Patent ID: 9309097
Filing Date: 2016-04-12
CPC Classification: B66F

Claim Text:
1. A forklift truck comprising: a linkage system for movement of load carrying means; and a base frame, wherein said linkage system comprises: a moveable means contained within a channel; a first link arm pivotally connected to the moveable means at a first pivot point and a connecting link member at a second pivot point; a second link arm pivotally connected substantially near a midpoint of the first link arm at a third pivot point and at a fixed point relative to the channel substantially near a centerline of the channel at a fourth pivot point; a third link means pivotally connected to the second link arm at a fifth pivot point and to the connecting link member at a sixth pivot point at the opposite end, wherein the second pivot point connecting the first link arm to the connecting link member is configured to have a travel path that remains substantially perpendicular to the channel when the linkage system is moved between a retracted and extended position and the angle through the second pivot point connecting the first link arm to the connecting link member and the sixth pivot point connecting the third link arm to the connecting link member is configured to remain substantially constant in relation to the channel when the linkage system is moved between a retracted and extended position; and a wheel stabilization mechanism, wherein the wheel stabilization mechanism is located at or adjacent the front end of the forks of the forklift and the wheel stabilization mechanism comprises at least one wheel movably connected to a pivot assembly which is mounted such that the axis of rotation of the wheel is parallel to the axis o rotation of the pivot assembly and at least one wheel is mounted such that the axis of rotation of the wheel is perpendicular to the first wheel and to the axis of rotation of the pivot assembly.