US3863524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear train arrangements
Assignee: Nissan Motor Co Ltd
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Filing: 1972-09-13
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Granted: 1975-02-04
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Expires: 1992-09-13
Abstract
Abstract Gear train arrangements for transmitting a power from a driving source to a driven member at more than three speeds in one direction and another speed in the opposite direction, the gear train arrangements using basically three planetary gear sets and at least five friction elements such as clutches and brakes which are selectively actuated to selectively engage the rotary members of the three planetary gear sets to deliver an output power at the above said speeds. The gear train arrangements are specifically adapted for use in an automatic transmission system of a motor vehicle using a torque converter or fluid coupling.
Inventors
- 👤 Yoichi Mori
- 👤 Nobuo Okazaki
- 👤 Kunio Ohtsuka
- 👤 Tetsuya Iijima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:39
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; F16H47/08; F16H47/085; F16H3/00; F16H3/44; F16H3/62; F16H3/66; F16H3/663; F16H2200/00; F16H2200/003; F16H2200/0043; F16H2200/0047; F16H2200/0052; F16H2200/20; F16H2200/2002; F16H2200/201; F16H2200/2012
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
452 words
A gear train comprising: an input shaft (10); an output shaft (11); a first planetary gear set (12) having a ring gear (R1), a pinion carrier (15), a planet pinion (P1) meshing with the ring gear (R1) and rotatably journaled on the pinion carrier (15) and a sun gear (S1) meshing with the planet pinion (P1); a second planetary gear set (13) having a ring gear (R2) connected to the pinion carrier (15) of said first planetary gear set (12), a pinion carrier (16) a planet pinion (P2) meshing with the ring gear (R2) thereof and rotatably journaled on the pinion carrier (16) thereof and a sun gear (S2) meshing with the planet pinion (P2) thereof, the sun gear (S2) of said planetary gear set being connected to the sun gear (S1) of said first planetary gear set; a third planeary gear set (14) having a ring gear (R3) connected to the pinion carrier (16) of said second planetary gear set (13), a pinion carrier (17), a planet pinion (P3) meshing with the ring gear (R3) thereof and rotatably journaled on the pinion carrier (17) thereof and a sun gear (S3) meshing with the planet pinion (P3) thereof, the pinion carrier (17) of said third planetary gear set (14) being connected to said output shaft (11), the sun gear (S3) of said third planetary gear set being connected to the sun gear (S2) of said second planetary gear set; a first clutch means (C1) for engaging said input shaft (10) with the ring gear (R1) of said first planetary gear set (12) during operation of reverse speed and fourth forward speed; a second clutch means (C2) for engaging said input shaft (10) with the sun gears (S1, S2, S3) of said first, second and third planetary gear sets (12, 13, 14) during operation of first second, third and fourth forward speeds; a first brake means (B1) for anchoring the ring gear (R1) of said first planetary gear set (12) during operation of third forward speed; a second brake means (B2) for anchoring the pinion carrier (15) of said first planetary gear set (12) and the ring gear (R2) of said second planetary gear set (13) during operation of second forward speed; a third brake means (B3) for anchoring the ring gear (R3) of said third planetary gear set (14) and and the pinion carrier (16) of said second planetary gear set (13) during operation of reverse speed; and a one-way brake means (32) for preventing the ring gear (R3) of said third planetary gear set (14) and the pinion carrier (16) of said second planetary gear set (13) from rotating in a direction opposing to the rotation of said input shaft (10).
Claim 2
Dependent Claim
452 words
A gear train comprising: an input shaft (10); an output shaft (11); a first planetary gear set (12) having a ring gear (R1), a pinion carrier (15), a planet pinion (P1) meshing with the ring gear (R1) and rotatably journaled on the pinion carrier (15) and a sun gear (S1) meshing with the planet pinion (P1); a second planetary gear set (13) having a ring gear (R2) connected to the pinion carrier (15) of said first planetary gear set (12), a pinion carrier (16) a planet pinion (P2) meshing with the ring gear (R2) thereof and rotatably journaled on the pinion carrier (16) thereof and a sun gear (S2) meshing with the planet pinion (P2) thereof, the sun gear (S2) of said planetary gear set being connected to the sun gear (S1) of said first planetary gear set; a third planeary gear set (14) having a ring gear (R3) connected to the pinion carrier (16) of said second planetary gear set (13), a pinion carrier (17), a planet pinion (P3) meshing with the ring gear (R3) thereof and rotatably journaled on the pinion carrier (17) thereof and a sun gear (S3) meshing with the planet pinion (P3) thereof, the pinion carrier (17) of said third planetary gear set (14) being connected to said output shaft (11), the sun gear (S3) of said third planetary gear set being connected to the sun gear (S2) of said second planetary gear set; a first clutch means (C1) for engaging said input shaft (10) with the ring gear (R1) of said first planetary gear set (12) during operation of reverse speed and fourth forward speed; a second clutch means (C2) for engaging said input shaft (10) with the sun gears (S1, S2, S3) of said first, second and third planetary gear sets (12, 13, 14) during operation of first second, third and fourth forward speeds; a first brake means (B1) for anchoring the ring gear (R1) of said first planetary gear set (12) during operation of third forward speed; a second brake means (B2) for anchoring the pinion carrier (15) of said first planetary gear set (12) and the ring gear (R2) of said second planetary gear set (13) during operation of second forward speed; a third brake means (B3) for anchoring the ring gear (R3) of said third planetary gear set (14) and and the pinion carrier (16) of said second planetary gear set (13) during operation of reverse speed; and a one-way brake means (32) for preventing the ring gear (R3) of said third planetary gear set (14) and the pinion carrier (16) of said second planetary gear set (13) from rotating in a direction opposing to the rotation of said input shaft (10).
Claim 3
Dependent Claim
164 words
A gear train as claimed in claim 1, further comprising: an engine output shaft (10b) driven by an engine; a torque converter (46) having a turbine (T) connected to said input shaft (10) and an impeller (P) connected to said engine output shaft (10b); a fourth planetary gear set (45a) having a ring gear (R4), and a planet pinion (P4) meshing with the ring gear thereof and rotatably journaled on the pinion carrier (17) of said third planetary gear set (14) and said output shaft (11), the planet pinion (P4) of said fourth planetary gear set (45a) being integral with the planet pinion (P3) of said third planetary gear set (14); and a third clutch means (C3) for engaging said engine output shaft (10B) with the ring Gear (R4) of said fourth planetary gear set (45a) during operation of fifth forward speed, with said first brake means (b1) being operated thereby to anchor the ring gear (R1) of said first planetary gear set (12).
References Cited (Backward Citations)
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US3264902A
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US3410157A
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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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |