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81. 发明授权

US4531738A Racquetball racquet with increased hitting area 失效
标题翻译：壁球球拍击球面积增加
公开(公告)号：US4531738A
公开(公告)日：1985-07-30
申请号：US560538
申请日：1983-12-12
申请人： Raymond L. Mortvedt , Steven M. Thompson
发明人： Raymond L. Mortvedt , Steven M. Thompson
IPC分类号： A63B49/02 , A63B49/00 , A63B49/12
CPC分类号： A63B49/00 , A63B2049/0202 , A63B2049/0203 , A63B2049/0204 , A63B2049/0207 , A63B2049/0212
摘要： The improved racquetball racquet has a strung surface which is larger in area than the strung surface of a conventional racquet, and in which the strung area is both longer in length and width than the strung area of a conventional racquet. However, the overall weight and balance of a conventional racquetball racquet which have proven necessary for good playing characteristics for all such racquets have been maintained. The racquet has synergistically combined the weight of the racquet, the center of mass of the racquet, the stiffness of the frame, and the response characteristics to create a racquet of sufficient durability with a larger "sweet spot" to facilitate the playing of the sport and to increase the level of skill, particularly of the novice and intermediate players. The racquet has an overall length of 181/2 inches to 221/2 inches and a width of 12 inches to 143/4 inches, a weight of 220 grams to 270 grams, and a center of gravity at a location within a range of 3/4 inch toward the handle and 1/2 inch toward the head as measured from the longitudinal center point of the racquet.
摘要翻译：改进的球拍球拍具有比常规球拍的表面大的面积，并且其长度和宽度都比传统球拍的弦杆面积更长。然而，已经保持已经证明对于所有这样的球拍具有良好打球特性所必需的常规壁球拍的整体重量和平衡。球拍协调地将球拍的重量，球拍质量的中心，框架的刚度和响应特性相结合，创造出足够的耐用性的球拍，并具有更大的“最佳点”，以促进运动的发挥并提高技能水平，特别是新手和中级选手的技能水平。球拍的总长度为181/2英寸至221/2英寸，宽度为12英寸至143/4英寸，重量为220克至270克，重心位于3范围内 / 4英寸朝向手柄，1/2英寸朝向头部，从球拍的纵向中心点测量。

82. 发明授权

US4275885A Tennis racket 失效
标题翻译：网球拍
公开(公告)号：US4275885A
公开(公告)日：1981-06-30
申请号：US64318
申请日：1979-08-06
申请人： John G. Howe
发明人： John G. Howe
IPC分类号： A63B49/02
CPC分类号： A63B49/02 , A63B2049/0203 , A63B2049/0204 , A63B2049/0207 , A63B60/52
摘要： The head of the tennis racket has an oblong, oval shape so that the strung ball hitting area has a length to width ratio of about 1.75:1.
摘要翻译：网球拍的头部具有椭圆形椭圆形，使得球形击球区域的长宽比约为1.75：1。

83. 发明授权

KR100416051B1 긴테니스라켓 失效
公开(公告)号：KR100416051B1
公开(公告)日：2004-07-19
申请号：KR1019960702074
申请日：1995-08-22
申请人： 베네톤 스포츠시스템 유에스에이, 인코포레이티드
发明人： 데이비스,스티븐제이. , 테르자기,안드레
IPC分类号： A63B49/00
CPC分类号： A63B49/02 , A63B49/022 , A63B49/10 , A63B2049/0202 , A63B2049/0203 , A63B2049/0207 , A63B2049/0212
摘要： A tennis racquet has an overall length greater than 28 inches, preferably between 29 and 32 inches, an egg shape strung surface having a length of at least 14 inches, and a strung surface area greater than 95 square inches. The frame is of widebody construction and formed of a composite material so as to have a minimum weight per unit length. While the overall length is increased, the strung weight of the racquet does not exceed 300 grams, and the mass moment of inertia about the butt does not exceed 56 g-m2. The foregoing racquet produces a number of playing advantages, while maintaining a conventional mass moment of inertia about the handle and thus retain good maneuverability.
摘要翻译：网球拍具有大于28英寸的总长度，优选地在29和32英寸之间，具有至少14英寸的长度的蛋形串表面和大于95平方英寸的串联表面面积。该框架具有宽体结构并由复合材料形成，从而具有每单位长度的最小重量。虽然整体长度增加，但球拍的重量不超过300克，并且杆身的质量惯性矩不超过56克每平方米。前述球拍产生许多游戏优势，同时在手柄周围保持传统的质量惯性矩并因此保持良好的可操作性。

