Patent ID: 7275470

Claim:
A saw comprising: a base; a table rotatably mounted on the base; an extension arm rigidly connected to the periphery of the table, the extension arm extending radially away from an axis of rotation of the table; a saw unit mounted on the table for cutting work pieces located on at least one of the table and extension arm; a locking mechanism for angularly locking the position of the table relative to the base to prevent rotation of the table relative to the base, the locking mechanism comprising a locking member mounted on the extension arm, said locking member being linearly movable relative to the extension arm between a first position where a first engaging part of the locking mechanism is disengaged from the base to a second position where the first engaging part engages a first part of the base in order to prevent relative movement between the extension arm and the base, and said locking member being pivotable relative to the extension arm between a third position where a second engaging part of the locking mechanism is disengaged from the base to a fourth position where the second engaging part engages a second part of the base to prevent relative movement between the extension arm and the base, wherein the locking member comprises an elongated rod, and the first engaging part is a stop having an elongated recess for receiving an end of the elongated rod, a ball bearing being disposed within the recess and held between the elongated rod and the stop.