Patent ID: 9010299
Filing Date: 2015-04-21
Classification: B25F,B27B,F02B,H01L

Abstract:
1. An engine tool comprising: an engine including a cylinder and a crank case, the cylinder being aligned with a cylinder axis concentric thereto; an engine tool housing having a front side, rear side, and a top side extending along the cylinder axis between the front and rear sides; the engine tool housing retaining the engine such that the cylinder axis extends through the front side of the engine tool housing and the rear side of the engine tool housing, the crank case being disposed between the cylinder and the front side of the engine tool housing, and the cylinder being disposed between the crank case and the rear side of the engine tool housing, the top side of the engine tool housing covering the cylinder and the crank case of the engine; a fan for introducing external air into the engine tool housing, wherein a rotation axis of the fan extends in parallel with the top side of the engine tool housing; a top cover extending along the cylinder axis and disposed such that the top side of the engine tool housing is disposed between (a) the top cover and (b) the cylinder and the crank case; an air cleaner room disposed adjacent to the rear side of the engine tool housing and retaining an air cleaner; and an air inlet at the front of the engine tool, wherein the top cover is connected with the engine tool housing with a predetermined clearance so as not to closely contact the top side of the engine tool housing and thus form a flow space between the top side of the engine tool housing covering the cylinder and the crank case and the top cover to allow external air suctioned from the air inlet to flow through the flow space formed between the engine tool housing and the top cover, and be introduced into either one of or both of the air cleaner room and the engine tool housing.