Abstract: A flexible skateboard may include a pair of direction casters mounted for steering rotation on a flexible skateboard, twistable for propulsion. One or more vertical wall supports may be provided to resist bowing. Centering spring arrangements including range or rotation limitations such as hard stops may be included. One or two dual wheel assemblies may be exchanged for the single wheel assemblies for ease or riding or learning how to ride. One piece skateboard bodies may be formed by rigidly connecting together multiple pieces of the same or similar wooden or plastic molded parts to form a bridge like connecting member having increased structural rigidity and strength for its weight.

Abstract: A flexible skateboard may include a pair of direction casters mounted for steering rotation on a twistable one piece skateboard with a multi-arm spring return assembly using pivoting stops associated with the wheel fork and non-pivoting stops mounted to the skateboard. Centering spring arrangements including range or rotation limitations such as hard stops are included. One or two dual wheel assemblies may be exchanged for the single wheel assemblies for ease or riding or learning how to ride. One piece skateboard bodies are formed by rigidly connecting together multiple pieces of the same or similar plastic molded parts to form a bridge like connecting member having increased structural strength for its weight.

Abstract: A flexible riding board may include a front fork assembly for pivotal rotation about a front axis, the front fork assembly including a single front wheel mounted for rolling rotation about a front axle offset from the front axis; a rear fork assembly for pivotal rotation about a rear axis including a single rear wheel mounted for rolling rotation about a rear axle offset from the rear axis; and a flexible, one piece molded plastic platform having a neutral plane and supported by the front fork assembly with the front axis at a first acute angle to the neutral plane and supported by the rear fork assembly with the rear axis at a second acute angle to the neutral plane, the platform twistable by a rider to pivot the rear wheel about the rear axis so that the riding board is propelled in a forward direction, wherein the front fork assembly is pivotable about the front axis by the rider to steer the riding board.

Abstract: A scooter with a combination front fender and brake includes a frame, front and rear wheels mounted to the frame for rotation, a front fork assembly rotatable by a rider to steer the scooter, a pivot in the front fork assembly, a fender mounted for rotation on the pivot and a brake control lever assembly for causing the fender to rotate into contact with the front wheel to cause a braking action.

Abstract: A skateboard may include a pair of foot support boards connected by a torsion bar connecting element, a torsion bar cover tube mounted to the foot support boards and surrounding at least a portion of the torsion bar connecting element and an outer tube mounted for rotation around the torsion bar cover tube in response to contact with an obstacle. One or more bushings supporting the outer tube on the torsion bar cover for rotation. The skate board may include a tube mounted for rotation on a connecting element between the foot support areas. A method of skateboarding may include providing a skateboard having a longitudinal axis running between a pair of foot support areas and providing a tube mounted for rotation about the longitudinal axis between the foot support areas in response to contact with an obstacle.