Particular Unitary Or Layered Construction Patents (Class 473/371)
  • Patent number: 10661125
    Abstract: The invention provides a golf ball having a core and a cover of one or more layer encasing the core, wherein the core has a center core and a foamed outer layer that directly, or indirectly through another layer, envelops the center core. The foamed outer layer is made of a rubber composition that includes a base rubber, a co-crosslinking agent and an organic peroxide. The foamed outer layer has an inside portion facing the ball center and an outside portion facing the outside of the ball that are unfoamed regions, and contains a foamed region in an intermediate portion therebetween. A method of manufacturing such a golf ball is also provided.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: May 26, 2020
    Assignee: Bridgestone Sports Co., Ltd.
    Inventors: Jun Shindo, Tsuyoshi Nakajima
  • Patent number: 10543402
    Abstract: An object of the present invention is to provide a golf ball showing low spin rate on driver shots and high spin rate on approach shots. The present invention provides a multi-piece golf ball comprising a spherical center, at least two envelope layers covering the spherical center, and a cover covering the envelope layers, wherein the envelope layers comprise at least a first envelope layer covering the spherical center, and a second envelope layer covering the first envelope layer, a material hardness (H0) of the spherical center, a material hardness (H1) of the first envelope layer, and a material hardness (H2) of the second envelope layer satisfy an equation of H0>H1>H2, and the material hardness (H2) of the second envelope layer is lowest among the material hardness of the center constituent material and material hardness of envelope layer constituent materials.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: January 28, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Takahiro Shigemitsu, Hidetaka Inoue
  • Patent number: 10486031
    Abstract: An object of the present invention is to provide a golf ball traveling a great distance on driver shots.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: November 26, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Kohei Mimura, Takahiro Sajima, Kosuke Tachibana
  • Patent number: 10465072
    Abstract: Golf ball comprising at least one layer consisting of a double network cross-linked composition comprising a mixture of a base thermoplastic polymer composition and a double network polymer composition. The double network polymer composition comprises a plurality of particulates of a polymer composition that is elongated from 10% to 200%, or at least 50%, or at least 100% or at least 150% or 200% or greater during a partial cure state.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: November 5, 2019
    Assignee: Acushnet Company
    Inventors: David A. Bulpett, Brian Comeau
  • Patent number: 10465070
    Abstract: Golf ball comprising at least one layer consisting of a double network cross-linked composition comprising a mixture of a base thermoset polymer composition and a double network polymer composition. The double network polymer composition comprises a plurality of particulates of a polymer composition that is elongated from 10% to 200%, or at least 50%, or at least 100% or at least 150% or 200% or greater during a partial cure state.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: November 5, 2019
    Assignee: Acushnet Company
    Inventors: David A. Bulpett, Brian Comeau
  • Patent number: 10441853
    Abstract: In a multi-piece solid golf ball having a core and four successive layers encasing the core—an inner envelope layer, an outer envelope layer, an intermediate layer and a cover, the inner envelope, outer envelope and intermediate layer are each formed of different highly neutralized resin materials, and the cover thickness is larger than the respective thicknesses of the inner envelope layer, outer envelope layer and intermediate layer. Also, the value (A)?(B) obtained by subtracting the material hardness (B) of the softest layer among the inner envelope layer, outer envelope layer and intermediate layer from the material hardness (A) of the cover is a Shore D hardness of 13 or more. This golf ball holds down the spin rate on full shots with a driver by amateur golfers having modest head speeds, and also has a soft and good feel at impact.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: October 15, 2019
    Assignee: Bridgestone Sports Co., Ltd.
