Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Target
Patent
1991-07-15
1992-01-21
Grieb, William H.
Amusement devices: games
Aerial projectile game; game element or accessory therefor...
Target
A63B 6900
Patent
active
050822624
ABSTRACT:
The training device for improving a baseball batter's swing includes a forward foot actuated switch which is normally open but is closed when the baseball batter takes the short forward foot step during the batter's swing. A wrist movement switch in one embodiment is mechanically linked to a wrist strap on the aft or rearward wrist of the batter. The wrist switch is normally closed and is subsequently opened due to the swinging motion of the wrist during the batter's swing movement. An alarm system is coupled to the foot switch and the wrist switch and further includes, in one embodiment, an audible alarm device which is activated thereby issuing an alarm upon a predetermined sequential movement of the batter's forward foot and wrist during the swing movement. The predetermined sequential movement is the batter's short step, that closes the foot switch, prior to the batter's swinging of the wrist. Movement of the wrist during the bat swing opens the wrist switch and deactivates the alarm. The alarm sounds when the foot switch is closed and the wrist switch remains closed due to the batter taking the short foot step prior initiating the bat swing as sensed by wrist movement.
REFERENCES:
patent: 2134451 (1938-10-01), Mogren
patent: 3169022 (1965-02-01), Kretsinger
patent: 3368541 (1968-02-01), Brink
patent: 4194735 (1980-03-01), Wilson
patent: 4225133 (1980-09-01), Kiray
patent: 4577868 (1986-03-01), Kiyonaga
patent: 4955608 (1990-09-01), Dougherty et al.
Grieb William H.
Kain, Jr. Robert C.
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