Abstract: A assembly of mated molded parts and a method for making same are disclosed in which the assembly has first and second parts with precisely mating surfaces. The first part is formed by molding, casting, or the like such that the mating surface of the first part is formed with at least one protrusion. The second part is formed in place against the first part such precisely mating surfaces are formed with the second part enveloping the protrusion. The two parts thus formed are forced apart from each other. The protrusion may be formed with a head which interlocks with the second part. When the parts are separated, the head breaks from the protrusion. In a particular embodiment, a bearing cap is disclosed having a central opening for the passage of a shaft.

Abstract: A method for making a bearing cap in which the bearing cap has first and second parts with precisely mating surfaces. The first part is cast such that the mating surfaces thereof are formed with protrusions terminating in enlarged heads. The second part is cast in place against the first part such precisely mating surfaces are formed with the second part enveloping the protrusions. The two parts thus cast are forced apart from each other such that the protrusions fracture across the narrowed neck portions by which the heads are joined.

Abstract: A method and apparatus for closed shot die casting is disclosed in which a molten metal filling cylinder is provided intersecting a shot sleeve in fluid communication with a filling hole in the shot sleeve. Molten metal is introduced into the filling cylinder. The molten metal passes from the filling cylinder through the filling hole into the shot sleeve until the shot sleeve is completely filled with molten metal. The filling cylinder includes a piston-like, reciprocating internal valve which moves into position to seal off the filling hole. As a result, the shot sleeve is completely filled with molten metal and pressure-sealed prior to the advancement of the shot plunger.

Abstract: A brake caliper for a disk-type brake is disclosed having a prefabricated, cast-in-place cylinder bore liner. The liner is made of a machinable material, preferably steel, and the caliper body is made of a lightweight material, preferably aluminum. The caliper body is cast around the cylinder liner so that no further machining of the caliper bore is required. A reinforcing arm may be provided extending from the cylinder liner through the bridge portion of the caliper. A method for making the caliper is also disclosed in which the cylinder liner is positioned within a die cavity and molten metal material is cast around the liner to incorporate the liner into the caliper body.

Abstract: A gasket is provided including tubular nipples projecting outwardly from one side thereof for reception through mounting flange bores of an article of manufacture to which the gasket is to be secured prior to the article being shipped to an assembly point at which the article is to be bolted to a support structure therefor by mounting bolts secured through the bores and anchored relative to the mounting structure. The tubular nipples include inner sleeves whose ends corresponding to the outer ends of the nipples are constructed of ductile material and the sleeves are at least frictionally retained within the nipples. After the nipples are passed through the mounting bolt bores in an associated article of manufacture, the ductile ends of the inner sleeves are swedged over those surface portions of the article of manufacture disposed about the mounting bolt bores.