    Inventor: Hideo Watanabe
  • Patent number: 10427008
    Abstract: Golf balls comprising a multi-layer core and a cover are disclosed. The multi-layer core comprises at least one intermediate core layer formed from a composite composition comprising functionalized nano-structures. The functionalized nano-structures may be selected from the group consisting of functionalized polymer nano-structures, functionalized metallic nano-structures, and functionalized elemental nano-structures. For example, the functionalized nano-structures may comprise functionalized graphene, functionalized carbon nanotube, and/or functionalized polyamide nano-fiber. The functionalized nano-structures may be mixed/blended or otherwise combined with conductive nanoshelled structures in the composite composition.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: October 1, 2019
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Mark L. Binette, Brian Comeau
  • Patent number: 10427003
    Abstract: Golf ball having CoR of at least 0.700 and Atti compression of at least about 50 and comprising layer consisting of mixture of thermoset or thermoplastic composition and plurality of particulates, at least a portion surface-treated with alkoxylated siloxanes and/or polyether-modified siloxanes, and may be selected from titanium dioxide particles, barium sulfate particles, zinc sulfide particles, and/or zinc oxide particulates. At least some particulates are contacted with compound having the formula: Compound (I) may be included in amount of 0.01 to 2% by weight based on total weight of portion of plurality being contacted. The plurality may be included in mixture in amount such that layer has specific gravity of from 0.5 to about 10.0, tensile strength of from about 300 psi to about 50,000 psi, and elongation at break of from about 20% to about 1000%, each being greater than that of the thermoset or thermoplastic composition portion of the mixture.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: October 1, 2019
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Brian Comeau, Michael Michalewich
  • Patent number: 10376748
    Abstract: A golf ball comprising a core and a cover layer, wherein at least one of the core or cover layer comprises a plasticized polyurethane composition comprising at least one polyurethane and at least one plasticizer.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: August 13, 2019
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, David A Bulpett, Robert Blink, Mark L. Binette, Brian Comeau
  • Patent number: 10350458
    Abstract: An object of the present invention is to provide a golf ball traveling a great distance on driver shots. The present invention provides a golf ball comprising a spherical core including an inner layer and an outer layer, wherein a difference (HX+1?HX?1) between a hardness (HX+1) at a point outwardly away in a radial direction from a boundary between the inner layer and the outer layer of the spherical core by 1 mm and a hardness (HX?1) at a point inwardly away in the radial direction from the boundary between the inner layer and the outer layer of the spherical core by 1 mm is 0 or more in Shore C hardness, a surface hardness (HX+Y) of the spherical core is more than 70 in Shore C hardness, an angle ? of a hardness gradient of the inner layer is 0° or more, and a difference (???) between the angle ? and an angle ? of a hardness gradient of the outer layer is 0° or more.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: July 16, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Kosuke Tachibana, Kazuya Kamino
  • Patent number: 10343020
    Abstract: A golf ball (2) includes a core (4), an inner cover (6), a main cover (8), and an outer cover (10). X=Hc×Rc×0.05, S=Hs×Rc×0.05, M=Hm×Tm, I=Hi×Ti, O=Ho×To, and Q=(I+O)/2 that are calculated from a radius Rc of the core (4), a Shore C hardness Hc at a central point of the core (4), a Shore C hardness Hs at a surface of the core (4), a thickness Tm of the main cover (8), a Shore C hardness Hm of the main cover (8), a thickness Ti of the inner cover (6), a Shore C hardness Hi of the inner cover (6), a thickness To of the outer cover (10) and a Shore C hardness Ho of the outer cover (10), satisfy 15?M?S?100, 0.25<Q/M<0.5, ?10?I?O?30, and Q/X<0.8.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: July 9, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Hironori Takihara, Takahiro Sajima
  • Patent number: 10343019
