| 摘要 |
<p>The invention pertains to toys, more specifically to mechanical three-dimensional brain teasers, which can be used for play and also as a training device for developing manual dexterity, a souvenir or an educational aid. The three-dimensional brain teaser is in the form of a body of revolution having three continuous grooves on the surface thereof, which are arranged symmetrically about the body of revolution and intersect at six points. Movable components capable of moving along one continuous groove and from one continuous groove into another are arranged in the continuous grooves. The points of intersection of the continuous grooves lie in three half planes, wherein the points of intersection of each pair of the three continuous grooves lie in the same half plane, and the sections of the continuous grooves arranged between said points of intersection contain an equal number of movable components, and the remaining two sections of each continuous groove, which are located between the points of intersection in the adjacent half planes, contain an unequal number of movable components.</p> |
