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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
|
출원번호 | US-0925099 (1992-08-06) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 4 인용 특허 : 0 |
A housing is provided having multiple openings in its front wall each opened and closed by a closure positioned by a pneumatic cylinder. Each closure, when retracted from its opening, provides a target for the pitcher. A programmable controller in the housing permits the preselection and dwell time
An apparatus for training a pitcher by providing multiple sequentially presented targets at which a ball is to be thrown, said apparatus comprising, a housing having a front wall defining openings through which a thrown ball may pass, target assemblies mounted interiorly of said housing adjacent eac
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