发明公开
- 专利标题: LONG STRING RACQUETS
- 专利标题(中): 与长页面BAT
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申请号: EP97924511申请日: 1997-04-24
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公开(公告)号: EP0907389A4公开(公告)日: 2000-02-09
- 发明人: MORTVEDT RAYMOND LEE , GRIMES RONALD ALAN , COLBURN TODD BERDELL
- 申请人: EF COMPOSITE TECHNOLOGIES L P
- 专利权人: EF COMPOSITE TECHNOLOGIES L P
- 当前专利权人: EF COMPOSITE TECHNOLOGIES L P
- 优先权: US63843996 1996-04-26
- 主分类号: A63B49/08
- IPC分类号: A63B49/08 ; A63B51/00 ; A63B51/12
摘要:
A string and handled racquet (20) has at least a portion of the strung length of at least some of its strings (24) within a cavity (28) defined by the racquet's handle (26) or handle/shaft combination (118/120). The cavity (28) may be nearly as long as is the handle (or handle/shaft) itself. The "long" strings (34) are connected to one or more connection points within the cavity (28), which are displaced from the cavity opening by at least one-half the length of the handle or handle/shaft combination. The "long" strings are disposed in free space or with only minor obstruction within the cavity. The "long" strings are subject to being displaced a greater distance from the plane of the racquet during ball strikes and strokes than are the shorter strings for which they substitute, beneficially permitting a greater energy storage in the strings and racquet frame, a larger sweet spot, longer ball contact, and a more prolonged and greater return of energy to the struck ball.
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