发明名称 Rackets
摘要 This invention relates to a games racket, such as a tennis racket which is "double-strung", i.e. the stringing is disposed in two generally parallel planes located on opposite sides of the head frame. The head frame has a cross-sectional profile generally resembling an "extended D" having a body portion and extensions projecting transversely from opposite ends of the upright limb of the "D" to define the side walls of a generally radially outwardly opening channel of which the body of the "D" forms the base. The channel extends around the outer periphery of the head frame and the apertures which receive and locate the stringing open into the channel through said extensions. The stringing is knotted-off within the channel, and the channel also accommodates interconnecting portions of the stringing which interconnect the string portions making up the two playing surfaces in the two planes.
申请公布号 US4204680(A) 申请公布日期 1980.05.27
申请号 US19780895021 申请日期 1978.04.10
申请人 BLACKBURNE, ROBIN M 发明人 BLACKBURNE, ROBIN M
分类号 A63B51/06;(IPC1-7):A63B51/06 主分类号 A63B51/06
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