Abstract: A multi-stage transmission comprises planetary gearsets (P1, P2, P3, P4), shafts and shift elements. The carriers of gearsets (P1, P2) couple via shaft (4) which couples the sun gear of gearset (P3). The ring gear of the gearset (P1) couples the sun gear of gearset (P2) via shaft (8), which couples drive shaft (1) via clutch (18). The sun gear of gearset (P1) couples housing (G) by shaft (3) via brake (03), and shaft (1) via clutch (13). The ring gear of gearset (P2) couples housing (G) by shaft (5) via brake (05). The sun gear of gearset (P4) couples housing (G). Shaft (6) couples shaft (1) via clutch (16) and carrier of gearset (P3). Shaft (9) couples shaft (4) via clutch (49) and the ring gear of gearset (P4). Output shaft (2) couples the ring gear and the carrier respectively of gearsets (P3, P4).

Abstract: An arrangement for planetary gearsets comprises at least simple radially inner and radially outer planetary gearsets each comprising a sun gear, a ring gear and a carrier that carries planetary gears. The two gearsets are coaxially aligned and one of the gearsets is radially nested inside the sun gear of the other gearset. The ring gear of the radially inner gearset and the sun gear of the radially outer planetary gearset are at least coupled to one another in a rotationally fixed and are connected to a common carrier by driving teeth. To achieve a simple and inexpensive production, the ring gear of the radially inner gearset and the sun gear of the radially outer gearset are first produced as separate components with different heat treatments and then the ring and the sun gear are connected together by one of a friction force locking, a form interlocking and/or positive bonding.

Abstract: A multi-speed transmission having four gearsets, eight shafts and six shifting elements. The sun gear of gearset (P2) couples, via shaft (5) and brake (05), the housing (G), and, via clutch (15) the drive shaft. The carriers of gearsets (P2, P3) communicate, via shaft (4) and brake (04), with housing (G), and the sun gear of gearset (P3) communicates, via shaft (8) and clutch (18), with the drive shaft. The ring gears of gearsets (P2, P3) communicate, via shaft (6), with the ring gear of gearset (P4) and the sun gear of gearset (P1). The ring gear of gearset (P4) and the sun gear of gearset (P1) are connected with one another. The sun gear of gearset (P4) communicates, via shaft (3) and brake (03), with housing (G). The carriers of gearsets (P1, P4) communicate, via shaft (7) and clutch (17), with the drive shaft and the output shaft couples the ring gear of gearset (P1).

Abstract: The multi-ratio transmission with forward and reverse gears, gearsets (P1, P2, P3, P4), shafts and shifting elements. A sun gear of the gearset (P1) directly couples an input shaft, which couples, via clutch (14), shaft (4) and, via clutch (17), shaft (7). Shaft (4) couples the carrier of gearset (P2) and the ring gear of gearset (P3) and couples, via brake (04), a housing. Shaft (7) couples the sun gear of gearset (P4) and, via clutch (78), shaft (8), which couples the sun gears of gearsets (P3, P2). Shaft (3) couples the carrier of gearset (P1) and the ring gear of gearset (P2) and, via brake (03), the housing. Shaft (5) couples the ring gear of gearset (P1) and, via brake (05), the housing. Shaft (6) couples the carrier of gearset (P3) and the ring gear of gearset (P4). The output shaft couples the carrier of gearset (P4).

Abstract: A transmission comprising four planetary gear sets, eight shafts and six shift elements. The sun gear of gear set (P1) is fixed via brake (04), the carrier of gear set (P1) is fixed via brake (03) and the drive via clutch (13), and shaft (6) via clutch (36). Sixth shaft (6) is connected to the ring gear of gear set (P2) and the sun gear of gear set (P4), the drive is connected to the sun gear of gear set (P2) and is connectable to the carrier of gear set (P3). Seventh shaft (7) is connected to the ring gear of gear set (P1) and the carrier of gear set (P2), and is connectable to the sun gear of gear set (P3). The ring gear of the fourth gear set (P4) is connectable to the housing via brake (05). The output is connected to the ring gear of third gear set (P3) and the carrier of fourth gear set (P4).

Abstract: A multi-ratio transmission comprising four planetary gearsets, eight rotary shafts and six shifting elements including first, second, third and fourth clutches and first and second brakes. The shafts either directly couple or selectively couple, via the shifting elements, the gearsets to each other or a housing of the transmission so as to implement nine forward gears and one reverse gear.

