Abstract: An object of the present invention is to provide a golf ball travelling a great flight distance on driver shots, exhibiting an excellent spin performance on approach shots under a dry condition and a wet condition, and showing an excellent shot feeling and durability. The present invention provides a golf ball comprising a golf ball body having a spherical core, an intermediate layer and a cover, and a paint film composed of two or more layers, wherein a 10% elastic modulus difference (Min?Mout) between an innermost layer and an outermost layer of the paint film is 25 kgf/cm2 or more.

Abstract: A green ball grinding method includes the step of supplying a green ball between a first surface of a first member and a second surface of a second member constituting a grinding apparatus, and the step of grinding the green ball between the first surface and the second surface while the green ball rotates around its own axis and in orbital motion. In the step of grinding the green ball, the step of causing the green ball grinding to proceed while applying load between the green ball and each of the first surface and the second surface, and the step of modifying the rotation axis of the green ball by reducing the load lower than in the step of causing the green ball grinding to proceed are executed alternately.

Abstract: Firearm projectiles and methods of manufacturing firearm projectiles from a supply of clad wire. In some embodiments, the clad wire is manufactured as electrical wire, such as copper-clad steel wire. Bullets and shot, as well as methods of forming bullets and shot, from clad wire are disclosed.

Abstract: A ball is used for engaging in a downhole seat and can be milled out after use. The ball has a spherical body with an outer surface. An interior of the spherical body is composed of a metallic material, such as aluminum. The spherical body has a plurality of holes formed therein. The holes extend from at least one common vertex point on the outer surface of the spherical body and extend at angles partially into the interior of the spherical body.

Abstract: A ball for use in teaching proper throwing or pitching techniques in baseball or softball is disclosed. The ball provides an internal mechanism by way of a snap device or a channel having a shiftable weighted material to provide both an audible and visible indication of when a proper wrist snap release of the ball has occurred. The internal mechanisms disclosed can be incorporated into newly manufactured baseballs or softballs or placed into preexisting balls.

Abstract: The present invention relates to a process for manufacturing a projectile made of steel or based on iron, for a hunting or sports cartridge, for the purpose of giving it a Vickers hardness at room temperature of between 40 HV 10 and 110 HV 10, preferably between 40 HV 10 and 85 HV 10, characterized at least by the following successive steps:—liquid pig iron or steel is used, hereafter called liquid metal, the carbon content of which is between 0.8 and 4.0% C by weight, preferably between 0.8 and 2.0% C by weight;—the liquid metal is cast using a steam or water-vapor granulation process to obtain spheroidal steel particles; —said particles are subjected to a heat treatment for softening the solidified metal by graphitization, while remaining in the ferritic range; and—optionally, said particles are subjected to a surface coating treatment.

Abstract: The present invention is directed to a method for manufacturing balls made of a vegetable laminate by sewing, sewing/stamping or glueing/stamping for the practice of sports. For producing the ball, the lined vegetable laminate (7), together with the bi-polymer air chamber (4), is subjected to a process comprising the steps of assembling (23), sewing (24), glueing (25) or compression molding (26). The vegetable laminate (2) is obtained by formulating/dyeing (14) the polyisoprene (8), spreading (15) same on the natural substrate (16) or recycled substrate (17), and vulcanizing (18), so as to produce the lined vegetable laminate (7) with a lining (9) made of polyisoprene (8) with natural filaments (10) or recycled filaments (11), impregnating (12) and final vulcanizing (13). The chamber (4) is obtained through the formulation (19) and a first immersion (20) in a polyisoprene polymer (8), a second immersion in 2-methyl-butadiene-1,3 polymer (21), vulcanization (18), and finally the valve (22) is glued.

