[특허]Ultra-high pressure transducer

Ultra-high pressure transducer 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01L-007/08 G01L-009/12
출원번호	US-0057541 (1993-05-06)
발명자 / 주소	Park Kyong M. (Thousand Oaks CA) Tirmizi Abrar A. (Simi Valley CA)
출원인 / 주소	Kavlico Corporation (Moorpark CA 02)
인용정보	피인용 횟수 : 43 인용 특허 : 0

초록 ▼

A simple, reliable and inexpensive ultra high pressure transducer includes a basic capacitive transducer, made of two closely spaced insulating plates whose opposed faces contain conductive layers, and one of which plates is a thin and flexible diaphragm of low mechanical hysteresis. In mechanical coupling proximity with this insulating diaphragm is a thick metal diaphragm which is a part of the ultra high pressure coupling component. The flexure of this thick metal diaphragm under ultra high pressures, which are applied only on the side opposite the insulating diaphragm, determines the magnitude of the deflection of both diaphragms, and, corresponding to the resultant output capacitance level, provides a measure of the ultra high pressure level.

대표청구항 ▼

A simple and reliable ultra high pressure transducer comprising: a capacitive pressure transducer made of two closely spaced insulating plates of low mechanical hysteresis material, said plates each having a layer of conductive material on their opposed faces forming electrodes which are spaced slightly from one-another, and at least one of said plates being a thin diaphragm which is flexible under applied deflection forces to deflect toward the other plate and change the capacitance between said electrodes, said thin diaphragm being mounted to and spaced apart from the other insulating plate at the facing surfaces of the outer peripheries thereof; an ultra high pressure fitting including an ultra high pressure input coupling part for handling pressures in excess of 20,000 psi and for connecting to a source of ultra high pressure fluid, and a thick, flat flexible metal diaphragm integral with said fitting and bonded to said thin diaphragm over the greater portion of the active areas of said thin and thick diaphragms; said thick metal diaphragm constituting means for determining the magnitude of the deflection of said bonded thin and thick diaphragms as pressure to said ultra high pressure input coupling part is varied; and an ultra high pressure chamber adjacent to and having an extent comparable to that of said thick metal diaphragm, said chamber being connected to said input coupling part; whereby, when the ultra high pressure applied to said input coupling part changes the corresponding pressure change in said chamber causes the deflection of said bonded thick and thin diaphragms to change correspondingly, and the resultant changed output capacitance of the transducer indicates the new ultra high pressure level.

이 특허를 인용한 특허 (43)

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Willcox, Charles R., Pressure sensor.
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Wade, Richard A.; Jones, Ryan; Eckhardt, Todd; Machir, James A.; Bentley, Ian, Pressure sensor assembly.
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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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이 특허를 인용한 특허 (43)

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