    Abstract: Multi-piece golf balls containing a dual-core structure are provided. The core structure includes an inner core (center) comprising a foam composition, preferably foamed polyurethane. The outer core layer is preferably formed from a non-foamed thermoset composition such as polybutadiene rubber. The inner and outer core layers can have different hardness gradients. Preferably, the specific gravity (density) of the foam inner core is less than the density of the outer core layer. The ball further includes a cover of at least one layer and may include at least one casing layer. The core structure and resulting ball have relatively good resiliency.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: July 9, 2019
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Derek A. Ladd, Mark L. Binette, Brian Comeau, Michael Michalewich, Shawn Ricci
  • Patent number: 10335642
    Abstract: A golf ball (2) includes a core (4), an inner cover (6), a main cover (8), and an outer cover (10). X=Hc×Rc×0.05, S=Hs×Rc×0.05, M=Hm×Tm, I=Hi×Ti, O=Ho×To, and Q=(I+O)/2 that are calculated from a radius Rc of the core (4), a Shore C hardness Hc at a central point of the core (4), a Shore C hardness Hs at a surface of the core (4), a thickness Tm of the main cover (8), a Shore C hardness Hm of the main cover (8), a thickness Ti of the inner cover (6), a Shore C hardness Hi of the inner cover (6), a thickness To of the outer cover (10) and a Shore C hardness Ho of the outer cover (10), satisfy 15?M?S?100, 0.25<Q/M<0.5, ?10?I?O?30, and Q/X?0.8.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: July 2, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Takahiro Sajima, Hironori Takihara
  • Patent number: 10328313
    Abstract: Golf balls comprising a multi-layer core and a cover are disclosed. The multi-layer core comprises at least one intermediate core layer formed from a metallic, composite, or inorganic/organic hybrid composition.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: June 25, 2019
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Edmund A. Hebert, Mark L. Binette, Brian Comeau
  • Patent number: 10300344
    Abstract: In order to satisfy at a high level the golf ball flight and control performances relied on by professional golfers and skilled amateurs, this invention provides a multi-piece solid golf ball G having a core 1, a cover 3 and an intermediate layer 2 therebetween wherein, letting Hc be the JIS-C hardness at a center of the core, H12 be the JIS-C hardness at a position 12 mm from the core center and Ho be the JIS-C hardness at a surface of the core, the core has a hardness profile which satisfies the condition (Ho?H12)?(H12?Hc)?10; letting (Ho?H12)?(H12?Hc) above be A, the spin index of the ball, defined as the dynamic coefficient of friction of the ball multiplied by A, is at least 3.0; and the hardness profile index, defined as the deflection (mm) of the core when compressed under a final load of 1,275 N (130 kgf) from an initial load of 98 N (10 kgf) multiplied by A, is at least 40.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: May 28, 2019
    Assignee: Bridgestone Sports Co., Ltd.
    Inventors: Akira Kimura, Toru Ogawana, Katsunobu Mochizuki
  • Patent number: 10293217
    Abstract: A multi-piece solid golf ball having a two-layer core with an inner core layer and an outer core layer and having a cover of one or more layer with numerous dimples on the surface is characterized in that the hardest cover layer has a specific material hardness and the ball has a specific value obtained by subtracting the surface hardness of the overall core from the surface hardness of the hardest cover layer, a specific deflection, and a specific value obtained by subtracting the initial velocity of the inner core layer from the initial velocity of the sphere consisting of the inner core layer encased by the outer core layer. This golf ball enables relatively low head speed golfers to achieve a good distance on full shots with drivers and iron clubs and also provides a soft, comfortable feel at impact.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: May 21, 2019
    Assignee: Bridgestone Sports Co., Ltd.
    Inventors: Katsunori Sato, Hideo Watanabe
  • Patent number: 10279221
    Abstract: In a golf ball having a core and a cover of one or more layers, letting the core diameter be D (mm), the cover thickness be T (mm) and the core and ball deflections when compressed under a final load of 1,275 N (130 kgf) from an initial load state of 98 N (10 kgf) be E (mm) and B (mm), the following conditions are satisfied: (1) 30?D/T?24, (2) 4.1?E/T?2.6, and (3) 1.18?EIB?1.09, and the core has specific hardness profile. This golf ball provides an excellent flight performance and a soft feel at impact when used by golfers whose head speed is not very fast, such as senior golfers and women golfers. The ball also has a high durability to cracking on repeated impact.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: May 7, 2019
    Assignee: Bridgestone Sports Co., Ltd.
