Patent ID: 8733523

Claim:
Gear-synchronization device with at least one synchronization hub arranged on a shaft, on which synchronization hub in opposite axial direction at least one synchronization ring is arranged, at least one gear wheel arranged on the shaft, at least one friction package, which is arranged underneath the synchronization ring and in active connection therewith, as well as at least one slip coupling arranged over the hub, wherein between the gear wheel and the synchronization ring a coupling body is arranged and wherein the synchronization hub comprises at least one recess, in which at least one spring-loaded power assist element is arranged, wherein the at least one power assist element has a basic body, which has a height measured in a radial direction and—as viewed in plan view—a longitudinal extension and a width extension measured in the axial direction, and the longitudinal extension is measured in the circumferential direction of the synchronization hub, is greater than the height or the width extension and has two distal end sections lying opposite one another in the direction of the longitudinal extension, on which respectively a functional face is formed, which cooperate in the installed position with the synchronization hub in the fitted state, wherein the functional faces are designed to be inclined in opposite direction, diametrically opposite one another, and relative to the longitudinal extension, or are offset along a longitudinal middle axis in the direction of the longitudinal extension of the basic body and are designed to be at least approximately parallel to one another, and wherein the functional faces are oriented respectively at an acute angle to the greatest longitudinal extension of the basic body, wherein the basic body has its greatest longitudinal extension on a rear side in the axial direction, wherein the at least one friction package comprises an outer cone ring and an inner cone ring, wherein on the cone rings on corresponding cooperating surfaces friction linings are provided, wherein the synchronization ring has a locking toothing on the outer circumference, and wherein the power assist element is coupled to the inner cone ring of the friction package and bears against the synchronization ring in a non-engaging manner.