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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0305780 (1981-09-25) |
우선권정보 | JP-0134806 (1980-09-26) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 5 인용 특허 : 1 |
A cylinder lock is provided with means for preventing a cylinder from being extracted to improve safety against breakage of the lock. The preventing means comprises a deformable portion formed at an entrance of a keyhole of the cylinder and deformable into a radially expanded form when a force is ap
A cylinder lock, comprising: an outer member having a bore, an inner cylinder means including an inner cylinder rotatably received in said bore, said inner cylinder having a keyhole and being rotatable within said outer member only when a correct key is inserted into said keyhole, and actuating mean
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