专利名称：Chainsaw guide bar发明人：Arvo Leini申请号：US08/239316申请日：19940506公开号：US05561908A公开日：19961008
摘要：Guide bar for chain saws, where the chain is supposed by a nose sprocket whiletraversing the front end. Regions of the edges of the guide bar are locally hardened to ahigher hardness than the rest of the guide bar. The regions of hardness are only wherethe chair impacts the bar near an attachment end of the guide bar after having left thedrive sprocket of the power socket, and where the chain settles on the guide bar edgeafter having been supported by the nose sprocket while traversing the nose curvature.
申请人：SANDVIK AB
代理机构：Burns, Doane, Swecker & Mathis, LP.
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