Patent application number | Description | Published |
20130066603 | GOLF BALL AND MECHANICAL ANALYSIS OF THE SAME - The accuracy or computation speed of mechanical analysis of a golf ball using the finite element method is increased. In the mechanical analysis, a model representing the golf ball is prepared on a computer, and computation is made by the finite element method using elements and nodes. At this time, the elements are made solid elements of hexahedron, the aspect ratio of the shape of each element is set so as to be not lower than 1.0 and not substantially higher than 6.5, and nodes are provided on the sides and at the vertexes of the hexahedron of element. | 03-14-2013 |
20130095955 | SOLID GOLF BALL - The invention provides a solid golf ball having a core and a cover, the core being formed of a rubber composition containing a base rubber, a co-crosslinking agent, a crosslinking initiator and a metal oxide. The base rubber is a mixture of polybutadiene and a styrene-butadiene rubber, the styrene-butadiene rubber having a styrene bond content of not more than 35 wt %. The co-crosslinking agent is methacrylic acid. The core deflection under specific loading and the VR value for dimples on the ball surface are set within specific ranges. | 04-18-2013 |
20130123039 | GOLF CLUB - A golf club includes a shaft and a head, the torque of the entire length of the shaft being in a range of 3 to 5°. From viewpoints of a torsional rigidity distribution of the shaft, an integrated value of the torsional rigidity on the grip end side of the shaft is 85% or less of the integrated value of the torsional rigidity of the entire length of the shaft. The head has a distance to the center of gravity of 40 to 48 mm and a gravity center angle of 22 to 30°. | 05-16-2013 |
20130123045 | MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball having a solid core, at least one intermediate layer and a cover. The core has a hardness which gradually increases from a core center to a core surface, with the golf ball having specific values for the hardness difference between the core center and the core surface; the hardness difference (I)−(II) in JIS-C hardness units being not more than ±2; the (hardness of intermediate layer material)−(hardness of core surface); the (initial velocity of sphere composed of core encased by intermediate layer)−(initial velocity of core); the (deflection of sphere composed of core encased by intermediate layer)/(deflection of core); and the (hardness of cover material)−(hardness of intermediate layer material). | 05-16-2013 |
20130137530 | GOLF CLUB SHAFT AND GOLF CLUB - A golf club is formed by winding and hardening a plurality of prepregs. High specific gravity materials having a higher specific gravity than carbon fiber are arranged on the butt side of the golf club. Arrangement of the high specific gravity materials is achieved by winding a high specific gravity material containing prepreg containing carbon fiber and a higher specific gravity material than the carbon fiber. Alternatively, the arrangement of the high specific gravity materials may be achieved by winding another high specific gravity material containing prepreg containing a glass fiber. | 05-30-2013 |
20130143688 | GOLF CLUB SHAFT - A golf club shaft has the bending rigidity distribution and the torsional rigidity distribution satisfying the following three relational formulas: 1) S | 06-06-2013 |
20130143689 | GOLF CLUB SHAFT AND GOLF CLUB - According to an aspect of this invention, there is provided a golf club shaft including a prepreg containing a carbon fiber, wherein the prepreg is winded and cured, and a winding thickness of the prepreg on a striking face is larger than a winding thickness of the prepreg on any other portion. | 06-06-2013 |
20130150176 | GOLF CLUB HEAD AND ORNAMENT - This invention provides a golf club head to which an ornament is fixed. The ornament includes a cup-shaped metal shell member, a solid elastic body which has a mounting surface fitted in the golf club head, and fills the interior of the shell member, and an adhesive layer which bonds the inner surface of the shell member to the elastic body. | 06-13-2013 |
20130150177 | GOLF CLUB HEAD - An iron golf club head according to this invention includes a head body and a face member. The face member includes a front portion forming portion which forms the front portion of a sole portion. The head body includes a sole forming portion thicker than the front portion forming portion. The end surface of the sole forming portion on the side of a face portion includes a lower region attached to the end surface of the front portion forming portion on the back side, and an upper region above the lower region. An elastic body is disposed in the gap between the upper region and the back surface of the face member. | 06-13-2013 |
20130158204 | RUBBER COMPOSITION FOR GOLF BALLS, AND METHOD OF MANUFACTURING GOLF BALLS - One-piece golf balls or golf ball cores are obtained by molding and vulcanizing a rubber composition which includes (A) a polybutadiene-containing base rubber and (B) methacrylic acid. By including in the rubber composition (C) from 0.1 to 0.5 part by weight of a maleimide per 100 parts by weight of component A, the vulcanization time during molding and vulcanization is shortened, which enhances productivity without altering the performance and properties of the molded and vulcanized material. | 06-20-2013 |
