Abstract: A power tool may include a motor and a drive shaft having a first end coupled to the motor and a second end eccentrically coupled to a platen by a retainer bearing and eccentric sleeve. A counterweight component may be coupled to the second end of the drive shaft to counteract imbalance generated by rotation of the retainer bearing, eccentric sleeve and platen. The counterweight component may include a counterweight coupled to the second end of the drive shaft, between the eccentric sleeve and the platen. Alignment of the counterweight may be offset with respect to a centerline of the drive shaft to counteract vibration generated due to interaction of the platen with a workpiece. The counterweight component may also include a counterweight mass member coupled to a sector of the counterweight to counteract vibration generated due to interaction of the platen with a workpiece.

Abstract: A connector mechanism that connects a dust bag or other accessory to a power tool. The connector mechanism including a collar assembly having proximal and distal ends, the proximal end engaging the power tool and the distal end comprising a plurality of castellations radially spaced about an interior surface thereof for non-selectively engaging a plurality of castellations on the power tool to establish a mating interface between the collar assembly and the dust port; and a plurality of locking members radially spaced about the collar assembly to establish a locking relationship between the collar assembly and the dust port.