Patent ID: 6951523
Filing Date: 2005-10-04
Classification: F16H

Abstract:
1. A reversible transmission comprising: a support frame including top and bottom surfaces; an elongate drive shaft being supported by said frame, said drive shaft having input and output end portions extending outwardly from said top and bottom surfaces, said drive shaft having a longitudinal axis, said drive shaft including a wedge adjacent to said output end portions; an elongate idler shaft supported by said frame and spaced subjacent to said drive shaft, said idler shaft having a longitudinal axis extending substantially parallel to the longitudinal axis of said drive shaft, said idler shaft having one end portion extending outwardly from said top surface of said frame; a drive mechanism being operably connected to said drive and idler shafts respectively and having an input for causing same to rotate in a first direction about said respective longitudinal axis thereof; means for governing the rotational direction of said drive shaft and being operably connected to said drive mechanism and for causing said drive shaft to accelerate in the first direction to thereby cause said idler shaft to rotate at a relative speed, said governing means cooperating with said drive mechanism for causing said drive shaft to reach an idle stage and thereafter causing said drive shaft to rotate in a second direction after same accelerates from the idle stage; and a sprocket operably connected to said output end portion of said drive shaft and rotating in the same direction thereof; wherein said wedge cooperates with said sprocket and said drive mechanism for selectively preventing rotational movement of said drive shaft when the direction of rotation is changed.