| Patent Number |
Title Of Patent |
Date Issued |
| 6123534 |
Golf ball mold |
September 26, 2000 |
| A golf ball mold includes a pair of mold sections which are removably mated along a parting surface to define a spherical cavity by their concave surfaces. The concave surfaces are provided with a plurality of dimple-forming projections. Some dimple-forming projections are integrally |
| 6120392 |
Golf ball |
September 19, 2000 |
| In a golf ball comprising a core, an intermediate layer, and a cover, the intermediate layer is formed mainly of a heated mixture of (A) a thermoplastic polyether ester elastomer having a Shore D hardness of 25-50, a tan.delta. value of 0.01-0.1 in the temperature range of -10.degree |
| 6119763 |
Method for preparing golf ball mold |
September 19, 2000 |
| A golf ball mold is prepared by inserting a dimpled hemispherical male die into a chamber in a frame, admitting hot liquid wax into the chamber, cooling and curing the wax to form a wax shape, covering the wax shape with a mix slurry of ceramic particles and a binder, drying and curing t |
| 6117026 |
Multi-piece solid golf ball |
September 12, 2000 |
| A multi-piece solid golf ball includes an inner sphere (1), at least one enclosure layer (2), a cover inner layer (4), and a cover outer layer (5). The inner sphere has a deflection of 3.5-8.0 mm under a load of 100 kg. The enclosure layer is formed of an ionomer resin with a high acid |
| 6106415 |
Multi-layer structure solid golf ball |
August 22, 2000 |
| A multi-layer structure solid golf ball is composed of a solid core (2), an intermediate layer (3), and a cover (4). An adhesive layer (5) is interposed between the intermediate layer (3) and the cover (4). The intermediate layer may be formed from an ionomer or a urethane resin, or a |
| 6095932 |
Wound golf ball |
August 1, 2000 |
| In a wound golf ball comprising a solid center, thread rubber winding and a cover, the cover is formed to a multilayer structure including an outer layer having a specific gravity of 0.95-1.2 and an inner layer having a higher hardness than said outer layer and a specific gravity of 1.1- |
| 6093360 |
Golf ball injection mold and method for injection molding golf balls |
July 25, 2000 |
| An injection mold includes a pair of mold sections which are removably mated to define a spherical cavity by their concave surfaces, support pins disposed in the mold sections for movement into and out of the cavity, and gates connected to the cavity for feeding a cover molding material |
| 6089847 |
Golf ball injection mold |
July 18, 2000 |
| A golf ball injection mold defines a spherical cavity therein. A parting plane is situated substantially at an equator of the cavity. A plurality of gates are disposed nearly along the equator. At least one gate is disposed nearly at a position corresponding to the cavity's north pole an |
| 6071201 |
Solid golf ball |
June 6, 2000 |
| A solid golf ball comprises a solid core and a cover. The solid core has a multilayer construction with an inner core layer and an outer core layer. The inner core layer is composed primarily of a resin, and has a diameter of 15-25 mm and a Shore D hardness of 55-90. The outer core layer |
| 6066054 |
Golf ball |
May 23, 2000 |
| A golf ball includes an outer cover having a high hardness and an inner cover having a low hardness. Projections are formed on the inner surface of the outer cover, and corresponding depressions are formed in the outer surface of the inner cover. The inner and outer covers are bonded whi |
| 6063869 |
Golf ball |
May 16, 2000 |
| In a golf ball comprising a core and a cover, the cover is predominantly constructed of a blend of (A) a coordination ionic copolymer of a divalent metal ion crosslinked form of an ethylene/unsaturated carboxylic acid/unsaturated carboxylate terpolymer and an amine compound and (B) a |
| 6063859 |
Coating composition for golf ball and golf ball using the same |
May 16, 2000 |
| A coating composition for a golf ball which comprises a non-yellowing polyisocyanate and a hydroxyl group-containing polyester obtained by reacting a polyhydric alcohol, at least a part of which has an alicyclic structure in the molecule, with a polybasic acid component, and a golf b |
| 6056650 |
Multi-piece solid golf ball |
May 2, 2000 |