Abstract: A multi-stage transmission with nine forward gears and one reverse gear comprising four planetary gear sets, eight rotatable shafts and six shift elements. The sun gear of the first set is connected to fourth shaft which is couplable to a housing by the first brake, the carrier of the first set is connected to the third shaft, which is coupled to the housing by the second brake, which is detachably connectable to the drive shaft, via the first clutch, and via a second clutch is detachably connectable to the seventh shaft. The seventh shaft is connected to the ring gear of the second set and with the sun of the fourth set, and the drive shaft is connected to the sun of the second set and to the carrier of the third set. The sixth shaft is connected to the ring gear of the first set, the carrier of the second set and the sun gear of the third set. The ring gear of the fourth set is connected to the fifth shaft which can be coupled to the housing via the third brake.

Abstract: A multi step transmission comprises planetary gearsets (P1, P2, P3, P4), shafts and shift elements. The sun gear of gearset (P1) couples housing (G). The carrier of gearset (P1) couples shaft (3), which couples housing (G) via brake (03), drive shaft (01) via clutch (13), and shaft (5) via clutch (35). Shaft (5) operatively couples the sun gear of gearset (P3) and couples the ring gear of gearset (P2) and the sun gear of set (P4). Shaft (1) couples, via clutch (17), shaft (7), which couples the sun gear of gearset (P2), and operatively couples the carrier of gearset (P3). Shaft (6) couples the ring gear of gearset (P1) and the carrier of gearset (P2) The ring gear of gearset (P4) couples shaft (4), which couples housing (G) via brake (04), and output shaft (2) couples the ring gear of gearset (P3) and the carrier of set (P4).

Abstract: A multi step transmission comprising planetary gearsets (P1, P2, P3, P4), shafts and shift elements. The sun gear of gearset (P1) couples drive shaft (1). The carrier of set (P1) couples shaft (3), which couples housing (G) via brake (03), shaft (1) via clutch (13) and shaft (6) via clutch (36). Shaft (6) couples the ring and sun gear of gearsets (P2 P3) respectively, and, via clutch (68), shaft (8), which couples the carrier of gearset (P4). Shaft (1) couples the carrier of gearset (P4). Shaft (7) couples the ring gear of gearset (P1) and the carrier of set (P2). The sun gear of gearset (P4) couples shaft (4), which couples housing (G) via brake (04). The ring gear of gearset (P3) couples shaft (5), which couples housing (G) via brake (05). Output shaft (2) couples the carrier of gearset (P3) and the ring gear of gearset (P4).

Abstract: A multi step transmission comprising planetary gearsets (P1, P2, P3, P4), shafts and shift elements. The sun gear of gearset (P1) couples shaft (4) which couples housing (G) via brake (04). The carrier of gearset (P1) couples shaft (3), which couples housing (G) via brake (03), drive shaft (1) via clutch (13), and shaft (6) via clutch (36). Shaft (6) couples the ring gear of gearset (P2) and the sun gear of set (P4), and, via clutch (68), shaft (8), which couples the sun gear of gearset (P3). Shaft (1) couples the sun gear of gearset (P2) and the carrier of set (P3). Shaft (7) couples the ring gear of set (P1) and the carrier of gearset (P2). The ring gear of set (P4) couples shaft (5) which couples housing (G) via brake (05). Output shaft (2) couples the ring gear and carrier of gearsets (P3, P4) respectively.

Abstract: A multi speed transmission comprising planetary gearsets (P1, P2, P3, P4), shafts and shift elements. The sun gear of gearset (P1) couples shaft (4) which can couple housing (G) via brake (04) and the carrier of set (P1) couples shaft (3) which can couple housing (G), via brake (03), and drive shaft (1) via clutch (13), and shaft (6) via clutch (36). Shaft (6) couples the ring gear of gearset (P2) and the sun gears of gearsets (P3, P4). Shaft (1) couples the sun gear of gearset (P2) and is operatively connected to the carrier of gearset (P3). Shaft (7) couples the ring gear of set (P1) and the carrier of gearset (P2). The ring gear of gearset (P4) couples shaft (5) which can couple housing (G) via brake (05) and output shaft (2) operatively couples the carrier of gearset (P4) and the ring gear of gearset (P3).

Abstract: A multi step transmission comprising four planetary gear sets, shafts, and shift elements, the sun gear of gearset (P1) couples shaft (4) which couples housing (G) via brake (04), the carrier of gearset (P1) couples shaft (3) which couples housing (G) via brake (03), and drive shaft (1) via clutch (13), and shaft (6) via clutch (36). Shaft (6) couples the ring gear of gearset (P2) and is operatively connected to the sun gear of gearset (P4). Shaft (1) couples the sun gear of gearset (P2) and the carrier of gearset (P3). Shaft (5) couples the ring gear of gearset (P1), the carrier of gearset (P2), and the sun gear of gearset (P3). The ring gear of gearset (P4) couples housing (G). Output shaft (2) detachably couples shaft (7), which couples the ring gear of gearset (P3), via clutch (27), and operatively couples the carrier of gearset (P4).

