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US 4,124,169 AGranted
Document shredder
OwnerTakefumi Hatanakainventor
Life of this patent
Estimating the term…
Abstract
A document shredder which comprises a strip cutter to cut waste document into strips, a chip cutter to cut the strips into chips, and a minuting device disposed downstream of the chip cutters to cut the chips into pulp-like mass. The minuting device includes a housing having a conical surface formed with cutting teeth, and a conical rotary body formed with cutting teeth in engagement the cutting teeth of the housing.
Claims7
A document shredder for processing wste documents, comprising:
- means for cutting the waste documents into strips;
- means for cutting strips of waste documents into chips;
- a minuting device disposed downstream of said chip cutting means to finely
- cut the chips into a pulp-like mass;
- and means for providing driving power to said strip cutting means, chip
- cutting means and minuting means.
3 more elements
A document shredder for processing waste documents, comprising:
- means for destroying the wast documents such that the documents are rendered unintelligible;
- drive means for providing driving power to said destroying means;
- a casing housing said destroying means and said drive means;
- a stand-by chamber formed in said casing to temporarily keep the waste documents in a stand-by condition;
- and
- a fixed-feed mechanism adapted to be open to said stand-by chamber to feed at least one sheet from the waste documents kept in said stand-by chamber to said destroying means.
3 more elements
Dependencies are inferred from the claim text.