Abstract: The present invention relates to rifling of a gun barrel to provide grooves and bores in the gun barrel separated by a single edge area and a polygonal area.

Abstract: The present invention relates to rifling of a gun barrel to provide grooves and bores in the gun barrel separated by a single edge area and a polygonal area.

Abstract: The present invention relates to rifling of a gun barrel to provide grooves and bores in the gun barrel separated by a single edge area and a polygonal area.

Abstract: The present invention relates to rifling of a gun barrel to provide grooves and bores in the gun barrel separated by a single edge area and a polygonal area.

Abstract: A gun drill guide is disclosed comprising a cylinder body member of a resilient polymer material having a central opening extending therethrough, a radially extending flange means at one end thereof to engage the end face of a bearing assembly and an annular groove near the opposite end thereof defined by second and third radially extending flanges for engaging the opposite end face of the bearing assembly. A locking member, a chip deflector assembly, a stabilizer assembly or other guide attachment are disclosed which may be attached to the drill guide.

Abstract: The present invention relates to polygonal rifling of a gun barrel to provide grooves and bores in the gun barrel separated by a flat area which tapers from the bore to the groove. There is an angle from the center of the bore to the corner of the flat area, that is, where the flat area meets the bore. The angle is predetermined by the bore dimensions.

Abstract: A gun drill guide is disclosed comprising a cylinder body member of a resilient polymer material having a central opening extending therethrough, a radially extending flange means at one end thereof to engage the end face of a bearing assembly and an annular groove near the opposite end thereof defined by second and third radially extending flanges for engaging the opposite end face of the bearing assembly. A locking member, a chip deflector assembly, a stabilizer assembly or other guide attachment are disclosed which may be attached to the drill guide.

Abstract: A preform (10) for producing a plastic preform for forming blow molded plastic containers which comprises: a neck portion (16) defining an opening; a tubular sidewall portion (24) depending therefrom; and an integral base structure (28) depending from the tubular sidewall portion to a closed end (32); the preform having an outside wall face and an inside wall face with one of these, in the base structure, having integrally formed thereon a plurality of filets (36), extending longitudinally of the preform and defining a reinforcement (38) of varying thickness spaced from the closed end and circumscribing the base structure, wherein the filets decrease progressively in width and radial thickness at least from the reinforcing ring toward the closed end.

Abstract: A plastic preform for forming blow molded plastic bottles which comprises: a neck portion defining an opening; a tubular sidewall portion depending therefrom; and an integral base structure depending from the tubular sidewall portion to a closed end; the preform having an outside wall face and an inside wall face with one of these in the base structure having integrally formed thereon a plurality of filets, extending longitudinally of the preform and defining a continuous reinforcing ring of varying thickness spaced from the closed end and circumscribing the base structure, wherein the filets decrease progressively in width and radial thickness at least from the reinforcing ring toward the closed end. The preform is capable of forming a blow molded plastic bottle with a bottom portion having a continuous reinforcing ring of circumferentially continuous radially extending alterations in wall thickness with a regularly undulating cross-section along the circumference.

Abstract: A mold-core rod combination for producing a plastic preform for forming blow molded plastic bottles which comprises: a neck portion defining an opening; a tubular sidewall portion depending therefrom; and an integral base structure depending from the tubular sidewall portion to a closed end; the preform having an outside wall face and an inside wall face with one of these in the base structure having integrally formed thereon a plurality of filets, extending longitudinally of the preform and defining a continuous reinforcing ring of varying thickness spaced from the closed end and circumscribing the base structure, wherein the filets decrease progressively in width and radial thickness at least from the reinforcing ring toward the closed end. The preform is capable of forming a blow molded plastic bottle with a bottom portion having a continuous reinforcing ring of circumferentially continuous radially extending alterations in wall thickness with a regularly undulating cross-section along the circumference.

Abstract: An easily replaceable collet assembly for use in a movable pallet containing a plurality of stations for releasably gripping and rotating a plurality of resin preforms as they are moved through a blow molding process for providing rapid reconfiguration of the stations to accept different sized preforms. There is a mounting member carried by the pallet for rotation, the mounting member comprising a mounting plate perpendicular to a rotatable shaft connecting it to the pallet; a locking member carried by the mounting member for rotation about the shaft; and, a collet member for releasably gripping a preform of a given size, the collet member including locking apparatus for interacting with the locking member to releasably attach the collet member to the mounting plate to be moved in combination therewith.

Abstract: A pallet assembly is disclosed for use in simultaneous transfer of four preheated plastic preforms from an oven, through a blow mold where they are blown into bottles to a location where the bottles are discharged. The pallet has a base (shuttle) on which is mounted a plurality of pilot bushings for locating the pallet relative to the blow mold and other locations; four (one of each preform) preform registering means (locating and support assemblies), each to vertically locate and horizontally center each preform.