Abstract: Solid rollers of a urethane material are formed in closed mold formed by a tube and two end plugs spaced by a shaft, the latter becoming the shaft for the roller. The closed mold avoids rough grinding to a cylindrical shape, as well as avoiding the resulting waste of material and introduction of defects that arise from rough grinding. The formation of bubbles during injection of the urethane material is avoided by filling the closed mold with carbon dioxide gas prior to injection. The formation of gate marks in the urethane material is avoided by repositioning the end caps after injection to separate the injection gate from the cylindrical cavity. The need to trim the ends of the roller is avoided by providing an annular cavity between the top end cap and the tube that receives excess urethane material to be drawn into the cylindrical cavity as the urethane shrinks during curing.

Abstract: Solid rollers of a urethane material are formed in closed mold formed by a tube and two end plugs spaced by a shaft, the latter becoming the shaft for the roller. The closed mold avoids rough grinding to a cylindrical shape, as well as avoiding the resulting waste of material and introduction of defects that arise from rough grinding. The formation of bubbles during injection of the urethane material is avoided by filling the closed mold with carbon dioxide gas prior to injection. The formation of gate marks in the urethane material is avoided by repositioning the end caps after injection to separate the injection gate from the cylindrical cavity. The need to trim the ends of the roller is avoided by providing an annular cavity between the top end cap and the tube that receives excess urethane material to be drawn into the cylindrical cavity as the urethane shrinks during curing.

Abstract: A piston body in a housing has first and second opposite facing pistons and a component lead processing member attached to the body between the pistons and movable with the piston body. A stationary lead processing member in sliding engagement with the movable lead processing member receives the lead to be processed. A lead processing controller includes a light sensor and a light emitting device for sensing the presence of a received lead to be processed and for causing air pressure to be selectively supplied to the pistons for processing the lead.

Abstract: A plurality of electrically conductive heads for bending the leads of components mounted on a printed circuit board are coupled to an apparatus for testing the component prior to bending and soldering the leads. The heads electrically contact the leads of the component prior to and during bending. A testing apparatus indicates that the component is present and can also test one or more electrical parameters of the component. The test apparatus indicates whether the component is good or bad prior to the bending of the component leads to facilitate replacing the component before it is soldered in place.