Muffler assembly

Details Muffler assembly Muffler assembly

2005-10-18

2005-10-18

Denion, Thomas E. (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S302000, C060S312000, C060S314000, C181S238000, C181S240000, C181S272000

Reexamination Certificate

active

06955043

ABSTRACT:
A muffler assembly for an internal combustion engine of a portable handheld work apparatus such as a motor-driven chain saw, cutoff machine or the like includes an exhaust-gas muffler (1) which has a muffler housing (10). The muffler housing (10) is formed essentially from two half shells (24, 25) connected substantially fluid-tight to each other. The interior space of the muffler housing (10) includes at least two chambers (2, 3) which are partitioned from each other by a partition wall (4). A catalytic converter (5) is mounted in the partition wall (4). In the interior space of the muffler housing (10), an exhaust-gas inlet (6) opens which is connected to an exhaust-gas stub (9) of the cylinder (8) of the engine. The exhaust-gas muffler has an exhaust-gas outlet (7) which conducts exhaust gas from the interior space. The exhaust-gas muffler (1) is connected with threaded fasteners at at least three attachment points (22, 23) to the cylinder (8) in order to obtain a good fixation of the exhaust-gas muffler on the cylinder (8) of the engine. At least two attachment points (22) are arranged in the region of the exhaust-gas stub (9).

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patent: 3729477 (1989-03-01), None
patent: 06248939 (1994-09-01), None

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