Patent ID: 8595943
Filing Date: 2013-12-03
Classification: B27B,F16D

Abstract:
1. A chainsaw powered by a motor housed by a chainsaw body, the chainsaw comprising: a cutting chain operatively connected to and drivable by the motor; a guide bar mounting stud extending from the chainsaw body; a guide bar having a track for supporting the cutting chain around a periphery of the guide bar, an adjustment pin extending from a side face thereof, and an elongated slot formed therein, the guide bar mounting stud being slidingly receivable within said slot in the guide bar, wherein said guide bar is longitudinally adjustable relative to the chainsaw body; a cam rotatably attached to the guide bar mounting stud and having an eccentric groove formed into a surface directed toward the guide bar, wherein the adjustment pin is received in the eccentric groove, wherein rotation of the cam causes the adjustment pin to slide within the eccentric groove, thereby causing longitudinal movement of the guide bar with respect to the chainsaw body; and a clutch operatively connected to the cam, wherein the clutch is slippable relative to the cam to prevent more than a predetermined load to be applied to the guide bar for tensioning the cutting chain.