Patent ID: 8104552
Filing Date: 2012-01-31
Classification: A01D

Abstract:
1. A vehicle, comprising: a chassis; a platform suspended from the chassis; a platform displacement mechanism configured to move the platform, relative to the chassis, between a first position and a second position; a variable drive unit mounted to the platform and comprising an input member movable, relative to a housing of the drive unit, between a first position and a second position; a control lever attached to the chassis and operatively connected to the drive unit, the control lever configured to vary a position of the input member relative to the housing, the control lever movable incrementally between a first position corresponding to the first position of the input member, and a second position corresponding to the second position of the input member; and a control linkage system comprising: wherein, the linkage system is configured to maintain, as the platform is moved between its first and second positions, both a position of the input member relative to the drive unit, and a position of the control link relative to the chassis.