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US 4,223,571 AGranted
Transmission with epicycloidal train
AssigneeRegie Nationale des Usines Renault
InventorsPhilippe Quemerais, Jean Veron
Life of this patent
Estimating the term…
Abstract
A transmission with epicyclic trains which includes four epicyclic trains permitting six forward speed ratios and one in reverse. With this transmission it is possible to obtain, by elimination of elements such as an annulus, brake bands or clutches, combinations of three, four and five forward speed ratios and one in reverse and is applicable to automobiles, buses and industrial vehicles.
Claims8
A transmission with epicyclic trains which comprises:
- a housing;
- a first (PS1), second (PS3) and third (PS4) planet wheel cage disposed within said housing;
- a first (S1) and second (S2) planet wheel connected with said first (PS1) planet wheel cage;
- a third (S3) and fourth (S4) planet wheel connected to said second (PS3) and third (PS4) planet wheel cage, respectively;
- a first (P1) and second (P2) sun wheel connected to said first (S1) and second (S2) planet wheel, respectively;
- a third (P3) and fourth (P4) interconnected sun wheel engaging said second (PS3) and third (PS4) planet wheel cage, respectively;
- a first (C3) and second (C4) annulus drivingly connected to said second (PS3) and third (PS4) planet wheel cage, respectively, said second (C4) annulus interconnecting said second (PS3) and third (PS4) planet wheel cage;
- a first (E2) and second (E3) clutch;
- a first (2), second (3), third (4), and fourth (5) shaft, said first shaft (2) interconnecting said first clutch (E2) to said third (P3) sun wheel, said second shaft (3) interconnecting said first (PS1) and said second (PS3) planet wheel cage, said third (4) shaft interconnecting said second (E3) clutch and said first sun wheel (P1), and said fourth (5) shaft interconnecting said second (P2) sun wheel and said first (C3) annulus;
- an input shaft (1) connected to said first (E2) and said second (E4) clutch and an output shaft (6) connected to said third (PS4) planet wheel cage;
- and
- a first (F3) brake interconnecting said housing and said first (PS1) planet wheel cage for locking said first (PS1) planet wheel cage and a second brake (F4) interconnecting said housing and said fourth shaft (5) for locking said second (P2) sun wheel wherein all shafts under loads are accomplished by transfer of a single coupling action to another single coupling action.
9 more elements
Dependencies are inferred from the claim text.