Patent · US Active

Powder purge tube

US7347649B2 · kind B2 · utility

6Cited by

41References

21Claims

0Family size

Assignee

Durr Systems, Inc. · US

Inventors

Thomas Duerr · Ellicott City, US
Hans-Georg Fritz · Esslingen am Neckar, DE
Joachim Hering · Gammertingen, DE

Key dates

Filing date	Jul 11, 2003
Grant date	Mar 25, 2008
Priority date	—
Expiry date	Aug 23, 2026

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB05B12/1481
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

To supply a powder lacquer sprayer, the coating powder is pressed by a pig through the supply line and, in the process, it is fluidized from the side of the pig which is turned toward the powder. The fluidization air can be led to the powder, for example, by a central passage opening of the pig or through an air permeable wall of the connection line. For the dosage of the coating powder, one uses the push medium which drives the pig.

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