Plural Diverse Layers Patents (Class 473/376)
  • Patent number: 10569139
    Abstract: A golf ball 2 includes a main body 4 and a paint layer 6 positioned outside the main body 4. The main body 4 includes a spherical core 8, a mid layer 10 positioned outside the core 8, and a cover 12 positioned outside the mid layer 10. An indentation depth, measured when the paint layer 6 in a cross-section along a plane passing through a central point of the golf ball 2 is pressed by a force of 30 mgf in a direction perpendicular to the cross-section, is not less than 300 nm and not greater than 3000 nm. The paint layer 6 preferably has a thickness of not less than 5 ?m and not greater than 50 ?m.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: February 25, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Kazuya Kamino, Hidetaka Inoue, Toshiyuki Tarao
  • Patent number: 10561904
    Abstract: Multi-piece golf balls containing a dual-layered core structure are provided. The core structure includes a small, heavy inner core (center) having a relatively high specific gravity, and a surrounding outer core layer. The layers of the core structure may have different hardness gradients. The center of the core comprises a metal material such as copper, steel, brass, tungsten, titanium, aluminum, and alloys thereof preferably dispersed in a thermoplastic polymeric matrix. Different plasticizers such as fatty acid esters may be used. The outer core layer is preferably formed from a thermoset composition such as polybutadiene. The resulting ball has high resiliency and good spin.
    Type: Grant
    Filed: September 23, 2018
    Date of Patent: February 18, 2020
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Mark L. Binette
  • Patent number: 10549157
    Abstract: Golf ball having CoR of at least 0.810, specific gravity SGB of less than 1.00 g/cc, and initial velocity of at least 250 ft/s and comprising a first layer L1, a second layer L2 surrounding L1, and a third layer L3 surrounding L2. L1 is formed from at least one highly neutralized polymer and has first specific gravity SG1; L2 is formed from at least one partially neutralized polymer and has second specific gravity SG2; and L3 is formed from at least one of a thermoset or thermoplastic composition and has third specific gravity SG3. At least two of SG1, SG2, and SG3 is less than 1.13 g/cc. SG1 may be less than 1.13 g/cc, or less than 1.0 g/cc. The thermoset or thermoplastic composition may comprise polyurethane(s), polyurea(s), polyurethane(s)/polyurea(s) hybrids, and/or ionomers such as at least partially neutralized polymers and/or HNPs.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: February 4, 2020
    Assignee: Acushnet Company
    Inventors: Derek A. Ladd, Michael J. Sullivan, William E. Morgan, Mark L. Binette
  • Patent number: 10543399
    Abstract: A golf ball 2 includes a core 4, an inner cover 6, a main cover 8, and an outer cover 10. 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 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, and 30<I?O.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: January 28, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Hidetaka Inoue, Kazuya Kamino
  • Patent number: 10478675
    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: September 23, 2018
    Date of Patent: November 19, 2019
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, David A. Bulpett, Robert Blink, Mark L. Binette, Brian Comeau
  • Patent number: 10471308
    Abstract: Multi-layered golf balls having a dual-layered core and cover of at least one layer are provided. The dual-core construction includes a non-foamed inner core (center) made of a thermoplastic or thermoset composition such as polybutadiene rubber. An outer core layer comprising a foamed composition, such as polyurethane foam, is disposed about the inner core. In one version, the foamed outer core layer is made of a relatively soft foam composition having low flex modulus and density. The foamed outer core layer may specific gravity gradient within the layer, wherein the outer surface specific gravity is greater than the midpoint specific gravity. A cover may be disposed about the core structure. For example, an inner cover made of ethylene acid copolymer ionomer and outer cover made of polyurethane may be used.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: November 12, 2019
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Mark L. Binette, Brian Comeau, Michael Michalewich, Douglas S. Goguen, Shawn Ricci
  • Patent number: 10427005
    Abstract: Golf ball constructions incorporating at least one layer comprising a polycyclopentene rubber having advantageously modified end groups.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: October 1, 2019
