Patent ID: 7073263

Claim:
A hand-held tool comprising: a body including a handle extending in one direction; a discal blade rotatably supported at a tip end of the body and having a circumferential processing edge; a cover for covering the discal blade at least at one side in a thicknesswise direction of the discal blade; an operating member connected to the cover for reciprocal movement in the handle extending direction; and a guide mechanism for guiding the cover between a first position and a second position in response to the reciprocal movement of the operating member, the cover in the first position entirely preventing the circumferential processing edge of the discal blade from protruding beyond a peripheral edge of the cover, the cover in the second position allowing the circumferential processing edge of the discal blade to partially protrude beyond the peripheral edge of the cover; wherein the guide mechanism causes the cover to move along a path which is inclined relative to the handle extending direction; wherein the guide mechanism comprises a guide slot formed in the cover to be inclined at an angle relative to the handle extending direction, and a holding part fixed to the body to be inserted in the guide slot for regulating the movement of the cover; and wherein the guide slot penetrates the cover thicknesswise thereof, the cover being removably attached to the body together with the discal blade, the cover having a first side surface and a second side surface, the guide slot of the cover being inclined in a first direction relative to the handle extending direction when the cover is attached to the body with the first side surface held in contact with the discal blade, the guide slot of the cover being inclined in a second direction, opposite to the first direction, relative to the handle extending direction when the cover is attached to the body with the second side surface held in contact with the discal blade.