Patent ID: 7431137
Filing Date: 2008-10-07
Classification: F16D,Y10T

Abstract:
1. A synchronizer ( 1 ) for a manual transmission with first and second idler gears ( 3 , 4 ) rotatably mounted on a transmission shaft ( 2 ); a synchronizer sleeve ( 5 ) is non-rotatably mounted on the transmission shaft ( 2 ) such that the synchronizer sleeve ( 5 ) being axially shiftable, the synchronizer sleeve ( 5 ) being releasably connectable to one of the first and the second idler gears ( 3 , 4 ), via a toothed engagement, and the synchronizer sleeve ( 5 ) comprising a shifting flange ( 6 ) having openings ( 8 ) arranged about a periphery thereof, and first and second synchronizer rings ( 10 , 11 ) which are spaced apart from one another by locking pins ( 9 ) distributed around a periphery of the shifting flange ( 6 ) and inserted through the openings ( 8 ): wherein at least one of the first and the second synchronizer rings ( the double cone ( the inner and the outer coupling rings (