Abstract: An armature for an electric motor has a lamination stack on a shaft with a commutator mounted on one end of the shaft. Magnet wires wound in slots in the lamination stack, the commutator and armature shaft are at least partially encapsulated in a first plastic, such as by insert molding. The commutator has a commutator ring divided into a plurality of segments with slots between the segments that are filled with a second plastic when the commutator is made by molding a core of the second plastic, such as phenolic, in the commutator ring before the commutator ring is mounted on the armature shaft. Where the commutator is a tang type commutator, the commutator ring has notches at axial ends of the slots which is filled with the second plastic when the second plastic is molded. The mold used to mold the first plastic includes projections that extend between the tangs of the commutator and against the notches at axial ends of the slots of the commuter.

Abstract: A driving tool with a flywheel, a driver, an actuator and a roller that is moveable between an unactuated position and an actuated position. Positioning of the roller in the actuated position forces an engagement surface on the driver into contact with a rotating edge of the flywheel to transfer energy from the flywheel to the driver so that the driver will translate along an axis. The actuator at least partially initiates movement of the roller from the unactuated position to the actuated position.

Abstract: An article having a first member and a second member that is molded onto the first member. The first member includes an aperture and an interior flange that extends at least partially about the aperture. The interior flange includes a pair of abutting surfaces. The second member is molded onto the interior flange and at least partially fills the aperture. Shrinkage of the second member following its molding onto the interior flange applies a force to the abutting surface that couples the second member to the interior flange. A method for forming an overmolded article is also provided.

Abstract: A jewelry item having an interchangeable head capable of being attached to different jewelry items, such as a ring, bracelet or necklace.