    Inventor: Hideo Watanabe
  • Patent number: 10252115
    Abstract: Golf ball comprising a core having a hardness gradient and an outer cover layer having a microhardness gradient and being formed from a thermoset polyurethane material throughout, and having: i) a treated region that is contacted with a thermoset polyurethane microhardness-increasing solution consisting of an isocyanate portion and at least one non-aqueous solvent; and ii) an untreated region that is not contacted with the thermoset polyurethane microhardness-increasing solution. The treated region comprises the isocyanate portion, whereas the untreated region does not comprise the isocyanate portion. Treated region has a microhardness M1 that is greater than microhardness M2 of untreated region to define the outer cover layer positive microhardness gradient ?M=M1?M2. The treated region may have a depth Dtr that extends inward from the cover outer surface and in some embodiments is less than a thickness of the untreated region.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: April 9, 2019
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Brian Comeau, Michael Michalewich, Mark L. Binette
  • Patent number: 10245470
    Abstract: The present invention provides a golf ball comprising an inner core and an outer cover layer, wherein at least one of the inner core and outer cover layer is formed from a thermoplastic polyurethane ionomer.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: April 2, 2019
    Assignee: Acushnet Company
    Inventors: Mark L. Binette, Michael J. Sullivan, Robert Blink, Brian Comeau, David A. Bulpett
  • Patent number: 10227474
    Abstract: The present invention relates to the use of a fatty acid (meth)acrylic acid salt in a golf ball layer. The fatty acid (meth)acrylic acid salt may be added to one or more portions of a golf ball including a core, intermediate, or cover layer. For example, in one embodiment, the fatty acid (meth)acrylic acid salt may be blended with a polybutadiene rubber material. In another embodiment, the fatty acid (meth)acrylic acid salt of the present invention may be blended with an ionomer. In some embodiments, the fatty acid (meth)acrylic acid salt may be blended with a formulation including both a polybutadiene rubber component and an ionomer.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: March 12, 2019
    Assignee: Acushnet Company
    Inventors: Brian Comeau, Michael J. Sullivan, Mark L. Binette
  • Patent number: 10220265
    Abstract: The present invention is directed to a metallized golf ball possessing a masked section and methods for achieving a metallized golf ball possessing a masked section. The invention provides a golf ball masking stand, which effectively masks a portion of a golf ball, allowing coatings to be applied to the golf ball, while preventing coating of the masked section. Alternative masking techniques are disclosed, including the use of labels, double-stick tape, and printing methods to create a masked section. Preferably, metallization of the golf ball is achieved using physical vapor deposition and preferably a hydrophobic protective coating is applied to the metal layer inside the metallizing chamber.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: March 5, 2019
    Inventor: John F Feeley
  • Patent number: 10188910
    Abstract: An object of the present invention is to provide a golf ball having an excellent flight performance on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover covering the spherical core, wherein a hardness difference D1 (H75?H0) between a hardness H75 at a point located at a distance of 75% of a core radius from a center of the spherical core and a center hardness H0 of the spherical core is 15 or more and 35 or less in Shore C hardness, a hardness difference D2 (Hs?H75) between a surface hardness Hs of the spherical core and the hardness H75 at the point located at the distance of 75% of the core radius from the center of the spherical core is ?1 or more and 3.5 or less in Shore C hardness, and a hardness difference D3 ((H0+H75)/2?H37.5) between a hardness of (the center hardness H0 of the spherical core+the hardness H75 at the point located at the distance of 75% of the core radius from the center of the spherical core)/2 and a hardness H37.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: January 29, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Chiemi Mikura, Kazuyoshi Shiga, Hikaru Nagakura, Ryota Sakamine
  • Patent number: 10112081
    Abstract: Golf ball comprising a positive hardness gradient core and an outer cover layer having a microhardness gradient and being formed from a thermoset polyurethane material throughout, and having: i) a treated region that is contacted with a thermoset polyurethane microhardness-increasing solution consisting of an isocyanate portion and at least one non-aqueous solvent; and ii) an untreated region that is not contacted with the thermoset polyurethane microhardness-increasing solution. The treated region comprises the isocyanate portion, whereas the untreated region does not comprise the isocyanate portion. Treated region has a microhardness M1 that is greater than microhardness M2 of untreated region to define the outer cover layer positive microhardness gradient ?M=M1?M2. The treated region may have a depth Dtr that extends inward from the cover outer surface and in some embodiments is less than a thickness of the untreated region.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: October 30, 2018
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Brian Comeau, Michael Michalewich, Mark L. Binette
  • Patent number: 10052525
