Portable handheld work apparatus having a filter case

US5595153A · kind A · utility

Assignee

• Andreas Stihl AG & Co. KG · DE

Inventors

• Klaus Hoppner · Erbach, DE
• Karl Forderer · Schwaikheim, DE
• Georg Lohse · Waiblingen, DE
• Klaus-Martin Uhl · Plochingen, DE

Key dates

• Filing date: Feb 13, 1995
• Grant date: Jan 21, 1997
• Expiry date: Feb 13, 2015

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M35/04
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a portable handheld work apparatus such as a motor-driven chain saw. The apparatus includes an internal combustion engine as a drive motor for a work tool. The engine is mounted in a housing. The engine draws combustion air from the clean compartment of a filter case via an intake channel. The clean compartment is partitioned from a dirt compartment of the filter case by an air filter. The filter case itself is closed by a hood. The cover is configured as a hood of the motor housing and is pivoted about a pivot axis which is held to the motor housing by at least one bearing. In this way, the air-filter case can be cleaned in a simple manner without a tool. When the hood is flipped open, the filter case is freely accessible so that the necessary maintenance of the air filter or cleaning of the filter case is possible.