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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0287253 (1981-07-27) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 15 인용 특허 : 1 |
A pressure responsive pipe joint seal for sealing connecting pipe joint members includes sealing flanges which define upwardly, outwardly and downwardly curved upper surfaces so that there is less tendency for them to get caught on a pipe joint member as adjacent members are slid into coupling relat
A self-lubricating pipe joint seal fitting between and sealing connecting pipe joint members which are slid into each other to form a pipe joint comprising: a reservoir means in said seal for containing a lubricant; and means for releasing said lubricant from said reservoir means as said pipe joint
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