Power saw blade
OwnerHorst Sellmaier, Hartwig Sandholzerinventors
Life of this patent
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Abstract
An elongate chain support blade of a chain saw is shaped so as to provide clearance between respective runs of the chain and longitudinal edges of the blade, thereby reducing friction and reducing oil usage. Other aspects of the invention reside in a chain guide wheel on the blade providing the chain with a short inclined chain run at the forward end, and different forms of chain-tensioning devices.
Claims10
In a chain saw having a chain assembly comprising an elongate chain support blade projecting cantilever-wise from a motor casing and an endless saw chain wound around a drive wheel adjacent and inner end of the blade and a spur wheel on an outer end of the blade for penetration of the chain assembly as a whole through wood when the chain is driven by the motor, the improvement wherein the blade is shaped to provide clearance between forward and reverse runs of the chain and respective longitudinal edges of the blade along substantially the entire length of the blade.
Dependencies are inferred from the claim text.