Patent US3811343A successfully refreshed from Google Patents.
US3811343A
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: 1974-05-21
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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
- 👤 Y Mori
- 👤 N Okazaki
- 👤 K Ohtsuka
- 👤 T Iijima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:48
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/44; F16H3/62; F16H3/66; F16H3/663; F16H2200/00; F16H2200/003; F16H2200/0043; F16H2200/0047; F16H2200/0052; F16H2200/20; F16H2200/2002; F16H2200/2007; F16H2200/201; F16H2200/2012; F16H2200/202; F16H2200/2023
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
305 words
A gear train comprising: 1. an input shaft; 2. a first planetary gear set having a ring gear, a pinion carrier, a planet pinion meshing with the ring gear and rotatably journaled on the pinion carrier, and sun gear meshing with the planet pinion, the ring gear being connected to said input shaft; 3. a second planetary gear set having a ring gear, a pinion carrier, a planet pinion meshing with the ring gear and rotatably journaled on the pinion carrier, and a sun gear meshing with the planet pinion, the ring gear being connected to the carrier of said first planetary gear set; 4. a thiRd planetary gear set having a ring gear, a pinion carrier, a planet pinion meshing with the ring gear and rotatably journaled on the pinion carrier, and a sun gear meshing with the planet pinion, the sun gear being connected with the sun gear of said second planetary gear set, the carrier being connected to said output shaft; 5. first clutch means for engaging said input shaft with the sun gear of said first planetary gear set during operation of second and fourth forward speeds; 6. second clutch means for engaging said input shaft with the ring gear of said first planetary gear set, the carrier of said second planetary gear set and the ring gear of said third planetary gear set during operation of third and fourth forward speeds; 7. first brake means for anchoring the sun gear of said first planetary gear set during operation of first forward speed and reverse speed; 8. second brake means for anchoring the pinion carrier of said second planetary gear set during operation of reverse speed; and third brake means for anchoring the sun gears of said second and said third planetary gear sets during first, second and third forward speeds.
Claim 2
Dependent Claim
305 words
A gear train comprising: 1. an input shaft; 2. a first planetary gear set having a ring gear, a pinion carrier, a planet pinion meshing with the ring gear and rotatably journaled on the pinion carrier, and sun gear meshing with the planet pinion, the ring gear being connected to said input shaft; 3. a second planetary gear set having a ring gear, a pinion carrier, a planet pinion meshing with the ring gear and rotatably journaled on the pinion carrier, and a sun gear meshing with the planet pinion, the ring gear being connected to the carrier of said first planetary gear set; 4. a thiRd planetary gear set having a ring gear, a pinion carrier, a planet pinion meshing with the ring gear and rotatably journaled on the pinion carrier, and a sun gear meshing with the planet pinion, the sun gear being connected with the sun gear of said second planetary gear set, the carrier being connected to said output shaft; 5. first clutch means for engaging said input shaft with the sun gear of said first planetary gear set during operation of second and fourth forward speeds; 6. second clutch means for engaging said input shaft with the ring gear of said first planetary gear set, the carrier of said second planetary gear set and the ring gear of said third planetary gear set during operation of third and fourth forward speeds; 7. first brake means for anchoring the sun gear of said first planetary gear set during operation of first forward speed and reverse speed; 8. second brake means for anchoring the pinion carrier of said second planetary gear set during operation of reverse speed; and third brake means for anchoring the sun gears of said second and said third planetary gear sets during first, second and third forward speeds.
Claim 3
Dependent Claim
44 words
a first planetary gear set having a ring gear, a pinion carrier, a planet pinion meshing with the ring gear and rotatably journaled on the pinion carrier, and sun gear meshing with the planet pinion, the ring gear being connected to said input shaft;
Claim 4
Dependent Claim
44 words
a first planetary gear set having a ring gear, a pinion carrier, a planet pinion meshing with the ring gear and rotatably journaled on the pinion carrier, and sun gear meshing with the planet pinion, the ring gear being connected to said input shaft;
Claim 5
Dependent Claim
37 words
A gear train according to claim 1, further comprising one-way brake means for preventing the sun gear of said first planetary gear set from rotating in a direction opposite to the rotation direction of said input shaft.
Claim 6
Dependent Claim
50 words
a second planetary gear set having a ring gear, a pinion carrier, a planet pinion meshing with the ring gear and rotatably journaled on the pinion carrier, and a sun gear meshing with the planet pinion, the ring gear being connected to the carrier of said first planetary gear set;
Claim 7
Dependent Claim
50 words
a second planetary gear set having a ring gear, a pinion carrier, a planet pinion meshing with the ring gear and rotatably journaled on the pinion carrier, and a sun gear meshing with the planet pinion, the ring gear being connected to the carrier of said first planetary gear set;
Claim 8
Dependent Claim
59 words
a thiRd planetary gear set having a ring gear, a pinion carrier, a planet pinion meshing with the ring gear and rotatably journaled on the pinion carrier, and a sun gear meshing with the planet pinion, the sun gear being connected with the sun gear of said second planetary gear set, the carrier being connected to said output shaft;
Claim 9
Dependent Claim
59 words
a thiRd planetary gear set having a ring gear, a pinion carrier, a planet pinion meshing with the ring gear and rotatably journaled on the pinion carrier, and a sun gear meshing with the planet pinion, the sun gear being connected with the sun gear of said second planetary gear set, the carrier being connected to said output shaft;
Claim 10
Dependent Claim
26 words
first clutch means for engaging said input shaft with the sun gear of said first planetary gear set during operation of second and fourth forward speeds;
Claim 11
Dependent Claim
26 words
first clutch means for engaging said input shaft with the sun gear of said first planetary gear set during operation of second and fourth forward speeds;
Claim 12
Dependent Claim
44 words
second clutch means for engaging said input shaft with the ring gear of said first planetary gear set, the carrier of said second planetary gear set and the ring gear of said third planetary gear set during operation of third and fourth forward speeds;
Claim 13
Dependent Claim
44 words
second clutch means for engaging said input shaft with the ring gear of said first planetary gear set, the carrier of said second planetary gear set and the ring gear of said third planetary gear set during operation of third and fourth forward speeds;
Claim 14
Dependent Claim
23 words
first brake means for anchoring the sun gear of said first planetary gear set during operation of first forward speed and reverse speed;
Claim 15
Dependent Claim
23 words
first brake means for anchoring the sun gear of said first planetary gear set during operation of first forward speed and reverse speed;
Claim 16
Dependent Claim
44 words
second brake means for anchoring the pinion carrier of said second planetary gear set during operation of reverse speed; and third brake means for anchoring the sun gears of said second and said third planetary gear sets during first, second and third forward speeds.
Claim 17
Dependent Claim
44 words
second brake means for anchoring the pinion carrier of said second planetary gear set during operation of reverse speed; and third brake means for anchoring the sun gears of said second and said third planetary gear sets during first, second and third forward speeds.
References Cited (Backward Citations)
US2813437A
Cited
US3523468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |