Abstract: A golf ball having a good rebound and excellent flight performance can be obtained using a golf ball composition which contains a diene polymer having an aluminum catalyst residue content of not more than 650 ppm.

Abstract: A method of manufacturing golf balls having a highly transparent cover includes, prior to formation of the cover, a preformed body fabricating step wherein a fluorescent material that emits light when exposed to ultraviolet radiation is included in or coated onto the preformed body. In this way, a preformed body which matches a cover to be formed can be easily and reliably identified from among a plurality of types of preformed bodies stored at a temporary storage place. This manufacturing method enables golf balls of excellent visibility and stylishness to be efficiently produced.

Abstract: The invention provides a method of manufacturing golf balls having covers of very high transparency, which method includes, prior to formation of the cover, a preformed body fabricating step wherein a material that develops a specific color when exposed to ultraviolet radiation is included in or coated onto the preformed body. In this way, a preformed body that matches the cover to be formed can be easily and reliably identified from among a plurality of types of preformed bodies stored at a temporary storage place. The invention also provides golf balls having a construction suitable for carrying out such a manufacturing method. The invention enables golf balls of excellent visibility and stylishness to be efficiently produced.

Abstract: The present invention provides a method of manufacturing a golf ball having a solid core formed of a rubber composition and a cover of at least one layer encasing the core, which method includes the steps of treating a surface of the core with a solution containing a halogenated isocyanuric acid and/or a metal salt thereof, and covering the treated core with a cover material. The invention also provides a golf ball obtained by such a method. Golf balls obtained by this method have a good feel and a good scuff resistance, and also have a high durability to impact.

Abstract: A switching circuit according to one embodiment has: N switching elements; a connection circuit including N?1 first inductance elements that are connected in series; a second inductance element; and N third inductance elements. Control terminals of the N switching elements are connected to ends of the connection circuit and connection contacts, respectively. One end of the second inductance element is connected to a power supply. The N third inductance elements electrically connects one ends of the N switching elements and the other end of the second inductance element with each other, respectively.

Abstract: A switching circuit according to one embodiment includes: a switching element that has a first terminal and a second terminal, and is driven by a pulse signal to switch a conduction state between the first and second terminals; a power source section that supplies a voltage to the first terminal; a load circuit that is connected in parallel with the power source section; a passive circuit section that is connected between a connection point between the power source section and the load circuit, and the first terminal, and suppresses a current flowing from the connection point to the switching element at a frequency N times (N is an integer of 1 or more) as high as a clock frequency of the pulse signal; and a resonant circuit section that is connected between the passive circuit section and the connection point, and resonates at the frequency of N times.

Abstract: A switching circuit according to one embodiment includes first to fourth semiconductor switch elements. A pulse-like signal is applied to each input terminal of the switch elements such that when the first and fourth switch elements are in an ON (OFF) state, the remaining switch elements are in an OFF (ON) state. The switching circuit includes first and second capacitance elements. The first capacitance elements connected between an output terminal of the second semiconductor switch element and the second capacitance elements connected between an input terminal of the second semiconductor switch element and an output terminal of the fourth semiconductor switch element has a capacitance to reduce a parasitic capacitance between the input and output terminals of each of the fourth and second switch elements at a frequency N times (N is an integer of 1 or more) as high as a clock frequency of the pulse-like signal.

Abstract: A switching circuit according to one embodiment is a switching circuit including at least one semiconductor switch element having an input, output, and a common terminals, a pulse-like signal being applied between the input and common terminals to switch a current between the output and common terminals. The switching circuit further includes a capacitance suppression element section connected at least one of between the input and output terminals, between the input terminal common terminals, and between the output and common terminals. The capacitance suppression element section reduces a parasitic capacitance between the terminals of the semiconductor switch element where the capacitance suppression element section is connected to less than that obtained when the capacitance suppression element section is not connected at a frequency N times (N is an integer of 1 or more) as high as a clock frequency of the pulse-like signal.

Abstract: A practice golf ball has a core and a cover. The core is made of a rubber composition which includes a base rubber, a co-crosslinking agent which is methacrylic acid, a crosslinking initiator and a metal oxide. The respective ingredients in the rubber composition are formulated in specific amounts, and the core has an optimized hardness profile. The cover is made of a resin component which is composed primarily of polyurethane. The cover has a thickness of 0.3 mm to 1.9 mm, and a material hardness, expressed as the Shore D hardness, of 30 to 57. The respective deflections of the core and the ball under a specific load, and the relationship therebetween, are optimized.

Abstract: In a practice golf ball having a core and a cover encasing the core, the cover has a material hardness, expressed as the Shore D hardness, of from 30 to 57. The core has an initial velocity CV (m/s) and the ball has an initial velocity BV1 (m/s) such that the value CV?BV1 satisfies the condition (CV?BV1)=0.7×(cover thickness)?b, where 0.1?b?1.0. The ball has a soft feel on impact like that of a one-piece golf ball and thus is able to reduce strain on the player's body, in addition to which it has much better durability to cracking than commonly used game balls, good retention of appearance even with long-term use, and a distance that is controlled so as to be appropriate for a driving range.

