Patent · US Expired

Exhaust gas muffler for internal combustion engines

US6422338B1 · kind B1 · utility

10Cited by

5References

21Claims

0Family size

Assignee

Andreas Stihl AG & Co. KG · DE

Inventors

Johannes Menzel · Oberhausen, DE
Bernhard Durr · Stuttgart, DE
Gerd Wöllhaf · Waiblingen, DE

Key dates

Filing date	Jun 1, 2000
Grant date	Jul 23, 2002
Priority date	—
Expiry date	Jun 5, 2020

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01N2590/06
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

An exhaust gas muffler is provided for an internal combustion engine, especially for two-stroke engines of manually guided implements such as power chain saws, brush cutters or the like. The muffler has a housing that includes two shells. One of the shells is provided with at least one outlet opening for exhaust gas. A cover is provided that guides the exhaust gas, and the cover has at least one discharge opening for the discharge of exhaust gas to the surrounding air. An exhaust gas chamber is formed within the cover. A screen element is disposed in the vicinity of the at least one discharge opening such that the exhaust gas stream is guided through the screen element.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.