Abstract: A continuously variable transmission device comprising a variator and a secondary power splitting. For power splitting, a planetary gear set has a first shaft coupled to the transmission input, a second shaft of the gear set coupled a first shaft of the variator, and a third shaft of the gear set couples a second shaft of the variator. First and second shift elements are provided to switch between first and second gear ratio ranges. Via the variator, the gear ratio is continuously variable within the gear ratio range and the two gear ratio ranges overlap. To implement the first gear ratio range, the second shaft of the gear set is connected, via the first shift element, to the transmission output, and to implement the second gear ratio range, the third shaft of the planetary gear set is connected, via the second shift element, to the transmission output.

Abstract: A transmission device (1) for a vehicle having a variator (3) that has an axially longer length that the variator (3) is wider and deeper. The variator (3) comprises a planetary gear set (4), a manual gearbox unit (9) and a hydraulic system having an oil sump. Following installation in the vehicle, a longitudinal extension of the variator (3) is oriented at least approximately horizontally.

Abstract: A transmission device for a vehicle (1) having a variator (3), which is configured as a hydrostatic device, of a transverse axial construction that can be adjusted at least in the region of a pivot axis (11), a planetary gear set (4) and a manual gear unit (9). The orientation of the pivot axis (11) of the variator (3), following installation in the vehicle, at least approximately corresponds to the orientation of a vehicle vertical axis (16).

Abstract: A method and a device for actuating a motor vehicle clutch device (4). A control device (12) automatically influence the frictional power of the clutch device (4) in accordance with predetermined criteria (19) by varying the continuously variable ratio of a vehicle transmission (2).

Abstract: A synchronizing device (2) is proposed for torque-transmitting connection of two rotary parts of a shift transmission, in particular for connecting a transmission shaft (4) with gearwheel (6, 8) rotatably supported on the transmission shaft (4). A synchronizer sleeve (30) has an outer disc carrier (36) connected with a gearshift device (64) and an inner disc carrier (34). A set of discs (40) is provided between the disc carriers (34, 36). The adjacent discs of the set of discs (40) are alternatively connected either with the inner disc carrier (34) or with the outer disc carrier (36). When the speed of rotation of the outer disc carrier (36) differs from that of the inner disc carrier (34), the discs allow a synchronization moment. For that purpose the outer disc carrier (36) has a device (62) for form-fittingly connecting the outer disc carrier (36) with a device (60, 76) on the gearwheel (6, 8).

Abstract: The invention concerns gearshift transmissions with a lock synchronization arrangement in which one synchronizer member, connected with a transmission shaft and at least one gear wheel rotating at a different speed, can be coupled together during synchronous speed by means of an annular sliding sleeve axially movable by a gearshift force. Coupling teeth of the sliding sleeve mesh with corresponding coupling teeth of each rotating gear wheel or of a clutch member connected with each rotating wheel. Between the sliding sleeve and each rotating gear wheel is situated one synchronizer ring, parts of said synchronizer ring forming, with parts connected with the gear wheel or provided thereon, a positively engaged coupling. In the absence of synchronism, the axial movement of the sliding sleeve is locked by blocking surfaces of locking teeth. The coupling teeth are stub-ended coupling teeth which are dampened by elastic elements.

Abstract: The invention concerns a transmission shift system with a synchronizing arrangement. A rotary shaft and a gear rotating at different speeds can be coupled together with positive engagement at synchronous speed, by means of an annular sliding sleeve axially movable by a gearshift force, wherein a clutch gearing of the sliding sleeve meshes in a corresponding clutch gearing of the gear or of a clutch body connected with the gear. Between the sliding sleeve and the gear is situated a synchronizer ring. Parts of the gear or of the clutch body together with parts of the synchronizer ring form a positively engaged clutch. In the absence of synchronism, the axial movement of the sliding sleeve is locked by blocking faces of a locking device, the clutch gearing (4, 12) and the locking device (8, 16) being separated from each other. The clutch gearing (4) of the sliding sleeve (6) and the clutch gearing (12) of the gear or clutch body (14) have stub ends.

Abstract: The invention concerns a gear-changing device for a transmission, in particular a toothed gear system. During switching operations two gear stages of a gear group should not be simultaneously engaged. According to the invention this is prevented by the fact that a slider-crank mechanism (4) (oscillating cranks and a slide rod (1)) are moved from a stationary rest position to their switching position. The rest position is urged by coupling mechanisms (6). A driving position is established with the slide rod (1). In order to prevent two speeds from being simultaneously switched during a faulty operation, the distances between the rest positions and between the driving position (FIG. 1 ) of the coupling mechanisms (6) differ.

Abstract: A gearshifting arrangement for actuating motor vehicle multi-speed transmissions wherein an electromotive actuation takes place, it being essential that only one electric motor (1) connected with only one cam transmission (4) and only one gearshifting element are provided for actuating all gearshifting sets. The gearshifting element is a connecting rod (5) capable of moving parallel to the axis of the transmission wheels and in which are provided individually actuatable coupling mechanisms (11) respectively associated with a gearshifting lever. The electric motor (1), the spatial cam transmission (4) and the connecting rod (5) are coaxially arranged whereby a very simple and space-saving embodiment is achieved.

Abstract: In a motor vehicle transmission, in particular a multi-speed synchronized countershaft transmission, each two speeds are associated with one among several gearshift sets (28, 29). It is essential that the two speeds (1st and 3rd or 2nd and 4th) associated with each gearshift set are not successive speeds. The great advantage here is that the gearshifting thus obtained is a "shifting-shifting" system which makes it possible to carry out overlapping actuating operations and thus a reduction of the time interval between gearshifts. At certain speeds, several gearshift sets or synchronizing mechanisms can be simultaneously loaded whereby the load of the individual gearshift sets (28, 29) is substantially reduced. Great advantages such as shorter gearshifting times, longer service life of the synchronizing sets and smaller gearshift sets may thus be obtained.

Abstract: A system for shifting gears in a multi-speed motor vehicle transmission in which a single gearshifting element, in the form of a connecting rod (1), is moveable in a direction parallel to the rotational axis (33) of the transmission (T) gears (31). A plurality of individually actuatable coupling mechanisms (4, 4', 4', 18), upon actuation, selectively couple corresponding gearshifting levers (12, 12') with the connecting rod. The gearshifting levers (12, 12') are, in turn, operably connected to gearshifting sleeves (30, 30') of the transmission (T). When a coupling mechanism is individually activated, the corresponding gearshifting lever is pivoted by the connecting rod (1) for selectively engaging or disengaging a corresponding gear of the transmission, via the corresponding gearshifting sleeve (30, 30').