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    Tennis racket frame made of metal oxide fibers and ceramic particles
    1.
    发明授权
    Tennis racket frame made of metal oxide fibers and ceramic particles 失效
    网球拍框架由金属氧化物纤维和陶瓷颗粒制成

    公开(公告)号：US4614341A

    公开(公告)日：1986-09-30

    申请号：US632453

    申请日：1984-07-19

    申请人： David Fernandez

    发明人： David Fernandez

    IPC分类号： A63B49/00 ,  A63B49/02 ,  A63B49/10

    CPC分类号： A63B49/10 ,  A63B49/022 ,  A63B49/03 ,  A63B2049/103 ,  A63B2209/023 ,  Y10S273/03 ,  Y10S273/06 ,  Y10S273/07 ,  Y10S273/23

    摘要： Improved tennis racket in which an inverted chevron shaped yoke is provided having downward sloping side portions which match the curvature of the arcuate top portion of the racket head to provide vertical strings extending between the yoke and arcuate top portion which are of the same length. The equal length of vertical strings provide uniform elastic response to ball impact. The particular design of the chevron provides added structural strength to the neck of the racket. An improved racket made from a polycrystalline metal oxide fiber and resin matrix is also disclosed. In addition, an improved string protection system involving elastomer inserts which are molded into the head portion of composite material rackets is described.

    摘要翻译： 提供了一种改进的网球拍，其中设置倒置的V形形状的轭，其具有与球拍头部的弧形顶部部分的曲率相匹配的向下倾斜的侧部，以提供在相同长度的轭架和弓形顶部之间延伸的垂直绳。 垂直弦线的相等长度为球的冲击提供均匀的弹性响应。 人字纹的特殊设计为球拍的颈部提供了增加的结构强度。 还公开了由多晶金属氧化物纤维和树脂基体制成的改进的球拍。 另外，描述了一种改进的串联保护系统，其包括弹性体插入件，其被模制到复合材料球拍的头部中。

    Golf club head
    2.
    发明授权
    Golf club head 失效
    高尔夫球杆头

    公开(公告)号：US4591160A

    公开(公告)日：1986-05-27

    申请号：US590397

    申请日：1984-03-16

    申请人： Alessandro Piragino

    发明人： Alessandro Piragino

    IPC分类号： A63B53/04

    CPC分类号： A63B53/04 ,  A63B53/047 ,  A63B60/52 ,  A63B2053/0433 ,  A63B2209/00 ,  Y10S273/01 ,  Y10S273/06 ,  Y10S273/08

    摘要： The golf club head comprises a shaped core body of material selected from synthetic and natural rubber and an outer shell closely surrounding substantially the entire surface of the core body of polymeric thermoplastic material selected from the group of polycarbonate, polyamide and polybutylene-terephthalate. According to a preferred embodiment, the golf club head further comprises a center core body embedded within the core body and consisting of closed envelope completely filled with liquid.

    摘要翻译： 高尔夫球杆头包括选自合成橡胶和天然橡胶的成形芯体，以及紧密围绕选自聚碳酸酯，聚酰胺和聚对苯二甲酸丁二醇酯的聚合物热塑性材料芯体的整个表面的外壳。 根据优选实施例，高尔夫球杆头还包括嵌入在芯体内并由完全充满液体的封闭的外壳组成的中心芯体。

    Game racquet frame
    3.
    发明授权
    Game racquet frame 失效
    游戏球拍框架

    公开(公告)号：US4429874A

    公开(公告)日：1984-02-07

    申请号：US298261

    申请日：1981-08-31

    申请人： Robert E. Rodgers, Jr.

    发明人： Robert E. Rodgers, Jr.

    IPC分类号： A63B49/10 ,  A63B49/14 ,  A63B49/12

    CPC分类号： A63B49/10 ,  A63B49/14 ,  Y10S273/06 ,  Y10S273/07

    摘要： A composite racquetball racquet comprises a molded synthetic plastic frame member on which is adhesively bonded a generally U-shaped channel and a synthetic plastic bumper strip is adhesively bonded over the channel outer periphery at the outer head portion of the frame. Mechanical interlock formations are provided between the plastic frame member and the metal channel side walls.

    摘要翻译： 复合壁球拍包括：模制合成塑料框架构件，其上粘合有大致U形的通道，并且合成塑料保险杠条粘结在框架外部头部的通道外周上。 在塑料框架构件和金属通道侧壁之间设置机械互锁结构。

    Skip rope
    4.
    发明授权
    Skip rope 失效
    跳绳

    公开(公告)号：US4385759A

    公开(公告)日：1983-05-31

    申请号：US270575

    申请日：1981-06-04

    申请人： James M. Everroad

    发明人： James M. Everroad

    IPC分类号： A63B5/20

    CPC分类号： A63B5/20 ,  A63B2208/12 ,  Y10S273/05 ,  Y10S273/06 ,  Y10S273/12

    摘要： A skip rope for exercise and fitness conditioning includes a length of polypropylene rope threaded through two handle members disposed at opposite ends of the length of rope. After the rope is threaded through each handle member, the free ends of the rope are knotted to prevent it from pulling back through the two handles. Each handle is constructed of a tubular section of polyvinylchloride which has nylon end plugs press fit into the open ends of the tube. The outside diameter surface of each end plug coincides with the outside diameter surface of the polyvinylchloride tubing and each end plug includes a rope-receiving clearance aperture just slightly larger than the outside diameter of the rope. The material combination of nylon for the end plug and polypropylene for the rope provides a type of self-lubricating interface which enables the rope to turn and twist completely independent of the handle. Further, this self-lubricating characteristic enables the rope to slide relative to the end plugs without wear or abrasion to any significant degree.

