Patent ID: 9486867
Filing Date: 2016-11-08
CPC Classification: B23D,B27B

Claim Text:
1. A chainsaw for cutting an object to be worked by a saw chain provided with a plurality of teeth portions, the chainsaw comprising: a chainsaw main body provided with a driving source and a sprocket rotationally driven by the driving source; an operation switch operated by a worker to rotate the saw chain; a guide bar attachably and detachably mounted to the chainsaw main body, around which the saw chain driven by the sprocket is wound; a chain cover covering a part of the guide bar and the sprocket; an attaching member attaching the guide bar to the chainsaw main body via the chain cover; a detector detecting whether or not the guide bar and the chain cover are attached to the chainsaw main body; and a controller, coupled to the detector and provided on the chainsaw main body, configured to determine whether the guide bar is attached to the chainsaw main body based upon a signal from the detector, wherein the chainsaw main body has an attaching portion to which the guide bar is attached, the detector is provided at the attaching portion of the chainsaw main body, when the operation switch is operated and the controller determines that the guide bar and the chain cover are not attached to the chainsaw main body, the controller is configured to prohibit the saw chain to be rotated.