Patent ID: 6073506
Filing Date: 2000-06-13
Classification: F16H,Y10T

Abstract:
A change-gear system comprising:(a) a housing;(b) at least two spaced countershafts having parallel axes and mounted for rotation within said housing, said countershafts each having a fixed axis of rotation with respect to said housing;(c) a plurality of groups of gears on said countershafts, each group being comprised of countershaft gears of identical gear tooth count;(d) rotationally interlocked means for providing input power for each of said countershafts;(e) torsionally resilient means to transmit rotational energy from said rotationally interlocked means to each of said countershafts;(f) a driven gear driveable from each group of said countershaft gears;(g) output means having a fixed axis of rotation with respect to said housing;(h) each said driven gear rotatably mounted on said output means;(i) gear tooth backlash being provided within assembled said change-gear system;(j) means for selectively clutching said output means to one of said driven gears at a time for selectively establishing a driving relationship from said countershafts through one group of said countershaft gears at a time, thence to and through said driven gear driveable from said one group for effecting driving of said output means.