Tennis ball practice device
OwnerSibyeong JEONinventor
Life of this patent
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Abstract
A tennis ball practice device for practicing continuous/repeated tennis ball strikes. A tennis ball practice device according to the present invention is configured such that ¾ of the inner cover of a tennis ball and ¼ of the outer cover thereof are tied and connected to a string. The same string used to tie the ball is used to make a connection ring having a diameter of about 10 cm. A high-elasticity string and a rotatable pulley are successively connected thereto. A low-elasticity string extending through the last ring of the rotatable pulley, a ring mark connected to both ends of the low-elasticity string, a high-elasticity string connected to both ends of the ring mark, and a tube-type fabric ring connected to both ends of the high-elasticity string are retained by pins, and the tennis ball is then struck.
Claims3
A tennis ball practice device, wherein:
- a first fastening part is formed by sequentially connecting a tennis ball tied with a thread, a connection ring, a high-elasticity string, and a rotatable pulley;
- a second fastening part includes a low-elasticity string passing through an inside of a ring formed at an opposite end of the rotatable pulley, a ring mark connected to both ends of the low-elasticity string, a high-elasticity string connected to both ends of the ring mark, a tube-type fabric ring connected to both ends of the high-elasticity string, and first and second pins capable of fixing the tube-type fabric ring to a floor;
- and
- when the ball is struck, the ring of the rotatable pulley riding the low-elasticity string moves constantly in a direction in which the ball is struck, and the ball that is repulsed returns to a striking side.
Dependencies are inferred from the claim text.