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Brian Comeau, Douglas S. Goguen
  • Patent number: 10427009
    Abstract: An object of the present invention is to provide a golf ball showing a small ratio of a spin rate on driver shots to a spin rate on approach shots. The present invention provides a multi-piece golf ball comprising a spherical center, three or more envelope layers covering the spherical center, and a cover covering the envelope layers, wherein adjacent two envelope layers are formed so as to include a region composed of elements having a hitting deformation ratio of 30% or more, the hitting deformation ratio being obtained by analyzing a specified golf ball model by a finite element method; and the envelope layer which is radially outwardly positioned of the adjacent two envelope layers has a lowest hardness among all the envelope layers.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: October 1, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Takahiro Shigemitsu, Hidetaka Inoue, Seiji Hayase
  • Patent number: 10413782
    Abstract: Multi-layered, golf balls having a core made of a foamed composition are provided. The core preferably has a foam inner core (center) and surrounding thermoset or thermoplastic outer core layer. Preferably, a polyurethane foam composition comprising secondary blowing agents that are activated by heat is used to form the foam center. Non-foamed thermoset materials such as polybutadiene rubber may be used to form the outer core layer. The core layers have different hardness gradients and specific gravity values. The foam cores have good resiliency, thermal stability, and durability over a wide temperature range. The ball further includes a cover that may be multi-layered.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: September 17, 2019
    Assignee: Acushnet Company
    Inventors: Mark L. Binette, Michael J. Sullivan, Derek A. Ladd, Brian Comeau, Michael Michalewich, Shawn Ricci, Douglas S. Goguen
  • Patent number: 10369420
    Abstract: Multi-piece golf balls having a multi-layered solid core and multi-layered cover are provided.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: August 6, 2019
    Assignee: Acushnet Company
    Inventor: Michael J. Sullivan
  • Patent number: 10363460
    Abstract: In a multi-piece solid golf ball which includes a core of at least one layer, a cover of at least one layer, and at least one intermediate layer interposed between the core and the cover, the cover is composed primarily of polyurethane and the following parameters are controlled within specific ranges: core deflection, melt flow rate of intermediate layer material, thickness of intermediate layer, thickness and Shore D hardness of cover, combined thickness of intermediate layer and cover, and the value of (Shore D hardness of cover material)?(Shore D hardness of intermediate layer material). This golf ball has a good, soft feel at impact and lowers the rate of spin on full shots, achieving a good distance.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: July 30, 2019
    Assignee: Bridgestone Sports Co., Ltd.
    Inventors: Hideo Watanabe, Tsuyoshi Nakajima
  • Patent number: 10363459
    Abstract: An object of the present invention is to provide a golf ball having excellent shot feeling and resilience as well as improved durability and abrasion resistance. The present invention provides a golf ball comprising a spherical core and one or more cover layers disposed outside the spherical core, wherein at least one layer of the cover layers contains: (A) a base resin containing (a-1) an ionomer resin and having a material hardness of 58 or less in Shore D hardness; and (B) a polyrotaxane having a cyclodextrin with at least a part of hydroxyl groups thereof being modified with a caprolactone chain via —O—C3H6—O— group, a linear molecule piercing through a cyclic structure of the cyclodextrin, and blocking groups located at both terminals of the linear molecule to prevent disassociation of the cyclodextrin.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: July 30, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Mami Tanaka, Toshiyuki Tarao
  • Patent number: 10343025
    Abstract: A golf ball comprising a core comprising an inner core center and an outer core layer disposed over the inner core center. The inner core center has a deflection of greater than 0.210 inch under a load of 100 kilograms, and the entire the core has a deflection ranging from 0.130 inch to 0.105 inch under a load of 100 kilograms. A mantle layer is disposed over the core and a cover is disposed over the mantle.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: July 9, 2019