    Abstract: A golf ball comprising an inner core layer including a thermoplastic material and having a geometric center hardness less than the surface hardness to define a positive hardness gradient. An outer core layer is formed over the inner core. The outer core includes a thermoset rubber composition and has an inner surface hardness less than an outer surface hardness to define a positive hardness gradient. A cover layer is formed over the outer core layer. The cover layer includes an inner cover layer and an outer cover layer. The thermoplastic material of the core includes an acid copolymer of ethylene and an ?,?-unsaturated carboxylic acid, optionally a softening monomer comprising alkyl acrylate or methacrylate; a plasticizer; an organic acid or salt thereof; and a cation source present in an amount sufficient to neutralize from about 70 to about 100% of all acid groups present in the material.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: August 21, 2018
    Inventors: Michael J. Sullivan, Mark L. Binette, Robert Blink, David Bulpett, Brian Comeau
  • Patent number: 10046209
    Abstract: Multi-piece golf balls having a multi-layered solid core and multi-layered cover are provided.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: August 14, 2018
    Assignee: Acushnet Company
    Inventor: Michael J. Sullivan
  • Patent number: 10022954
    Abstract: A method for printing an image at multiple positions on a golf ball is disclosed herein. The plurality of locations for the image is preferably ten. The image is preferably a pentagon. The image is alternatively a hexagon or a circle.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: July 17, 2018
    Assignee: Callaway Golf Company
    Inventors: Dave Melanson, Peter Molitor
  • Patent number: 10010763
    Abstract: A golf ball with a clay coating disposed an interior surface of the golf ball and a method is disclosed herein. The clay coating is preferably a nano-clay coating which is deposited on a core surface or a mantle surface of the golf ball. The nano-clay coating is preferably dispersed into the interior layer.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: July 3, 2018
    Assignee: Callaway Gold Company
    Inventor: Hong G. Jeon
  • Patent number: 9993993
    Abstract: An anisotropic composite material assembly comprising a first layer with a tensile modulus different from its compressive modulus and that exhibits variable modulus behavior. The first layer elastically buckle under compressions. A second layer has a tensile modulus substantially the same as its compressive modulus. The first and second layers are joined together, and the assembly is bendable in a first direction with an outer surface of the first layer being in compression and the assembly has a first bending stiffness during bending in the first direction. The assembly is bendable in a second direction opposite the first direction with the outer surface of the first layer being in tension, and the assembly has a second bending stiffness greater than the first bending stiffness during bending in the second direction.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: June 12, 2018
    Assignee: Carbitex, Inc.
    Inventors: Kevin Lynn Simmons, Junus Ali Khan, Tyler Andre Kafentzis, Keshava Bhamidipaty
  • Patent number: 9994666
    Abstract: This invention relates to polyurethane/polyureas. These polyurethane/polyurea materials comprise the reaction product of (A) a polyisocyanate prepolymer having an NCO group content of about 4 to about 30% and an average functionality of 1.8 to 6, and (B) an isocyanate-reactive component comprising at least one aromatic diamine compound. The (A) polyisocyanate prepolymers herein comprise the reaction product of (1) at least one (cyclo)aliphatic polyisocyanate with (2) an organic compound having 1.8 to 5 hydroxyl groups and a hydroxyl equivalent weight of 150 to 2000 g/eq., and which is selected from the group consisting of OH-functional polybutadienes, OH-functional polyalkylene, OH-functional polyalkylene phthalates, OH-functional polyalkylene isophthalates, OH-functional polyalkylene terephthalates and mixtures thereof.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: June 12, 2018
    Assignee: COVESTRO LLC
    Inventors: Karl W. Haider, Wendy Gustavich, Richard R. Roesler, Rick V. Starcher
  • Patent number: 9993693
    Abstract: Multi-layered golf balls containing a dual-core structure are provided. The core structure includes an inner core (center) comprising a thermoplastic composition, preferably including: a) ethylene acid copolymer, b) plasticizer, and c) cation source. Preferably, a fatty acid ester such as ethyl oleate is used as the plasticizer. The outer core layer is preferably formed from a thermoset composition such as polybutadiene rubber. The core layers have different hardness levels. For example, the inner core can have a positive, zero, or negative hardness gradient. The core assembly preferably has a positive hardness gradient extending across the entire assembly. The core structure and resulting ball have relatively good resiliency at given compressions.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: June 12, 2018
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Mark L. Binette, Robert Blink, David A. Bulpett, Brian Comeau
  • Patent number: 9968830
    Abstract: In a multi-piece solid golf ball having a core, an envelope layer, an intermediate layer, and a cover with a plurality of dimples formed thereon, the core is formed primarily of a base rubber, the envelope layer and the intermediate layer are formed primarily of synthetic resin materials, and the cover layer is formed primarily of a urethane material. The relationships between, respectively, the surface hardnesses of the envelope layer-encased sphere and the ball, the thicknesses of the intermediate layer and the cover layer, the deflections of the core and the ball, and the initial velocities of the core and various layer-encased spheres of the ball each satisfy specific conditions. This golf ball makes it possible for amateur golfers, while maintaining a good distance on shots with a driver (W#1), to obtain a good ball controllability on approach shots and moreover experience a soft feel at impact.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: May 15, 2018
    Assignee: Bridgestone Sports Co., Ltd.
