Abstract: A golf ball paint composition includes primarily a urethane paint made of a polyol and a polyisocyanate. The polyol is an acrylic polyol, and the composition has an elastic work recovery of at least 70%. The paint composition has a high self-repairing ability and is of high quality as a golf ball paint. Golf balls coated with this composition are able to maintain a good durability, in addition to which they have an excellent abrasion resistance and an excellent ball appearance.

Abstract: The present invention provides a golf ball capable of exhibiting an excellent spin performance in approach shot while the effect on the spin performance in driver shot is being suppressed to be low. The golf ball of the present invention includes a core, a cover located outside the core and having dimples formed thereon, and a coating layer located outside the cover and formed with a material having a surface force of ?130 ?N or less.

Abstract: A transformer is provided between a power supply, and a load with a resistance value R, and includes a two-terminal pair circuit composed of n-number of reactance elements that are mutually connected, where n is a natural number equal to or greater than 4. With respect to any value of the resistance value R of the load, an input impedance Zin of the two-terminal pair circuit has a real number component of k·R, where k is a constant, and an imaginary number component of 0. Such a transformer has a small size and a light weight, and does not need a coil, an iron core, and the like as used in a conventional transformer.

Abstract: A high frequency oscillator has a high frequency generation part, an oscillation part, a matching unit, rectification element parts and switch parts. The oscillation part oscillates high frequency power generated by the high frequency generation part. The matching unit is arranged between the high frequency generation part and the oscillation part, and has one or more capacitors and matching circuits having difference characteristics so as to perform matching between the high frequency generation part and the oscillation part. The rectification element parts and the matching circuits are arranged in one-to-one correspondence. The rectification element parts rectify high frequency power supplied from the high frequency generation part to the oscillation part. The switch part is connected to the corresponding rectification element part to switch the corresponding capacitor connected to the corresponding matching circuit through the corresponding rectification element part.

Abstract: A wireless power transmission apparatus includes a high-frequency power generator, a power-transmitting electrode, a plurality of power-receiving electrodes, a switchable matching device, a detection circuit and a controller. The high-frequency power generator generates high-frequency power. The power-transmitting electrode is configured to transmit the high-frequency power generated by the high-frequency power generator. Each of the power-receiving electrodes is capable of wirelessly receiving the high-frequency power from the power-transmitting electrode. The matching device is electrically connected with the power-transmitting electrode and includes one or more matching circuits. The detection circuit detects, based on the output of reflected power from the power-transmitting electrode, whether or not the generation of the high-frequency power by the high-frequency power generator and the transmission of the high-frequency power at the pow s itting electrode match each other.

Abstract: To provide a golf ball that can prevent considerable decrease in carry distance of a driver shot when it rains and also can more reliably prevent adhesion of dirt, etc. to the surface of the golf ball. The golf ball of the present invention includes a core, a cover that is provided on an outer side of the core and has dimples, and an outermost layer that is formed on an outer side of the cover and made of a material having a contact angle of 90° or more and a dynamic contact angle of 85° or less. The golf ball may have a dynamic friction coefficient of 0.48 or less. The cover may be formed of a material having hardness of 48 or more in terms of Shore D Hardness. The outermost layer may be formed of a urethane coating containing a water repellent additive, as a main component.

Abstract: To provide a golf ball that can prevent a decrease in carry distance of a driver shot when it rains and also, can exert excellent spinning performance upon an approach shot. The golf ball of the present invention includes a core, a cover that is provided on an outer side of the core and has dimples, and an outermost layer that is formed on an outer side of the cover and made of a material having a contact angle of 90° or more, the golf ball having a dynamic friction coefficient of 0.52 or more. The cover may be formed of thermoplastic polyurethane having hardness of 55 or more in terms of Shore D Hardness. The outermost layer may be formed of a urethane coating containing a water repellent additive, as a main component.

Abstract: In a golf ball having a core, a cover of at least one layer and a paint film layer formed on a surface of the cover, the paint film layer has an elastic work recovery of at least 60%, the cover layer in contact with the paint film layer has a material hardness on the Shore D scale of at least 55 and, letting M be the elastic work recovery (%) of the paint film layer and N be the material hardness (Shore D hardness) of the cover layer, M?N>0. The ball surface is scratch-resistant and has an excellent durability, and the ball has a reduced spin rate on shots with a driver or a long iron, resulting in an increased carry.

Abstract: A transformer includes a front stage circuit and a rear stage circuit. As a front stage circuit, a switch series unit, which is connected in parallel to a power supply, includes odd-numbered switches and even-numbered switches alternately turned ON. Mutual connection points of the respective switches and points at both ends of the switch series unit are regarded as m nodes in total. Capacitors are provided on at least one of a first electrical path combining odd nodes to lead them to a first output port, and a second electrical path combining even nodes to lead them to a second output port. The capacitors are present so as to correspond to at least (m?1) nodes. The rear stage circuit includes an element series unit, which is composed of a pair of semiconductor elements connected in series to each other for conducting operations of mutually opposite polarities, and necessary inductors.

Abstract: A front stage circuit of a transformer includes a switch series unit, capacitors, and a ground electrical path. The switch series unit, connected in parallel to a power supply, includes odd-numbered/even-numbered switches configured to be alternately turned ON. Assuming that mutual connection points of the switches and points at both ends of the switch series unit are m nodes in total, and one of the points at the both ends is a ground node, the capacitors are provided on at least one of a first electrical path that combines odd nodes and leads them to a first output port, and a second electrical path that combines even nodes and leads them to a second output port, and the capacitors are present to correspond to (m?1) nodes excluding the ground node. The ground electrical path connects the ground node directly to the first output port without an interposed capacitor.

