Tennis racquet or racquet for other ball games has oval frame with hollow cross-section with groove on outside for string and longitudinal slits at intervals

摘要

The head (2) of the tennis racquet (1) has an oval frame (5) with strings (6) crossing each other at right angles. The strings may pass through holes in the hollow frame section. The strings may engage with a band lying at the bottom of a groove in the outside of the hollow frame section. Cross-members form longitudinal slits at intervals along the frame. Branches of the frame (3.1) form a heart piece (3) and join to form a handle (4) with a handgrip (4.1).