Abstract: A manual transmission includes a coaxially arranged input shaft and output shaft, a first intermediate shaft and parallel second intermediate shaft, spaced from the input shaft, a drive side gear pair with a drive gear rotationally fixed on the input shaft and an intermediate gear rotationally fixed on the first intermediate shaft, and an output side gear pair with a second intermediate gear rotationally fixed on the second intermediate shaft and an output gear rotationally fixed on the output shaft, wherein, drive torque is transferred from the input shaft to the output shaft over the drive side gear pair, while no drive torque is transferred over the output side gear pair and, with at least three other switchable gears, drive torque is transmitted from the input shaft to the output shaft over the output side gear pair, while no drive torque is transmitted over the drive side gear pair.

Abstract: A manual transmission includes a coaxially arranged input shaft and output shaft, a first intermediate shaft and parallel second intermediate shaft), spaced from the input shaft, a drive side gear pair a drive gear rotationally fixed on the input shaft and an intermediate gear rotationally fixed on the first intermediate shaft, and an output side gear pair with a second intermediate gear rotationally fixed on the second intermediate shaft and an output gear rotationally fixed on the output shaft, wherein, drive torque is transferred from the input shaft to the output shaft over the drive side gear pair, while no drive torque is transferred over the output side gear pair and, with at least three other switchable gears, drive torque is transmitted from the input shaft to the output shaft over the output side gear pair, while no drive torque is transmitted over the drive side gear pair

Abstract: A modifiable dual clutch transmission is suggested allowing to be manufactured as two transmission variations having an interdependence of fixed wheels and loose wheels that remains at the same position for both variations while the loose wheels belonging to this interdependence are provided with different diameters for providing different transmission ratios. At least one of the loose wheels in that interdependence is correlated to a different forward gear in one transmission variation compared to the other transmission variation. In both transmission variations the loose wheels relating to the respective interdependences are correlated only to even numbered forward gears or to odd numbered forward gears, preserving the advantage of the dual clutch transmission to shift between two adjacent forward gears without interruption in the tractive power.

Abstract: A modifiable dual clutch transmission is suggested allowing to be manufactured as two transmission variations having an interdependence of fixed wheels and loose wheels that remains at the same position for both variations while the loose wheels belonging to this interdependence are provided with different diameters for providing different transmission ratios. At least one of the loose wheels in that interdependence is correlated to a different forward gear in one transmission variation compared to the other transmission variation. In both transmission variations the loose wheels relating to the respective interdependences are correlated only to even numbered forward gears or to odd numbered forward gears, preserving the advantage of the dual clutch transmission to shift between two adjacent forward gears without interruption in the tractive power.

Abstract: In a gearshift device for change-speed gearboxes of motor vehicles, having a shifter shaft (1) movable both axially and radially in the gearbox housing and engaging at one end with an actuating lever arrangement (3) with which in turn corresponding ends of a gearshift linkage or of Bowden gearshift cables engage, substantially parallel to the shifter shaft (1) a supporting pin (6) projecting from the gearbox housing or from a closing plate (2) and having a ball-and-socket joint (7) with only two degrees of twisting freedom is provided, on which is supported a three-armed actuating lever (8), the three arms (9, 10 and 11) of which are disposed perpendicular to each other in the manner of orthogonal axes of coordinates, one of said arms (9) being connected by way of a ball-and-socket joint (12) to a pin (4) projecting radially from the shifter shaft (1) and the two other said arms (10 and 11) being connected by way of their ball-and-socket joints (13 and 14) to the corresponding ends of a gearshift linkage or o

Abstract: In a gearshift device for a motor vehicle manual transmission, comprising a shift finger (6), located on an axially slidable and radially twistable shift shaft (1), which can be brought into engagement with grooves in shift arms of shift forks and which carries a cylindrical guide member (4), movable together with the shift finger, which co-operates with at least one spring-loaded ball catch (8), the cylindrical guide member (4) is formed of sheet material and exhibits a shift gate (9), in the form of a stamped slit, for a stationary shift pin (7), to guide the shifting movement and is provided at the outer circumference with troughs (10) extending parallel to the cylinder axis to latch with a stationary, spring loaded ball catch (8), and a part-cylindrical spring segment (11) is disposed within the cylindrical guide member (4) and is provided with a ramp-like depression (15) which co-operates with the stationary, rotatably mounted shift pin (7) to form a reverse gear shift block.

Abstract: A gear shifting device for change-speed gearboxes having a forward gear and a reverse gear in a common shift plane, including a housing, a shifter rod slidably supported within the housing, a shifter fork having a bridge axially slidable on the shifter rod, and a shifter arm having a selector finger selectively engageable with the shifter fork. The shifter arm moves in a first direction from a neutral position to select the forward gear and in a substantially opposite second direction from the neutral position to select the reverse gear. A first pin and cam connection is provided between the shifter arm and reverse gear so that movement of the selector finger in the first direction of the shift plane from the neutral position engages forward gear while reverse gear is not affected by movement in the first direction.