    Inventor: Hideo Watanabe
  • Patent number: 9908007
    Abstract: In a multi-piece solid golf ball having a rubber two-layer core consisting of an inner layer and an outer layer, a cover, and at least one intermediate layer therebetween, the inner core layer has a diameter of at least 30 mm, the difference in JIS-C hardness between the center of the inner core layer and the surface of the outer core layer is at least 25, the ball satisfies the relationship A/B?1.5, where A and B are the deflections of, respectively, the inner core layer and the two-layer core when compressed under specific loading conditions, and the intermediate layer has a higher material hardness than the cover. This ball enables mid- to high-level golfers both to achieve even longer distances and to maintain the spin performance on approach shots at a high level.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: March 6, 2018
    Assignee: Bridgestone Sports Co., Ltd.
    Inventors: Hideo Watanabe, Atsuki Kasashima, Katsunori Sato
  • Patent number: 9873024
    Abstract: The invention provides a golf ball having a core and a cover of at least one layer. The core has a cross-sectional hardness which, letting R (mm) be the radius of the core, A be the JIS-C hardness at a center of the core, B be the JIS-C hardness at a position R/3 mm from the core center, C be the JIS-C hardness at a position R/1.8 mm from the core center, D be the JIS-C hardness at a position R/1.3 mm from the core center, and E be the JIS-C hardness at a surface of the core, satisfies the formulas (1) D?C?7, (2) C?B?7, (3) (D?C)?(C?B)?7, and (4) E?A?16.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: January 23, 2018
    Assignee: BRIDGESTONE SPORTS CO., LTD.
    Inventors: Akira Kimura, Toru Ogawana, Ryota Nakamura, Tsuyoshi Nakajima
  • Patent number: 9821194
    Abstract: Multi-layered golf balls containing a two layered cover assembly are provided. In one embodiment, the cover assembly includes a relatively soft inner cover and relatively hard outer cover. Preferably, at least one of the cover layers is formed from a thermoplastic composition that preferably comprises: a) thermoplastic non-acid polymer, and b) plasticizer. A fatty acid ester such as ethyl oleate is preferably used as the plasticizer. Suitable non-acid polymers include, for example, polyesters, polyamides, polyolefins, and polyurethanes. The cover assembly has good impact durability and helps provide the ball with relatively high resiliency at given compressions.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: November 21, 2017
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Robert Blink, David A Bulpett, Mark L. Binette, Brian Comeau
  • Patent number: 9795835
    Abstract: Golf ball multi-layered core sub-assemblies and the resulting golf balls are provided. The core structure includes a foam inner core (center); and intermediate and outer core layers. Foamed polyurethane is preferably used to make the inner core. The intermediate and outer core layers are preferably made from non-foamed thermoplastic compositions such as ethylene acid copolymer ionomer. In an alternative version, the intermediate core layer may be made of a thermoset rubber such as polybutadiene. The core layers have different hardness and specific gravity levels. The core structure and resulting ball have relatively good resiliency.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: October 24, 2017
    Assignee: Acushnet Company
    Inventors: Michael J Sullivan, Derek A. Ladd, Mark L. Binette, Brian Comeau, Michael Michalewich, Shawn Ricci
  • Patent number: 9789367
    Abstract: A golf ball including a thermoplastic inner core layer that has a geometric center hardness greater than its surface hardness to define a negative hardness gradient. An outer core layer is disposed about the inner core and is formed from a thermoplastic material and has an inner surface hardness substantially less than its outer surface hardness to define a positive hardness gradient. An inner cover layer is disposed about the outer core layer and an outer cover layer is disposed about the inner cover layer.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: October 17, 2017
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Brian Comeau, William B. Lacy
  • Patent number: 9789368
    Abstract: A golf ball comprising a core and a cover layer, wherein at least one of the core or cover layer comprises a plasticized polyurethane composition comprising at least one polyurethane and at least one plasticizer.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: October 17, 2017
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, David A Bulpett, Robert Blink, Mark L. Binette, Brian Comeau
  • Patent number: 9764197
    Abstract: Golf balls comprising a multi-layer core and a cover are disclosed. The multi-layer core comprises at least one intermediate core layer formed from a metallic, composite, or inorganic/organic hybrid composition.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: September 19, 2017
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Edmund A. Hebert, Mark L. Binette, Brian Comeau
  • Patent number: 9764198