    Assignee: Callaway Golf Company
    Inventors: Steven S. Ogg, David M. Bartels
  • Patent number: 10322318
    Abstract: Multi-piece golf balls containing a multi-layered core structure having layers with different hardness gradients and specific gravities are provided. The core structure includes a small, heavy inner core (center) having a relatively high specific gravity with metal material preferably dispersed in a first thermoset composition. The intermediate core layer is preferably formed from a thermoplastic composition such as an ethylene acid copolymer ionomer resin; and the outer core layer is preferably formed from a second thermoset composition. The resulting ball has high resiliency and good spin control.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: June 18, 2019
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Mark L. Binette
  • Patent number: 10300343
    Abstract: The present invention is directed to golf balls consisting of a multi-layer core and a cover. The multi-layer core includes at least one layer formed from a relatively soft or low modulus HNP composition and at least one layer formed from a relatively hard or high modulus HNP composition.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: May 28, 2019
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, David A. Bulpett, Robert Blink, Mark L. Binette, Brian Comeau
  • Patent number: 10258833
    Abstract: Multi-piece golf balls having a multi-layered solid core and multi-layered cover are provided.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: April 16, 2019
    Assignee: Acushnet Company
    Inventor: Michael J. Sullivan
  • Patent number: 10252117
    Abstract: A golf ball with a core comprising polybutadiene and graphene with an embedded IC is disclosed herein. The golf ball preferably has a single core comprising polybutadiene and graphene. Alternatively, the golf ball has a dual core with an inner core comprising polybutadiene and graphene. Alternatively, the golf ball has a dual core with an outer core comprising polybutadiene and graphene.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: April 9, 2019
    Assignee: Callaway Golf Company
    Inventors: Vincent Simonds, David Bartels, Vijay Chavan
  • Patent number: 10213656
    Abstract: Multi-piece golf balls containing a multi-layered core structure are provided. The core structure includes a small, heavy inner core (center) having a relatively high specific gravity, an intermediate core layer, and a surrounding outer core layer. The layers of the core structure may have different hardness gradients. In one preferred embodiment, each core layer has a positive hardness gradient. The center of the core comprises a metal material such as copper, steel, brass, tungsten, titanium, aluminum, and alloys thereof. The intermediate core layer is preferably formed from a thermoset composition such as polybutadiene rubber, and the outer core layer is preferably formed from a thermoplastic composition such as an ethylene acid copolymer. The resulting ball has high resiliency and good spin control.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: February 26, 2019
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Mark L. Binette
  • Patent number: 10188912
    Abstract: The present invention is directed to golf balls having a diameter of greater than 1.68 inches and including at least one layer formed from an HNP composition.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: January 29, 2019
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Mark L. Binette, Steven Aoyama
  • Patent number: 10150011
    Abstract: Golf ball having at least three layers comprising ionomeric and/or HNP compositions, wherein for each two adjacent layers, a relationship is established between a ratio of the volumes of the two adjacent layers and a ratio of the percent neutralizations of those two layers such that the volumes and % neutralizations of all layers are interrelated and interdependent to produce unique and desirable playing characteristics. In one embodiment, a golf ball of the invention has T layers, wherein T?3 and each of T layers has a different volume “V” and comprises an ionomeric and/or HNP composition having a different % neutralization “N”. Furthermore, each of n inner layers of the T layers (n<T) has an adjacent surrounding layer n+1 such that a volume Vn and a % neutralization Nn of each inner layer and a volume V(n+1) and % neutralization N(n+1) of each adjacent surrounding layer n+1 satisfy the relationship (Vn?V(n+1))/Vn?(Nn?N(n+1))/N(n+1).
