Abstract: A method of making a golf ball cover which, in order to increase the golf ball cover density, comprises adding to the cover materials which are in pelletized form nano-particles of a denser material of approximately 0.05 microns or less in size and the golf ball thus produced.

Abstract: A golf ball in which the core is made from one material and the cover from a different material yet the density of the core and the density of the cover material are essentially identical.

Abstract: A wood-type golf club head is provided with vertical grooves adjacent at each end of the ball hitting surface in order to enhance the desired gear effect when balls are hit on the toe and heel of the club.

Abstract: A golf club head made by brazing certain ceramic materials to certain metals by utilizing brazing alloys so as to provide, upon cooling, a compressively loaded component of the golf club head. The certain ceramic materials are joined to the certain metals by a brazing alloy.

Abstract: A method of making a golf club head or an insert for a golf club head and the product produced thereby which comprises preparing a porous base selected from the group consisting of metals, metal alloys, and cermets, and coating at least the face of said base with a plastic material.

Abstract: A method of making a golf club head by brazing certain ceramic materials to certain metals utilizes certain brazing alloys so as to provide upon cooling a compressively loaded component of said golf club head.

Abstract: The invention involves a golf club which has a ball striking surface with horizontally extending grooves on it in which the upper edges of the grooves are harder than the lower edges. The upper edges of the grooves on the ball striking surface are selectively made harder either by directional or non-directional surface treatment processes or by making them from materials which are harder than the materials from which the lower edges of the grooves are made.

Abstract: The invention involves golf club heads and a method of making golf club heads which comprises forming one or more components of the golf club head from sintered metal powders and then joining the components by welding, brazing, or diffusion or adhesive bonding to form a completed golf club head.

Abstract: A method of making a golf club head and golf club heads produced by the method which involves filling a ceramic mold in the shape of a golf club head with metal powders, the mold optionally containing inserts made from a material selected from the group consisting of metal powders, castings, wrought metal, and green compacts of metal powders and combinations thereof optionally sintering the material in the mold, compressing the material in the mold and the material contained therein by a process of hot isostatic pressure or a pseudo-isostatic pressure utilizing granular material around the mold to form near 100 percent of the theoretical density of the contents of the mold and thereafter removing the material from the mold.

Abstract: A method of making a golf club head and golf club heads produced by said method which involves filling a ceramic mold in the shape of a golf club head with metal powders, the mold optionally containing inserts made from a material selected from the group consisting of metal powders, castings, wrought metal, and green compacts of metal powders and combinations thereof, optionally sintering the material in said mold, compressing the material in said mold and the material contained therein by a process of hot isostatic pressure or a pseudo-isostatic pressure utilizing granular material around said mold to form near 100 percent of the theoretical density of the contents of said mold and thereafter removing said material from said mold.

Abstract: A method of making a golf club head and golf club heads produced by the mehtod which involves filling a mold with material selected from the group consisting of metal powders, castings, wrought metal, and green compact metal powders and combinations thereof so as to achieve the desired properties in the particular areas of the club head, compressing the material in the mold to form a green compact of the material, removing the green compact of the material from the mold and then heating the green compact to an elevated temperature to form a sintered product. Thereafter, the sintered product may be further heated under pressure to improve its density.

Abstract: A method of making a golf club head and golf club heads produced by said method which involves filling a mold with material selected from the group consisting of metal powders, castings, wrought metal, and green compact metal powders and combinations thereof so as to achieve the desired properties in the particular areas of the club head, compressing the material in the mold to form a green compact of the material, removing the green compact of the material from the mold land then heating the green compact to an elevated temperature to form a sintered product. Thereafter, the sintered product may be further heated under pressure to improve its density.

Abstract: A method and apparatus for welding involving directing a high velocity stream of gas at an angle to a welding arc in the direction of travel of the welding arc and onto the molten pool of metal formed by the arc as the molten pool solidifies, and a method and apparatus for injecting particles into the molten pool just prior to its solidification concurrently with the flow of high velocity gas.

Abstract: A golf club provided with a metallic golf ball striking surface wherein the striking surface has hard particles embedded therein with portions of the particles protruding above the surface so as to provide greater frictional grip between the golf ball striking surface and the golf ball. The striking surface of the golf club may be treated by various techniques so that the hard particles become embedded in the metallic matrix thus formed on the surface of the golf ball striking surface, or a separate formed metallic composite may be metallurgically bonded to the golf club head in the area of its surface which will contain the hard particles embedded therein with portions protruding above the surface.