Racquet construction and method of making same
    61.
    发明授权
    Racquet construction and method of making same 失效
    RACQUET构造及其制造方法

    公开(公告)号:US3814423A

    公开(公告)日:1974-06-04

    申请号:US26212672

    申请日:1972-06-12

    发明人: SHOCKLEY G HAFER R

    摘要: A racquet construction comprising a frame having an ovaloid head portion terminating in a pair of closely spaced parallel extensions which are adapted to receive a handle at the terminal ends thereof with the head portion of the frame being defined by a pair of spaced metal portions. A beam made of a resilient elastomeric material is formed between the metal portions and holds such portions in substantially parallel relation and provides the sole support for adjoining stringing extending thereacross.

    摘要翻译: 一种球拍结构,其包括具有终止于一对紧密间隔的平行延伸部的椭圆形头部的框架,所述平行延伸部适于在其末端处容纳手柄,所述框架的头部由一对间隔开的金属部分限定。 由金属部分之间形成由弹性弹性材料制成的梁,并且将这些部分基本上平行地保持,并且提供用于邻接跨越延伸的连接的底部支撑。

    Method of manufacturing a tennis racket
    62.
    发明授权
    Method of manufacturing a tennis racket 失效
    制造TENNIS RACKET的方法

    公开(公告)号:US3805366A

    公开(公告)日:1974-04-23

    申请号:US26134572

    申请日:1972-06-09

    申请人: MAARK CORP

    发明人: VAUGHN G HARGRAVE R

    摘要: A novel tennis racket structure, tennis racket frame strip and method of manufacturing a tennis racket are set forth. The combination of novel frame strip, throat piece structure, grommet means and handle structure provide an improved racket having improved strength characteristics, reliability and durability. A novel frame strip structure provides an improved racket strength factor.

    摘要翻译: 阐述了一种新颖的网球拍结构,网球拍框架条和制造网球拍的方法。 新颖的框架条,喉部结构,索环装置和手柄结构的组合提供了改进的强度特性,可靠性和耐久性的球拍。 新颖的框架条结构提供了改进的球拍强度因子。

    Racketball or tennis racket having a tubular metal frame
    64.
    发明授权
    Racketball or tennis racket having a tubular metal frame 失效
    RACKETBALL或TENNIS RACKET具有管状金属框架

    公开(公告)号:US3664668A

    公开(公告)日:1972-05-23

    申请号:US3664668D

    申请日:1970-04-03

    申请人: FRANKLIN W HELD

    发明人: HELD FRANKLIN W

    CPC分类号: A63B49/12 A63B49/03 A63B49/14

    摘要: RACQUETBALL AND TENNIS RACQUETS HAVING FRAMES FORMED OF A LENGTH OF METAL, PREFERABLY ALUMINUM, TUBING OR EXTRUSION, THE END PORTIONS OF WHICH EXTEND PARALLEL TO ONE ANOTHER AND ARE WELDED TOGETHER TO FORM THE HANDLE AND SHAFT PORTIONS OF THE RACQUET AND THE INTERMEDIATE PORTION OF WHICH FORMS THE FRAME OF THE RACQUET. THE FRAME IS COMPLETED BY A THROAT PIECE WHICH SPANS THE DIVERGING PORTIONS OF THE TUBING IMMEDIATELY ABOVE THE SHAFT. A SLOT IS PROVIDED IN THE TUBING ALONG THE UPPER HALF OF THE RACQUET TO ALTER THE RESPONSE FREQUENCY OF THE FRAME SO THAT IT COINCIDES WITH THAT OF THE BALL. HOLES ARE PROVIDED IN THE TUBING OF THE RACQUET AND IN THE THROAT PIECE TO RECEIVE THE RACQUET STRINGS. HOLLOW RIVETS OR BUSHINGS MAY BE PROVIDED IN THESE HOLES TO PREVENT CUTTING OF THE STRINGS BY THE EDGES OF THE HOLES. A LENGTH OF RUBBER OR PLASTIC MAY BE POSITIONED IN THE SLOT OF THE FRAME TO ADD WEIGHT TO THE RACQUET AND FOR PROTECTIVE PURPOSES.

    Racket for lawn-tennis and similar games
    67.
    发明授权
    Racket for lawn-tennis and similar games 失效
    用于草坪网球和类似游戏的球拍

    公开(公告)号:US3086777A

    公开(公告)日:1963-04-23

    申请号:US9695061

    申请日:1961-03-20

    申请人: RENE LACOSTE JEAN

    发明人: RENE LACOSTE JEAN

    摘要: 955,733. Rackets. J. R. LACOSTE. March 29, 1961 [March 30, 1960], No. 11598/61. Heading A6D. In a tubular metal frame for a tennis or like racket of dumb-bell cross-section, the strings are attached to loops extending round the frame. As shown, the loops may be formed by winding a piano wire 17 spirally round the frame, the turns of the wire being located by a notched spacer strip 18. The strings are looped round the turns of wire 17 in the inner groove corresponding to the groove 8. The strip 18 may form part of the completed racket or may be removed. In a modification (Figs. 9 and 10, not shown), the strings are attached to an intermediate sinuous wire member which is bound to the inner periphery of the frame 5 by wire 17. Instead of being in spiral form, the wire may be applied to the frame in half hitches (Fig. 11, not shown). In other forms (Figs. 12-14, not shown), the wire is replaced by metallic rings which may be located by tubular or notched spacers. Metallic rings formed with inward projections (Fig. 15, not shown), are spaced by means of blobs of plastic on solder in groove 8. The frame may be made of hard chromium plated steel tube. Specification 955,732 is referred to.