Tube for the electrostatic coating of workpieces

US6986366B2 · kind B2 · utility

Assignee

• Dürr Systems AG · DE

Inventors

• Herbert Martin · Waiblingen, DE
• Martin Stiegler · Uhingen, DE

Key dates

• Filing date: Aug 27, 2003
• Grant date: Jan 17, 2006
• Expiry date: Aug 27, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/1393
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

For the pig delivery of the coating material at high voltage in a system for electrostatic mass-production coating of workpieces in the vicinity of grounded parts of the system, a multi-layer tube is provided, whose innermost layer forms the piggable inner wall, while a second layer consists of a high-voltage-resistant isolation material and is surrounded by a protective outer layer.