Patent · US Expired

Zigzag classifier

US4931174A · kind A · utility

7Cited by

5References

6Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Hans Uhlemann · Solingen, DE
Heiko Herold · Dormagen, DE
Reinhard Boeck · Kaarst, DE
Hans Daun · Leverkusen, DE

Key dates

Filing date	Feb 27, 1989
Grant date	Jun 5, 1990
Priority date	—
Expiry date	Feb 27, 2009

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB07B4/04
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The zigzag classifier has a classifying space provided with air inlets which is subdivided into zigzag-shaped ducts, which are connected in parallel with respect to the flow, the lengths of which are greater than their widths. In this way a classifier package is formed with a plurality of small duct cross-sections. This design principle permits substantially lower overall heights for the same number of bends.

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