Patent US3835732A successfully refreshed from Google Patents.
US3835732A
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: 1974-09-17
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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 20:06
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/44; F16H3/62; F16H3/66; F16H3/663; F16H47/00; F16H47/06; F16H47/08; F16H47/085; F16H2200/00; F16H2200/003; F16H2200/0043; F16H2200/0047; F16H2200/0052; F16H2200/20; F16H2200/2002; F16H2200/201; F16H2200/2012
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
346 words
A gear train for transmitting rotary drive from a rotary drive source to a driven member, said change speed gear train comprising: 1. an input shaft connected to said source to be rotated thereby in one given direction only; 2. an output shaft connected to said driven member; 3. a first planetary gear set; 4. a second planetary gear set; 5. a third planetary gear set and each of said planetary gear sets comprising: a. firstly, a rotary member in the form of an outer ring gear which is internally toothed; b. secondly, a rotary member in the form of a sun gear which is externally toothed; c. thirdly, a planet pinion meshing both with said ring gear and with said sun gear; and d. fourthly a rotary member in the form of a pinion carrier rotatably carrying the planet pinion; 6. said input shaft, said output shaft and said rotary members of said first, second and third planetary gear sets all being rotatably about a common axis; 7. said change speed gear train also comprising a plurality of mechanical linkages each constantly connecting together a respective pair of said rotary members to prevent rotation other than synchronous rotation of the respective pair of rotary members; 8. a first clutch and a second clutch each selectively operable to connect said input shaft to at least one respective one of said rotary members; 9. a first brake, a second brake and a third brake each selectively operable to brake at least one respective one of said rotary members against rotation about said axis; 10. said change speed gear train being adapted to produce, upon rotation of said input shaft in said given direction, rotation of said output shaft selectively in said given direction with at least four different speeds and also selectively in the opposite direction with one speed and further comprising a fourth planetary gear set comprising: a. firstly, a rotary member in the form of a sun gear which is externally toothed; and b. secondly, a planet pinion which meshes with the lastmentioned sun gear;
Claim 2
Dependent Claim
346 words
A gear train for transmitting rotary drive from a rotary drive source to a driven member, said change speed gear train comprising: 1. an input shaft connected to said source to be rotated thereby in one given direction only; 2. an output shaft connected to said driven member; 3. a first planetary gear set; 4. a second planetary gear set; 5. a third planetary gear set and each of said planetary gear sets comprising: a. firstly, a rotary member in the form of an outer ring gear which is internally toothed; b. secondly, a rotary member in the form of a sun gear which is externally toothed; c. thirdly, a planet pinion meshing both with said ring gear and with said sun gear; and d. fourthly a rotary member in the form of a pinion carrier rotatably carrying the planet pinion; 6. said input shaft, said output shaft and said rotary members of said first, second and third planetary gear sets all being rotatably about a common axis; 7. said change speed gear train also comprising a plurality of mechanical linkages each constantly connecting together a respective pair of said rotary members to prevent rotation other than synchronous rotation of the respective pair of rotary members; 8. a first clutch and a second clutch each selectively operable to connect said input shaft to at least one respective one of said rotary members; 9. a first brake, a second brake and a third brake each selectively operable to brake at least one respective one of said rotary members against rotation about said axis; 10. said change speed gear train being adapted to produce, upon rotation of said input shaft in said given direction, rotation of said output shaft selectively in said given direction with at least four different speeds and also selectively in the opposite direction with one speed and further comprising a fourth planetary gear set comprising: a. firstly, a rotary member in the form of a sun gear which is externally toothed; and b. secondly, a planet pinion which meshes with the lastmentioned sun gear;
Claim 3
Dependent Claim
28 words
said second input shaft being connected constantly to the planet carrier of said second planetary gear set and operatively connected to another driving source through said third clutch;
Claim 4
Dependent Claim
28 words
said second input shaft being connected constantly to the planet carrier of said second planetary gear set and operatively connected to another driving source through said third clutch;
Claim 5
Dependent Claim
52 words
A gear train as claimed in claim 1, wherein said second brake is combined with a one-way brake preventing the pinion carrier of said first planetary gear set and the ring gear of said second planetary gear set from rotating in the direction opposite to said given direction of said input shaft.
Claim 6
Dependent Claim
8 words
an output shaft connected to said driven member;
Claim 7
Dependent Claim
8 words
an output shaft connected to said driven member;
Claim 8
Dependent Claim
5 words
a first planetary gear set;
Claim 9
Dependent Claim
5 words
a first planetary gear set;
Claim 10
Dependent Claim
56 words
said first brake being operable and said third clutch being couplable for selecting an overdriving speed from said fourth speed in said given direction, whereby rotational drive can be transmitted from either of said driving sources to said output shaft at five different speeds in said given direction and the one speed in the opposite direction.