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: December 11, 2018
    Assignee: Acushnet Company
    Inventors: Derek A. Ladd, Edmund A. Hebert, Douglas E. Jones, Donald A. Serino
  • Patent number: 10150012
    Abstract: Golf ball having at least three layers comprising ionomeric and/or HNP compositions, wherein for each two adjacent layers, a relationship is established between a ratio of the volumes of the two adjacent layers and a ratio of the percent neutralizations of those two layers such that the volumes and % neutralizations of all layers are interrelated and interdependent to produce unique and desirable playing characteristics. In one embodiment, a golf ball of the invention has T layers, wherein T?3 and each of T layers has a different volume “V” and comprises an ionomeric and/or HNP composition having a different % neutralization “N”; and wherein each of n inner layers of the T layers (n<T) has an adjacent surrounding layer n+1 such that a volume Vn and a % neutralization Nn of each inner layer and a volume V(n+1) and % neutralization N(n+1) of each adjacent surrounding layer n+1 satisfy the relationship (V(n+1)?Vn)/V(n+1)?(Nn?N(n+1))/N(n+1).
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: December 11, 2018
    Assignee: Acushnet Company
    Inventors: Derek A. Ladd, Edmund A. Herbert, Douglas E. Jones, Donald A. Serino
  • Patent number: 10150010
    Abstract: Multi-piece golf balls containing a dual-layered core structure are provided. The core structure includes a small, heavy inner core (center) having a relatively high specific gravity, and a surrounding outer core layer. The layers of the core structure may have different hardness gradients. The center of the core comprises a metal material such as copper, steel, brass, tungsten, titanium, aluminum, and alloys thereof preferably dispersed in a plasticized thermoplastic polymeric matrix. Different plasticizer such as fatty acid esters may be used. The outer core layer also is preferably formed from a thermoplastic composition such as an ethylene acid copolymer ionomer resin. The resulting ball has high resiliency and good spin.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: December 11, 2018
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Mark L. Binette
  • Patent number: 10143895
    Abstract: Multi-piece golf balls having a multi-layered solid core and multi-layered cover are provided. In one version, a six-piece ball having a three-layered core and three-layered cover is formed. Preferably, the inner core is made of a thermoset rubber composition, the intermediate core layer is made of a thermoplastic composition, and the outer core layer is made of a highly neutralized polymer (HNP) composition. The cover includes inner, intermediate, and outer cover layers, wherein the outer cover is made of a composition comprising a polyurethane, polyurea, or copolymer or blend thereof. In a second version, a five-piece ball having a two-layered core and three-layered cover is produced. The finished balls have high resiliency and rebounding properties.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: December 4, 2018
    Assignee: Acushnet Company
    Inventor: Michael J. Sullivan
  • Patent number: 10130847
    Abstract: Multi-layered golf balls having at least one layer made from silicone (polysiloxane) elastomers; silicone (polysiloxane) elastomer/polyurethane blends; polycarbonate-polysiloxane blends and copolymers; and polycarbonate-polysiloxane/polyurethane blends are provided. For example, three-piece, four-piece, and five-piece golf balls containing different core and cover structures can be made. The polysiloxane compositions have good thermal stability and durability without sacrificing resiliency. The polysiloxane compositions also have high elongation, tensile strength, chemical/fluid-resistance, and weatherability properties. These compositions can be used to form any layer, for example, core, intermediate, or cover, in the golf ball.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: November 20, 2018
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Brian Comeau, Mark L. Binette, Michael Michalewich, Shawn Ricci
  • Patent number: 10124217
    Abstract: Multi-piece golf balls having a multi-layered solid core and multi-layered cover are provided.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: November 13, 2018
    Assignee: Acushnet Company
    Inventor: Michael J. Sullivan
  • Patent number: 10112080
    Abstract: Multi-layered 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 core layers have different hardness and specific gravity levels. The specific gravity (density) of the foam inner core is preferably less than the density of the outer core layer. The core assembly preferably has a positive hardness gradient extending across the entire assembly. The core structure and resulting ball have relatively good resiliency.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: October 30, 2018
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Mark L. Binette, Brian Comeau, Douglas S. Goguen, Michael Michalewich, Shawn Ricci
