Air filter unit

US8277527B2 · kind B2 · utility

Assignee

• Andreas Stihl AG & Co. KG · DE

Inventors

• Sven Keller · Winnenden, DE
• Harald Bühner · Welzheim, DE
• Christoph Maschke · Trier, DE
• Armin Kölmel · Rottenburg am Neckar, DE
• Andreas Weisshaar · Waiblingen, DE
• Konrad Knaus · Gaildorf, DE

Key dates

• Filing date: Feb 1, 2010
• Grant date: Oct 2, 2012
• Expiry date: Dec 31, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An air filter unit (1) for a carburetor (2) of a portable handheld work apparatus includes a filter element (3) and at least one clean air channel (10, 11) arranged between the filter element (3) and the carburetor (2). At least one condensation rib (29, 30, 31, 32) is arranged in the clean air channel (10, 11) running in flow direction.