Piston rod seal for an insulating cylinder of a coating plant

US8387558B2 · kind B2 · utility

Assignee

• Dürr Systems AG · DE

Inventors

• Frank Herre · Oberriexingen, DE
• Rainer Melcher · Oberstenfeld, DE
• Manfred Michelfelder · Höpfigheim, DE

Key dates

• Filing date: May 9, 2008
• Grant date: Mar 5, 2013
• Expiry date: Aug 23, 2029

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B05B5/1675
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Various exemplary illustrations of a piston rod seal are disclosed. An exemplary piston rod seal may include a piston rod guide for guiding a piston rod that supports a scraping piston configured to scrape paint residue from an inner wall of a pipeline cylinder. The piston rod may further include a first seal for sealing the piston rod guide relative to the piston rod, and a second seal for sealing the piston rod guide relative to the piston rod, where the second seal is arranged axially offset relative to the first seal.