发明授权
US06702699B2 Self-contained sport ball inflation mechanism 有权
独立运动球通胀机制

Self-contained sport ball inflation mechanism
摘要:
An inflatable sport ball, such as a basketball, a football, a soccer ball, a volley ball or a playground ball, is provided with a self-contained inflation mechanism for inflating or more likely adding pressure to the ball. The mechanism is a pump which is inside of the ball and which is operable from outside of the ball to pump ambient air into the ball.
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