초록 ▼

A saw chain sharpener for a chain saw and a chain saw having a sharpener in which the bottom surfaces of the cutting teeth of a conventional bottom sharpened saw chain are conveniently sharpened automatically by running the chain under power through the sharpener. The saw chain can be sharpened usin

A saw chain sharpener for a chain saw and a chain saw having a sharpener in which the bottom surfaces of the cutting teeth of a conventional bottom sharpened saw chain are conveniently sharpened automatically by running the chain under power through the sharpener. The saw chain can be sharpened using the sharpener in a matter of typically twenty to thirty seconds without removing the chain from the chain bar. The sharpener is preferably adapted to be removably mounted to a bracket which is itself preferably removably disposed on the chain saw. The sharpener comprises a sharpening tooth disposed in a housing which is mounted on the chain bar. A top surface of the sharpening tooth frictionally engages bottom surfaces of the cutting teeth of the chain as the chain is run under power. A device for dispensing a sharpening compound to the sharpening tooth during sharpening may be disposed on the sharpener housing.

대표청구항 ▼

[ What is claimed is:] [1.] A saw chain sharpener for a chain saw having a saw chain disposed on a chain bar, wherein the saw chain has a plurality of cutting teeth, each cutting tooth having a cross section which defines a crook, the crook comprising an upstanding section and a projecting section,

[ What is claimed is:] [1.] A saw chain sharpener for a chain saw having a saw chain disposed on a chain bar, wherein the saw chain has a plurality of cutting teeth, each cutting tooth having a cross section which defines a crook, the crook comprising an upstanding section and a projecting section, a portion of the upstanding section lies approximately parallel to a side surface of the chain bar, the protecting section is carried by the upstanding section, at least a portion of the projecting section lies in a plane perpendicular to the side surface of the chain bar, each protecting section having a top and a bottom surface, the bottom surface of the projecting portion being closer to the chain bar than the top surface, the top surface is joined to the bottom surface by a leading edge, the angle between the leading edge and the top surface is an acute angle, the saw chain sharpener comprising:a housing comprising a recess;means for removably attaching the housing to the chain bar; andsharpening means disposed in said recess for sharpening the leading edge of each cutting tooth as the sharpening means is relatively moved through a position within the crook of each cutting tooth, a bottom surface of said sharpening mean positioned closer to the chain bar then a top surface of said sharpening means, wherein said top surface engages the leading edge when the chain saw is operated.