Skateboard truck with dynamic action angle

摘要

A skateboard truck (200, 300), including a hanger (102″, 102′″) carrying an axle (104), and a baseplate (108″, 108′″). The axle holds a pair of wheels, which are steered in unison by the axle. The baseplate is coupled to the hanger to permit hanger rotation about a dynamic hanger rotation axis (138″). A static mechanism (202, 302) enforces a static pivot point at a locus (111, 109′) through which the dynamic hanger rotation axis passes during turning operation. Also, a dynamic mechanism (204, 402) causes the dynamic hanger rotation axis to pass through a plurality of dynamic hanger pivot points during that turning operation. Roll of the baseplate about a skateboard roll axis (152) is operable to cause a steering rotation of the axle, and also changes the action angle (150) of the truck.

主权项

1. An apparatus, comprising:
an axle structured to span in a length axis direction between a pair of wheels such that said wheels are steered in unison by said axle, displacement of said axle being constrained by structure carried by a baseplate and effective to cause steering rotation of said axle about a dynamic hanger rotation axis; wherein: during a turn maneuver between a maximum right turn position and a maximum left turn position: said dynamic hanger rotation axis always passes through a static pivot point at a locus that is static with respect to a deck on which said baseplate is mounted; said dynamic hanger rotation axis passes through at least two instantaneous pivot points that are not co-linear with said static pivot point; and roll of said baseplate about a roll axis causes a change in action angle of said axle during at least a portion of said turn maneuver.