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:
Sep. 30, 2014
Filed:
May. 21, 2010
Stefan Stark, Huskvarna, SE;
Joakim Arvby, Jönköping, SE;
Stefan Steen, Huskvarna, SE;
Annica Gabrielsson, Huskvarna, SE;
Stefan Stark, Huskvarna, SE;
Joakim Arvby, Jönköping, SE;
Stefan Steen, Huskvarna, SE;
Annica Gabrielsson, Huskvarna, SE;
Husqvarna AB, Huskvarna, SE;
Abstract
A hand-held work apparatus includes an engine housing (). An internal combustion engine () is arranged in the engine housing () and includes a cylinder () and a crankshaft. A fan wheel () is driven directly or indirectly by the crank shaft, such that the fan wheel () rotates about an axis A. A fan housing () surrounds and cooperates with the fan wheel (). A combustion air inlet () is located radially outside of the fan wheel () for leading air to the internal combustion engine (). Further, the combustion air inlet () includes a combustion air inlet port () and a combustion air duct (). The combustion air inlet port () is provided with a first edge (), which first edge () is located radially adjacent to the periphery () of the fan wheel (). An angle X between a first line L1 extending radially from the axis A in a direction parallel to a main direction of the cylinder () and a radius L2 extending radially from the axis A in a direction such that it intersects with the first edge (), is less than 70° and preferably less than 66°, and even more preferably less than 62°.