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:
Apr. 25, 2006
Filed:
Aug. 27, 2003
Florian Hoche, Stuttgart, DE;
Axel Klimmek, Schwaikheim, DE;
Florian Hoche, Stuttgart, DE;
Axel Klimmek, Schwaikheim, DE;
Andreas Stihl AG & Co. KG, Waiblingen, DE;
Abstract
An exhaust-gas muffler includes a muffler housing () having an inlet opening () and an outlet (). The exhaust-gas muffler is especially for the internal combustion engine in a portable handheld work apparatus. At least one attenuating space (″) is configured in the exhaust-gas muffler (). The exhaust-gas muffler () includes at least one resonance pipe () to increase power and to reduce the hydrocarbon emissions. The resonance pipe () is fluidly connected to the inlet opening () and the resonance pipe leads to a backflow of exhaust gases into the combustion chamber (). For a simple manufacture, it is provided that the exhaust-gas muffler () includes lower and upper half shells () via which the resonance pipe () is at least partially delimited.