Patent ID: 8302567

Claim:
A motor chain saw comprising: a motor housing; a guide bar connected to said motor housing; a saw chain arranged on said guide bar; a drive unit arranged in said motor housing for driving said saw chain so as to circulate on said guide bar; wherein said drive unit comprises an internal combustion engine having a cylinder and a crankshaft, wherein said crankshaft extends transversely to a longitudinal axis of the motor chain saw, and further comprises a drive pinion for said saw chain mounted on a first end of said crankshaft and a cooling air blower with a blower wheel mounted on a second end of said crankshaft opposite said drive pinion, wherein a cooling air stream of said cooling air blower flows transversely to a longitudinal axis of the motor chain saw about said cylinder that is positioned between said drive pinion and said cooling air blower and exits as an exhausted blower air stream through a housing opening of said motor housing; an exhaust gas muffler mounted on said cylinder; at least one handle that spans said motor housing transversely to said longitudinal axis; a hand guard arranged between said at least one handle and a front end of said guide bar and comprising at least one leg connected to said motor housing in an area of said housing opening for said cooling air steam; wherein, in a side view onto said motor housing, in front of said housing opening a baffle element is arranged that branches off a partial stream from said exhausted blower air stream exiting from said housing opening and deflects said partial stream toward said exhaust gas muffler, wherein said baffle element is supported on said at least one leg of said hand guard.