| In a multi-piece solid golf ball comprising a solid core and a cover with a multilayer construction including an innermost layer, an intermediate layer, and an outermost layer having a plurality of dimples on the surface thereof, the innermost and outermost layers each have a Shore D har |
| 6054550 |
Wound golf ball |
April 25, 2000 |
| A thread-wound golf ball includes a core having a center ball and a rubber thread layer and a cover. The cover of the ball has a two-layer structure consisting of an inner layer and an outer layer, each made from differing cover stock formulations of thermoplastic polyurethane elastomer. |
| 6051654 |
Golf ball |
April 18, 2000 |
| A solid golf ball includes a cover which is mainly formed from a resin blend of (a) 50-90% by weight of a salt of an ethylene-unsaturated carboxylic acid copolymer having an unsaturated carboxylic acid content of 10 to 20% by weight wherein at least 20 mol % of the carboxyl group is |
| 6050803 |
Golf ball mold |
April 18, 2000 |
| A golf ball mold includes a pair of mold sections which are removably mated to define a spherical cavity therein, a plurality of support pins for supporting a core at the center of the cavity, and a degassing pin. At least one of the pins is provided at its distal end face with a project |
| 6048279 |
Golf ball |
April 11, 2000 |
| Disclosed is a golf ball including a metallic layer disposed between an inner core and an outer core. The distance between the center of the inner core and the inner surface of the metallic layer is not greater than 15 mm, and the weight of the metallic layer is 0.2 g to 4.0 g. The metal |
| 6045461 |
Two-piece solid golf ball |
April 4, 2000 |
| A two-piece solid golf ball comprising a solid core and a cover has a specific gravity of 1.0-1.1. The cover has a Shore D hardness of at least 60. The ball satisfies 1.10.ltoreq.A/B.ltoreq.1.60 wherein A and B are distortions (mm) of the solid core and the ball under a load of 100 kg, |
| 6045460 |
Multi-piece solid golf ball |
April 4, 2000 |
| An object is to provide a multi-piece solid golf ball comprising an inner sphere, an enclosure layer, an inner cover, and an outer cover wherein the respective layers are optimized as well as the weight and inertia moment of the ball so that the ball may have improved flight performance, |
| 6044970 |
Golf instrument |
April 4, 2000 |
| An object of the invention is to provide a golf instrument which attractively displays the appearance and quality of golf tools such as golf balls. This is achieved with a golf instrument comprising a golf tool or golf tool package having a hologram wherein there is formed an irregul |
| 6042483 |
Method of measuring motion of a golf ball |
March 28, 2000 |
| There is disclosed a method of measuring the motion of a golf ball. The passing of a club head to hit a ball is detected by a sensor. A detection signal is sent from the sensor to a trigger section of a control unit. In response to the detection signal, shutter signals are sent from the |
| 6039660 |
Golf ball |
March 21, 2000 |
| In a golf ball having a multiplicity of dimples of circular plane shape on its surface, the dimples include plural types of dimples having different diameters. The dimples of at least one type are formed to at least two different cross-sectional shapes. A three-dimensionally appropriate |
| 6037419 |
Golf ball |
March 14, 2000 |
| The invention provides a golf ball comprising a core and a cover of inner and outer layers. The inner cover layer is mainly formed of a diamine complex ionomer resin obtained by reacting a divalent metal ion crosslinked form of an olefin-unsaturated carboxylic acid copolymer with an |
| 6034182 |
Golf ball cover stocks and golf balls |
March 7, 2000 |
| In a resin blend consisting essentially of (A) 90-10% by weight of an ionomer resin and (B) 10-90% by weight of a copolymer of ethylene and an .alpha.-olefin of at least 4 carbon atoms having a specific gravity of 0.86-0.92 and a dispersity (Mw/Mn) of up to 2.5, (C) a polyolefin having a |
| 6033611 |
Method for preparing golf balls using an injection mold |
March 7, 2000 |
| In preparing a golf ball comprising an inner cover (8) and an outer cover (13) around a core (5), an injection mold is used for the injection molding of the inner cover. The mold has a molding surface defining a cavity (4) and a plurality of opposed support pins (6) adapted to be moved |
