Patent · US Expired

Roller mill

US5199657A · kind A · utility

5Cited by

5References

10Claims

0Family size

Assignee

Krupp Polysius AG · DE

Inventors

Gerhard Kastingschafer · Wadersloh, DE
Bernhard Peterwerth · Bad Laer, DE

Key dates

Filing date	May 24, 1991
Grant date	Apr 6, 1993
Priority date	—
Expiry date	May 24, 2011

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB02C4/305
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A roller mill assembly composed of a pair of rollers spaced apart to form a crushing zone therebetween and having recesses which are dimensioned and shaped so that during the grinding process feed material is embedded in the recesses and fills them to increase the draw of feed material into the crushing zone.

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