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1. (WO2005106416) DIFFERENTIAL PRESSURE TRANSDUCER WITH FABRY-PEROT FIBER OPTIC DISPLACEMENT SENSOR
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2005/106416    International Application No.:    PCT/US2005/012667
Publication Date: 10.11.2005 International Filing Date: 15.04.2005
IPC:
G01L 1/02 (2006.01)
Applicants: DAVIDSON INSTRUMENTS INC. [US/US]; 4800 Research Forest Drive, The Woodlands, TX 77381 (US) (For All Designated States Except US)
Inventors: LOPUSHANSKY, Richard, L.; (US).
BERTHOLD, John, W.; (US)
Agent: BARAONA, Robert, C.; McDonald Hopkins Co., LPA, 600 Superior Avenue E., Suite 2100, Cleveland, OH 44114 (US)
Priority Data:
60/562,454 15.04.2004 US
11/105,670 14.04.2005 US
Title (EN) DIFFERENTIAL PRESSURE TRANSDUCER WITH FABRY-PEROT FIBER OPTIC DISPLACEMENT SENSOR
(FR) TRANSDUCTEUR A PRESSION DIFFERENTIELLE EQUIPE D'UN CAPTEUR DE DEPLACEMENT A FIBRE OPTIQUE FABRY-PEROT
Abstract: front page image
(EN)A differential pressure transducer which incorporates a Fabry-Perot sensor for direct quantitative measurements of the distance displaced by a piston abutting two pressure boundaries is described. The apparatus includes a piston with an annular protrusion which is fitted into a transducer housing having a peripheral groove that serves as a stop to prevent damage to the sensor in overpressure situations. A method of measuring differential pressure using a Fabry-Perot sensor is also contemplated.
(FR)L'invention concerne un transducteur à pression différentielle équipé d'un capteur Fabry-Pérot qui permet de réaliser des mesures quantitatives directes de la distance de déplacement d'un piston jouxtant deux enveloppes de pression. Ce dispositif comprend un piston muni qu'une saillie annulaire qui s'adapte dans un logement de transducteur sur lequel une rainure périphérique sert de butée pour empêcher la détérioration du capteur en cas de surpression. Par ailleurs, l'invention concerne un procédé de mesure de la pression différentielle au moyen d'un capteur Fabry-Pérot.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)