Patent ID: 6877235

Claim:
A saber saw comprising: a housing for accommodating a motor; a driven shaft rotatably supported by said housing and rotated by said motor; a plunger capable of reciprocative motion with respect to said housing and having a front end to which a saw blade is attached, the plunger extending in a reciprocating direction thereof; a first motion converting mechanism interposed between said driven shaft and said plunger for converting rotational motion of said driven shaft into the reciprocative motion of said plunger; a counterweight causing reciprocative motion with respect to said housing; a second motion converting mechanism interposed between said driven shaft and said counterweight for converting the rotational motion of said driven shaft into the reciprocative motion of said counterweight; a guide sleeve extending in an axial direction of the plunger; a swing roller movable along the guide sleeve and reciprocally movable together with the plunger; a pivot member extending in a direction perpendicular to the guide sleeve, the guide sleeve being pivotally movable about an axis of the pivot member; and means for pivoting the guide sleeve within a predetermined angle about the axis of the pivot member; wherein the guide sleeve is formed with an elongated hole extending in the axial direction and wherein the plunger includes a roller shaft extending through the elongated hole; and wherein the swing roller comprises a first swing roller connected to one end of the roller shaft, and a second swing roller connected to another end of the roller shaft.