Patent ID: 7021638

Claim:
A twist vehicle, comprising: a vehicle frame; a rear wheel assembly rotatably mounted on a rear portion of said vehicle frame; a driving system, which comprises: a transmission member rotatably supported by said vehicle frame wherein said transmission member has a upper control portion positioned above said vehicle frame and a lower driving portion extended underneath said vehicle frame; and a steering member which is connected to said control portion of said transmission member and arranged to drive said driving portion of said transmission member to rotate; and a safety driving arrangement, which comprises: a twisting member, having a predetermined shape, mounted on said driving portion of said transmission member; two spaced apart driving wheels rotatably mounted to said twisting member and defining a driving distance between each said driving wheel and said driving portion of said transmission member; in such a manner that when subsequent clockwise and anti-clockwise movements are imparted to said steering member, said two driving wheels are substantially moving forward, so as to drive said vehicle frame to move; and a safety wheel assembly rotatably supported at a front portion of said vehicle frame with a safety distance between said safety wheel assembly and said driving portion of said transmission member, so as to prevent said twist vehicle from flipping over when said twist vehicle is moving, wherein said twisting member comprises a central hub connected to said driving portion of said transmission member, two wheel shafts rearwardly and radially extended from said central hub to rotatably connect said driving wheels respectively so as to define said driving distance as a length of each of said wheel shafts, and a front wheel arm frontwardly and radially extended from said central hub to connect said safety wheel assembly so as to define said safety distance with a length of said front wheel arm.