Patent ID: 8132822

Claim:
A riding lawn mowing system, comprising: a) a set of two freewheeling castered front wheels and a set of two or more back wheels independently powered and set to run forwards or backwards at its own speed controlling the mowing direction without need for a steering wheel; b) said each of freewheeling castered front wheels attached to an offset shaft at one end and is connected to a vertical pivot axis yoke extending through a lawn mower frame that permits rotation of said offset shaft around a vertical pivot axis in a horizontal plane incorporating a compression and torsion damping wheel suspension system; c) said compression and torsion damping wheel suspension system comprising a larger first hollow tube having internal projections containing a smaller second hollow tube having external projections oriented with respect to each other, thereby creating spaces surrounding said smaller hollow tube; d) a plurality of elastomeric rubber elements being inserted in each of said spaces surrounding said smaller second hollow tube; whereby the elastomeric rubber elements absorb compressive or torsional shock imparted by the freewheeling caster wheel as said riding lawnmower rides over rough landscape terrain, an operator of said riding lawnmower is provided with a comfortable ride even at high cutting speeds, and the power driven back wheels maintain traction without bounce even when the freewheeling castered front wheels encounter resistance or uneven projections on the landscape being mowed.