drivingly connected to said output shaft, a fourth planetary gear meshed with said fourth sun gear, a fourth ring gear meshed with said fourth planetary gear and drivingly connected to said second and third sun gears, and a fourth carrier for rotatably supporting said fourth planetary gear; and a brake for fixedly mounting said fourth carrier on said casing.
Claim 13
Dependent Claim
26 words
A speed change gear system as set forth in claim 8, further comprising: an additional brake for fixedly mounting said first sun gear upon said casing.
Claim 14
Dependent Claim
85 words
A speed change gear system as set forth in claim 6, further comprising: a fourth planetary gear set including a fourth sun gear drivingly connected to said second sun gear and said third sun gear, a fourth planetary gear meshed with said fourth sun gear, a fourth ring gear meshed with said fourth planetary gear and drivingly connected to said output shaft, and a fourth carrier for rotatably supporting said fourth planetary gear; and a brake for fixedly mounting said fourth carrier on said casing.
Claim 15
Dependent Claim
26 words
A speed change gear system as set forth in claim 10, further comprising: an additional brake for fixedly mounting said first sun gear upon said casing.
Claim 16
Dependent Claim
88 words
A speed change gear system as set forth in claim 6, further comprising: a fourth planetary gear set including a fourth sun gear, a fourth planetary gear meshed with said fourth sun gear, a fourth ring gear meshed with said fourth planetary gear and drivingly connected to said third carrier and said output shaft, and a fourth carrier for rotatably supporting said fourth planetary gear and drivingly connected to said second and third sun gears; and a brake for fixedly mounting said fourth sun gear on said casing.
Claim 17
Dependent Claim
26 words
A speed change gear system as set forth in claim 12, further comprising: an additional brake for fixedly mounting said first sun gear upon said casing.
Claim 18
Dependent Claim
94 words
A speed change gear system as set forth in claim 6, further comprising: a fourth planetary gear set including a fourth sun gear drivingly connected to said first ring gear and said second carrier and said third ring gear, a fourth planetary gear meshed with said fourth sun gear, a fourth ring gear meshed with said fourth planetary gear, and a fourth carrier for rotatably supporting said fourth planetary gear and drivingly connected to said third carrier and said output shaft; and a brake for fixedly mounting said fourth ring gear on said casing.
Claim 19
Dependent Claim
25 words
A speed change gear system as set forth in claim 14, further comprising: an additional brake fixedly mounting said first sun gear upon said casing.
References Cited (Backward Citations)
US3067632A
Cited
US3823622A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |