Patent ID: 7775323
Filing Date: 2010-08-17
Classification: F01N

Abstract:
1. A silencer for a working tool comprising: A housing with a housing wall, which has at least one opening for exhaust gases; A hood extending outside the housing surrounding the at least one opening, having a hood roof with a hood opening pointing to one side, from which opening exhaust gases flowing from an inside of the housing are guided outwards in an exhaust jet through the at least one opening; and At least one fin arranged at an angle to the hood roof inside of the housing in the at least one opening and at least one fin opening associated with the at least one fin, characterized in that the angle between the hood roof and each of the at least one fin is less than 90°, wherein each of the at least one fin opening is pointed to the same side as the hood opening and none of the at least one fin opening is pointed to the opposite side as the hood opening, such that flow through the fin opening is directed toward the hood roof in such a manner that the exhaust gases are conducted at least partially against the direction of flow of the exhaust jet escaping from the hood opening.