    Abstract: Golf balls having multi-layered covers, wherein at least one of the cover layers is substantially transparent, are provided. The cover includes an inner cover layer made of an ionomer composition; an intermediate cover layer made of an aromatic polyurethane composition; and outer cover layer made of an aliphatic polyurethane composition, wherein the total thickness of the multi-layered cover is no greater than 0.110 inches. In one version, the outer cover layer is substantially transparent and the underlying intermediate cover layer is colored. In another version, both the outer and intermediate cover layers are substantially transparent. Light-reflective fillers such as pearlescent pigments, glitter, and metallics may be added to the cover layers. The resulting ball has pleasing decorative effects.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: September 19, 2017
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Mark L. Binette
  • Patent number: 9717957
    Abstract: A golf ball comprising a core and a cover, wherein the core consists of: a solid inner core layer formed from an unfoamed thermoplastic composition and having a diameter of 1.10 inch or less and a center Shore C hardness (Hcenter) of 50 or less, one or more optional intermediate core layers, and an outer core layer formed from an unfoamed thermoset composition and having a thickness of 0.200 inches or greater and an outer surface Shore C hardness (Houter surface) of 70 or greater, wherein Houter surface>Hcenter, and Houter surface?Hcenter?40.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: August 1, 2017
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Brian Comeau, Douglas S. Goguen
  • Patent number: 9713748
    Abstract: Golf ball and method for making it, comprising a first layer that comprises a first polymeric composition and is surrounded by and adjacent to a second layer comprising a second polymeric composition different than the first polymeric composition; with one of these layers further comprising at least one silane-containing adhesion promoter such as organosilanes and/or organosiloxanes throughout in an amount of from about 0.1 wt. % to about 5.0 wt. % of the entire layer. Neither layer is surface treated with at least one silane-containing adhesion promoter. The second layer may be the layer comprising the silane-containing adhesion promoter throughout, surrounded by a third layer that comprises a third polymeric composition that differs from the second polymeric composition and does not incorporate any silane-containing adhesion promoter. Strong interlayer bonding is therefore created both between the second layer and the first layer and between the second layer and the third layer.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: July 25, 2017
    Assignee: Acushnet Company
    Inventors: Mark L. Binette, Brian Comeau, Michael Michalewich, Shawn Ricci
  • Patent number: 9694243
    Abstract: An object of the present invention is to provide a golf ball showing a low spin rate on driver shots and an excellent shot feeing. The present invention provides a golf ball having a spherical core and at least one cover covering the spherical core, wherein the spherical core is formed from a rubber composition containing: (a) a base rubber, (b) an ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator, and at least one compound of (d) mercaptobenzoic acids and/or salts thereof, provided that the rubber composition further contains (e) a metal compound in the case of containing only (b) the ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent, and the spherical core has a hardness difference (Hs?Ho) between a surface hardness (Hs) and a center hardness (Ho) thereof of 20 or more in JIS-C hardness.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: July 4, 2017
    Assignee: DUNLOP SPORTS CO. LTD.
    Inventors: Chiemi Mikura, Ayaka Shindo, Mikio Yamada
  • Patent number: 9656127
    Abstract: Multi-piece golf balls having a solid core made of a foamed composition and a cover are provided. Preferably, the core is dual-layered having has a foam inner core (center) and surrounding thermoset or thermoplastic outer core layer. Preferably, a polyurethane foam composition containing mineral filler particulate, for example, nanoclay particles, is used to form the foam center. The concentration of clay particulate is preferably in a range of 0.1 to 60% by weight. The surrounding outer core layer may be made from non-foamed or foamed compositions. For example, polybutadiene rubber or highly neutralized olefin acid copolymers may be used in the outer core layer. The core layers have different hardness gradients and specific gravity values.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: May 23, 2017
    Assignee: Acushnet Company
    Inventors: Mark L. Binette, Brian Comeau, Michael Michalewich, Shawn Ricci, Michael J. Sullivan, Douglas S. Goguen
  • Patent number: 9649538
