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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0887055 (1986-07-18) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 4 인용 특허 : 2 |
A delay valve is attached to a fire hydrant and interposed between the hydrant and the hose and restricts the otherwise high flow and high pressure of the hydrant to a small fraction of the normal flow and pressure until the hose is filled up, at which point the valve opens fully so that the hose an
A delay valve for connection between a fire hydrant and a fire hose comprising: (a) a housing defining an internal pressure chamber having an inlet for attachment to a fire hydrant and an outlet for attachment to a fire hose; (b) a gate which slides within said housing from a closed position substan
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