Patent ID: 6370781
Filing Date: 2002-04-16
Classification: B23D,Y10T

Abstract:
A reciprocating tool comprising:a rotatable drive gear; a pin connected to the drive gear and being eccentric with respect to an axis of rotation of the drive gear; a plunger extending perpendicular to the pin and being movable upward and downward; a connector engaging the plunger and the pin; a cam provided with the pin at an eccentric position; a cam holding member holding the cam at an eccentric position and being connected to the drive gear for rotation responsive to rotation of the drive gear; a engagement portion provided on the cam; and a second engagement portion provided on the cam holding member and being engageable with the first engagement portion; first means for cancelling engagement between the first engagement portion and the second engagement portion to allow rotation of the cam relative to the cam holding member, and for establishing engagement between the first engagement portion and the second engagement portion while holding the cam at an angular position which occurs as a result of the rotation of the cam.