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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0033049 (1979-04-25) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 10 인용 특허 : 3 |
An improved check valve of rigid plastic tubing of inexpensive fabrication. The check valve is made of plastic tubing into which a chord-like slot is cut in one embodiment and into which is dropped in the process of manufacture a valve support arm to which is connected a swinging valve member of a p
A tubular check valve comprising a tubular housing, a pivotable valve member, a shaft supporting said valve member for pivotable movement from an open position to a closed position against a valve seat formed of an inwardly extending circular wall member on said housing, said shaft being supported a
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