Patent ID: 6571927
Filing Date: 2003-06-03
Classification: F16D

Abstract:
A multispeed transmission having a synchronizer comprising:first and second cones in spaced relationship from one another and rotatable about a common axis; a shift collar interposed between said first and second cones and rotatable about and slidable along said axis to and from a neutral position, said shift collar having apertures therethrough with engaging surfaces; a set of pins extending from said first cone through said apertures, said set of pins having small diameter surfaces adjacent said first and second cones and large diameter surfaces having opposing sides and positioned substantially centrally along said small diameter surfaces, and first and second blocking surfaces positioned on each of said sides of said large diameter surfaces respectively; and said engaging surfaces being engageable with said first blocking surface and sliding said second cone before engaging said second blocking surfaces, and said engaging surfaces being engageable with said second blocking surfaces and sliding said first cone before engaging said first blocking surfaces.