Patent ID: 6220920
Filing Date: 2001-04-24
Classification: A63H

Abstract:
A yo-yo comprising:an axle;a pair of yo-yo halves threadably connected to the axle to enable the space between the yo-yo halves to be adjusted by relative rotation of at least one of the yo-yo halves with respect to the other;the yo-yo halves being biased continually apart by a compression spring mounted on the axle, under a force sufficient to generate frictional engagement between the yo-yo halves and the axle to maintain the relative angular position of the yo-yo halves with respect to each other when the yo-yo is in use, the degree of frictional engagement being not so great as to preclude manual adjustment of the relative position of the yo-yo halves; andwherein the compression spring comprises at least two Bellville washers mounted in opposition to each other.