84. 发明授权

KR1019970006234B1 배드민턴 라켓 无效
标题翻译： BADMINTON RACKET
公开(公告)号：KR1019970006234B1
公开(公告)日：1997-04-25
申请号：KR1019920022545
申请日：1992-11-27
申请人： 윌슨스포오팅굿드즈컴파니
发明人： 포-젠쳉
IPC分类号： A63B49/00
CPC分类号： A63B49/02 , A63B49/032 , A63B60/06 , A63B60/08 , A63B60/10 , A63B2049/0203 , A63B2049/0204 , A63B2049/0207 , A63B2049/0211 , A63B2049/0212 , A63B2049/0217 , A63B2102/04
摘要： A badminton racket (20) has a frame (21) with a head portion (22), a throat portion (23), and a shaft portion (24) which terminates in a handle portion (25). The racket (20) is lighter than prior badminton rackets, and the balance point or center of gravity of the racket is closer to the head end (33) than the handle end (30).

85. 发明授权

KR1019910009207B1 테니스라켓 失效
公开(公告)号：KR1019910009207B1
公开(公告)日：1991-11-05
申请号：KR1019870010039
申请日：1987-09-10
申请人： 윌슨스포오팅굿드즈컴파니
发明人： 마아크엘카라섹
IPC分类号： A63B49/00
CPC分类号： A63B49/02 , A63B49/03 , A63B49/10 , A63B60/48 , A63B2049/0203 , A63B2049/0204 , A63B2049/0207 , A63B2049/0211 , A63B2060/002
摘要： The stiffness of a tennis racket is adjusted so that the first mode of bending of the racket under free-free constraint conditions is between 170 Hz and 250 Hz preferably between 200 Hz and 210 Hz. The second mode of bending under clamped-free constraint conditions is between 215 Hz and 315 Hz and preferably between 230 Hz and 265 Hz.

86. 发明授权

KR1019890000006B1 개선된 라켓볼 라켓 구조 失效
标题翻译：具有增加兴趣区域的可扩展场地
公开(公告)号：KR1019890000006B1
公开(公告)日：1989-03-02
申请号：KR1019840006404
申请日：1984-10-16
申请人： 엑텔론인코포레이션
发明人： 레이몬드엘.몰트베트 , 스티븐엠.톰슨
IPC分类号： A63B49/12
CPC分类号： A63B49/00 , A63B49/02 , A63B2049/0202 , A63B2049/0203 , A63B2049/0204 , A63B2049/0207 , A63B2049/0212
摘要： The racquet comprises a frame having a head with a strung surface. This surface has a length between 12 and 14.75 inches, i.e. between 53 and 68% of the racquet length. The racquet centre of gravity is offset from the longitudinal centre point. Pref. the head has an oblong shape with a slightly flattened outer end. The centre of gravity is located with in a range of 3/4 of an inch toward the handle and 1/2 inch toward the head w.r.t. the centre point.
摘要翻译：球拍包括具有带有表面的头部的框架。该表面具有12至14.75英寸之间的长度，即球拍长度的53至68％之间的长度。球拍重心偏离纵向中心点。县。头部具有椭圆形，外形略微扁平。重心位于距手柄3/4英寸的范围内，朝向头部w.r.t。1/2英寸。中心点。

