Reinforced foam core composite structure used in a tennis racket frame.

摘要

A tubular frame structure adapted for use as a tennis racket comprising: a reinforced foam core including a foam core (24) and at least one honeycomb reinforcement layer (26-28); a rigid composite tubular shell (22) surrounding said reinforced foam core (24); and a plurality of surfaces defining string holes (30) passing laterally through said tubular frame structure, said string holes (30) passing through said foam core (24) and rigid composite tubular shell (22), but not passing through said honeycomb reinforcement layer (26-28).