Tennis racket with paired rollers
OwnerHenry Hsuinventor
Life of this patent
Estimating the term…
Abstract
An attachment for a tennis racket is provided. The attachment has a curvature capable of engaging with a U-shaped groove of the frame of the racket, a pair of first and second lateral walls connected by two end portions without a bottom, a plurality of shafts disposed spaced apart in the attachment and connected at their two ends to the inner surfaces of the lateral walls, a plurality of rollers of saddle outer periphery rotatably engaged on the shafts on pair by pair basis and a plurality of partition posts projected transversely from the inner surface of the first lateral wall and positioned spaced apart between each pair of the rollers. A string comes in and out of the string holes in the groove and suspends from each pair of the rollers.
Claims3
A tennis racket with paired rollers comprising:
- a tennis racket comprising an oval head and a handle, said head including a frame of U-shaped section, a groove formed in outer periphery of the frame and a pluralilty of string holes formed spaced apart in a bottom of the groove;
- an attachment engaged with the groove of the frame having a curvature similar to that of the groove, a pair of first and second lateral wall connected by two end portions without a bottom, a plurality of shaft spacedly disposed in the attachment and connected at their two ends to the inner surfaces of the first and second lateral walls, a plurality of rollers rotatably engaged on the shafts and positioned on pair by pair basis and a plurality of partition posts projected spaced apart from the inner wall of the first lateral wall and positioned between each pair of the rollers;
- a string coming in and out of the string holes and suspended from each pair of the rollers;
- whereby a string surface is made inside said frame.
Dependencies are inferred from the claim text.