A compound transmission shift mechanism is disclosed. The shift mechanism includes a plurality of gears configured on at least one transmission shaft with at least one synchronizer configured to engage at least two of the plurality of gears. The shift mechanism includes a control system configured to engage and position the synchronizer into alignment with the at least two of the plurality of gears. Additionally, the shift mechanism includes at least one damping assembly configured on the control system and operatively connected to the synchronizer.

A dual actuation synchronizing clutch assembly including an improved synchronization arrangement is provided. The dual actuation synchronizing clutch assembly has a plurality of operational phases, including initial, synchronization, positioning, engagement, and running phases that vary the torque flow path between the input shaft and output shaft. A synchronizing assembly is provided that includes a synchronizer ring having a first friction surface and synchronizer teeth. A connecting gear includes a lock-up assembly with retractable elements and connecting gear teeth. An output gear includes a second friction surface configured to frictionally engage the first friction surface of the synchronizer ring, and a contoured receiving path with positioning points configured to receive the retractable elements of the lock-up assembly.

A dual actuation synchronizing clutch assembly including an improved synchronization arrangement is provided. The dual actuation synchronizing clutch assembly has a plurality of operational phases, including initial, synchronization, positioning, engagement, and running phases that vary the torque flow path between the input shaft and output shaft. A synchronizing assembly is provided that includes a synchronizer ring having a first friction surface and synchronizer teeth. A connecting gear includes a lock-up assembly with retractable elements and connecting gear teeth. An output gear includes a second friction surface configured to frictionally engage the first friction surface of the synchronizer ring, and a contoured receiving path with positioning points configured to receive the retractable elements of the lock-up assembly.

A method for manufacturing a clutch body for a synchronizing device of a transmission includes the steps of: a) providing an externally toothed clutch disk, b) providing a counterfriction ring, c) applying a friction lining onto the counterfriction ring, d) establishing a non-releasable connection between the clutch disk and the counterfriction ring, and e) upsetting a portion of the counterfriction ring at least partly provided with the friction lining in radially inwardly facing direction, so that a counterfriction cone is formed, which is provided for cooperation with a friction surface of the synchronizer ring.

A dog clutch for an automatic transmission includes a mating clutch that defines a plurality of helical splines and a sliding clutch that defines a plurality of helical splines. The helical splines of the sliding clutch mesh with the helical splines of the mating clutch in an engaged configuration. The dog clutch also includes a synchronizer positioned at the sliding clutch. A related automatic transmission is also provided.

A method and apparatus for producing clutch bodies, which are suitable for synchronizer systems and provided with teeth or tooth sections, from a blank uses and includes at least one embossing stage, composed of embossing segments and an anvil, for embossing roofs and troughs between root and tip circles into an upper face of the blank, and transfer means for transporting the blanks, First embossing segments form a first section and second embossing segments form a second section for sequential embossing within the at least one embossing stage, wherein the first embossing segments first emboss a first section, then return in relation to the second embossing segments, and thereafter the second embossing segments emboss the second section, wherein the second embossing segments are disposed next to each other in an annular arrangement, and the second embossing segments are designed to be axially movable relative to the first embossing segments of the first section.