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1. 发明公开

EP3000508A4 METHOD FOR INCREASING INTERNAL PRESSURE OF HOLLOW BALL AND DEVICE THEREFOR 审中-公开
标题翻译： VERFAHREN ZURERHÖHUNGDES INNENDRUCKS EINER HOHLKUGEL UND VORRICHTUNGDAFÜR
公开(公告)号：EP3000508A4
公开(公告)日：2017-01-18
申请号：EP14803727
申请日：2014-05-20
申请人： DUNLOP SPORTS CO LTD
发明人： TAKIHARA HIRONORI , TANAKA HIROAKI
IPC分类号： A63B39/02 , A63B47/00 , A63B102/02
CPC分类号： A63B39/027 , A63B39/025 , A63B2039/022 , A63B2102/02
摘要： [Object] To provide a method for easily increasing the internal pressure of a hollow ball in a practical time. [Solution] A method for increasing the internal pressure of a hollow ball according to the present invention includes the steps of (1) putting a hollow ball 18 including an outer shell and a space surrounded by the outer shell, into a housing portion 4; (2) filling the housing portion 4 with a gas which is more excellent in permeability relative to the outer shell than oxygen gas and nitrogen gas; and (3) causing the gas to pass through the outer shell. When the outer shell contains natural rubber, preferably, in the step (2), the housing portion is filled with a gas having a permeability coefficient of 20 × 10 -17 m 4 /(N€¢s) at 25°C for the natural rubber. Preferably, in the step (2), the housing portion is filled with carbon dioxide gas.
摘要翻译：提供一种在实际的时间内容易地增加空心球的内压的方法。 [解决方案]根据本发明的用于增加中空球的内部压力的方法包括以下步骤：（1）将包括外壳的空心球18和由外壳包围的空间放入壳体部分4中; （2）用比氧气和氮气更高的相对于外壳的渗透性优异的气体填充收容部4; 和（3）使气体通过外壳。当外壳包含天然橡胶时，优选在步骤（2）中，在25℃下，将透气系数为20×10 -17 m 4 /（N·s）的气体填充到壳体部分天然橡胶。优选地，在步骤（2）中，壳体部分填充有二氧化碳气体。

2. 发明公开

EP0652793A1 DRUCKGEFÜLLTER TENNISBALL 失效
标题翻译：内充满压力网球。
公开(公告)号：EP0652793A1
公开(公告)日：1995-05-17
申请号：EP93914698.0
申请日：1993-06-23
申请人： Dunlop GmbH
发明人： GIES, Werner , HEITZENRÖDER, Hans-Friedrich
IPC分类号： A63B39
CPC分类号： A63B39/00 , A63B39/02 , A63B2039/022
摘要： The invention relates to a pressurised tennis ball with a wall consisting essentially of a natural rubber mix. In order to reduce the natural diffusion of the pressurised air inside the ball from the raw ball core, its wall has a thin diffusion blocking layer of a plastic or rubber, the permeability of which to N2 or O2 is lower than that of the natural rubber mixture of the wall.

3. 发明公开

EP3000508A1 METHOD FOR INCREASING INTERNAL PRESSURE OF HOLLOW BALL AND DEVICE THEREFOR 审中-公开
标题翻译：方法来增加一个空心球及其装置的内部压力
公开(公告)号：EP3000508A1
公开(公告)日：2016-03-30
申请号：EP14803727.8
申请日：2014-05-20
申请人： Dunlop Sports Co., Ltd.
发明人： TAKIHARA, Hironori , TANAKA, Hiroaki
IPC分类号： A63B39/02 , A63B47/00
CPC分类号： A63B39/027 , A63B39/025 , A63B2039/022 , A63B2102/02
摘要： [Object] To provide a method for easily increasing the internal pressure of a hollow ball in a practical time.
[Solution] A method for increasing the internal pressure of a hollow ball according to the present invention includes the steps of (1) putting a hollow ball 18 including an outer shell and a space surrounded by the outer shell, into a housing portion 4;
(2) filling the housing portion 4 with a gas which is more excellent in permeability relative to the outer shell than oxygen gas and nitrogen gas; and
(3) causing the gas to pass through the outer shell. When the outer shell contains natural rubber, preferably, in the step (2), the housing portion is filled with a gas having a permeability coefficient of 20 × 10 -17 m 4 /(N•s) at 25°C for the natural rubber. Preferably, in the step (2), the housing portion is filled with carbon dioxide gas.

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