Patent ID: 7413200

Claim:
A skateboard truck, comprising: a kingpin consisting of a head portion, a body portion, and a plurality of kingpin threads, a base consisting of a flat portion through which exist two or more attachment holes for attaching the base to the bottom of the deck of a skateboard and a base bushing receptacle portion which has a roughly cylindrical cavity into which the bushing fits, a hole through which the kingpin fits, a bushing with a kingpin hole through the center of a diameter sufficient to allow the kingpin to pass, a hanger unit consisting of an axle with axle threads at both ends, a hanger body through which the axle fits, a hanger bushing receptacle of a size sufficient to allow the bushing to be inserted, a hole through which the kingpin fits, and a nut with threads which mate with the kingpin threads, such that by attaching the base to a skateboard, attaching two wheels to the axle, and threading the kingpin through, in order, the base, the bushing, the hanger, and the nut, the wheels can be attached to the skateboard with only one axis of contact, such that when a rider places weight on one side or the other of the skateboard, the wheels rotate about the kingpin without relying on a secondary member for support or as a pivot axis, where the base additionally comprises two or more cam stops and the hanger additionally comprises two or more cam stops, where each of the two or more cam stops on the base is opposite to one of the two or more cam stops on the hanger, and where when the base and hanger are removably attached to one another by the kingpin and the nut, with the bushing in between the base and the hanger, the cam stops of the base have a set gap between them and the cam stops of the hanger, where the two or more cam stops of the base extend beyond the two or more cam stops of the hanger such that a cam stop of the base engages an opposite cam stop of the hanger, thereby allowing the hanger a certain range of rotational motion before each base cam stop meet its opposite hanger cam stop and prevent further rotation of the hanger, which thereby limits the amount of movement of the wheels.