| 摘要 |
A batting swing device is presented which enables a batter to determine whether or not his swing is good or bad. The device is designed for use by both baseball and softball players. It is intended to teach hitters the correct path that a bat must travel during a swing in order to most effectively hit a ball to all parts of a playing field. The device is approximately 5 inches in outer diameter and three inches in inner diameter, and shaped similar to a doughnut. The inner diameter is flat to enable the device to easily slip on and off a baseball bat. The device is made of polyethylene plastic and weighs approximately two ounces. When a batter takes a swing with the device slipped onto the bat and above the batter's hands, the direction of travel of the device will determine whether or not the batter has made a good swing. If the device travels towards the pitcher's mound, or within a 50 degree angle measured off of the pitcher's mound, the batter's swing was a correct one. On the other hand, if the device travels to either the left or the right of the desired 50 degree angle, the batter has swung the bat incorrectly. Depending on which side the device lands, the batter will be able to discover the flaws in his swing.
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