  • Patent number: 10080926
    Abstract: Multi-piece golf balls containing a dual-layered core structure are provided. The core structure includes a small, heavy inner core (center) having a relatively high specific gravity, and a surrounding outer core layer. The layers of the core structure may have different hardness gradients. The center of the core comprises a metal material such as copper, steel, brass, tungsten, titanium, aluminum, and alloys thereof preferably dispersed in a thermoplastic polymeric matrix. Different plasticizer such as fatty acid esters may be used. The outer core layer is preferably formed from a thermoset composition such as polybutadiene. The resulting ball has high resiliency and good spin.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: September 25, 2018
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Mark L. Binette
  • Patent number: 10080925
    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: February 17, 2017
    Date of Patent: September 25, 2018
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, David A. Bulpett, Robert P. Blink, Mark L. Binette, Brian Comeau
  • Patent number: 10080928
    Abstract: Multi-layered 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 composition selected from thermoset compositions and thermoplastic compositions. The core layers have different hardness and specific gravity levels. The specific gravity (density) of the foam inner core is preferably less than the density of the outer core layer.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: September 25, 2018
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, David A. Bulpett, Robert Blink, Mark L. Binette, Brian Comeau
  • Patent number: 10058741
    Abstract: A golf ball with a center core comprising polybutadiene and a carbon nanotube material in an amount ranging from 0.4 to 2.5 weight percent of the center core is disclosed herein. Alternatively, the golf ball has a mantle layer with a blend of ionomer materials and a carbon nanotube material in an amount ranging from 0.2 to 2.5 weight percent of the mantle layer.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: August 28, 2018
    Assignee: Callaway Golf Company
    Inventors: Vijay Chavan, David Bartels, Armando Becerra
  • Patent number: 10035046
    Abstract: The present invention is directed to an improved multi-layered core golf ball wherein each core layer comprises its own specific hardness gradient (positive, negative or a combination) in addition to an overall specific hardness gradient from one core layer to the next.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: July 31, 2018
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Brian Comeau, Douglas S. Goguen, David A. Bulpett
  • Patent number: 10029153
    Abstract: A golf ball comprising a core comprising an inner core center and an outer core layer disposed over the inner core center. The inner core center has a deflection of greater than 0.210 inch under a load of 100 kilograms, and the entire the core has a deflection ranging from 0.130 inch to 0.105 inch under a load of 100 kilograms. A mantle layer is disposed over the core and a cover is disposed over the mantle.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: July 24, 2018
    Assignee: Callaway Golf Company
    Inventors: Steven S. Ogg, David M. Bartels
  • Patent number: 10016658
    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: September 7, 2017
    Date of Patent: July 10, 2018
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Edmund A. Hebert, Mark L. Binette, Brian Comeau
  • Patent number: 10010765
    Abstract: Multi-layered golf balls having a dual-layered core and cover of at least one layer are provided. The dual-core construction includes a non-foamed inner core (center) made of a thermoplastic or thermoset composition such as polybutadiene rubber. An outer core layer comprising a foamed composition, such as polyurethane foam, is disposed about the inner core. In one version, the foamed outer core layer is made of a relatively soft foam composition having low flex modulus and density. The foamed outer core layer may specific gravity gradient within the layer, wherein the outer surface specific gravity is greater than the midpoint specific gravity. A cover may be disposed about the core structure. For example, an inner cover made of ethylene acid copolymer ionomer and outer cover made of polyurethane may be used.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: July 3, 2018
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Mark L. Binette, Brian Comeau, Michael Michalewich, Douglas S. Goguen, Shawn Ricci
  • Patent number: 9999809
