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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0390045 (1982-06-18) |
우선권정보 | NL-0003011 (1981-06-22) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 8 인용 특허 : 2 |
Method and apparatus of making socketed pipe-fittings of synthetic plastics material by injection moulding. Prior to starting the injection moulding process a sealing ring is held in somewhat pinched condition with reduced outer diameter at the level of means to be formed on the socket for receiving
A method of making a pipe fitting of synthetic plastics material by injecting moulding, said pipe fitting comprising a socket including means for receiving a sealing ring, characterized by, prior to the injection moulding process, placing a sealing ring in slightly pinched condition with reduced out
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