US Patent 7871087 Corrugated hanger for skateboard truck

A hanger for a skateboard truck that generally comprises a ring-shaped member, a pivot stem, and an elongated barrel that houses an axle. Such elongated barrel defines a plurality of corrugations on the bottom thereof, the longitudinal axis of each corrugation aligned generally perpendicular to the longitudinal axis of such elongated barrel. Such corrugations are strategically distributed along such elongated barrel to ensure adequate engagement of some number of corrugations with such obstacle during a grind, helping to prevent such hanger from slipping off from such obstacle in a direction generally perpendicular to the general direction of intended grinding motion along such obstacle. Such hanger can be adapted to cooperate with a variety of existing skateboard truck baseplates.