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:
Oct. 28, 2003
Filed:
Jun. 06, 2002
Applicant:
Inventor:
Heinz Hettmann, Schorndorf, DE;
Assignee:
Andreas Stihl Ag & Co., Waiblingen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 5/950 ;
U.S. Cl.
CPC ...
B01D 5/950 ;
Abstract
The invention relates to an intake arrangement for the combustion air ( ) of an internal combustion engine ( ) in a portable handheld work apparatus such as a cutoff machine, a motor-driven chain saw or the like. Combustion air is supplied to an air filter ( ) via a first centrifugal-force separator ( ). The air filter ( ) is charged with a carrier airflow ( ) in addition to combustion air and the carrier flow ( ) contains coarser particles ( ) which function to build up a filter cake ( ) on the air filter ( ). In this way, a low maintenance continuous operation of the intake arrangement is made possible especially when the ambient air is heavily laden with dust.