| 摘要 |
A base plate with a ring of holes is secured to any existing snowboard. A flat rotatable plate has a two-position spring-loaded locking shaft which locks down in one of the holes to secure the boot binding at a desired stationary angle and alternately locks up out of the holes for free rotation. Any boot binding is attachable to the rotatable plate by a screw down cap, brackets in lateral slots, screws with bushings, side walls with screws, a binding-shaped groove, or a high friction plate surface. One plate has a protruding circular guide post and the other plate has a mating circular opening for encircling the guide post. A spring-loaded pin from one plate fits within an arc of a circular groove in the other plate to limit rotation of the boot for safety.
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