Patent ID: 6640443
Filing Date: 2003-11-04
Classification: F01P,F02B

Abstract:
A manually guided implement having an air-cooled internal combustion engine for driving a tool, said implement comprising:an implement housing in which said internal combustion engine is disposed, wherein said housing has a first air inlet; a cooling air spiral case disposed in said implement housing and open toward said internal combustion engine, wherein ambient air can be drawn into said cooling air spiral case via said first air inlet for conveyance to said internal combustion engine; and a fan wheel fixedly held on a crankshaft of said internal combustion engine and accommodated in said cooling air spiral case, wherein a second air inlet is formed as an aperture in a wall of said cooling air spiral case, in said housing, wherein said second air inlet provides communication between an intake chamber of said implement housing and portions of said cooling air spiral case that convey cooling air.