Patent ID: 7845250
Filing Date: 2010-12-07
Classification: F16D,Y10T

Abstract:
1. A transmission apparatus, said apparatus comprising: a rotatable drive shaft having a first and a second end, said second end of said drive shaft defining a taper and a first portion of a dogtooth device; said first portion of said dogtooth device being a face shift having a face tooth; a rotatable driven shaft having a first and a second extremity, said driven shaft being selectively driven by said drive shaft, said driven shaft defining a spline; a slider drivingly cooperating with said spline, said slider being slidably secured to said driven shaft; a second portion of said dogtooth device secured to said slider; said second portion of said dogtooth device being a face shift having a further face tooth such that selective engagement of said first and second portions of said dogtooth device is permitted; a synchro ring defining a tapered bore, said ring being anchored within said slider such that when said slider is moved towards said taper of said drive shaft, said tapered bore of said ring cooperates with said taper of said drive shaft so that said ring and said slider anchored thereto are rotated and so that said first and second portions of said dogtooth device engage such that said driven shaft is driven by said drive shaft and such that harsh face tooth engagement/loading of said face tooth and said further face tooth is avoided so that a hybrid combination of said dogtooth device and said synchro ring minimizes shock loading and harsh engagement between said slider and said drive shaft; said slider defining a groove which is disposed coaxially relative to said driven shaft; a fork shift which slidably cooperates with said groove for selectively moving said slider axially relative to said second end of said drive shaft; and a key disposed between said slider and said ring such that when said slider is moved towards said second end of said drive shaft, said key presses said tapered bore of said ring against said taper of said drive shaft.