Shredding machine
US5016828A · kind A · utility
16Cited by
14References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1989 |
| Grant date | May 21, 1991 |
| Priority date | — |
| Expiry date | Aug 7, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C2018/0069
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A shredding machine has a rotary cutter and a fixed cutter. The rotary cutter includes a cutter part with a spiral cutting edge and a flute, and a column part for rotatably holding by a holding member for rotation of the rotary cutter. The fixed cutter has a cutting edge contacting with the cutter part of the rotary cutter. In rotating the rotary cutter, longitudinal slips of documents are fed between the cutters so that the documents enter the flute of the rotary cutter to cut the slips into chips by cooperation between the cutting edge of the rotary cutter and the cutting edge of the fixed cutter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.