Abstract: A practice golf ball with a core and a cover has, upon initial measurement, a deflection BH1 (mm) when compressed under a final load of 1,275 N from an initial load of 98 N and an initial velocity BV1 (m/s), and also has, when measured again after being left to stand for 350 days following initial measurement, a deflection BH2 (mm) when compressed under a final load of 1,275 N from an initial load of 98 N and an initial velocity BV2 (m/s), such that the difference BH2?BH1 is not more than 0.2 mm and the difference BV2?BV1 is not more than 0.3 m/s. The ball has excellent durability to cracking and durability of appearance, and also maintains a stable feel and flight performance over a long period of time.

Abstract: A practice golf ball has a core and a cover. The core is made of a rubber composition which includes a base rubber, a co-crosslinking agent, a crosslinking initiator and a metal oxide. The base rubber is a mixture of polybutadiene with styrene-butadiene rubber and/or isoprene rubber, and the co-crosslinking agent is methacrylic acid. The core has a specific deflection under a specific load, and the ball has a specific initial velocity. The dimples on the surface of the ball have a volume ratio VR of from 0.95 to 1.7.

Abstract: A practice golf ball has a core made of a rubber composition which includes a base rubber, a co-crosslinking agent, a crosslinking initiator and a metal oxide, and has a cover which encases the core and is made of a resin material. The co-crosslinking agent is methacrylic acid. The resin material has a breaking strength of 20 to 80 MPa and an elongation of 150 to 600%. The ball is endowed with the properties required of practice balls intended for long-term use, including better durability to cracking and durability of appearance than ordinary game balls, and also better durability to ball surface loss than the one-piece golf balls which are commonly used as practice balls.

Abstract: A practice golf ball has a core and a cover. The core is made of a rubber composition which includes a base rubber, a co-crosslinking agent which is methacrylic acid, a crosslinking initiator and a metal oxide. The respective ingredients in the rubber composition are formulated in specific amounts, and the core has an optimized hardness profile. The cover includes a resin component which is composed primarily of polyurethane. The cover has a thickness of 0.3 mm to 1.9 mm, and a material hardness, expressed as the Shore D hardness, of 30 to 48. The respective deflections of the core and the ball under a specific load, and the relationship therebetween, are optimized. The volume ratio VR of dimples on the surface of the ball is optimized.

Abstract: A method and apparatus for printing is provided. The method includes preparing a hollow printing pad having a transfer surface, the printing pad being configured so that when the transfer surface is pushed, the gas in the hollow part is released to the outside of the printing pad; transferring ink or paint in recesses formed on the surface of a printing plate to the transfer surface of the printing pad by applying the ink or paint onto the surface of the printing plate and by pressing the transfer surface of the printing pad against the surface of the printing plate; and transferring the ink or paint to the object to be printed by pressing the transfer surface of the printing pad against the object to be printed until at least the hemispherical portion of the object to be printed is wrapped by the transfer surface of the printing pad.

Abstract: There are provided a printing method in which at least approximately hemispherical portion of a spherical object to be printed can be printed by pressing a pad against the portion one time, and which can prevent an image printed on the spherical object to be printed from being elongated or distorted, and a printing pad used for this printing method.

Abstract: A golf ball having a polymer layer that has been subjected to impregnation treatment with an isocyanate and/or isothiocyanate-containing olefin compound exhibits at least one improved golf ball attribute, such as scuff resistance or spin performance, compared with an original golf ball that has not been treated by impregnation.

Abstract: A golf ball having a polymer layer that has been subjected to impregnation treatment with an isocyanate and/or isothiocyanate-containing olefin compound exhibits at least one improved golf ball attribute, such as scuff resistance or spin performance, compared with an original golf ball that has not been treated by impregnation.

Abstract: To provide a parking support device for easily and quickly moving or rotating a target parking frame to an appropriate position. The parking support device includes a target parking position setting unit configured to set a target parking position at which a vehicle is to be parked with a target parking frame superimposed on an actual image displaying an area surrounding the vehicle. The parking support device guides the vehicle to the target parking position set by the target parking position setting unit. The target parking position setting unit moves the target parking frame initially displayed on a touch display to a position indicated by a coordinate point determined by a touch operation.

Abstract: To provide a parking support device for easily and quickly moving or rotating a target parking frame to an appropriate position. The parking support device includes a target parking position setting unit configured to set a target parking position at which a vehicle is to be parked with a target parking frame superimposed on an actual image displaying an area surrounding the vehicle. The parking support device guides the vehicle to the target parking position set by the target parking position setting unit. The target parking position setting unit moves the target parking frame initially displayed on a touch display to a position indicated by a coordinate point determined by a touch operation.