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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
|
출원번호 | US-0025180 (1993-03-02) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 17 인용 특허 : 0 |
A flat lock set has a flat lock having a cylinder, a tumbler, several rings and springs and a key having several stepped blades each having several shoulders. The cylinder is mounted in a door and has four groups of ribs formed therein. Each group includes several separate ribs defining several pass
A flat lock set comprising a flat lock comprising: a cylinder comprising a first opening and a second opening and an inner surface formed with a number of groups of ribs, each group including a number of separate ribs defining a number of passages extending perpendicular to a length of the cylinder;
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