[특허]Fluid pressure control and relief apparatus

[미국특허] Fluid pressure control and relief apparatus 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16K-031/12
출원번호	US-0651029 (1996-05-21)
발명자 / 주소	Sidwell Herbert R.
대리인 / 주소	Rhea
인용정보	피인용 횟수 : 24 인용 특허 : 0

초록 ▼

Fluid pressure above a predetermined limit in a fluid pressure system is reduced by operating a relief valve, having its inlet port connected with the system, in a throttling action. A normally seated valve member is maintained in relief valve closed position by pneumatic pressure on a piston in a chamber of the relief valve. A fluid pressure sensor communicating with the inlet port generates a signal in response to fluid pressure above a predetermined limit received by a sensor signal processor energized by a source of electrical energy which releases pneumatic pressure in the chamber for a predetermined time interval allowing system fluid pressure to unseat the valve member and exhaust fluid pressure through the relief valve outlet port.

대표청구항 ▼

[ I claim:] [1.] In a high pressure fluid system having a normally closed valve having a body and a valve seat in a fluid passageway between inlet and outlet ports and having a valve member seated on the valve seat, said inlet port being connected with the system fluid pressure being monitored, the improvement comprising:a cylinder connected with said valve body for forming a chamber axially opposite the inlet port;drive means in the chamber normally maintaining the valve member seated on the valve seat;pressure control means including a first solenoid valve means connected with and pressurizing the chamber opposite the valve seat for normally biasing the drive means toward the valve seat;fluid pressure sensing means connected with and responsive to fluid pressure in the inlet port for generating a sensor signal in response to fluid pressure above a predetermined value; and,sensor signal processing and timing means connected with a source of electrical energy and said first valve for shifting the latter and exhausting fluid from the chamber opposite the inlet port for a predetermined time interval,whereby fluid reducing pressure in the chamber allows inlet port fluid pressure to unseat the valve member.

이 특허를 인용한 특허 (24) 인용/피인용 타임라인 분석

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Fluid pressure control and relief apparatus 원문보기