    摘要翻译： 用于运动和健身调理的跳绳包括穿过设置在绳索长度的相对端处的两个手柄部件的一长度的聚丙烯绳索。 在绳索穿过每个手柄部件之后，绳索的自由端打结以防止绳索通过两个把手拉回。 每个手柄由聚氯乙烯的管状部分构成，其具有压配合到管的开口端的尼龙端塞。 每个端塞的外径表面与聚氯乙烯管的外径表面重合，并且每个端塞包括稍大于绳的外径的绳索接收间隙孔。 用于端塞的尼龙和用于绳索的聚丙烯的材料组合提供了一种自润滑界面，其使得绳索能够完全独立于手柄转动和扭转。 此外，这种自润滑特性使得绳索相对于端塞没有磨损或任何显着的程度滑动。

    Hockey stick
    6.
    发明授权
    Hockey stick 失效
    曲棍球棒

    公开(公告)号：US4013288A

    公开(公告)日：1977-03-22

    申请号：US595693

    申请日：1975-07-14

    申请人： Ludovicus Jacobus Goverde

    发明人： Ludovicus Jacobus Goverde

    IPC分类号： A63B59/14 ,  B29C45/14

    CPC分类号： B29C45/14631 ,  A63B59/70 ,  A63B2102/24 ,  A63B60/06 ,  A63B60/08 ,  A63B60/10 ,  A63B60/50 ,  Y10S264/83 ,  Y10S273/06

    摘要： A hockey stick is made as a unitary, injection molded product from foamed nylon mixed with glass fibre. The use of foamed nylon results in a relatively lense shell on surface and a core having reduced density. There are no cavities in the stick such as in known hockey sticks or the like made of plastic material. The stick maintains its shape after molding due to a relatively low stress caused by molding pressure which is low in comparison with that required in the production of known plastic hockey sticks. The stick is generally identical to a regular wooden stick from the standpoint of weight and that of weight distribution. An embodiment of the stick with aluminum reinforcement of its blade portion is also disclosed.

    摘要翻译： 曲棍球棒是由与玻璃纤维混合的发泡尼龙制成的整体注塑产品。 使用发泡尼龙导致表面上相对较强的外壳和密度降低的芯。 在棒中没有空腔，例如在由塑料材料制成的已知的曲棍球棒或类似物中。 由于与生产已知的塑料曲棍球棒所需的成型压力相比较低的成型压力引起的相对低的应力，棒材在模制之后保持其形状。 从重量和重量分布的观点来看，棒通常与普通木棍相同。 还公开了其刀片部分具有铝加强件的棒的实施例。

    Bowling ball decelerator
    7.
    发明授权
    Bowling ball decelerator 失效
    BALLLING BALL DECELERATOR

    公开(公告)号：US3899171A

    公开(公告)日：1975-08-12

    申请号：US47979074

    申请日：1974-06-17

    申请人： ALBANY INT CORP

    发明人： HALLER HERBERT C

    IPC分类号： A63D5/02

    CPC分类号： A63D5/026 ,  Y10S273/06 ,  Y10S273/08 ,  Y10S428/909

    摘要： Apparatus for decelerating bowling balls on ball return track systems by snubbing them with the aid of resilient leather belts under tension are widely used. The invention disclosed herein is of an improved apparatus for use in decelerating bowling balls on ball return track systems. The improvement comprises employing as the belt component, a resilient but stiff belt fabricated to offer greater frictional surface than prior art belts and having an inside arc smaller than the arc defined by the balls to be snubbed, thereby to grip the moving balls in a pincer-like grip. The improved apparatus of the invention is more efficient, requires less maintenance, has a longer life and offers economic advantages over prior art devices.

    Shuttlecock and method of making the same
    10.
    发明授权
    Shuttlecock and method of making the same 失效
    开关及其制造方法

    公开(公告)号：US3560128A

    公开(公告)日：1971-02-02

    申请号：US3560128D

    申请日：1968-04-04

    申请人： CARLTON SPORTS CO LTD

    发明人： CARLTON WILLIAM CHARLES

    IPC分类号： A63B67/18

    CPC分类号： A63B67/187 ,  A63B67/193 ,  Y10S273/05 ,  Y10S273/06 ,  Y10T29/49858 ,  Y10T29/49865

    摘要： A SHUTTLECOCK HAVING A FLEXIBLE SKIRT INCLUDING A FLARED ARRAY OF STEMS, A VANE AREA AND A STEM-EXTENSION COLLAR, IS MOULDED FROM NYLON, THE ASSEMBLY FORMING A ONE-PIECE STRUCTURE. THE STEM-EXTENSION COLLAR IS CYLINDRICALLY BUT IS CURLED OR STRAIGHT FLANGE, RIM OR ENLARGEMENT IS FORMED ON ITS OUTER END, EITHER IN THE MOULD OF PREFERABLY, AFTER REMOVAL THEREFROM. A STRIKING CAP MADE OF EXPANDED POLYVINYL CHLORIDE IS SLIPPED OVER THE OUTER END OF THE STEM-EXTENSION COLLAR. THE CAP THEN STARTS TO SHRINK AND AS A RESULT OF THIS SHRINKAGE A GROOVE IS FORMED ON THE INNER WALLS OF THE CAP, THE ANNULAR FLANGE, RIM OR ENLARGEMENT THEN FITTING SNUGLY IN SAID GROOVE AND LOCKING THE CAP AGAINST ANY RECTILLINEAR MOVEMENT OR REMOVAL. BUT THE CAP MAY BE ROTATED ON ITS AXIS, HENCE THROUGH FIRMLY SECURED IS NOT RIDIGLY MOUNTED. THIS SPIN-ABILITY OF THE CAP IS AN ADVANTAGEOUS FEATURE WHEN PLAYING BADMINTON.