Abstract: The invention provides a golf ball that is a one-piece golf ball or a golf ball having a core and a cover of one layer or a plurality of layers, wherein the one-piece golf ball or core is formed of a material molded under heat from a rubber composition containing: (A) a base rubber, (B) an organic peroxide, (C) water, (D) a metal methacrylate and (E) zinc oxide. The content of component (D) per 100 parts by weight of component (A) is from 30 to 45 parts by weight. The molar ratio (C)/(D) between components (C) and (D) satisfies the formula 0.9<(C)/(D)<1.1. The core has an initial velocity V0 of at least 72.0 m/s and up to 75.0 m/s.

Abstract: A multi-piece solid golf ball having a core, at least one intermediate layer encasing the core and at least one outer layer encasing the intermediate layer is characterized in that the intermediate layer is formed of a resin composition containing a specific acid-containing polymer or ionomer resin, and the outer layer is formed of primarily a polyurethane or a polyurea. The ball also has, between the intermediate layer and the outer layer, a bonding layer made of a polycarbonate and/or polyether-type aqueous polyurethane dispersion composition which includes a specific aqueous polycarbodiimide.

Abstract: A multi-piece solid golf ball having a core, at least one intermediate layer encasing the core and at least one outer layer encasing the intermediate layer is characterized in that the intermediate layer is formed of a resin composition containing a specific acid-containing polymer or ionomer resin, and the outer layer is formed of primarily a polyurethane or a polyurea. The ball also has, between the intermediate layer and the outer layer, a bonding layer made of a polycarbonate and/or polyether-type aqueous polyurethane dispersion composition which includes a specific aqueous polycarbodiimide.

Abstract: The invention provides a golf ball that is a one-piece golf ball or a golf ball having a core and a cover of one layer or a plurality of layers, wherein the one-piece golf ball or core is formed of a material molded under heat from a rubber composition containing: (A) a base rubber, (B) an organic peroxide, (C) water, (D) a metal methacrylate and (E) zinc oxide. The content of component (D) per 100 parts by weight of component (A) is from 30 to 45 parts by weight. The molar ratio (C)/(D) between components (C) and (D) satisfies the formula 0.9<(C)/(D)<1.1. The core has an initial velocity V0 of at least 72.0 m/s and up to 75.0 m/s.

Abstract: A front stage circuit of a transformer includes a switch series unit, capacitors, and a ground electrical path. The switch series unit, connected in parallel to a power supply, includes odd-numbered/even-numbered switches configured to be alternately turned ON. Assuming that mutual connection points of the switches and points at both ends of the switch series unit are m nodes in total, and one of the points at the both ends is a ground node, the capacitors are provided on at least one of a first electrical path that combines odd nodes and leads them to a first output port, and a second electrical path that combines even nodes and leads them to a second output port, and the capacitors are present to correspond to (m?1) nodes excluding the ground node. The ground electrical path connects the ground node directly to the first output port without an interposed capacitor.

Abstract: A transformer includes a front stage circuit and a rear stage circuit. As a front stage circuit, a switch series unit, which is connected in parallel to a power supply, includes odd-numbered switches and even-numbered switches alternately turned ON. Mutual connection points of the respective switches and points at both ends of the switch series unit are regarded as m nodes in total. Capacitors are provided on at least one of a first electrical path combining odd nodes to lead them to a first output port, and a second electrical path combining even nodes to lead them to a second output port. The capacitors are present so as to correspond to at least (m?1) nodes. The rear stage circuit includes an element series unit, which is composed of a pair of semiconductor elements connected in series to each other for conducting operations of mutually opposite polarities, and necessary inductors.

Abstract: A transformer of distributed-constant type is provided between an AC power supply with a frequency f and a load with a resistance value R, and includes: a first converter connected to the AC power supply and having a length of ?/4; and a second converter provided between an end of the first converter and the load, and having a length of ?/4, where a wavelength at the frequency f is ?. Such a transformer has a small size and a light weight, and does not need a coil, an iron core, and the like as used in a conventional transformer.

Abstract: A resin composition for a cover or topcoat of golf balls includes: a resin for a cover or topcoat of a golf ball; an ultraviolet (UV) absorber for absorbing UV rays, of which an absorbance spectrum has an absorption peak at a wavelength in a range of 310 nm to 330 nm, has an absorbance in a wavelength range of 300 nm to 350 nm of at least 1.0 AU and has an absorbance at a wavelength of 370 nm of 0.1 to 0.5 AU; and a fluorescent whitening agent for absorbing UV rays and emitting visible rays, of which an absorbance spectrum has an absorption peak at a wavelength in a range of 350 nm to 370 nm, wherein a concentration of the UV absorber ranges from 0.25 to 1.5% by mass with respect to a total mass of the resin composition.

Abstract: A power conversion apparatus 1 according to an embodiment of the present invention includes a high-voltage side input terminal TIH and a low-voltage side input terminal TIL, first and second output terminals TO1 and TO2, a power conversion circuit 10 that converts direct-current power input between the high-voltage side input terminal TIH and the low-voltage side input terminal TIL to generate alternating-current power between the first and second output terminals TO1 and TO2, and an inverted-voltage generation circuit 30 that generates an inverted voltage of a common mode voltage generated between the first and second output terminals TO1 and TO2 and inputs the inverted voltage to the low-voltage side input terminal TIL.

Abstract: A golf ball paint composition includes primarily a urethane paint made of a polyol and a polyisocyanate. The polyol is an acrylic polyol, and the composition has an elastic work recovery of at least 70%. The paint composition has a high self-repairing ability and is of high quality as a golf ball paint. Golf balls coated with this composition are able to maintain a good durability, in addition to which they have an excellent abrasion resistance and an excellent ball appearance.