Patent ID: 9216490
Filing Date: 2015-12-22
Classification: B23Q,B24B

Abstract:
1. A guard device for a power tool, comprising: a fastening element defining a central opening through which a collar of the power tool is extended, the fastening element being configured to be fastened onto the collar; a lever element pivotably supported on the fastening element for pivotal movement about a first axis that is perpendicular to a radial direction; a guard portion extending from the fastening element and configured to surround at least a portion of a tool holder extending from the collar of the power tool when the collar is extended through the central opening of the fastening element; and a braking element pivotably supported on the fastening element and including a frictional engagement surface that is configured to be pressed against the collar by the pivotal movement of the lever so as to apply a frictional braking force against the collar when the power tool is in an operating state, the braking element being tiltable about a second axis tangent to the fastening element during a braking state; and wherein the frictional engagement surface is configured to increase the braking force applied to the collar in response to a braking state of the power tool.