发明授权
- 专利标题: Weight adjustable shock and vibration absorbing tennis racket
- 专利标题(中): 重量可调震动和减震网球拍
-
申请号: US752185申请日: 1991-08-23
-
公开(公告)号: US5236197A公开(公告)日: 1993-08-17
- 发明人: Dennis Chen
- 申请人: Dennis Chen
- 专利权人: Dennis Chen
- 当前专利权人: Dennis Chen
- 主分类号: A63B49/02
- IPC分类号: A63B49/02 ; A63B49/04 ; A63B59/00
摘要:
A weight adjustable, shock and vibration absorbing tennis racket comprising a generally oval shaped headframe with a handle attached thereto, and a striking surface therein formed by stringing the headframe with a string in the conventional manner. A pair of elongate recesses are formed along the inner periphery of the headframe at opposed positions thereon and aligned with the center of percussion of the headframe. A pair of projections are formed on respective opposed longitudinal sides of each recess. A vibration absorbing rib can be releasably secured to each recess, with the ends thereof snap fitting into respective projections of a corresponding recess. String holes for cross strings passing through a recess are arranged in two staggered rows with a pair of adjacent cross strings diverging to a respective pair of adjacent string holes disposed on opposing rows. Adjacent cross strings pass around and contact opposite sides of the corresponding rib when attached. A shock absorbing counterweight can be inserted into each recess, snap fitting around a corresponding rib.
公开/授权文献
- US5739534A Methods and apparatus for detecting fluids 公开/授权日:1998-04-14
信息查询