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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0886869 (1978-03-15) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 19 인용 특허 : 0 |
A vehicle barricade including a barrier plate which can be raised or lowered and a counterweighted sector mounted near the side of the barrier plate. The counterweight is mounted on the sector so that the barrier plate will remain in the raised or lowered position without independent mechanical aid.
A vehicle barricade comprising: A pivotally mounted barrier plate which can be raised or lowered about a pivot, at least one secTor mounted near the end of said barrier plate, said sector having one edge thereof fixed to said barrier plate and extending rearwardly therefrom in an arc of approximatel
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