Patent ID: 8118320

Claim:
A steering mechanism for a push-and-pull vehicle, comprising: a vehicle frame; a turning sleeve; a u-joint for steering, wherein said u-joint may be any form of universal or constant velocity joint; a u-joint bearing fixed on said vehicle frame; a swing pole with a handlebar at the top of said swing pole, wherein said swing pole goes through and is held by said turning sleeve, wherein a bottom end of said swing pole connects to one side or said u-joint and wherein another side of said u-joint links to a vehicle steering mechanism and is held by said u-joint bearing; a swing arm, wherein said tuning sleeve is fixedly connected with said swing arm; and a pivot support for said swing arm on said vehicle frame; wherein the swing arm further comprises a rotating means concentric with a pivot center of the swing arm, wherein said rotating means connects to a coupling mechanism to drive a rear vehicle wheel, the coupling mechanism including an increasing ratio device and a direction-changing mechanism, the direction-changing mechanism driving the rear vehicle wheel forward regardless of the direction of rotation of the rotating means; wherein said handlebar is operable to swing said swing arm back and forth on said swing arm pivot support to rotate said rotating means to drive said vehicle forward and said handlebar is operable to turn left and right in said turning sleeve to steer a steered vehicle wheel.