Claim 11
Dependent Claim
56 words
said first brake being operable and said third clutch being couplable for selecting an overdriving speed from said fourth speed in said given direction, whereby rotational drive can be transmitted from either of said driving sources to said output shaft at five different speeds in said given direction and the one speed in the opposite direction.
Claim 12
Dependent Claim
53 words
A gear train as claimed in claim 2, wherein said third second brake is combined with a one-way brake preventing the pinion carrier of said second planetary gear set and the ring gear of said third planetary gear set from rotating in the direction opposite to said given direction of said input shaft.
Claim 13
Dependent Claim
11 words
A gear train as claimed in claim 3 and further comprising:
Claim 14
Dependent Claim
5 words
a second planetary gear set;
Claim 15
Dependent Claim
5 words
a second planetary gear set;
Claim 16
Dependent Claim
80 words
a third planetary gear set and each of said planetary gear sets comprising: a. firstly, a rotary member in the form of an outer ring gear which is internally toothed; b. secondly, a rotary member in the form of a sun gear which is externally toothed; c. thirdly, a planet pinion meshing both with said ring gear and with said sun gear; and d. fourthly a rotary member in the form of a pinion carrier rotatably carrying the planet pinion;
Claim 17
Dependent Claim
80 words
a third planetary gear set and each of said planetary gear sets comprising: a. firstly, a rotary member in the form of an outer ring gear which is internally toothed; b. secondly, a rotary member in the form of a sun gear which is externally toothed; c. thirdly, a planet pinion meshing both with said ring gear and with said sun gear; and d. fourthly a rotary member in the form of a pinion carrier rotatably carrying the planet pinion;
Claim 18
Dependent Claim
26 words
said input shaft, said output shaft and said rotary members of said first, second and third planetary gear sets all being rotatably about a common axis;
Claim 19
Dependent Claim
26 words
said input shaft, said output shaft and said rotary members of said first, second and third planetary gear sets all being rotatably about a common axis;
Claim 20
Dependent Claim
37 words
said change speed gear train also comprising a plurality of mechanical linkages each constantly connecting together a respective pair of said rotary members to prevent rotation other than synchronous rotation of the respective pair of rotary members;
Claim 21
Dependent Claim
37 words
said change speed gear train also comprising a plurality of mechanical linkages each constantly connecting together a respective pair of said rotary members to prevent rotation other than synchronous rotation of the respective pair of rotary members;
Claim 22
Dependent Claim
25 words
a first clutch and a second clutch each selectively operable to connect said input shaft to at least one respective one of said rotary members;
Claim 23
Dependent Claim
25 words
a first clutch and a second clutch each selectively operable to connect said input shaft to at least one respective one of said rotary members;
Claim 24
Dependent Claim
29 words
a first brake, a second brake and a third brake each selectively operable to brake at least one respective one of said rotary members against rotation about said axis;
Claim 25
Dependent Claim
29 words
a first brake, a second brake and a third brake each selectively operable to brake at least one respective one of said rotary members against rotation about said axis;
Claim 26
Dependent Claim
83 words
said change speed gear train being adapted to produce, upon rotation of said input shaft in said given direction, rotation of said output shaft selectively in said given direction with at least four different speeds and also selectively in the opposite direction with one speed and further comprising a fourth planetary gear set comprising: a. firstly, a rotary member in the form of a sun gear which is externally toothed; and b. secondly, a planet pinion which meshes with the last-mentioned sun gear;
Claim 27
Dependent Claim
83 words
said change speed gear train being adapted to produce, upon rotation of said input shaft in said given direction, rotation of said output shaft selectively in said given direction with at least four different speeds and also selectively in the opposite direction with one speed and further comprising a fourth planetary gear set comprising: a. firstly, a rotary member in the form of a sun gear which is externally toothed; and b. secondly, a planet pinion which meshes with the last-mentioned sun gear;
Claim 28
Dependent Claim
118 words
The planet pinion of said fourth planetary gear set being rotatably carried by the planet carrier of said second planetary gear set, wherein the sun gears of said first and second planetary gear sets are connected constantly to each other, th sun gears of said third and fourth planetary gear sets are connected constantly to each other, the pinion carrier of said first planetary gear set is connected constantly to the ring gear of said second planetary gear set, the pinion carrier of said second planetary gear set is connected constantly to the ring gear of said third planetary gear set, and the planet carrier of said third planetary gear set is connected constantly to said output shaft;
Claim 29
Dependent Claim
118 words
The planet pinion of said fourth planetary gear set being rotatably carried by the planet carrier of said second planetary gear set, wherein the sun gears of said first and second planetary gear sets are connected constantly to each other, th sun gears of said third and fourth planetary gear sets are connected constantly to each other, the pinion carrier of said first planetary gear set is connected constantly to the ring gear of said second planetary gear set, the pinion carrier of said second planetary gear set is connected constantly to the ring gear of said third planetary gear set, and the planet carrier of said third planetary gear set is connected constantly to said output shaft;
Claim 30
Dependent Claim
302 words
