| 摘要 |
A cylinder cube in one embodiment includes a disc base having an extending threaded shank; four cylindrical units each rotatably put on the shank and comprising four lengthwise sliding faces spaced around an outer surface, and four lengthwise sliding grooves each formed between two sliding groove; a plurality of arc shaped sliding blocks each comprising a lengthwise dovetail on an inner surface fit into the sliding groove; a cylindrical manipulation block rotatably put on the shank and comprising a lengthwise sliding recess on an outer surface and two lengthwise troughs on both sides of the sliding recess, the troughs and the sliding recess together forming a shape complementary to a shape of the sliding block, and the manipulation block sized as a combination of the unit and the sliding blocks assembled thereon; and a disc head threadedly secured to the shank.
|
