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公开(公告)号：US4192505A
公开(公告)日：1980-03-11
申请号：US848940
申请日：1977-11-07
CPC分类号： A63B49/10 , A63B2209/023 , A63B2225/01 , A63B60/02 , A63B60/48 , A63B60/52
摘要： A game racket frame such as a tennis racket frame having controlled stiffness properties and light weight making it possible to selectively add weight to the racket at the region in which such weight will do the most good, namely, along the transverse axis of the stringing area. The racket frame itself comprises an integral structure including a head portion, a throat portion and a handle portion, the structure being composed of high modulus fibers such as graphite, glass, boron or the like, in a matrix of a synthetic resin. The frame has a non-uniform cross-sectional configuration and a taper whereby the thickness of the handle portion is greater than the thickness in the head portion, and the thickness of the throat is intermediate that of the handle portion and the head portion. The frame is such as to provide a tapered beam with the greatest area moment of inertia where the bending moments are highest. A tennis racket utilizing the improved frame has an improved coefficient of restitution at high velocity impact, improved ball rebound characteristics for off-center hits and relatively low vibration transmissibility.
摘要翻译： 诸如具有可控刚度特性和轻重量的网球拍框架的游戏球拍框架，使得可以在这种重量将最好的区域（即，沿着穿线区域的横向轴线）选择性地增加球拍的重量 。 球拍框架本身包括一个包括头部，喉部和手柄部分的整体结构，该结构由合成树脂的基体中的诸如石墨，玻璃，硼等的高模量纤维构成。 框架具有不均匀的横截面构造和锥形，由此手柄部分的厚度大于头部部分中的厚度，并且喉部的厚度与手柄部分和头部部分的厚度相等。 该框架是提供具有最大面积转动惯量的锥形梁，其中弯矩最高。 使用改进的框架的网球拍在高速冲击下具有改善的恢复系数，改进了偏心击球的球回弹特性和相对较低的振动传递率。
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公开(公告)号：US6139040A
公开(公告)日：2000-10-31
申请号：US82462
申请日：1998-05-20
申请人： Douglas E. Dempsey
发明人： Douglas E. Dempsey
IPC分类号： B29C65/02 , B29C65/06 , B29C65/08 , B29C65/36 , B29C65/48 , B29C65/58 , B60B5/02 , B62K19/06 , B62K19/16
CPC分类号： B60B5/02 , B29C65/02 , B29C65/3644 , B29C65/58 , B29C66/54 , B29C65/0672 , B29C65/08 , B29C65/48 , B29C65/4895 , B29C66/547 , B29L2015/006 , B29L2031/322
摘要： A molded structural bicycle component design, such as wheels and frames, which may incorporate complementary halves and at least one shear bond to allow efficient manufacturing and assembly. The molded design which may be applied in a host of different applications, including a bicycle frame and wheel, where demanding loads exist in normal use. Details of the joint and its design are provided. Integral bearings, foam tire adaptations, symmetrically opposite designs, and compression bonding techniques are described. Various cross sections may be made at different stress areas. A method of inserting a reinforcing tube in various high stress areas is also described. A host of bonding techniques including the use of electromagnetically active material are accommodated by the designs. The design may include the use of spacers in the vicinity where methods of retention of accessories or components require compressing from both sides such as the wheels, head tube, bottom bracket, and suspension attachment. The invention may include semicircular boundaries of a wheel assembly so as to define a valve stem hole after assembly.
摘要翻译： 模制的结构自行车部件设计，例如轮和框架，其可以包括互补的两半和至少一个剪切接合以允许有效的制造和组装。 可以应用于主要不同应用的模制设计，包括自行车车架和车轮，其中正常使用中存在苛刻的负载。 提供了关节及其设计的细节。 描述了一体式轴承，泡沫轮胎适应，对称设计和压接技术。 可以在不同的应力区域形成各种横截面。 还描述了将加强管插入各种高应力区域中的方法。 包括使用电磁活性材料的粘合技术的主机通过设计来适应。 该设计可以包括在附近使用间隔件，附件或部件的保持方法需要从两侧压缩，例如轮子，头管，底部支架和悬挂附件。 本发明可以包括轮组件的半圆形边界，以便在组装之后限定阀杆孔。
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公开(公告)号：US5762405A
公开(公告)日：1998-06-09
申请号：US724070
申请日：1996-09-30
申请人： Douglas E. Dempsey
发明人： Douglas E. Dempsey
CPC分类号： B29C65/02 , B29C65/362 , B29C65/58 , B29C66/54 , B60B5/02 , B29C65/0672 , B29C65/08 , B29C65/48 , B29C65/4895 , B29C66/8322 , B29L2015/006 , B29L2031/322
摘要： A molded wheel design may incorporate identical halves and a shear bond to allow efficient manufacturing and assembly. The wheel design which may be applied in a host of different applications including a bicycle wheel where demanding loads exist in normal use. Integral bearings, foam tire adaptations, symmetrically opposite designs, and compression bonding techniques are described. A host of bonding techniques including the use of electromagnetically active material are accommodated by the designs. Spacers in the vicinity of the hub portion and semicircular boundaries so as to define a valve stem hole after assembly can be included.
摘要翻译： 模制轮设计可以包含相同的两半和剪切粘合以允许有效的制造和组装。 可以应用于主要不同应用的车轮设计，包括在正常使用中存在苛刻负载的自行车车轮。 描述了一体式轴承，泡沫轮胎适应，对称设计和压接技术。 包括使用电磁活性材料的粘合技术的主机通过设计来适应。 可以包括在毂部分和半圆形边界附近的间隔件，以便在组装之后限定阀杆孔。
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公开(公告)号：US3998457A
公开(公告)日：1976-12-21
申请号：US534755
申请日：1974-12-20
CPC分类号： A63B49/10 , A63B49/12 , A63B2049/0205 , A63B2049/103 , A63B2209/023 , A63B60/06 , A63B60/08 , A63B60/10 , A63B60/48
摘要： This invention is concerned with a tennis racket frame which comprises a pair of channel-shaped members in interengaging relationship, the channel-shaped members forming the faces of the head portion of the racket frame, and the sidewalls of each of the members having apertures therein in alignment to provide string holes therein. The racket frame is preferably composed of a synthetic resinous material which may be integrally reinforced with high modulus reinforcing fibers, or reinforced by attached facings of high strength, high modulus materials.
摘要翻译： 本发明涉及一种网球拍框架，其包括一对相互接合关系的通道形构件，所述通道形构件形成球拍框架的头部的表面，并且每个构件的侧壁具有孔 对准以在其中提供弦孔。 球拍框架优选由合成树脂材料组成，其可以用高模量增强纤维一体地增强，或者通过高强度，高模量材料的附着面加强。
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