Abstract: A green ball grinding method includes the step of supplying a green ball between a first surface of a first member and a second surface of a second member constituting a grinding apparatus, and the step of grinding the green ball between the first surface and the second surface while the green ball rotates around its own axis and in orbital motion. In the step of grinding the green ball, the step of causing the green ball grinding to proceed while applying load between the green ball and each of the first surface and the second surface, and the step of modifying the rotation axis of the green ball by reducing the load lower than in the step of causing the green ball grinding to proceed are executed alternately.

Abstract: A split bearing generally includes first and second bearing halves each having complementary partial shaft receiving portions, wherein the first and second bearing halves are substantially identically configured. The split bearing further includes fasteners for releasably coupling the first and second bearing halves together, such that when coupled, the complementary partial shaft receiving portions of the first and second bearing halves define a center bearing thru-hole for receiving a shaft, and when decoupled, the first and second bearing halves can be removed from the shaft.

Abstract: This phantom object is designed for a Winston-Lutz test on a device for radiation therapy treatment comprising a patient support having a rotation axis (V), a stand having a rotation axis (H) and a collimator having a rotation axis (C), locating means being provided for visually representing the theoretical positions (V?, H?, C?) of the three axes (V, H, C). A spherical ball is positioned at the center of a sphere in a material of electron density lower than that of the ball, the ball and the sphere both constituting the phantom object. The sphere has on its outer surface means for a visual alignment with the locating means allowing a positioning of the phantom object at the point of convergence of the three axes (V?, H?, C?).

Abstract: The present invention relates to a smart golf ball comprised of one or more mantle layers juxtaposed between an inner core and outer cover, where the core, the mantle layer(s), and/or the cover are further comprised of a ferrofluid, a magnetorheological fluid, an inverse magnetorheological fluid, and/or a magnetorheological elastomer, in any of its construction. These nano-engineered materials make possible a golf ball with heretofore-unprecedented levels of adaptive play.

Abstract: Metal parts can be economically fabricated by a metal stamping that comprises preforming a piece of wire to have a shape corresponding to the 2-dimensional configuration of a desired product workpiece, flattening the wire to form a metal blank, and subjecting the metal blank to metal stamping to obtain the desired product workpiece. The process can significantly reduce the amount of scrap material and thereby reduce manufacturing costs.

Abstract: The present invention relates to grinding balls made of fritted ceramic comprising a compound of alumina silicate (?Al2O3.?SiO2) and in particular mullite (3Al2O3.2SiO2), zirconia (ZrO2) and alumina (Al2O3).

Abstract: A method of making ceramic sphere, a pair of rollers and a core drill with a stopper are employed. The rotating core drill in cooperation with the rollers machines a cylinder-shaped ceramic core to make a ceramic sphere. The rotating core drill continuously machines the ceramic sphere in cooperation with the rollers to obtain a ceramic real sphere, while the stopper of the core drill prevents the ceramic sphere from moving upward.

Abstract: A method of producing rolling elements for a rolling bearing comprises mixing to process rounded elements made of steel balls and spherical rolling elements having outer diameter portion portion becoming a rolling contact face. The rolling contact face has curvatures in an axial direction and a radial direction normal to the axial direction, and has at least one plane. The thus mixed elements are placed and processed in a space between two processing boards opposing each other via the determined space. Thereby, the surfaces of the rounded balls and the rolling elements are processed to be rounded.

Abstract: A low alternating current loss superconducting cable is provided, including a plurality of superconducting tapes spirally wound around a longitudinally extending core. The tapes are provided in a path between about 5° and 85° relative to the longitudinal axis of the core such that the tape completely covers the surface of the core. The tapes are generally parallel to each other and include first and second tapes that are adjacent to each other. The first and second tapes partially overlap each other.

Abstract: A shot pellet that, has an inner core of a material such tungsten carbide, that is coated with a layer of bismuth. This coating is molecularly bonded to the tungsten carbide and is not an alloy. The unique properties of the shot pellet allow its density to be tailored. Under this process, the effective density of the pellet can be made to be identical to lead for direct replacement in current lead loading formulations. Additionally, the density can be made to be lower than lead for shotguns requiring low barrel pressures, or higher than lead for enhanced energy transfer while maintaining the other advantages of the instant invention.

