Patent ID: 7228935

Claim:
An attachment pin arrangement for attaching an exhaust-gas muffler to an apparatus part of a portable handheld work apparatus driven by an internal combustion engine, the exhaust-gas muffler being provided for directing away the exhaust gases of the engine and to attenuate noise, the attachment pin arrangement comprising: an attachment pin extending between said apparatus part and said exhaust-gas muffler; the attachment pin having a threaded section and being threadably engaged with said apparatus part; said attachment pin including at least a partially exposed region, said region being disposed between said apparatus part and said exhaust-gas muffler and said region defining a cooling surface for conducting away at least a part of the heat which is introduced from the exhaust-gas muffler into the attachment pin via radiation and/or convection; said muffler having a holding flange and said attachment pin engaging said muffler at said holding flange; and, said attachment pin arrangement further including a holding nut threadably engaging said attachment pin and a heat insulating spacer mounted between said holding flange and said holding nut.