Patent ID: 6988426
Filing Date: 2006-01-24
Classification: F16H,Y10T

Abstract:
1. A countershaft transmission for use with a power source, the countershaft transmission comprising: an input member driveably connected to the power source; at least one directional clutch assembly structured and arranged to be selectively engageable with the input member; at least one speed clutch assembly structured and arranged to be selectively engageable with the at least one directional clutch assembly; a dual range assembly structured and arranged to be selectively engageable with the at least one speed clutch assembly; and an output member selectively engageable with the dual range assembly, wherein a rotational speed of the input member is transformed to a rotational speed of the output member through the dual range assembly, the rotational speed of the output member being one of a plurality of first speeds within a high speed range or one of a plurality of second speeds within a low speed range, wherein the countershaft transmission is configured such that, in response to an incremental speed selection of the output member, only one of the at least one directional clutch assembly or only one of the at least one speed clutch assembly is modified to cause a change in the speed of the output member between all consecutive speeds within the high speed range or within the low speed range.