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:
Jan. 27, 2004
Filed:
Jun. 06, 2002
Peter Linsbauer, Remshalden, DE;
Jörg Schlossarczyk, Winnenden, DE;
Uwe Janoske, Michelfeld, DE;
Andreas Stihl AG & Co., Waiblingen, DE;
Abstract
The invention relates to an intake system ( ) for the combustion air ( ) of an internal combustion engine ( ) in a portable handheld work apparatus ( ). The intake system ( ) includes a filter housing ( ) having an air filter ( ) for purifying the combustion air ( ). The clean space ( ) of the air filter ( ) is fluidly connected to an outlet opening ( ) of the filter housing ( ). The outlet opening ( ) communicates with a carburetor ( ) of the engine ( ). A centrifugal-force separator ( ) is mounted forward of the air filter ( ) for separating large amounts of dust in the inducted combustion air ( ). The separator ( ) is so positioned ahead of the filter housing ( ) that a central core flow ( ) of the separator has a lower particle density ( ) and is supplied to the filter ( ). A tangential flow ( ) surrounds the central core flow ( ) in the interior of the separator ( ). The tangential flow ( ) has a great amount of dust or dirt and is conducted away via the suction side ( ) of a blower ( ), especially of a cooling-air blower ( ) of the engine ( ) having vanes on the back side thereof.