Patent ID: 9038519
Filing Date: 2015-05-26
Classification: B23D,B27B,Y10T

Abstract:
1. A sprocket for a chainsaw, the sprocket comprising: a spur configured to drive a saw chain around a drive end of a guide bar of a chainsaw, wherein the saw chain includes cutter links that have a first orientation as the cutter links traverse a straight portion of the guide bar; and a plurality of pockets disposed in the spur to engage the saw chain, wherein the pockets are asymmetrical with respect to a radius of the sprocket to cause the cutter links to have a second orientation as the cutter links traverse the sprocket, wherein the second orientation is different from the first orientation by an offset angle, and wherein the second orientation positions a depth gauge of the cutter link with a radial extension with respect to a center of rotation of the sprocket that is equal to or greater than a radial extension of a cutting element of the cutter link to facilitate engagement of the depth gauge with a sharpening element.