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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0390245 (1982-06-21) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 11 인용 특허 : 0 |
A tamper-proof screw assembly is made up of three basic parts, two of which are coupled together. First, there is provided a screw having a flat head with a center tapped opening and an annular array of teeth formed in its surface surrounding the tapped opening. A second member constitutes a torquin
A tamper proof screw assembly, including in combination: (a) a screw having a flat head defining first and second engaging means; (b) a torquing member having a flat bottom defining a third engaging means positioned to cooperate with said second engaging means when positioned over said head, said se
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