Abstract: A transmission comprising gear sets (P1, P2, P3, P4), eight shafts and six shift elements. Sun gear of set (P1) couples the drive shaft, the carrier of set (P1) is connected to shaft (3) which couples a housing, via a first brake, and couples the drive shaft and shaft (5) respectively via clutches. Shaft (5) couples the ring gear of set (P2), the sun gears of sets (P3, P4), and the drive shaft couples the carrier of set (P4). Shaft (6) couples the ring gear of set (P1) and the carrier of set (P2). Sun gear of set (P2) is connected to shaft (4) which couples a housing, via a brake. Ring gear of set (P3) couples the housing, the output shaft couples, via a clutch, shaft (7) which couples the ring gear of set (P4), and, via another clutch, shaft (8) which couples the carrier of set (P3).

Abstract: A multi-stage transmission with nine forward gears and one reverse gear comprising four planetary gear sets, eight rotatable shafts and six shift elements. The sun gear of the first set is connected to fourth shaft which is couplable to a housing by the first brake, the carrier of the first set is connected to the third shaft, which is coupled to the housing by the second brake, which is detachably connectable to the drive shaft, via the first clutch, and via a second clutch is detachably connectable to the seventh shaft. The seventh shaft is connected to the ring gear of the second set and with the sun of the fourth set, and the drive shaft is connected to the sun of the second set and to the carrier of the third set. The sixth shaft is connected to the ring gear of the first set, the carrier of the second set and the sun gear of the third set. The ring gear of the fourth set is connected to the fifth shaft which can be coupled to the housing via the third brake.

Abstract: A bearing arrangement for a shaft, particularly a driveshaft (1) in a transmission housing (5) of an automatic transmission with an actuating piston (6) of a shifting element arranged inside the shaft. At least one self-sealing bearing is provided at least on the side of the transmission housing (5) remote from the motor to support the shaft.

Abstract: An arrangement comprising at least one dog clutch which is shiftable for coupling and decoupling a shaft and a component at a transmission. An actuating piston (5) is disposed axially movable, at least to some extent, within the shaft for moving a shifting claw (9) of the dog clutch into a disengaged state and an engaged state. The actuating piston (5) can be pressurized, on both sides, with a pressurizing medium so that the actuating piston (5) can be hydraulically actuated in both directions of movement.

Abstract: A gear set arrangement for a planetary transmission comprising at least first and second simple planetary gear sets, each having sun and ring gears and a carrier supporting planetary gears. The gear sets are coaxially nested with the first gear set being radially within the sun gear of the second gear set in a common radial plane or radial planes which are only slightly axially offset. The ring gear of the inner first gear set and the sun gear of the outer second gear set, and the carriers of the two gear sets, are coupled in a fixed manner. To avoid forced movement of the gears, only one of the sun gear, the ring gear or the carrier, of each of the first and the second gear sets is radially supported substantially free of radial play on a centrally disposed transmission shaft or with respect to a centered supported component.

Abstract: An arrangement which comprises at least one claw clutch that can be connected to at least one component of a transmission, such that the claw clutch is arranged substantially within a bearing support (1) of the transmission.

Abstract: A lubrication device for a planetary transmission with a plurality of planetary gearsets in which a ring gear carrier, which supports a ring gear of a first planetary gearset, is connected to a planetary gear carrier which supports a plurality of planetary gears of an adjacent, second planetary gearset, and in which a lubricant supply for the planetary gears of the second planetary gearset is provided. To provide an inexpensive, simply designed and reliable lubricant supply to the planetary gears of the web carrier coupled to the ring gear of the other planetary gearset, the ring gear is sealed relative to the ring gear carrier of the first planetary gearset and relative to the planetary gear carrier of the second planetary gearset.

Abstract: The invention concerns a multi-step transmission with at least 7 forward gears, with which transmission on the input drive shaft (1), two non-shiftable input-side gear sets (RS1, RS2) are provided, which, on their output-side produce two speeds of rotation (n1, n2), which, besides the speed of rotation of the input drive shaft (1), by selective closure of the shift elements (A, B, C, D, E) are shiftable in such a manner to one of the output-side planetary gear sets (RS3, RS4) which upon the output drive shafts (2), that for the shifting from one into the respective next following higher or lower gear of the two activated shift elements, respectively, only one shifting element must be open and a further element closed.