    Abstract: A golf ball includes a thermoplastic HNP inner core layer having a center hardness less than the surface hardness to define a positive hardness gradient. An outer core layer is formed from a thermoset rubber composition. The core layer has an inner surface hardness less than the outer surface hardness to define a positive hardness gradient of 3 to 30 Shore D. Inner and outer cover layers are disposed about the outer core layer. The HNP composition includes an acid copolymer of ethylene and an ?,?-unsaturated carboxylic acid; a non-acid polymer comprising polyolefins, polyamides, polyesters, polyethers, polyurethanes, metallocene-catalyzed polymers, single-site catalyst polymerized polymers, ethylene propylene rubber, ethylene propylene diene rubber, styrenic block copolymer rubbers, alkyl acrylate rubbers, or functionalized derivatives thereof; an organic acid or salt thereof; and a cation source in an amount sufficient to neutralize at least about 80% of the acid groups.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: June 19, 2018
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Mark L. Binette, Brian Comeau
  • Patent number: 9943729
    Abstract: The present invention is directed to golf balls consisting of a multi-layer core and a cover. The multi-layer core includes at least one layer formed from a relatively soft or low modulus HNP composition and at least one layer formed from a relatively hard or high modulus HNP composition.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: April 17, 2018
    Inventors: Michael J. Sullivan, David A. Bulpett, Robert Blink, Mark L. Binette, Brian Comeau
  • Patent number: 9939291
    Abstract: Golf balls comprising a multi-layer core and a cover are disclosed. The multi-layer core comprises at least three layers, including at least one thermoset layer and at least one thermoplastic layer. The innermost core layer is relatively small, having a diameter of from 0.50 inches to 1.30 inches, and has a plurality of projections disposed thereon.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: April 10, 2018
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Derek A. Ladd
  • Patent number: 9925424
    Abstract: Disclosed herein are multilayer golf balls having a layer with a higher Shore C hardness and a lower Shore D hardness than another layer.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: March 27, 2018
    Assignee: Acushnet Company
    Inventors: Derek A. Ladd, David A. Bulpett, Scott Cooper, Michael J. Sullivan
  • Patent number: 9925422
    Abstract: A golf ball has an inner core layer including a thermoplastic highly-neutralized ionomer and having a geometric center hardness less than a surface hardness to define a first positive hardness gradient. An outer core layer is formed about the inner core and includes a homogenous thermoset composition. The outer core has an interior hardness less than an outer surface hardness to define a second positive hardness gradient. An inner and outer cover layers are disposed about outer core layer. The first and second hardness gradients each have a slope and the slope of the second hardness gradient is less than the slope of the first hardness gradient such that a ratio of the first and second slopes is 0.8 to 0.85.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: March 27, 2018
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Brian Comeau
  • Patent number: 9914021
    Abstract: An object of the present invention is to provide a golf ball traveling a great distance on driver shots.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: March 13, 2018
    Assignee: DUNLOP SPORTS CO. LTD.
    Inventors: Kohei Mimura, Takahiro Sajima, Kosuke Tachibana
  • Patent number: 9901783
    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: April 5, 2016
    Date of Patent: February 27, 2018
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Derek A. Ladd, Mark L. Binette, Brian Comeau, Michael Michalewich, Shawn Ricci
  • Patent number: 9901785
    Abstract: Multi-piece golf balls having a multi-layered solid core and multi-layered cover are provided.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: February 27, 2018
    Assignee: Acushnet Company
    Inventor: Michael J. Sullivan
  • Patent number: 9861860
    Abstract: Multi-layered 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 composition selected from thermoset compositions and thermoplastic compositions. The core layers have different hardness and specific gravity levels. The specific gravity (density) of the foam inner core is preferably less than the density of the outer core layer.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: January 9, 2018
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, David A. Bulpett, Robert Blink, Mark L. Binette, Brian Comeau
  • Patent number: 9814940
    Abstract: A golf ball includes a relatively large polymer core and has a soft ball compression. The polymer is, in the illustrated embodiments, a highly neutralized acid polymer. The golf ball may, optionally, include an outer core made of a different material, such as a thermoset polybutadiene rubber. The golf ball may, optionally, include a mantle layer made of an ionomer material. The inner core having a diameter of between 24 mm and 40 mm, and in some designs, between 28 mm and 32 mm, yields increased iron initial velocity and lower iron spin while maintaining driver performance.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: November 14, 2017
    Assignee: Feng Tay Enterprises Co., Ltd.
