[특허]Differential pressure transducer

[미국특허] Differential pressure transducer 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01L-010/10
출원번호	US-0750769 (1985-07-01)
발명자 / 주소	Bell Robert L. (Agoura Hills CA)
출원인 / 주소	Bell Microsensors, Inc. (Newbury Park CA 02)
인용정보	피인용 횟수 : 53 인용 특허 : 7

초록 ▼

In a differential pressure transducer having isolation diaphragms on opposite sides of a sensing diaphragm, the isolation diaphragms are made highly compliant, are radially prestressed and are bowed outwardly relative to closely spaced backup surfaces by oil pressure. Using very small interior cavities and a substantially stiffer sensing diaphragm differential process pressures induce linear deflection of the sensing diaphragm.

대표청구항 ▼

A differential pressure transducer comprising: a pair of spaced apart ceramic reference plates having substantially parallel and opposing surfaces containing planar electrode means, the reference plates also including parallel planar outer surfaces and conduits extending therethrough between the electrode bearing surfaces and the outer surfaces; a ceramic diaphragm having electrode means on the opposite sides thereof and disposed symmetrically between the opposed surfaces of the reference plates, the diaphragm being substantially coextensive with and joined to the reference plates about their peripheries, the spacings between the reference plates and the diaphragm being of the order of 0.003″or less; a pair of relatively flat isolation diaphragms, each mounted adjacent the outer surface of a different reference plate and spaced apart therefrom to define a volume in communication with the conduit therein, the spacing between each diaphragm and reference plate outer surface being of the order of 0.003″or less; and means providing an oil fill in the interior volume of the reference plate including the gaps between the plate, the ceramic diaphragm and the isolation diaphragm, wherein pressure variations acting on the isolation diaphragms are transmitted to the ceramic diaphragm.

이 특허에 인용된 특허 (7) 인용/피인용 타임라인 분석

Kuwayama Hideki (Tokyo JPX), Differential pressure gauge.
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Bell Robert L. (Chatsworth CA) Lathlaen Richard A. (Thousand Oaks CA), High accuracy differential pressure capacitive transducer.
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Knecht Thomas A. (12309 Woodbine Rd. Minnetonka MN 55343) Frick Roger L. (125 Choctaw Cir. Chauhassen MN 55317) Schulte John P. (923-11th Ave. South ; Apartment 1 Hopkins MN 55343), Pressure sensing cell using brittle diaphragm.
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Yasuhara Takeshi (Kawasaki JPX) Tamai Mitsuru (Kawasaki JPX) Yuhara Tadanori (Kawasaki JPX) Asano Isamu (Kawasaki JPX), Pressure sensing device.
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Kooiman Robert R. (Eden Prairie MN), Pressure sensor with a substantially flat overpressure stop for the measuring diaphragm.
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Eckstein ; Paul ; Jantsch ; Ottomar ; Reimann ; Bernd, Pressure transducer.
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Shimada Satoshi (Hitachi JPX) Yamada Kazuji (Hitachi JPX) Suzuki Seikou (Hitachiota JPX) Kobori Shigeyuki (Hitachi JPX) Nishihara Motohisa (Katsuta JPX), Semiconductor pressure transducer.
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이 특허를 인용한 특허 (53) 인용/피인용 타임라인 분석

