Abstract: A spin chuck jig includes a handle having first holes, a base having second holes, wherein a number of the second holes and a number of first holes are the same, and bolts each penetrating one of the first holes and one of the second holes so that the handle and the base are attached to a spin chuck to be lifted from a spin process equipment.

Abstract: A universal joint assembly includes a cross having a body and at least a pair of outwardly extending opposed trunnions. The trunnions define a trunnion axis. A bearing cup is rotatably mounted on each of the trunnions. A yoke includes a pair of opposed arms wherein each arm has an opening formed therethrough and aligned with the other arm opening to receive one of the bearing cups. Each of the openings defines a cylindrical surface having a cylindrical groove of a predetermined width formed therein. The yoke defines a yoke axis. A snap ring of a predetermined thickness is inserted into each of the grooves to retain the bearing cups on said trunnions. The width of each of the grooves is greater than the thickness of the snap rings to permit the cross to be selectively positioned with respect to the yoke. A staking operation fixes the position of the cross with respect to the yoke so that the cross center of gravity is aligned with the yoke axis.

Abstract: A process and apparatus for forming a sheet material by drawing it into a die cavity (12) utilizing the flow of a viscous thermoplastic polymer medium extruded against the sheet (22) and/or extruded out of said die cavity (12) through a plurality of passageways, (14a), (14b), and (14c) and programmably varying said extrusion of said medium to cause the sheet material to be controllably stretched into the cavity and shaped.