The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 2004
Filed:
Jun. 06, 2002
Peter Linsbauer, Remshalden, DE;
Jürgen Erath, Stuttgart, DE;
Joachim Hoffman, Plochingen, DE;
Ulf Nägele, Murr, DE;
Hans Bernhard Sponner, Stuttgart, DE;
Andreas Stihl AG & Co., Waiblingen, DE;
Abstract
The invention relates to an intake arrangement ( ) for the combustion air ( ) of an internal combustion engine ( ) of a handheld portable work apparatus ( ), such as a cutoff machine, motor-driven chain saw or the like. An air filter ( ) is provided for purifying the combustion air ( ). Dust-laden combustion air is directed onto the air filter via openings ( ) of a filter housing ( ). The combustion air ( ) is purified by the air filter ( ) and is drawn by suction by the engine ( ) via an intake pipe ( ) of a carburetor ( ). A carrier airflow ( ) is provided in a flow channel ( ) for continuously or intermittently transporting away dust ( ) deposited on the air filter ( ). The combustion air ( ) and the carrier airflow ( ) are spatially separated via a discharge tube ( ). In this way, a minimization of the dust load of the air filter ( ) is ensured on the one hand and a continuous transport away of the dust ( ) from the air filter ( ) is ensured on the other hand. The removal transport of the dust ( ) ensures continuous operation of the work apparatus ( ).