Abstract: A shot pellet that, has an inner core of a material such tungsten carbide, that is coated with a layer of bismuth. This coating is molecularly bonded to the tungsten carbide and is not an alloy. The unique properties of the shot pellet allow its density to be tailored. Under this process, the effective density of the pellet can be made to be identical to lead for direct replacement in current lead loading formulations. Additionally, the density can be made to be lower than lead for shotguns requiring low barrel pressures, or higher than lead for enhanced energy transfer while maintaining the other advantages of the instant invention.

Abstract: A shot pellet that, has an inner core of a material such tungsten carbide, that is coated with a layer of bismuth. This coating is molecularly bonded to the tungsten carbide and is not an alloy. The unique properties of the shot pellet allow its density to be tailored. Under this process, the effective density of the pellet can be made to be identical to lead for direct replacement in current lead loading formulations. Additionally, the density can be made to be lower than lead for shotguns requiring low barrel pressures, or higher than lead for enhanced energy transfer while maintaining the other advantages of the instant invention.

Abstract: A method of manufacturing a steel ball for a rolling bearing, said method comprising: a molding step of forming a steel wire cut at a predetermined length into a raw ball having a band portion by a pair of molding forms having respectively hemispherical concave portions and relief grooves in peripheries of said concave portions on their respective opposing faces, said band portion being formed on a surface of said raw ball along said relief grooves by compressing said steel wire by said molding forms in a state in which both ends of said steel wire are sandwiched between said concave portions; and a tumbler working step of removing said band portion from the surface of the raw ball by tumbling.

Abstract: A method of manufacturing a steel ball for a rolling bearing, said method comprising: a molding step of forming a steel wire cut at a predetermined length into a raw ball having a band portion by a pair of molding forms having respectively hemispherical concave portions and relief grooves in peripheries of said concave portions on their respective opposing faces, said band portion being formed on a surface of said raw ball along said relief grooves by compressing said steel wire by said molding forms in a state in which both ends of said steel wire are sandwiched between said concave portions; and a tumbler working step of removing said band portion from the surface of the raw ball by tumbling.

Abstract: A method for forming non-circular dimples in a spherical surface is characterized by the use of a pantograph to repeatedly translate a master dimple configuration into the spherical surface. A drill bit is drilled into a portion of the spherical surface to a first depth. The drill bit is displaced relative to the surface by the pantograph along a given path without altering the axial orientation of the bit in order to form a non-circular dimple in the surface. The bit is removed from the surface and the process is repeated across other portions of the surface to form identical dimples therein.

Abstract: When a shot having a hardness equal to or higher than a ferrous or nonferrous metal shot material is blasted against the surface of the metal shot material at a blasting speed of 80 m/s or above, the collision causes heat to be generated only in portions of the metal shot material against which the shot has collided. The temperature is raised in the vicinity of the surface of the metal shot material. Alternatively, the metal shot material may be blasted against a metal body having a hardness at least equal to that of the temperature of the metal shot material. In either case, the temperature in the vicinity of the surface of the metal shot material is increased to or above an A.sub.3 transformation temperature when the material is ferrous and is increased to or above a recrystallization temperature when the material is nonferrous. Subsequently, the metal shot material is quickly cooled. As a result, the metallurgical structure of the surface layer 20.mu.

Abstract: A golf ball includes a cover and a coating formed on the cover, and dimples are formed in a layer composed of the cover and the coating. The coating is formed of a material having contraction and expansion properties and a higher heat resistance than the material for the cover and has a thickness of at least 15 .mu.m. In a process for producing the golf ball, after the formation of the coating, dimples are formed through the coating by conducting compression molding at a molding temperature near the melting point of the cover. In the golf ball, dimples can be precisely shaped and sharp edged through precise reproduction of design values of dimples. Moreover, the golf ball does not require deburring after dimple formation, thereby preventing a reduced preciseness of dimple shape and resultant variations in quality.

