F - Mech Eng,Light,Heat,Weapons – 16 – D
Patent
F - Mech Eng,Light,Heat,Weapons
16
D
74/184
F16D 23/02 (2006.01) F16D 23/06 (2006.01)
Patent
CA 1076392
C-2850 SYNCHRONISER ARRANGEMENTS FOR STEPPED-RATIO TRANSMISSIONS Abstract of the Disclosure A synchroniser arrangement for bringing first and second rotary members of a stepped-ratio transmission (for example, a gearbox mainshaft and a constant-mesh gear that is rotatably mounted on the mainshaft) into rotary synchronism. A primary synchroniser element (for example, a synchro ring) is drivable by the first rotary member and is axially movable into frictional engagement with an intermediate element (for example, a primary synchronising cone) to thereby develop at the inter- mediate element, by the cooperation of respective friction surfaces, a synchronising drag torque component which by the action of a pair of cooperating ramp surfaces-possibly with interposed friction-reducing rollers-produces axial movement of the intermediate element to provide a clamping action at a pair of opposed radially extending annular friction-clutch surfaces of a secondary synchroniser element that is of higher torque-inducing capacity than the primary element, to provide an additional synchronising drag torque component which performs the major contribution in bringing the first and second rotary members of the stepped-ratio transmission into rotary synchronism.
303353
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