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1. 发明授权

US5511410A Resiliency testing device for tennis balls 失效
标题翻译：网球弹力测试装置
公开(公告)号：US5511410A
公开(公告)日：1996-04-30
申请号：US321810
申请日：1994-10-12
申请人： Charlie R. Sherts
发明人： Charlie R. Sherts
IPC分类号： G01N3/14 , G01N33/00 , G01N3/48
CPC分类号： G01N3/14 , G01N2033/008 , G01N2203/0035
摘要： A sports ball resiliency testing device is disclosed. The device includes a housing that defines a receiving area into which a ball is placed. The receiving area is configured and dimensioned to act upon the contours of the ball. A movable member extends into the receiving area and makes contact with the surface of the ball. The movable member is urged by a spring so as to exert a compressing force on the ball. The urging force of the spring is adjustable so as to provide for various testing ranges. The ball thus exerts a resisting force against the movable member. A value of the resisting force is determined when an equilibrium is reached between the compressing force and the resisting force. This value indicates the playability of the ball.
摘要翻译：公开了一种运动球弹性试验装置。该装置包括限定放置球的接收区域的壳体。接收区域的构造和尺寸适用于球的轮廓。可移动构件延伸到接收区域中并与球的表面接触。活动部件被弹簧推压，从而对球施加压缩力。弹簧的作用力是可调节的，以便提供各种测试范围。因此，球对该可移动部件施加抵抗力。当在压缩力和抵抗力之间达到平衡时确定抵抗力的值。该值表示球的可玩性。

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