摘要:
A 3D jigsaw puzzle includes puzzle pieces each having multiple arms and cutouts structurally complementary to the arms of an adjacent puzzle piece. A surface engagement exists between a peripheral edge defining each of the arms of a puzzle piece and a peripheral edge defining each of the cutouts of the adjacent puzzle piece so that the two adjacent puzzle pieces are combined. A linear engagement exists between opposite sides defining each arm of the puzzle piece and opposite sides defining each cutout of the adjacent puzzle piece.
摘要:
A cylindrical jigsaw puzzle includes a bottom rim having an outer flange, an inner flange and a first gap between the outer flange and the inner flange, a top rim having a ring body, a positioning flange extending from an inner face of the ring body and a second gap defined between the ring body and the positioning flange, top puzzle pieces each having a first assembly edge corresponding to and received in the second gap of the top rim and bottom puzzle pieces each having a second assembly edge corresponding to and received in the first gap of the bottom rim. Combination among the top puzzle pieces with the top rim mounted thereon, bottom puzzle pieces with the bottom rim mounted thereunder and a cap mounted on top of the top rim is able to accomplish a cylinder.
摘要:
A cylindrical sliding block jigsaw puzzle includes a barrel as a support; multiple arcuate sliding blocks combined together to construct a pattern on an outer periphery of the barrel; and an unslidable block detachably attached to an empty area defined in the outer periphery of the barrel. Beside being playable as a sliding block jigsaw puzzle, the cylindrical sliding block jigsaw puzzle also can be used as a pen container or a money box.
摘要:
A laminated three dimensional jigsaw puzzle includes multiple pieces superposed with one another and each piece having a dimension different from the others. Each piece has bosses on top of the piece and recesses in a bottom face of the piece to receive the bosses of the adjacent piece.
摘要:
A peer-to-peer based secondary key search method and system for cluster databases is disclosed. A cluster database has a plurality of storage nodes and each storage node is assigned with a node number and stores a plurality of records. A search term input means couples to the plurality of storage nodes for retrieving a record at a storage node. The search term input means calculates a first node number based on a hash function of a secondary key, queries the first storage node with the secondary key for retrieving a corresponding primary key, calculates a second node number based on a hash function of the primary key, and then queries the second storage node with the primary key for retrieving a corresponding record.