Abstract: In a golf ball having at least a set of large and small diameter dimples, the large and small diameter dimples are of the same cross-sectional shape in their lower portion. The small diameter dimple (2) has the same shape in cross-sectional view from a depth of 0.01 mm below the dimple (2) edge (3) to the bottom as that of the bottom portion of the large diameter dimple (1). A master model is prepared by feeding a cutter into a hemispherical surface of a master block to different depths while rotating the cutter, thereby forming a set of large and small recesses, respectively, wherein the large and small recesses have the same cross-sectional shape. The master model having plural types of dimples can be briefly fabricated and has increased freedom of design. Using the master model, a golf ball featuring uniform and densely distributed dimples can be manufactured.

Abstract: This invention relates to an improved golf ball center having a substantially spherical portion and a plurality of protrusions extending outwardly from the spherical portion, the ends of which support the center when it is placed in a spherical mold, and to a mold for injection molding such a golf ball center having first and second mold halves, and for a method of molding a golf ball core by placing a golf ball center into a spherical mold cavity wherein the golf ball center is supported by the protrusions, and filling between the mold cavity and the center.

Abstract: A method of producing a sealed, liquid filled spherical object for use in a golf ball core comprising the steps of;(a) providing a hollow spherical object;(b) injecting a flowable material into said spherical object wherein said injecting produces an aperture in said spherical object;(c) sealing said aperture with a radiation curable polymer; and(d) exposing said radiation curable polymer to radiation in an amount and for a time sufficient to cure said polymer.

Abstract: A method of restoring a used golf ball in which a small portion of the old cover is removed and a new layer of material added, which new layer includes dimples. The new layer may be transparent with an indicia on its outer surface or on the outer surface of the remaining old cover.

Abstract: A pressure medium composed of plural kinds of fluids each of which have a different density is charged in a pressure chamber forming, for example, fluid layers. A material is suspended by way of buoyancy brought by this pressure medium. By properly controlling the density of the pressure medium of plural kinds of fluids, various kinds of materials having different densities can be supported in a suspending state at an almost constant pressure. The apparatus and the method processes the material under a state of compensated-gravitation, and is capable of forming an easy-handling weightless state for a long period of time at low cost in a simple manner for ease of handling of the material being processed and can contribute to developing useful materials and novel materials and to the supplying of them in bulk.

Abstract: An improved golf ball comprising a hollow, spherical shell of a polymeric material; a unitary, noncellular core of a material which, at the time of introduction into the shell, is a liquid and a one-piece spherical cover over the center. The spherical shell, as opposed to the core, is primarily responsible for the high initial velocity obtained when the golf ball is struck by a golf club so as to allow the golf ball to be driven long distances both in the air and on the ground when it lands. In an alternate embodiment, the center and cover are of a one-piece, blow-molded construction.

Abstract: The invention pertains to a soft spherical playing ball consisting of a pair of yarn type socks rolled together to form a spherical ball simulating a baseball. The first sock is rolled into a cylindrical core and then rolled end over end in the second sock to form a spherical core where the ribbed open end of the second sock is opened inside out and pulled backward over the spherical core to provide a cover for the playing ball. The open ribbed end of the second sock is positioned on the spherical core to partially expose opposed ends of the spherical core defined by a first seam and second seam to assimulate the seams of a baseball.

Abstract: This invention relates to a process for hard-coating a ball, consisting in:hollowing in the outer surface of the ball a depression whose periphery lies at a certain distance from the two polar faces of the ball in order that it is bordered by elevated zones;coating the whole of the spherical outer surface with a layer of hard matter;and machining the layer over a depth such that this layer disappears completely on the elevated zones and remains only in the depression.The invention also relates to a ball employed in this process.

