Patent US2508752A successfully refreshed from Google Patents.
Patent US3817124A successfully refreshed from Google Patents.
US3817124A
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: 1974-06-18
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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
- 👤 K Ohtsuka
- 👤 T Iijima
- 👤 Y Mori
- 👤 N Okazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:22
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: 21
Claim 1
Independent Claim
345 words
A gear train comprising: 1. an input shaft; 2. an output shaft; 3. a first planetary gear set having a ring gear, a pinion carrier carrying plAnet pinions meshing with the ring gear and a sun gear meshing with the planet pinion, the pinion carrier being connected with said output shaft; 4. a second planetary gear set having a ring gear connected to said output shaft and the carrier of said first planetary gear set, a pinion carrier carrying planet pinions meshing with the ring gear and a sun gear meshing with the planet pinions the sun gear being connected to the sun gear of said first planetary gear set; 5. a third planetary gear set having a ring gear connected to the carrier of said second planetary gear set, a pinion carrier carrying planet pinions meshing with the ring gear and a sun gear meshing with the planet pinions, the sun gear being connected to the sun gears of said first and second planetary gear sets; 6. a first clutch means for engaging said input shaft with the ring gear of said first planetary gear set during operation of first, second, third and fourth forward speeds; 7. a second clutch means for engaging said input shaft with the sun gears of said first, second and third planetary gear sets during operation of reverse speed and fourth forward speed; 7a. a first brake means for anchoring the carrier of the second planetary gear set and the ring gear of the third planetary gear set during operation of reverse speed; 8. a second brake means for anchoring the carrier of said third planetary gear set during operation of second forward speed; 9. a third brake means for anchoring the sun gears of said first, second and third planetary gear sets during operation of third forward speed; and 10. a one-way brake means for preventing the carrier of said second planetary gear set and the ring gear of said third planetary gear set from rotating in opposition to said input shaft during operation of first forward speed.
Claim 2
Dependent Claim
345 words
A gear train comprising: 1. an input shaft; 2. an output shaft; 3. a first planetary gear set having a ring gear, a pinion carrier carrying plAnet pinions meshing with the ring gear and a sun gear meshing with the planet pinion, the pinion carrier being connected with said output shaft; 4. a second planetary gear set having a ring gear connected to said output shaft and the carrier of said first planetary gear set, a pinion carrier carrying planet pinions meshing with the ring gear and a sun gear meshing with the planet pinions the sun gear being connected to the sun gear of said first planetary gear set; 5. a third planetary gear set having a ring gear connected to the carrier of said second planetary gear set, a pinion carrier carrying planet pinions meshing with the ring gear and a sun gear meshing with the planet pinions, the sun gear being connected to the sun gears of said first and second planetary gear sets; 6. a first clutch means for engaging said input shaft with the ring gear of said first planetary gear set during operation of first, second, third and fourth forward speeds; 7. a second clutch means for engaging said input shaft with the sun gears of said first, second and third planetary gear sets during operation of reverse speed and fourth forward speed; 7a. a first brake means for anchoring the carrier of the second planetary gear set and the ring gear of the third planetary gear set during operation of reverse speed; 8. a second brake means for anchoring the carrier of said third planetary gear set during operation of second forward speed; 9. a third brake means for anchoring the sun gears of said first, second and third planetary gear sets during operation of third forward speed; and 10. a one-way brake means for preventing the carrier of said second planetary gear set and the ring gear of said third planetary gear set from rotating in opposition to said input shaft during operation of first forward speed.
Claim 3
Dependent Claim
36 words
A gear train according to claim 1, further comprising a one-way brake means for preventing the carrier of said third planetary gear set from rotating in rotating direction opposing to the rotation of said input shaft.
Claim 4
Dependent Claim
3 words
an output shaft;
Claim 5
Dependent Claim
3 words
an output shaft;
Claim 6
Dependent Claim
38 words
a first planetary gear set having a ring gear, a pinion carrier carrying plAnet pinions meshing with the ring gear and a sun gear meshing with the planet pinion, the pinion carrier being connected with said output shaft;
Claim 7
Dependent Claim
38 words
a first planetary gear set having a ring gear, a pinion carrier carrying plAnet pinions meshing with the ring gear and a sun gear meshing with the planet pinion, the pinion carrier being connected with said output shaft;
Claim 8
Dependent Claim
58 words
a second planetary gear set having a ring gear connected to said output shaft and the carrier of said first planetary gear set, a pinion carrier carrying planet pinions meshing with the ring gear and a sun gear meshing with the planet pinions the sun gear being connected to the sun gear of said first planetary gear set;
Claim 9
Dependent Claim
58 words
a second planetary gear set having a ring gear connected to said output shaft and the carrier of said first planetary gear set, a pinion carrier carrying planet pinions meshing with the ring gear and a sun gear meshing with the planet pinions the sun gear being connected to the sun gear of said first planetary gear set;
Claim 10
Dependent Claim
56 words
a third planetary gear set having a ring gear connected to the carrier of said second planetary gear set, a pinion carrier carrying planet pinions meshing with the ring gear and a sun gear meshing with the planet pinions, the sun gear being connected to the sun gears of said first and second planetary gear sets;
Claim 11
Dependent Claim
56 words
a third planetary gear set having a ring gear connected to the carrier of said second planetary gear set, a pinion carrier carrying planet pinions meshing with the ring gear and a sun gear meshing with the planet pinions, the sun gear being connected to the sun gears of said first and second planetary gear sets;
Claim 12
Dependent Claim
29 words
a first clutch means for engaging said input shaft with the ring gear of said first planetary gear set during operation of first, second, third and fourth forward speeds;
Claim 13
Dependent Claim
29 words
a first clutch means for engaging said input shaft with the ring gear of said first planetary gear set during operation of first, second, third and fourth forward speeds;
Claim 14
Dependent Claim
61 words
a second clutch means for engaging said input shaft with the sun gears of said first, second and third planetary gear sets during operation of reverse speed and fourth forward speed; 7a. a first brake means for anchoring the carrier of the second planetary gear set and the ring gear of the third planetary gear set during operation of reverse speed;
Claim 15
Dependent Claim
61 words
a second clutch means for engaging said input shaft with the sun gears of said first, second and third planetary gear sets during operation of reverse speed and fourth forward speed; 7a. a first brake means for anchoring the carrier of the second planetary gear set and the ring gear of the third planetary gear set during operation of reverse speed;
Claim 16
Dependent Claim
20 words
a second brake means for anchoring the carrier of said third planetary gear set during operation of second forward speed;
Claim 17
Dependent Claim
20 words
a second brake means for anchoring the carrier of said third planetary gear set during operation of second forward speed;
Claim 18
Dependent Claim
25 words
a third brake means for anchoring the sun gears of said first, second and third planetary gear sets during operation of third forward speed; and
Claim 19
Dependent Claim
25 words
a third brake means for anchoring the sun gears of said first, second and third planetary gear sets during operation of third forward speed; and
Claim 20
Dependent Claim
38 words
a one-way brake means for preventing the carrier of said second planetary gear set and the ring gear of said third planetary gear set from rotating in opposition to said input shaft during operation of first forward speed.
Claim 21
Dependent Claim
38 words
a one-way brake means for preventing the carrier of said second planetary gear set and the ring gear of said third planetary gear set from rotating in opposition to said input shaft during operation of first forward speed.
References Cited (Backward Citations)
US3339431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |