公开(公告)号：US4129634A

公开(公告)日：1978-12-12

申请号：US854533

申请日：1977-11-25

申请人： Andrew M. Cecka ,  Pol Dano ,  Paul G. Pawling

发明人： Andrew M. Cecka ,  Pol Dano ,  Paul G. Pawling

IPC分类号： A63B49/10 ,  B29D27/00

CPC分类号： A63B49/10 ,  B29C70/04 ,  A63B2209/023 ,  B29K2307/00 ,  Y10S264/17 ,  Y10S273/23 ,  Y10T428/2936

摘要： A novel structural member, such as a tennis racket frame, having an unusually high strength to weight ratio is provided comprising an expanded foamed plastic core integrally bonded to a shell comprising at least one layer of resin-coated unidirectionally oriented graphite fibers, the shell completely encasing the core at any transverse cross section of the structural member, with a seamless sleeve made of a thin, flexible cellulosic film between the core and the shell.The structural member is prepared by arranging within a mold cavity an outer shell comprising at least one sheet of resin-coated unidirectionally oriented graphite fibers and a core comprising a foamable resin composition while the core is maintained within a seamless sleeve made of a thin, flexible cellulosic film, sealing the mold cavity and activating the foamable resin composition to cause expansion and generate pressure within the mold cavity and thereby provide intimate bonding of the core to the shell.

摘要翻译： 提供了具有非常高的重量比的网球拍框架的新型结构构件，其包括一体地结合到壳体上的膨胀的发泡塑料芯，包括至少一层树脂涂覆的单向取向的石墨纤维，所述壳完全 在芯部和外壳之间由薄的柔性纤维素膜制成的无缝套管将芯部封装在结构件的任何横截面上。

公开(公告)号：US4061520A

公开(公告)日：1977-12-06

申请号：US720514

申请日：1976-09-03

申请人： Andrew M. Cecka ,  Pol Dano

发明人： Andrew M. Cecka ,  Pol Dano

IPC分类号： A63B49/10 ,  B29C44/12 ,  B29G7/00

CPC分类号： B29C44/12 ,  A63B49/10 ,  B29C70/04 ,  A63B2209/023 ,  B29K2105/06 ,  B29K2307/00

摘要： A novel structural member, such as a tennis racket frame, having an unusually high strength to weight ratio is provided comprising an expanded foamed plastic core integrally bonded to a shell comprising at least one layer of resin coated unidirectionally oriented graphite fibers, the shell completely encasing the core at any transverse cross section of the structural member.The structural member is prepared by arranging within a mold cavity an outer shell comprising at least one sheet of resin coated unidirectionally oriented graphite fibers and a core comprising a foamable resin composition, sealing the mold cavity and activating the foamable resin composition to cause expansion and generate pressure within the mold cavity and thereby provide intimate bonding of the core to the shell.

摘要翻译： 提供了一种具有非常高的重量比的网球拍框架的新型结构构件，其包括与包括至少一层树脂涂覆的单向取向的石墨纤维的外壳整体地结合的膨胀的发泡塑料芯，壳完全包裹 在结构构件的任何横截面处的芯。

公开(公告)号：US4157181A

公开(公告)日：1979-06-05

申请号：US914921

申请日：1978-06-12

申请人： Andrew M. Cecka

发明人： Andrew M. Cecka

IPC分类号： A63B53/10 ,  A63C11/22 ,  B29C70/20 ,  A63B53/12

CPC分类号： A63B53/10 ,  A63C11/22 ,  B29C70/207 ,  A63B2209/02 ,  A63B60/06 ,  A63B60/08 ,  A63B60/10 ,  B29K2995/0079 ,  B29L2023/22 ,  B29L2031/5227 ,  Y10S273/23 ,  Y10S428/902 ,  Y10T428/1369 ,  Y10T428/2918 ,  Y10T428/2936 ,  Y10T428/30

摘要： A novel structural member, such as a golf club shaft or other tapered tubular member, having an unusually high resistance to torsional deflection for given desired longitudinal deflections along with high strength and a center of gravity more favoring the tip-end is provided by a resin-bonded graphite fiber structure in which the fiber orientations in each layer of the multi-layer, composite structure are varied along the length of the shaft and in desired orientation relationships between layers to achieve the unique combination of properties.This structural member is prepared by helically placing fiber yarns such as graphite onto a resin-coated, tapered steel mandrel by winding a series of high modulus graphite yarns in series of layers and progressively varying the rotational speed of the rings carrying the spools of the graphite fiber yarns in each layer as the mandrel is fed at a constant speed. The continuously varying rotational speeds of these rings and the wrapping angles to which the yarns are applied to the mandrel result in a unique structure achieved by optimizing the wrapping angles in each layer at desired progressive changes in fiber orientation different in each layer, and from layer to layer in the structure.

摘要翻译： 一种新颖的结构构件，例如高尔夫球杆杆或其他锥形管状构件，具有非常高的抵抗扭转挠度的特定期望的纵向偏转以及高强度和更有利于前端的重心，由树脂提供 多层石墨纤维结构，其中多层复合结构的每层中的纤维取向沿着轴的长度和层之间期望的取向关系变化以实现特性的独特组合。

公开(公告)号：US4124670A

公开(公告)日：1978-11-07

申请号：US703137

申请日：1976-07-07

申请人： Andrew M. Cecka ,  Paul G. Pawling

发明人： Andrew M. Cecka ,  Paul G. Pawling

IPC分类号： A63B49/10 ,  B29D27/00

CPC分类号： A63B49/10 ,  B29C70/04 ,  A63B2209/023 ,  B29K2307/00 ,  Y10S264/05 ,  Y10S264/13 ,  Y10S264/17

摘要： A novel structural member, such as a tennis racket frame, having an unusually high strength to weight ratio is provided comprising an expanded foamed plastic core integrally bonded to a shell comprising at least one layer of resin-coated unidirectionally oriented graphite fibers, the shell completely encasing the core at any transverse cross section of the structural member, said core comprising from about 25 to about 75 volume percent of a low density cellular filler material, such as chopped cork, and from zero to about 60 weight percent of a high density weight control material, such as barium sulfate.The structural member is prepared by preparing a foamable resin composition comprising a resin component, a blowing agent, from about 7 to about 50 weight percent of a low density cellular filler material and from zero to about 60 weight percent of a high density weight control material, forming said composition into an elongated core strip, wrapping said core strip with at least one sheet of resin-coated unidirectionally oriented graphite fibers, arranging said wrapped core within a mold cavity, sealing the mold cavity and activating the foamable resin composition to cause expansion and generate pressure within the mold cavity and thereby provide intimate bonding of the core to the shell.

摘要翻译： 提供了具有非常高的重量比的网球拍框架的新型结构构件，其包括一体地结合到壳体上的膨胀的发泡塑料芯，包括至少一层树脂涂覆的单向取向的石墨纤维，所述壳完全 将芯包围在结构构件的任何横截面处，所述芯包含约25至约75体积％的低密度细胞填充材料，例如切碎的软木，以及从零至约60重量％的高密度重量 控制材料，如硫酸钡。

公开(公告)号：US4114880A

公开(公告)日：1978-09-19

申请号：US841939

申请日：1977-10-13

申请人： Andrew M. Cecka

发明人： Andrew M. Cecka

IPC分类号： A63B49/02 ,  A63B49/10

CPC分类号： A63B49/03

摘要： A tennis racket assembly comprising a long structural member, a short structural member and two yoke pieces at the junction of said members. The long member extends from the grip end of the handle, up one side the handle, around the major portion of the ellipsoid head and down the other side of the handle to the grip end. The short member extends across the throat of the racket and completes the ellipsoid shape of the head, joining the long member at two junctions.Each yoke piece has the external shape of the letter "Y" and has at least two branch portions and a trunk portion. The trunk portion of each yoke piece is wrapped around a portion of the long member between the junction and the head of the racket, one branch portion of each yoke piece overlies a surface at one end of the short member, and the other end of each yoke piece overlies an opposite surface at said end of said short member.

摘要翻译： 一种网球拍组件，包括长结构构件，短结构构件和在所述构件的接合处的两个轭件。 长形构件从手柄的把手端部向上延伸一个手柄，围绕着椭圆形头部的主要部分并且沿着手柄的另一侧向下延伸到抓握端部。 短构件延伸穿过球拍的喉部并且完成头部的椭圆形状，在两个结处连接长构件。

公开(公告)号：US4212461A

公开(公告)日：1980-07-15

申请号：US922984

申请日：1978-07-10

申请人： Andrew M. Cecka ,  Paul G. Pawling

发明人： Andrew M. Cecka ,  Paul G. Pawling

IPC分类号： A63B49/10

CPC分类号： A63B49/10 ,  A63B2209/023

摘要： A novel structural member, such as a tennis racket frame, having an unusually high strength to weight ratio is provided comprising an expanded foamed plastic core integrally bonded to a shell comprising at least one layer of resin-coated unidirectionally oriented graphite fibers, the shell completely encasing the core at any transverse cross section of the structural member, said core comprising from about 25 to about 75 volume percent of a low density cellular filler material, such as chopped cork, and from zero to about 60 weight percent of a high density weight control material, such as barium sulfate.The structural member is prepared by preparing a foamable resin composition comprising a resin component, a blowing agent, from about 7 to about 50 weight percent of a low density cellular filler material and from zero to about 60 weight percent of a high density weight control material, forming said composition into an elongated core strip, wrapping said core strip with at least one sheet of resin-coated unidirectionally oriented graphite fibers, arranging said wrapped core within a mold cavity, sealing the mold cavity and activating the foamable resin composition to cause expansion and generate pressure within the mold cavity and thereby provide intimate bonding of the core to the shell.

摘要翻译： 提供了具有非常高的重量比的网球拍框架的新型结构构件，其包括一体地结合到壳体上的膨胀的发泡塑料芯，包括至少一层树脂涂覆的单向取向的石墨纤维，所述壳完全 将芯包围在结构构件的任何横截面处，所述芯包含约25至约75体积％的低密度细胞填充材料，例如切碎的软木，以及从零至约60重量％的高密度重量 控制材料，如硫酸钡。 通过制备包含树脂组分，发泡剂，约7至约50重量％的低密度多孔填充材料和0至约60重量％的高密度重量控制材料的可发泡树脂组合物制备结构构件 ，将所述组合物形成细长的芯条，用至少一片树脂涂覆的单向取向的石墨纤维包裹所述芯条，将所述包裹的芯放置在模腔内，密封模腔并激活可发泡树脂组合物以引起膨胀 并在模腔内产生压力，从而提供芯与壳的紧密结合。