87. 发明公开

EP1343564A1 SPORTS RACKET HAVING A UNIFORM STRING STRUCTURE 审中-公开
标题翻译：具有均匀覆盖结构SPORT球拍
公开(公告)号：EP1343564A1
公开(公告)日：2003-09-17
申请号：EP01996415.4
申请日：2001-11-15
申请人： Brandt, Richard A.
发明人： Brandt, Richard A.
IPC分类号： A63B49/02
CPC分类号： A63B49/02 , A63B2049/0201 , A63B2049/0203 , A63B2049/0204 , A63B2049/0207 , A63B2060/002
摘要： A sports racket, for tennis and the like sports, has an elongated handle attached to a head having a racket face, which is spanned by a uniform string structure. The head has four sides, forming a non-elliptical shape, in which the opposite sides are substantially parallel. Longitudinal strings, all of which are substantially identical in length and run essentially parallel to each other, and transversal strings, all of which are substantially identical in length and run essentially parallel to each other and perpendicular to the longitudinal axis, span the racket face. The racket has a larger racket face than conventional rackets, while maintaining the length and weight measurements of conventional rackets, resulting in a very large sweet spot and more good hits. The racket has maximally long strings at all points on the racket face and strings substantially identical in length at all points on the racket face resulting in a uniformity of response for off-center hits, an increase in the ball rebound speed, a decrease in angular deflection for off-center hits, and the ability to set the tension of the strings such that they vibrate with the same frequency. The racket has a greater moment of inertia than conventional rackets, resulting in reduced racket rotation and a reduction of injuries to players, such as "tennis elbow".

88. 发明授权

EP0723470B1 LONG TENNIS RACQUET 失效
标题翻译：与伟大的高度网球拍
公开(公告)号：EP0723470B1
公开(公告)日：2000-03-29
申请号：EP95929634.4
申请日：1995-08-22
申请人： PRINCE SPORTS GROUP, INC.
发明人： DAVIS, Stephen, J. , TERZAGHI, Andre
IPC分类号： A63B49/00
CPC分类号： A63B49/02 , A63B49/022 , A63B49/10 , A63B2049/0202 , A63B2049/0203 , A63B2049/0207 , A63B2049/0212
摘要： A tennis racquet has an overall length greater than 28 inches, preferably between 29 and 32 inches, an egg shape strung surface having a length of at least 14 inches, and a strung surface area greater than 95 square inches. The frame is of widebody construction and formed of a composite material so as to have a minimum weight per unit length. While the overall length is increased, the strung weight of the racquet does not exceed 300 grams, and the mass moment of inertia about the butt does not exceed 56 g-m2. The foregoing racquet produces a number of playing advantages, while maintaining a conventional mass moment of inertia about the handle and thus retain good maneuverability.

89. 发明公开

EP0744193A3 Tennis racquet 失效
标题翻译：网球拍
公开(公告)号：EP0744193A3
公开(公告)日：1997-05-21
申请号：EP96107749.2
申请日：1996-05-15
申请人： WILSON SPORTING GOODS COMPANY
发明人： McMillan, Willie , Cheng, Po-Jen
IPC分类号： A63B49/02
CPC分类号： A63B49/02 , A63B49/10 , A63B49/11 , A63B51/08 , A63B2049/0201 , A63B2049/0202 , A63B2049/0203 , A63B2049/0204 , A63B2049/0207 , A63B2049/0211 , A63B2049/0212 , A63B2049/0217
摘要： A tennis racquet is provided with increased resistance against twisting of the racquet frame by increasing the width of the frame just above the area where the yoke and Y-shaped arms of the throat merge with the U-shaped upper portion of the head. The width of the frame in that area is preferably at least 0.600 inch, and more preferably about 0.640 inch. The ratio of the width and the height is about 0.54. The increased resistance to twisting permits the frame to be wider, thereby increasing the maximum width of the strings, reducing the difference between the maximum string width and maximum string length, and increasing the polar moment of inertia of the racquet.

90. 发明授权

EP0456407B1 Badminton racquet 失效
标题翻译：羽毛球拍
公开(公告)号：EP0456407B1
公开(公告)日：1995-06-28
申请号：EP91303959.0
申请日：1991-05-02
申请人： PRINCE SPORTS GROUP, INC.
发明人： Davis, Stephen J.
IPC分类号： A63B49/00
CPC分类号： A63B49/02 , A63B49/022 , A63B2049/0203 , A63B2049/0204 , A63B2049/0207 , A63B2049/0211 , A63B2049/0212 , A63B2049/0217
摘要： A badminton racquet includes a head (10), a shaft (12), and a Y-joint (14) connecting the head to the shaft. The Y-joint geometry offers improved transmission of stress from the head to the shaft, and the resulting increased length of the centre longitudinal strings (18a) improves power. Preferably, the frame has an improved aerodynamic profile, and a kick shaft to produce greater head speed at the point of impact.

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