Patent · US Expired

Document shredder

US5934580A · kind A · utility

7Cited by

4References

14Claims

0Family size

Assignee

Schleicher & Co. International · DE

Inventors

Franz Maier · Munich, DE
Helmuth Maier · Überlingen, DE
Bruno Lang · Ballwil, CH

Key dates

Filing date	Mar 11, 1997
Grant date	Aug 10, 1999
Priority date	—
Expiry date	Mar 11, 2017

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB02C2018/0069
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A document shredder (11) has a cutting mechanism (12) constructed as a chassis and in which the cutting rollers (16) are mounted so as to contrarotate. They are designed as disks cutting on both sides for particle cutting. Over the entire length of the cutting rollers (16) extend stripper elements (28, 29), whose individual strippers (31) are combined into a block by means of longitudinally directed connecting elements (33). As they engage by more than 180.degree., almost 270.degree., around the shaft cross-section (18), two stripper elements (28, 29) are connected in mutually fitting manner in the circumferential direction. The stripper elements can be made in one piece from injection moulded plastic and are also used for the connection of the two side walls (14, 15) of the cutting mechanism (12).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.