| 摘要 |
The batting helmet is a training helmet having an extendable panel on each side of the helmet. Each panel is slidably mounted in a hollow case or sheath attached to the ear flap and extends forward from the ear flap at eye level. The panel is extendable in discrete increments, preferably to three different lengths, to offer a greater or lesser degree of restriction of the batter's field of vision according to the batter's skill level. In order to accomplish incremental extension, the panel has a resilient tab or button that locks into one of a plurality of slots defined in the case to lock the panel at the desired length. The panel restricts the batter's vision to focus the batter's attention on the pitched ball, often requiring the batter to turn his head to see the ball leave the pitcher's hand and follow its flight.
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