Patent ID: 7658012

Claim:
A reciprocating saw comprising: a housing; a motor supported by the housing; a spindle supported for reciprocation relative to the housing, the spindle having a front end for supporting a saw blade and being movable through a cutting stroke and a return stroke, the cutting stroke and the return stroke having a stroke length; a spindle drive mechanism connected between the motor and the spindle and operable to reciprocate the spindle; a counterweight supported for movement relative to the housing, a movement of the counterweight in a direction substantially opposite a movement of the spindle substantially balancing at least a portion of the movement of the spindle; a counterweight drive mechanism operable to move the counterweight relative to the housing; and an adjustment assembly having an actuator extending outwardly through the housing and being operable to adjust an extent of movement of the counterweight relative to the housing in response to adjusting the stroke length of the spindle.