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公开(公告)号：US20210245014A1
公开(公告)日：2021-08-12
申请号：US16787448
申请日：2020-02-11
IPC分类号： A63B39/00
摘要： A tennis ball including a non-foamed thermoplastic core defining an internal volume. The core includes a thermoplastic material having a specific gravity of 0.86 to 1.38, a flexural modulus of 2.0 to 50.0 MPa, and a Shore D hardness of 10 to 70. A thickness of the thermoplastic material is between 3.0 and 8.0 mm. The thickness of the thermoplastic material is configured to maintain dimensional stability at internal pressures of between zero and 15 psi.
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公开(公告)号：US10918913B2
公开(公告)日：2021-02-16
申请号：US16114639
申请日：2018-08-28
IPC分类号： A63B39/02 , A63B39/06 , A63B102/02 , A63B39/00
摘要： A tennis ball may include a spherical hollow elastomeric core having a specific gravity of less than 1 and a thickness of at least 4.5 mm and a textile layer covering the spherical hollow core.
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公开(公告)号：US10549159B2
公开(公告)日：2020-02-04
申请号：US15458844
申请日：2017-03-14
IPC分类号： A63B39/06 , A63B102/02 , A63B39/00
摘要： A tennis ball comprises a hollow elastic circumferential core defining a primary outer surface pattern, and a textile outer layer extending over and about the core.
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公开(公告)号：US11426637B2
公开(公告)日：2022-08-30
申请号：US16787465
申请日：2020-02-11
摘要： A tennis ball including a spherical core. The spherical core including an outer surface and a raised wall integrally molded as part of the outer surface.
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公开(公告)号：US20210245013A1
公开(公告)日：2021-08-12
申请号：US16787465
申请日：2020-02-11
摘要： A tennis ball including a spherical core. The spherical core including an outer surface and a raised wall integrally molded as part of the outer surface.
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公开(公告)号：US20200070010A1
公开(公告)日：2020-03-05
申请号：US16114639
申请日：2018-08-28
摘要： A tennis ball may include a spherical hollow elastomeric core having a specific gravity of less than 1 and a thickness of at least 4.5 mm and a textile layer covering the spherical hollow core
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公开(公告)号：US11247103B2
公开(公告)日：2022-02-15
申请号：US16787487
申请日：2020-02-11
摘要： A method for forming a tennis ball including the steps of providing a non-foamed thermoplastic core and providing a non-smooth textured surface on the core. The thermoplastic core including a thermoplastic material having a specific gravity of 0.86 to 1.38, a flexural modulus of 2.0 to 50.0 MPa, and a Shore D hardness of 10 to 70. The thermoplastic material having a thickness between 3.0 and 8.0 mm. The thickness of the thermoplastic material being configured to maintain dimensional stability at internal pressures of between zero and 15 psi.
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公开(公告)号：US11192001B2
公开(公告)日：2021-12-07
申请号：US16787448
申请日：2020-02-11
IPC分类号： A63B39/00 , A63B102/02 , A63B43/00 , B29D22/04
摘要： A tennis ball including a non-foamed thermoplastic core defining an internal volume. The core includes a thermoplastic material having a specific gravity of 0.86 to 1.38, a flexural modulus of 2.0 to 50.0 MPa, and a Shore D hardness of 10 to 70. A thickness of the thermoplastic material is between 3.0 and 8.0 mm. The thickness of the thermoplastic material is configured to maintain dimensional stability at internal pressures of between zero and 15 psi.
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公开(公告)号：US20210128985A1
公开(公告)日：2021-05-06
申请号：US17151394
申请日：2021-01-18
摘要： A tennis ball including a spherical hollow elastomeric core having a specific gravity of less than 1 and a thickness of at least 4.5 mm, and a textile layer covering the spherical elastomeric hollow core. The spherical hollow core has an initial internal pressure of no greater than 5 psi. The tennis ball has a first tennis ball rebound height when measured at a first time when the tennis ball is unused and a second tennis ball rebound height measured after the tennis ball is exposed to atmospheric pressure for four months following the first time and is unused. The second tennis ball rebound height being at least 96% of the first tennis ball rebound height.
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