Weight adjustable shock and vibration absorbing tennis racket
US5236197A · kind A · utility
Inventor
Key dates
| Filing date | Aug 23, 1991 |
| Grant date | Aug 17, 1993 |
| Priority date | — |
| Expiry date | Aug 23, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B60/54
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.