Abstract: A paper shredder delaying device according to the present invention includes a pushing block installed by the paper feeding entrance inside of a top lid and the two conductors each screwed on one side of the pushing block. When papers are inserted into the paper feeding entrance, the aforesaid pushing block is pushed and thus oppresses the two conductors to conduct power and activates the electrical delaying device for the paper shredder to achieve delaying purpose.

Abstract: The present invention relates to a dual-purpose shredder, and the purpose of which is to add an extra blade unit in parallel with the two blade units of a conventional type to form a CD slot, in addition to a paper slot, thereby enabling the shredder shredding papers when a motor rotating clockwise and crushing CDs when the motor rotating counter-clockwise.

Abstract: Fragmenting devices for shredding paper and breaking compact discs comprising a compact disc cutting tool set configured at a side of and linked up by means of a connecting gear to a cutting tool set of a conventional paper shredder. The compact disc cutting tool set is constructed to include two juxtapositioned cylindrical rotary cutters, and pressed grains are defined on surfaces of the two rotary cutters. A compact disc is inserted between the two rotary cutters through a compact disc insertion opening defined in a top surface of a top cover, and thereupon the pressed grains on the surface of the cutting tools mash and break up the compact disc. The present invention is characterized that a cutting tool set for breaking compact discs is shorter than a cutting tool set for shredding paper, and thereupon the present invention can save the costs of produce.

Abstract: Fragmenting devices for shredding paper and breaking compact discs, comprising a compact disc cutting tool set configured at a side of and linked up by means of a connecting gear to a cutting tool set of a conventional paper shredder. The compact disc cutting tool set is constructed to include two juxtapositioned cylindrical rotary cutters, and pressed grains are defined on surfaces of the two rotary cutters. A compact disc is inserted between the two rotary cutters through a compact disc insertion opening defined in a top surface of a top cover, and thereupon the pressed grains on the surface of the cutting tools mash and break up the compact disc.

Abstract: A paper shredder cutting tool having multiple cutting edges constructed from a pair of cylindrical rotary cutters, which are each separately mounted on a hexagonal shaft, and a plurality of cutting blades are securely mounted on the shafts. A spacer is configured between each pair of adjacent cutting blades, thus partitioning the cutting blades therebetween, and thereby allowing the cutting blades to be assembled and mounted in an interleaving fashion on the two cylindrical rotary cutters. Moreover, each of the cutting blades is further constructed from a pair of blades. The present invention is characterized in having a plurality of cutting edges circumferentially arranged and minimally separated on each of the pair of blades, thereby forming a compact assembly of blade edges. The paper shredder cutting tool provides capability to feed around twenty sheets of paper or cardboard at one time, thereupon being rapidly shredded into small bits.