Patent ID: 7757593

Claim:
A miter saw comprising: a base portion having an upper surface for mounting thereon a workpiece; a cutting portion rotatably supporting a circular saw blade having side surfaces and pivotally movable toward and away from the upper surface, the cutting portion being tiltingly movable in a lateral direction to change a tilting angle between the upper surface and the side surfaces, the cutting portion being tiltable to a first tilting position at a first tilting angle from an original position perpendicular to the upper surface, and to a second tilting position at a second tilting angle greater than the first tilting angle, a first tilting region being defined between the original position and the first tilting angle, and a second tilting region being defined between the first tilting angle and the second tilting angle; a fence disposed on the base portion for supporting a surface of the workpiece, the fence comprising; a fixed fence fixed to the base portion and having a fixed support surface to which a part of the surface of the workpiece is supported and having a first pivot shaft which extends in a direction perpendicular to the fixed support surface of the fixed fence; a first subordinate fence having a first subordinate support surface to which another part of the surface of the workpiece is supported, the first subordinate fence being pivotally movably attached to the fixed fence for pivotal movement about the first pivot shaft so as to be movable with respect to the fixed fence to a first position outside of the first tilting region while the cutting portion is tilted within the first tilting region, and being also movable with respect to the fixed fence to a second position outside of the first tilting region and the second tilting region while the cutting portion is tilted within the second tilting region; and, a second subordinate fence having a second subordinate support surface to which still another part of the surface of the workpiece is supported; the second subordinate fence being movable with respect to the fixed fence to a third position outside of the first tilting region but within the second tilting region while the cutting portion is tilted within the first tilting region, and being also movable with respect to the fixed fence to a fourth position outside of the first tilting region and the second tilting region while the cutting portion is tilted within the second tilting region; wherein the first subordinate fence and the second subordinate fence are attached to the fixed fence independently of each other.