| 6031933 |
Method and apparatus for inspecting the outer appearance of a golf ball |
February 29, 2000 |
| The outer appearance of a golf ball (1) having a multiplicity of dimples (9) in its surface is inspected for detecting a defect (10) on the ball surface, by illuminating light to the golf ball (1), rotating the golf ball at a constant speed in one direction, operating a line sensor camer |
| 6029377 |
Athletic shoe |
February 29, 2000 |
| An athletic shoe has a sole composed of an inner layer and an outer layer that comes into contact with the ground surface. In the athletic shoe, a plurality of downward projecting projections are formed on the lower surface of the outer layer as parts of the outer layer, and a ring-shape |
| 6024551 |
Injection mold for golf balls |
February 15, 2000 |
| Golf balls are prepared using an injection mold defining a spherical cavity and having a plurality of gates for admitting a molding material into the cavity therethrough. The gates are arranged such that the maximum flow distance that the molding material admitted from each gate moves al |
| 6022279 |
Golf ball |
February 8, 2000 |
| In a golf ball colored other than white, the color tone thereof as represented in accordance with the CIELAB color system has an L value of not less than 80, an a value of -30 to +30, and a b value of -30 to +30. The golf ball is preferably colored blue, green, pink, yellow, or orange. |
| 6021590 |
Elastic spikes and sports shoes with the elastic spikes |
February 8, 2000 |
| A spike for a sole is provided with a pin and a receiving portion for receiving a rear end portion of the pin, an elastic member is provided between the rear end portion of the pin and the receiving portion, a sports shoe having elastic spikes is also provided with the sole, and the |
| 5997416 |
Golf ball |
December 7, 1999 |
| A golf ball includes a hollow core formed of a material having a specific gravity of 1.05-1.25 and having a concentric spherical inner cavity, a cover formed on the outer surface of the hollow core, and a resin layer applied onto the inner surface of the hollow core and having a thicknes |
| 5994472 |
Ionomer covered golf ball |
November 30, 1999 |
| In a golf ball comprising a core and a cover, the cover is mainly composed of a resin consisting of a first ionomer in the form of a sodium neutralized ethylene/methacrylic acid/acrylate terpolymer having a flexural modulus of 1,000 to 15,000 psi and a second ionomer in the form of a |
| 5993968 |
Wound golf ball |
November 30, 1999 |
| A thread-wound golf ball includes a core having a center ball and a rubber thread layer and a cover. The cover is composed primarily of a thermoplastic polyurethane elastomer of an aliphatic and/or alicyclic diisocyanate. The golf ball is prepared by impregnating the rubber thread la |
| 5993332 |
Solid golf ball |
November 30, 1999 |
| A solid golf ball comprising a solid core and a cover has a multiplicity of dimples in its surface. The core undergoes a distortion of 2.8-4.0 mm under a load of 100 kg. The distortion (mm) of the core under a load of 100 kg divided by the distortion (mm) of the ball under a load of 100 |
| 5985370 |
Surface treatment of golf balls |
November 16, 1999 |
| Prior to paint coating, a golf ball is surface treated with a surface treating agent comprising a silane coupling agent of the formula: (RO).sub.a --Si--(X).sub.b wherein R is alkyl, X is a monovalent hydrocarbon group, letters a and b are integers of 1 to 3, satisfying a+b=4 and opt |
| 5984805 |
Golf ball |
November 16, 1999 |
| A golf ball includes a spherical outer-layer core having a concentric spherical inner cavity and having a wall thickness of 5-10 mm. A spherical inner-layer core having a diameter smaller than that of the spherical cavity is disposed within the spherical cavity of the outer-layer core. A |
| 5980232 |
Golf ball mold, master model and method of making the mold and model |
November 9, 1999 |
| 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. A master model is prepared by feeding a cutter into a hemispherical surface of a master block to different depths w |
| 5977264 |
Golf ball |
November 2, 1999 |