Mondragon, Christopher K.; Greig, Nigel; Scholten, Edward; Moody, Roy; Simmonds, Paul; Clarke, Elaine; Darbonne, Thomas Allen, Airline passenger seat modular user interface device.
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Donaldson, Mark; Steyn, Andre; Guiu, Pierre Victor Manuel; Givernet, Damien Oliver; Sim, William James, Component for noise reducing earphone.
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Lischer,D. Jeffrey; Traverso,Robert, Contaminant deposition control baffle for a capacitive pressure transducer.
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Wilson, Ronald Wayne, Cylinder pressure transducer and related method.
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Brown, Gregory C., Differential pressure sensor full overpressure protection device.
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Schulte, John P.; Tyson, David G.; Klosinski, Andrew J., Differential pressure sensor with line pressure measurement.
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Broden, David A.; Hedtke, Robert C.; Klosinski, Andrew J.; Sittler, Fred C., Differential pressure transmitter with complimentary dual absolute pressure sensors.
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Hedtke, Robert C., Differential pressure transmitter with pressure sensor.
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Kurosawa, Ryou; Aizawa, Mamoru, Differential pressure/pressure transmitter.
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Orth, Kelly M., Field device with dynamically adjustable power consumption radio frequency communication.
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Vanderaa, Joel D.; Grunig, Christina A.; Hurd, Ronald F.; Westfield, Brian L.; McGuire, Chad M.; Paullus, Steven B., Form factor and electromagnetic interference protection for process device wireless adapters.
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Agami,Mark, High-temperature reduced size manometer.
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Darlington, Paul; Azmi, Yacine; Lefebvre, Mickael Bernard Andre; Hewitt, Oliver Michael James, In-ear device incorporating active noise reduction.
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Harasyn,Donald E.; Willcox,Charles R., Line pressure measurement using differential pressure sensor.
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Kopp, Thomas, Measuring arrangement with a ceramic measuring cell.
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Grudzien, Chris P., Method and apparatus for forming a reference pressure within a chamber of a capacitance sensor.
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Grudzien,Chris P., Method and apparatus for forming a reference pressure within a chamber of a capacitance sensor.
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Willcox, Charles R., Method and apparatus for pressure measurement using magnetic property.
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Hedtke, Robert C.; Lu, Liangju, Method and apparatus for pressure measurement using quartz crystal.
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Jonsson,Steffan, Method for producing a pressure sensor for detecting small pressure differences and low pressures.
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Grudzien,Chris P., Method of forming a seal between a housing and a diaphragm of a capacitance sensor.
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Grudzien,Chris P., Method of forming a seal between a housing and a diaphragm of a capacitance sensor.
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Donaldson, Mark; Givernet, Damien Oliver, Noise cancellation earphone.
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Brown, Gregory C.; Klosinski, Andrew J.; Trimble, Steven R.; Fandrey, Mark, Power generation for process devices.
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Arunachalam, Jawahar; Kasturi, Udayashankar Bangalore, Power supply for industrial process field device.
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Tsuruoka Michihiko,JPX ; Kudo Takahiro,JPX ; Takahashi Masato,JPX ; Kato Nobuhisa,JPX ; Nakamura Kimihiro,JPX ; Tsukamoto Shuji,JPX, Pressure detecting apparatus for measuring pressure based on detected capacitance.
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Tham, Anh Tuan; Passler, Frank; Teipen, Rafael, Pressure resistently encapsulated, pressure difference sensor.
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Brown, Gregory C., Pressure sensor die over pressure protection for high over pressure to operating span ratios.
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Harasyn,Donald E.; Willcox,Charles R.; Klosinski,Andrew J., Pressure sensor fault detection.
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Jonsson,Steffan, Pressure sensor for detecting small pressure differences and low pressures.
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Yajima Yasuhito (Nagoya JPX) Watanabe Yasushi (Nagoya JPX), Pressure sensor having sealing member for sealing housing interior with respect to external space.
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Schumacher,Mark; Klosinski,Andrew, Pressure sensor with deflectable diaphragm.
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Hedtke,Robert C., Pressure transmitter with acoustic pressure sensor.
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Klosinski,Andrew J.; Schulte,John P., Process control transmitter with vibration sensor.
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Karschnia,Robert J.; Willcox,Charles R.; Broden,David A.; Westfield,Brian L.; Orth,Kelly M., Process field device with radio frequency communication.
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Frick Roger L. ; Rud Jr. Stanley E. ; Broden David A., Process pressure measurement devices with improved error compensation.
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Frick, Roger L., Process sensor module having a single ungrounded input/output conductor.
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Hedtke, Robert C., Process transmitter with wireless communication link.
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Sittler, Fred C.; Hedtke, Robert C., Process variable transmitter with acceleration sensor.
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Kielb, John A.; Karschnia, Robert J.; Westfield, Brian L.; Orth, Kelly M.; Broden, David A., RF adapter for field device.
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Kielb, John A.; Westfield, Brian L., RF adapter for field device with loop current bypass.
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Kielb, John A.; Westfield, Brian L.; Orth, Kelly M., RF adapter for field device with low voltage intrinsic safety clamping.
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Kielb, John A., RF adapter for field device with variable voltage drop.
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Fuller, Graeme Colin, Realisation of controller transfer function for active noise cancellation.
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Klosinski, Andrew J.; Willcox, Charles R., Resonant frequency based pressure sensor.
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Wang, Rongtai, Sigma-delta analog to digital converter for capacitive pressure sensor and process transmitter.
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Grudzien,Chris P., Turbo sump for use with capacitive pressure sensor.
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Sim, William James; Greig, Nigel; Beck, Robert David; Nicklin, Mark, Vehicle media distribution system using optical transmitters.
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Vanderaa, Joel David, Wire harness for field devices used in a hazardous locations.
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Vanderaa, Joel D.; Grunig, Christina A.; Hurd, Ronald F., Wireless communication adapter for field devices.
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Korolev, Eugene, Wireless interface within transmitter.
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Strei, David Matthew; Vanderaa, Joel David, Wireless process communication adapter with improved encapsulation.
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Nelson, Richard L.; Ostby, Philip G.; Brown, Gregory C., Wireless process field device diagnostics.
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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] Differential pressure transducer 원문보기