Patent ID: 7320635
Filing Date: 2008-01-22
Classification: B23D

Abstract:
1. A device for sharpening the teeth of a chain of a chain saw blade, the device being portable and usable the in field, and where the chain is not to be taken off the chain saw blade while being sharpened; wherein a spatial curved carrier ( 12 ) is fixed at one end, by means of a fastening means ( 11 ), to an upper end of one of two arms ( 2 , 3 ) originating in a body ( 1 ), so that said carrier ( 12 ) can be optionally shifted on a circular arch along said fastening means ( 11 ), said body is provided over the entire length thereof with a groove ( 5 ) which penetrates the body ( 1 ) in an area between said arms ( 2 , 3 ) and is connected to a gap ( 4 ), a free end of the carrier ( 12 ) is connected by a mounting ( 13 ) to a swivel arm ( 14 ) which lies essentially in a plane being predominantly parallel to the plane of the carrier ( 12 ), an actuator ( 15 ) with a grinding wheel ( 16 ) is associated with the free end of the swivel arm ( 14 ), wherein a left half ( 25 ) of the body ( 1 ) is formed with a click bulge ( 27 ) on the outside thereof, which is, on a side facing away from a chain blade ( 6 ), said click bulge intended for cooperation with a click spring guard ( 28 ), an adapter ( 29 ) is associated with an inside of the left half ( 25 ) of the body ( 1 ), said adapter reaching a chain ( 7 ) area with an inwardly bent flange ( 30 ) provided at a free end thereof, wherein a flexible adapter ( 31 ) is associated with the inside of the right half ( 26 ) of the body ( 1 ), said flexible adapter ( 31 ) reaching the chain ( 7 ) area with an inwardly bent flange ( 32 ) provided at the free end thereof; wherein the left half ( 25 ) comprises a distance bolt ( 33 ) with which the adapter ( 29 ) is moved towards or away from the chain blade, and that a first pair of distance bolts ( 34 ) extend through the right half ( 26 ) and through the flexible adapter ( 3 I), the right half ( 26 ) of the body ( 1 ) is formed with a recess ( 35 ) in an upper part thereof and in an area between the arms ( 2 , 3 ) of the body ( 1 ), a pressure member ( 37 ) which can be swung about an adjusting screw ( 36 ) rests in said recess, an adjusting nut ( 36 ′) mates with said adjusting screw ( 36 ) and determines a sharpening depth in a horizontal direction, wherein the pressure member ( 37 ) comprises a pair of distance bolts ( 38 ) arranged substantially perpendicular to the chain blade ( 6 ), when the sharpening device is ready to operate, a second pair of distance bolts ( 38 ) pressed against the flexible adapter ( 31 ) with ends thereof; and wherein the click spring guard ( 28 ) is located on the pressure member ( 37 ) and comprising a pair of shoulders ( 39 , 40 ) arranged in a way that one of the shoulders holds a tooth ( 8 ) to be sharpened when the click spring guard ( 28 ) cooperates with the click bulge ( 27 ).