| The invention provides a golf ball comprising a solid core, an intermediate layer, and a cover. The cover is formed of a diamine complex ionomer resin having a flexural rigidity of 340-410 MPa. The intermediate layer is formed of an ionomer resin or non-ionomer thermoplastic elastomer ha |
| 5976430 |
Method for separating and removing covers from golf balls and for recycling golf balls |
November 2, 1999 |
| There are disclosed a method and an apparatus for removing a cover from a golf ball. There is used a pair of geared rolls in an engaged manner, each geared roll comprising a cylindrical shaft on which teeth are axially formed and are circumferentially arranged at predetermined pitches. A |
| 5976035 |
Wound golf ball |
November 2, 1999 |
| A wound golf ball has a wound core enclosed with a multilayer cover. The wound core consists of a center ball and a thread rubber layer. The multilayer cover includes an inner layer, an outer layer, and an adhesive layer therebetween. The adhesive layer forms a firm joint between the |
| 5975869 |
Golf ball mold having adjustable pimple forming pins |
November 2, 1999 |
| A golf ball mold includes a pair of split mold sections which are removably mated to define a spherical cavity. The cavity surfaces are provided with a plurality of dimple-forming protrusions. Some of the dimple-forming protrusions are constructed by dimple-forming pins whose inner end h |
| 5967908 |
Golf ball |
October 19, 1999 |
| A golf ball includes a solid core, an intermediate layer, and a cover having dimples formed therein. The core has a Shore D hardness at the surface of 30-48, the intermediate layer has a Shore D hardness of 53-60, and the cover has a higher Shore D hardness of 55-65. In the cover, 370 to |
| 5966213 |
Method and apparatus for measuring the surface shape of a golf ball |
October 12, 1999 |
| There are disclosed a method and an apparatus for measuring the surface shape of a golf ball. A positional relationship detection process is performed by radiating laser light from the light generation section onto the surface of the golf ball at a predetermined position and receiving, |
| 5961401 |
Golf balls |
October 5, 1999 |
| A golf ball is composed of at least a pair of adjacent concentric solid layers or three adjacent concentric solid layers. In the former case, the outer solid layer is composed of a matrix and non-metallic high-hardness grains having hardness higher than that of the matrix which has a Sho |
| 5957785 |
Golf balls with defined coating layer |
September 28, 1999 |
| A golf ball has a coating layer formed by dispersion coating at the surface portion thereof. For example, a two-piece golf ball is produced by enclosing a solid core with a cover material; forming, by dispersion coating, a white coating layer made of a thermoplastic resin on the surf |
| 5947844 |
Golf ball and mold therefor |
September 7, 1999 |
| A golf ball having a plurality of dimples on its spherical surface molded by a mold which has a spherical cavity therein and is composed of a pair of mold sections being removably mated along with a parting surface at the position corresponding to an equator line of the spherical cavity |
| 5935023 |
Golf ball |
August 10, 1999 |
| A golf ball having a plurality of dimples on its surface, the dimples including dimples which are different in diameter and/or depth, the total number of dimples is 392 to 432, and the golf ball has a percent dimple surface area occupation of 77 to 82%, a percent dimple volume occupation |
| 5935021 |
Golf ball |
August 10, 1999 |
| A golf ball having a cover is provided. The cover is formed of a cover stock comprising a thermoplastic resin or elastomer and fibrous aluminum borate whiskers. The cover is durably resistant to damages by iron shots. |
| 5929189 |
Golf ball |
July 27, 1999 |
| A golf ball comprises a core and a cover enclosing the core. The cover resin is composed mainly of a thermoplastic polyurethane elastomer having an aliphatic diisocyanate component and exhibiting a tan .delta. peak temperature of not higher than -20.degree. C. in viscoelasticity meas |
| 5916044 |
Golf ball |
June 29, 1999 |
| A golf ball defines a dimple spherical surface having a diameter of not greater than 42.66 mm and formed with a plurality of protrusions. The ball is unable to pass through a ring gage having an inner diameter of 42.67 mm. |
