Apparatus for shredding documents
US4489897A · kind A · utility
62Cited by
1References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1983 |
| Grant date | Dec 25, 1984 |
| Priority date | — |
| Expiry date | Mar 2, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C2018/164
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus for shredding paper by passing the paper or document between a pair of shredding rollers comprising a plurality of spaced cutters characterized by a backup arrangement for at least one of the rollers to prevent bending of the roller and jamming during a shredding operation. The backup arrangement includes at least one yoke member having at least one finger which extends between cutters to engage a spacing portion of the roller to limit the amount of bending thereof so that a document or sheet of paper cannot pass between the rollers without being shredded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.