Patent ID: 7882915

Claim:
A wheeled vehicle retractable lateral-motion apparatus that, under the direction of a user, moves a vehicle to which it is mounted in a generally perpendicular direction to a vehicle axis that extends between the front and rear of the vehicle, comprising: a) a mounting plate; b) vehicle attachment means for pivotally fastening said mounting plate to the vehicle; c) retractable vehicle lifting means secured to said mounting plate for elevating the vehicle above a supporting surface and lowering the vehicle back to said supporting surface as directed by the user, wherein said retractable vehicle lifting means retracts from contact with said supporting surface when inactivate and comprises: i) an expandable and contractible gas filled bladder pivotally attached to said mounting plate and ii) resilient means associated with said mounting plate for aiding in the contraction of said expanded bladder; d) lateral-motion inducing means coupled to said lifting means for displacing the vehicle to one side or the other of the vehicle axis while the vehicle is elevated above said supporting surface, wherein said lateral-motion inducing means comprises: i) opposing first and second solenoids secured to said vehicle attachment means and ii) first and second connectors running between said first and second solenoids and said bladder, wherein activation of said first solenoid displaces said bladder in a first lateral direction and activation of said second solenoid displaces said bladder in a second lateral direction and e) control means for expanding and contracting said bladder and activating said first and second solenoids.