    Abstract: A golf ball comprising a core and a cover, the core consisting of: a solid inner core layer formed from a first unfoamed thermoplastic composition TP1 and having a diameter of 1.10 inch or less and a center Shore C hardness (Hcenter) of 50 or less, one or more optional intermediate core layers, and an outer core layer formed from a second thermoplastic composition TP2 and having a thickness of 0.200 inches or greater and an outer surface Shore C hardness (Houter surface) of 70 or greater, wherein Houter surface>Hcenter, and Houter surface?Hcenter?40.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: May 16, 2017
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Brian Comeau, Douglas S. Goguen
  • Patent number: 9643061
    Abstract: A golf ball comprising a core and a cover, wherein the core consists of: a solid inner core layer formed from a plasticized non-acid polymer composition PCp/N-A and having a diameter of 1.10 inch or less and a center Shore C hardness (Hcenter) of 50 or less, one or more optional intermediate core layers, and an outer core layer formed from at least one of a thermoset rubber composition TR and a thermoplastic composition TP and having a thickness of 0.200 inches or greater and an outer surface Shore C hardness (Houter surface) of 70 or greater, wherein Houter surface>Hcenter, and Houter surface?Hcenter?40. In another embodiment, the center Shore C hardness (Hcenter) is 40 or less, the outer surface Shore C hardness (Houter surface) is 85 or greater, and Houter surface?Hcenter?45. In one embodiment, an intermediate layer is disposed between the outer core layer and the cover. The plasticized non-acid polymer composition PCp/N-A.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: May 9, 2017
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Mark L. Binette, Robert Blink, David A. Bulpett, Brian Comeau, Douglas S. Goguen
  • Patent number: 9643060
    Abstract: A golf ball comprising a core and a cover, wherein the core consists of: a solid inner core layer formed from a plasticized thermoplastic composition TPp and having a diameter of 1.10 inch or less and a center Shore C hardness (Hcenter) of 50 or less, one or more optional intermediate core layers, and an outer core layer formed from at least one of a thermoset rubber composition and a thermoplastic composition TP and having a thickness of 0.200 inches or greater and an outer surface Shore C hardness (Houter surface) of 70 or greater, wherein Houter surface>Hcenter, and Houter surface?Hcenter?40. In another embodiment, the center Shore C hardness (Hcenter) is 40 or less, the outer surface Shore C hardness (Houter surface) is 85 or greater, and Houter surface?Hcenter?45. In one embodiment, an intermediate layer is disposed between the outer core layer and the cover.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: May 9, 2017
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Brian Comeau, Douglas S. Goguen
  • Patent number: 9597553
    Abstract: Golf balls comprising a multi-layer core and a cover are disclosed. The multi-layer core comprises a layer formed from a highly neutralized polymer composition, a layer formed from an additional thermoplastic composition, and an outermost layer formed from a thermoset rubber.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: March 21, 2017
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Derek A. Ladd, Brian Comeau, Douglas S. Goguen
  • Patent number: 9592425
    Abstract: A golf ball comprising a core and a cover, the core consisting of: a solid inner core layer formed from a first unfoamed thermoplastic composition TP1 and having a diameter of 1.10 inch or less and a center Shore C hardness (Hcenter) of 50 or less, one or more optional intermediate core layers, and an outer core layer formed from a second thermoplastic composition TP2 comprising at least one transparent or plasticized polyamide and having a thickness of 0.200 inches or greater and an outer surface Shore D hardness (Houter surface) of 55 or greater, wherein Houter surface+30 >Hcenter, and Houter surface+30 ?Hcenter?40.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: March 14, 2017
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Brian Comeau, Douglas S. Goguen
  • Patent number: 9586094
    Abstract: A method for manufacturing a golf ball showing a great flight distance on driver shots for includes the steps of: preparing a rubber composition containing a base rubber, an ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, a crosslinking initiator and a carboxylic acid and/or a salt thereof; heat pressing the rubber composition at a press temperature ranging from t-40° C. to t-15° C. to mold a spherical core, wherein t ° C. is a one-minute half-life temperature of the crosslinking initiator; and forming at least one cover layer covering the spherical core.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: March 7, 2017
    Assignee: DUNLOP SPORTS CO. LTD.
    Inventors: Ayaka Shindo, Chiemi Mikura, Ryota Sakamine, Sho Goji
  • Patent number: 9573022
    Abstract: Golf balls comprising a multi-layer core and a cover are disclosed. The multi-layer core comprises a layer formed from a highly neutralized polymer composition and a layer formed from a thermoset rubber.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: February 21, 2017
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, David A. Bulpett, Robert P. Blink, Mark L. Binette, Brian Comeau