    Inventors: Yasushi Ichikawa, Arthur Parker Molinari
  • Patent number: 9795837
    Abstract: Multi-piece golf balls having a multi-layered solid core and multi-layered cover are provided.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: October 24, 2017
    Assignee: Acushnet Company
    Inventor: Michael J. Sullivan
  • Patent number: 9795834
    Abstract: The present invention is directed to multi-layer golf balls including a layer formed from a composition comprising a relatively soft or low modulus HNP, a layer formed from a composition comprising a relatively hard or high modulus HNP, an inner cover layer formed from a thermoplastic composition, and an outer cover layer.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: October 24, 2017
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Derek A. Ladd, Edmund A. Hebert, Douglas E. Jones
  • Patent number: 9770630
    Abstract: Multi-layered golf ball core sub-assemblies and the resulting golf balls are provided. The core structure includes an inner core (center) comprising a foam composition, preferably foamed polyurethane. The intermediate and outer core layers are preferably formed from foamed and non-foamed thermoset compositions. For example, the intermediate core can be formed from a thermoset rubber so there are adjoining foam core layers (inner and intermediate) and the outer core layer can be formed from a non-foamed thermoset rubber. The core layers have different hardness and specific gravity levels. The core assembly preferably has a positive hardness gradient extending across the entire assembly. The core structure and resulting ball have relatively good resiliency.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: September 26, 2017
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Mark L. Binette, Brian Comeau, Douglas S. Goguen, Michael Michalewich, Shawn Ricci
  • Patent number: 9750984
    Abstract: Golf balls having a multi-layered solid core and multi-layered cover are provided. The center of the core is made of a thermoset rubber material and preferably has a positive hardness gradient. The intermediate core layer is made of a thermoset or thermoplastic composition. The outer core layer is made of a highly neutralized polymer composition. The inner cover is made of a thermoplastic composition, preferably an ethylene acid copolymer. The thermoplastic ethylene acid copolymer ionomer can have acid groups that are partially or highly neutralized. The outer cover is made of a composition comprising a polyurethane, polyurea, or copolymer or blend thereof. The finished ball has high resiliency and rebounding properties.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: September 5, 2017
    Assignee: Acushnet Company
    Inventor: Michael J. Sullivan
  • Patent number: 9750985
    Abstract: Multi-piece golf balls having a multi-layered solid core and multi-layered cover are provided. In one version, a six-piece ball having a three-layered core and three-layered cover is formed. Preferably, the inner core is made of a thermoset rubber composition, the intermediate core layer is made of a thermoplastic composition, and the outer core layer is made of a highly neutralized polymer (HNP) composition. The cover includes inner, intermediate, and outer cover layers, wherein the outer cover is made of a composition comprising a polyurethane, polyurea, or copolymer or blend thereof. In a second version, a five-piece ball having a two-layered core and three-layered cover is produced. The finished balls have high resiliency and rebounding properties.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: September 5, 2017
    Assignee: Acushnet Company
    Inventor: Michael J. Sullivan
  • Patent number: 9750983
    Abstract: Multi-piece golf balls containing a multi-layered core structure are provided. The core structure includes a small, heavy inner core (center) having a relatively high specific gravity, an intermediate core layer, and a surrounding outer core layer. The layers of the core structure may have different hardness gradients. In one preferred embodiment, each core layer has a positive hardness gradient. The center of the core comprises a metal material such as copper, steel, brass, tungsten, titanium, aluminum, and alloys thereof. The intermediate core layer is preferably formed from a thermoset composition such as polybutadiene rubber, and the outer core layer is preferably formed from a thermoplastic composition such as an ethylene acid copolymer. The resulting ball has high resiliency and good spin control.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: September 5, 2017
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Mark L. Binette