TENNIS BALL HAVING A THERMOPLASTIC CORE

TENNIS BALL HAVING A THERMOPLASTIC CORE

A tennis ball including a non-foamed thermoplastic core defining an internal volume. The core includes a thermoplastic material having a specific gravity of 0.86 to 1.38, a flexural modulus of 2.0 to 50.0 MPa, and a Shore D hardness of 10 to 70. A thickness of the thermoplastic material is between 3...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SIMONUTTI FRANK M, LEE CHLOE J, DILLON WILLIAM E, VOGEL DAVID A, THURMAN ROBERT T
Format: Patent
Sprache:chi ; eng
Schlagworte:
AMUSEMENTS
APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING,CLIMBING, OR FENCING
BALL GAMES
GAMES
HUMAN NECESSITIES
SPORTS
TRAINING EQUIPMENT
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Beschreibung
Zusammenfassung:A tennis ball including a non-foamed thermoplastic core defining an internal volume. The core includes a thermoplastic material having a specific gravity of 0.86 to 1.38, a flexural modulus of 2.0 to 50.0 MPa, and a Shore D hardness of 10 to 70. A thickness of the thermoplastic material is between 3.0 and 8.0 mm. The thickness of the thermoplastic material is configured to maintain dimensional stability at internal pressures of between 0 and 1.03 bar (0 and 15 psi). 一种网球，包括限定内部体积的非泡沫热塑性芯体。该芯体包括比重为0.86至1.38、弯曲模量为2.0至50.0 MPa、且肖氏D硬度为10至70的热塑性材料。热塑性材料的厚度在3.0和8.0 mm之间。热塑性材料的厚度被构造成在0和15磅/平方英寸之间的内压下维持尺寸稳定性。