Shredder
US4944462A · kind A · utility
22Cited by
16References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 1989 |
| Grant date | Jul 31, 1990 |
| Priority date | — |
| Expiry date | May 2, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C2018/164
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A shredding device uses a plurality of interleaving, counter-rotating discs to reduce sheets of material into longitudinal strips. One or more notches, formed in the periphery of each disc, cut the longitudinal strips into segments. Deflectors disposed in the spaces between each disc clear unwanted material from between the discs. When jammed, the rotation of the discs reverses, and the notches bite into the jammed material to help remove it from between the discs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.