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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0669476 (1976-03-23) |
발명자 / 주소 |
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인용정보 | 피인용 횟수 : 30 인용 특허 : 0 |
An improved breakaway coupling is provided which is particularly suitable for use in assemblies which are subject to impact such as roadway lamp standards, highway signs and the like. A number of longitudinal grooves provide fracture-initiating regions which provide relatively high compressive and t
An upright standard assembly comprising the combination of a generally vertical standard, a base member, a connection member, and means affixed to one of said base member or said standard for receiving said connection member to releasably attach said standard to said base member, and having a genera
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