The planet pinion of said fourth planetary gear set being rotatably carried by the planet carrier of said second planetary gear set, wherein the sun gears of said first and second planetary gear sets are connected constantly to each other, th sun gears of said third and fourth planetary gear sets are connected constantly to each other, the pinion carrier of said first planetary gear set is connected constantly to the ring gear of said second planetary gear set, the pinion carrier of said second planetary gear set is connected constantly to the ring gear of said third planetary gear set, and the planet carrier of said third planetary gear set is connected constantly to said output shaft; 12. said first clutch being operatively connected between said input shaft and the ring gear of said said first planetary gear set and couplable for selecting the fourth speed in said given direction and the one speed in the opposite dIrection; 13. said second clutch being operatively connected between said input shaft and the sun gears of said first and second planetary gear sets and couplable for selecting the first, second, third and fourth speeds in said given direction; 14. said first brake being operatively connected to the ring gear of said first planetary gear set and operable for selecting the third speed in said given direction; 15. said third brake being operatively connected to the pinion carrier of said second planetary gear set and the ring gear of said third planetary gear set and operable for selecting the second speed in said given direction; and 16. said second brake being operatively connected to the planet carrier of said first planetary gear set and the ring gear of said second planetary gear set and operable for selecting the one speed in said opposite direction.
Claim 31
Dependent Claim
302 words
The planet pinion of said fourth planetary gear set being rotatably carried by the planet carrier of said second planetary gear set, wherein the sun gears of said first and second planetary gear sets are connected constantly to each other, th sun gears of said third and fourth planetary gear sets are connected constantly to each other, the pinion carrier of said first planetary gear set is connected constantly to the ring gear of said second planetary gear set, the pinion carrier of said second planetary gear set is connected constantly to the ring gear of said third planetary gear set, and the planet carrier of said third planetary gear set is connected constantly to said output shaft; 12. said first clutch being operatively connected between said input shaft and the ring gear of said said first planetary gear set and couplable for selecting the fourth speed in said given direction and the one speed in the opposite dIrection; 13. said second clutch being operatively connected between said input shaft and the sun gears of said first and second planetary gear sets and couplable for selecting the first, second, third and fourth speeds in said given direction; 14. said first brake being operatively connected to the ring gear of said first planetary gear set and operable for selecting the third speed in said given direction; 15. said third brake being operatively connected to the pinion carrier of said second planetary gear set and the ring gear of said third planetary gear set and operable for selecting the second speed in said given direction; and 16. said second brake being operatively connected to the planet carrier of said first planetary gear set and the ring gear of said second planetary gear set and operable for selecting the one speed in said opposite direction.
Claim 32
Dependent Claim
40 words
said first clutch being operatively connected between said input shaft and the ring gear of said said first planetary gear set and couplable for selecting the fourth speed in said given direction and the one speed in the opposite dIrection;
Claim 33
Dependent Claim
40 words
said first clutch being operatively connected between said input shaft and the ring gear of said said first planetary gear set and couplable for selecting the fourth speed in said given direction and the one speed in the opposite dIrection;
Claim 34
Dependent Claim
37 words
said second clutch being operatively connected between said input shaft and the sun gears of said first and second planetary gear sets and couplable for selecting the first, second, third and fourth speeds in said given direction;
Claim 35
Dependent Claim
37 words
said second clutch being operatively connected between said input shaft and the sun gears of said first and second planetary gear sets and couplable for selecting the first, second, third and fourth speeds in said given direction;
Claim 36
Dependent Claim
27 words
said first brake being operatively connected to the ring gear of said first planetary gear set and operable for selecting the third speed in said given direction;
Claim 37
Dependent Claim
27 words
said first brake being operatively connected to the ring gear of said first planetary gear set and operable for selecting the third speed in said given direction;
Claim 38
Dependent Claim
38 words
said third brake being operatively connected to the pinion carrier of said second planetary gear set and the ring gear of said third planetary gear set and operable for selecting the second speed in said given direction; and
Claim 39
Dependent Claim
38 words
said third brake being operatively connected to the pinion carrier of said second planetary gear set and the ring gear of said third planetary gear set and operable for selecting the second speed in said given direction; and
Claim 40
Dependent Claim
37 words
said second brake being operatively connected to the planet carrier of said first planetary gear set and the ring gear of said second planetary gear set and operable for selecting the one speed in said opposite direction.
Claim 41
Dependent Claim
37 words
said second brake being operatively connected to the planet carrier of said first planetary gear set and the ring gear of said second planetary gear set and operable for selecting the one speed in said opposite direction.
References Cited (Backward Citations)
US3282131A
Cited
US3398606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |