최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0578797 (1990-09-07) |
우선권정보 | TW-79208044 (1990-07-23) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 17 인용 특허 : 1 |
In a lockable folding joint of a ladder having two arms with their flat heads pivoted to one another, a detent block used to engage one of spaced notches of one of the flat heads is held resiliently and firmly by an improved mechanism. The mechanism includes a one-piece curved rod spring which has t
A folding joint for a foldaway ladder comprising: a substantially flat first hollow arm having a first head which is forked and two opposite slide apertures adjacent to said forked first head, a substantially flat second hollow arm having a second head which is provided between and pivoted to said f
※ AI-Helper는 부적절한 답변을 할 수 있습니다.