Patent ID: 7334493

Claim:
A device for reduction of axial movement of a main shaft gear ( 2 ) in a transmission with at least two countershafts in which the main shaft gear ( 2 ) is axially restrained on a main shaft ( 10 ) between first and second washer discs ( 4 , 3 ), the device comprising: a spring element ( 6 ) and a ring disc ( 5 ) arranged on the main shaft ( 1 ) between a first washer disc ( 4 ) of the first and the second washer disks ( 4 , 3 ) and the main shaft gear ( 2 ), wherein an axial thickness of the first washer disc ( 4 ) is reduced in an outer circumferential region concentric with the main shaft ( 1 ) and on a side of the first washer disc ( 4 ) facing toward the main shaft gear ( 2 ), the spring element ( 6 ) and the ring disk ( 5 ) are concentric with the main shaft ( 1 ) and the spring element ( 6 ) and at least a portion of the ring disk ( 5 ) are located in the circumferential region of the reduced thickness of the first washer disc ( 4 ) with the spring element ( 6 ) arranged between the first washer disc ( 4 ) and the ring disc ( 5 ) so that the spring element ( 6 )is axially restrained by the first washer disc ( 4 ), and the spring element ( 6 ) resiliently biases the ring disc ( 5 ) against the main shaft gear ( 2 ) and the main shaft gear ( 2 ) against the second washer disc ( 3 ) thereby resiliently restraining axial movement of the main shaft gear ( 2 ) along the main shaft ( 1 ).