20130172107 | SOLID GOLF BALL - The invention provides a solid golf ball having a core and a cover. The core is formed of a rubber composition containing a base rubber, a co-crosslinking agent, a crosslinking initiator and a metal oxide. The co-crosslinking agent is methacrylic acid, and the rubber composition includes a specific waste material in the form of a powder. The core deflection and the cover material are optimized. Utilizing a waste material in a solid golf ball conserves resources and thus is beneficial to the global environment. Even during prolonged use, the golf ball maintains its basic performance attributes (feel, flight, durability) at a high level. | 07-04-2013 |
20130172108 | SOLID GOLF BALL - The invention provides a solid golf ball having a core and a cover. The core is formed of a rubber composition containing a base rubber, a co-crosslinking agent, a crosslinking initiator and a metal oxide. The base rubber contains polybutadiene, a styrene-butadiene rubber and, optionally, an isoprene rubber. The co-crosslinking agent is methacrylic acid, and the rubber composition includes a specific waste material in the form of a powder. The core deflection and the cover material are optimized. Utilizing a waste material in a solid golf ball conserves resources and thus is beneficial to the global environment. Even during prolonged use, the golf ball maintains its basic performance attributes (feel, flight, durability) at a high level. | 07-04-2013 |
20130172461 | RUBBER COMPOSITION FOR GOLF BALL - The invention provides a rubber composition for golf balls which includes: (A) a base rubber containing a polybutadiene having a cis-1,4 bond content of at least 60 wt %; (B) an unsaturated carboxylic acid and/or a metal salt thereof; (C) an anthranilic acid derivative of the general formula | 07-04-2013 |
20130196785 | GOLF CLUB HEAD - This invention provides a golf club head to which a damping member is attached. The damping member is formed by combining a plurality of materials including at least a resin material and a damping alloy. Alternatively, the damping member is formed by combining a plurality of materials including at least a resin material and a magnetic material. | 08-01-2013 |
20130196788 | GOLF BALL WITH RFID SYSTEM - A golf ball has a radio-frequency identification (RFID) circuit for storing ID information therein, the RFID circuit formed of conductive ink; and an antenna for communicating by using radio frequency signals, the antenna connected to the RFID circuit. The antenna may be formed of conductive ink or paste. The RFID circuit and the antenna may be formed on the surface of the golf ball. The golf ball may further include a core layer, a cover layer disposed on the outside of the core layer, and optionally, an intermediate layer disposed between the core layer and the cover layer. The core or intermediate layer has a groove on the surface thereof, and the RFID circuit and the antenna may be formed within the groove. | 08-01-2013 |
20130196790 | MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball having a solid core, an inner cover layer and an outer cover layer, which outer cover layer has numerous dimples on a surface thereof. The ball is characterized both in that the core and the inner cover layer are formed so as to have a specific deflection ratio therebetween, and also by the combination of an inner cover layer formed to a specific material hardness and thickness, an outer cover layer formed to a specific material hardness, and dimples which satisfy specific conditions. This multi-piece solid golf ball is able to substantially reduce the distance traveled by the ball when struck at a high head speed, while at the same time holding down the decrease in distance when struck at a low head speed. | 08-01-2013 |
20130196792 | SYSTEM FOR PROVIDING INFORMATION ON PLAYING GOLF - A system for providing information on playing golf includes: an input unit; a processing unit that receives input information from the input unit and calculates output information concerning playing golf; and a display unit portable by a golf player that displays the output information. The input information may be a current position of a golf ball of the golf player. The golf ball may include an RFID system storing information concerning the golf ball. The input unit may include a reading unit for reading the information stored in the RFID system without any contact from the golf ball, and the information read by the reading unit is shown on the display unit. The system may include a data receiver that receives information dispatched by other player via a network. The system may include a data transmitter that transmits information dispatched by the golf player via a network. | 08-01-2013 |
20130197138 | RUBBER COMPOSITION FOR GOLF BALL - Rubber composition for golf balls which includes: (A) a base rubber containing a polybutadiene having a cis-1,4 bond content of at least 60 wt %; (B) an unsaturated carboxylic acid and/or a metal salt thereof; (C) an anthranilic acid derivative of the general formula | 08-01-2013 |