Synchronizer assembly

Claim 1

IN A SYNCHRONIZER MECHANISM; A TORQUE TRANSMITTING MEMBER; A ROTATABLE PART ADJACENT SAID TORQUE TRANSMITTING MEMBER; A SYNCHRONIZER ELEMENT DRIVINGLY CONNECTED TO SAID TORQUE TRANSMITTING MEMBER; A CLUTCH SURFACE ON SAID ROTATABLE PART; A CLUTCH SURFACE ON SAID SYNCHRONIZER ELEMENT, SAID SURFACES BEING ENGAGEABLE TO ESTABLISH A FRICTIONAL DRIVING CONNECTION BETWEEN SAID MEMBER AND SAID ROTATABLE PART, SAID SYNCHRONIZER ELEMENT BEING SHIFTABLE AXIALLY TO ENGAGE SAID SURFACES; A SLEEVE ENCIRCLING SAID MEMBER AND DRIVINGLY CONNECTED THERETO; ENGAGEABLE MEANS ON SAID ROTATABLE PART; ENGAGEABLE MEANS ON SAID SLEEVE, SAID SLEEVE BEING SHIFTABLE AXIALLY TO ENGAGE SAID ENGAGEABLE MEANS AND ESTABLISH A POSITIVE DRIVING CONNECTION BETWEEN SAID MEMBER AND SAID ROTATABLE PART; A PLURALITY OF THRUST ELEMENTS INTERPOSED BETWEEN SAID SLEEVE AND SAID MEMBER AND IN ENGAGEMENT WITH SAID SYNCHRONIZER ELEMENT; MEANS FIXED TO SAID THRUST ELEMENTS ENGAGED BY SAID SLEEVE TO PROVIDE AN AXIAL THRUST TRANSMITTING ASSOCIATION BETWEEN SAID THRUST ELEMENTS AND SAID SLEEVE; MEANS URGING SAID THRUST ELEMENTS RADIALLY OUTWARDLY TO YIELDINGLY ESTABLISH SAID THRUST TRANSMITTING ASSOCIATION; AND RETAINING MEANS ON SAID THRUST ELEMENTS EXTENDING THEREFROM AND ENGAGING WITH SAID MEMBER TO LIMIT RADIAL OUTWARD MOVEMENT OF SAID THRUST ELEMENTS AND SAID MEANS FIXED THERETO TO THEREBY RETAIN SAID THRUST ELEMENTS IN OPERATIVE ASSOCIATION WITH SAID MEMBER.