Abstract: A reclaimed golf ball having approximately the same flying properties (e.g. flying distance, rolling, ballistic height, etc.) as those of a new golf ball, the reclaimed golf ball being obtained by grinding the dimpled surface of a one-piece solid golf ball until the dimples on the surface are substantially removed, and then forming a dimpled coating layer of a rubber or an ionomer resin on the ground exterior surface.

Abstract: Like-new golf balls are made from used golf balls by first reducing the diameter of the used ball, to provide an intermediate ball, and then molding a new dimpled cover on the ball. The diameter of the used ball is uniformly reduced by compression molding or by grinding.

Abstract: A golf ball has no great circles intersecting dimples. A method for manufacturing the golf ball uses the steps of molding the golf ball with a pair of semispherical molds having many dimple patterns formed on the inner surface thereof so as to form first dimples on the surface of the golf ball. Then a burr formed on the connecting portion between upper and lower molds is removed and dimples are subsequently formed and/or corrected on the connecting portion.

Abstract: An improved golf ball having a coefficient of restitution of at least 0.700 and comprising a hollow, spherical shell of a deformable polymeric material which is filled with either a liquid or a unitary, non-cellular core of a material which, at the time of introduction into the shell, is a liquid. The spherical shell may be solid or cellular. The core material may be added through a hole in the shell as a liquid, a gel or a melt. In the preferred embodiment, the spherical shell is formed from two half shells which are bonded to each other. The mating edges of the half shells may have surface configurations which maximize their contact area.

Abstract: A bowling ball having a mass of preselected density and a spherical surface equidistant from the center of the mass. The improvement being a weight block of a greater density than the preselected density in which the weight block has a first elongate section having a pair of opposite ends with an intermediate portion therebetween adjacent the surface of the ball and another elongate section having an axis of symmetry extending generally transverse of the first elongate section and extending from the intermediate portion and located between the center of the spherical mass and the first elongate section. Further, this invention includes a method for marking the center of the spherical mass and center axis of symmetry of the weight block on the surface of the ball and the plane of symmetry of the elongate weight block on the surface of the ball.

Abstract: A pre-existing superconductor ceramic which is bonded to a substrate is passed through a relatively short heating zone to melt the ceramic superconductor. As the superconductor is subsequently cooled after it has passed through the heating zone, a temperature gradient is established along the superconductor which causes the melted crystals to renucleate and grow along and parallel to the temperature gradient. The resulting crystalline structure exhibits improved superconducting properties when the superconductor is placed in the presence of a magnetic field. For appropriate applications, the substrate can be formed as a wire.

Abstract: A signal-emitting golf ball, having a chamber formed into its outer surface as a manufacturing step after the ball has been formed into its generally spherical shape.The chamber is of a form providing a reception chamber for the signal-emitting means being placed inwardly of the ball's outer surface at a manufacturing stage in which the signal-emitting means are not subject to ball-shaping or prior manufacturing steps.A novel signal-emitting device, shock-activated in nature, is provided to be silent through the practice swinging, but automatically emits a sound upon the ball being struck, and it keeps sounding until the player finds it and wishes it silent for the next shot, although preferably the sound is dim enough and steady enough so as to not be a bother.

Abstract: An improved electronics containing cartridge and cartridge holder are disclosed. The cartridge is utilized to encase electronic circuitry, such as a bubble memory, which can be selectively added to main equipment via the cartridge holder. The cartridge itself is made by an improved system which eliminates the environmental concerns of printed circuit board manufacture. The circuit board of the cartridge is formed by molding a substantially planar member with a plurality of circuit trace forming grooves therein. The circuitry is stamped from a metal web and inserted into the respective grooves. The contacts of the holder and cartridge are arranged for low wear operation. Both of the cartridge and the holder are provided with means which are readily exchangeable and provide a plurality of keyed configurations to assure that only the proper cartridge will be inserted into the respective holder.