Patents
Patents for G01L 11 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group or (2,548)
02/1995
02/22/1995EP0639755A2 Capacitive transducer feedback controlled by means of electrostatic force and method for controlling the profile of the tranducing element in the transducer
02/22/1995EP0639260A1 Optical displacement sensor
02/15/1995EP0638163A1 Remotely deployable pressure sensor.
02/01/1995CN1098196A Dynameter
01/1995
01/31/1995US5385053 Fiber optic pressure sensor systems
01/18/1995EP0478780B1 Method and device for determining field of pressure of continuous fluid medium on the surface of an object
11/1994
11/02/1994EP0622622A2 Physical quantity detecting apparatus and internal combustion engine control apparatus each utilizing optical fiber
11/01/1994US5359887 Coating for wind tunnel luminescent barometry of surfaces containing resin, solvent vehicle, photoluminescent material
10/1994
10/25/1994US5357805 Pressure measurement apparatus for inspecting therapeutic energy waves
10/04/1994US5351527 Method and apparatus for testing fluid pressure in a sealed vessel
09/1994
09/28/1994EP0617265A2 A force measuring instrument
09/20/1994US5348019 Optical fiber pressure sensing catheter
09/15/1994DE4307758A1 Method and device for pressure measurement and/or detection of air bubbles in flowing media
08/1994
08/30/1994US5341676 Surface pressure measurement by oxygen quenching of luminescence
08/02/1994US5334304 Electrochemical force sensor
07/1994
07/21/1994WO1994016346A1 Fibre-optic measuring converter of pressure, pressure difference and flow, and a process for manufacturing the sensing element of the same
06/1994
06/29/1994EP0598720A4 Nonintrusive flow sensing system.
06/28/1994US5324956 System for characterizing movement and temperature of fluids
06/08/1994EP0600491A2 Method and apparatus for testing fluid pressure in a sealed vessel
06/07/1994US5317948 Pressure transducer using permanent magnet and opposing variable magnetic field
06/01/1994EP0598720A1 Nonintrusive flow sensing system.
05/1994
05/31/1994US5315876 Purge gas pressure monitoring system
05/25/1994EP0598343A2 Force sensor, temperature sensor and temperature/force sensor device
05/17/1994US5313538 Method of making an index grating in an optical fiber, and a quasi-distributed array of sensors formed in said fiber
05/03/1994US5307675 Luminescent pressure sensitive composition
04/1994
04/27/1994EP0593676A1 Method and apparatus for measurement of forces and pressures using tensioned bellows
04/19/1994US5303586 Pressure or fluid level sensor
04/13/1994EP0354229B1 Hydrophonic probe
04/12/1994US5303167 Absolute pressure sensor and method
04/12/1994US5301554 Differential pressure transducer
03/1994
03/17/1994DE4230374A1 IC engine cylinder head seal with knock or misfire detector - senses change in polarisation of light due to variation of pressure on birefringent optical waveguide around or across opening into combustion chamber
03/16/1994EP0587054A2 Device for measuring pressure
03/08/1994US5293046 Optical high pressure sensor
03/03/1994WO1994004898A1 Ultra-sound testing device for gas pressure accumulators
03/01/1994US5289720 Optic sensor for determining environmental conditions
02/1994
02/24/1994DE4227657A1 Ultraschall-Prüfeinrichtung für Gasdruckspeicher Ultrasonic testing device for gas storage
02/23/1994CN2157511Y Fibre-optic pressure sensing probe
02/03/1994WO1994002816A1 Optic sensor for determining environmental conditions
01/1994
01/19/1994EP0579504A2 Electromagnetic pressure transducer
01/19/1994EP0296189B1 Process for ultrasonic pressure measurement in a liquid using micro-bubbles
01/18/1994US5279161 Purge gas pressure monitoring system with temperature compensation
01/13/1994DE4233154C1 Water pipe leakage rate measuring method - using pressure characteristic for test vol. divided from interior of pipe by flexible foil
01/11/1994US5277067 Miniature pressure sensor and pressure sensor arrays
01/06/1994WO1994000051A1 Blood pressure transducer
01/04/1994US5275053 Fiber optic pressure sensor systems
12/1993
12/22/1993CN1079822A Optical force transducer based on a fabry-perot resonator, with a sveeping fabry-perot resonator as an element of the transducing part
12/08/1993EP0572375A1 Extended measurement capability transmitter having shared overpressure protection means.
12/08/1993CN1079297A Ultrasonic method and instrument for measuring pressure from outside of pipe
11/1993
11/24/1993EP0571107A1 Optical force transducer based on a Fabry-Perot resonator, with a sweeping Fabry-Perot resonator as an element of the transducing part
11/16/1993US5261278 Microwave acceleration transducer
11/15/1993CA2095980A1 Purge gas pressure monitoring system
11/11/1993WO1993022645A1 Remotely deployable pressure sensor
11/11/1993WO1993022643A1 Method and apparatus for measurement of forces and pressures using tensioned bellows
11/11/1993WO1993022624A1 Optical displacement sensor
11/02/1993US5258614 Optical fiber loop temperature sensor
10/1993
10/15/1993CA2093953A1 Purge gas pressure monitoring system with temperature compensation
10/13/1993EP0565462A1 Improvements to pendular micro-sensors having force-feed-back
10/06/1993EP0564034A2 Process and apparatus for the absolute and independent measurement of mechanical and thermal magnitudes that act simultaneously on an optical fibre
09/1993
09/14/1993CA1322109C Birefringent optical fiber device for measuring of ambient pressure in a stabilized temperature environment
09/08/1993EP0558771A1 Luminescent pressure sensitive composition
09/03/1993CA2064621A1 Luminescent pressure sensitive composition
09/02/1993WO1993017314A1 Optical fibre pressure sensor
06/1993
06/15/1993US5220160 Adaptive fiber optic shock wave sensor
06/08/1993US5218418 Differential fiber optic sensor and method
06/08/1993US5217015 Pressure sensing device having transducer overlying and deforming eye
04/1993
04/29/1993WO1993008478A1 Microwave vector displacement and acceleration transducer
03/1993
03/23/1993US5196694 Temperature compensated self-referenced fiber optic microbend pressure transducer
03/23/1993US5195520 Ultrasonic manometry process in a fluid by means of microbubbles
03/16/1993US5194847 Apparatus and method for fiber optic intrusion sensing
03/05/1993CA2050609A1 Fiber-optic strain gauge manometer
02/1993
02/24/1993EP0528657A2 Improved fiber optic pressure sensor systems
02/23/1993US5187983 Fiber-optic strain gauge manometer
02/22/1993CA2068033A1 Fiberoptic pressure sensor systems
02/16/1993US5187674 For determining fuel gas pressure
02/16/1993US5186046 Surface pressure measurement by oxygen quenching of luminescence
02/15/1993WO1993004343A1 Nonintrusive flow sensing system
02/15/1993CA2104125A1 Non-intrusive flow sensing system
01/1993
01/12/1993US5178153 Fluid flow sensing apparatus for in vivo and industrial applications employing novel differential optical fiber pressure sensors
11/1992
11/17/1992US5163328 Miniature pressure sensor and pressure sensor arrays
11/10/1992CA1309877C Optical sensor
10/1992
10/22/1992DE4139025C1 Fibre=optic pressure sensor for lithotripsy - has bend in fibre=optic waveguide with material removed to form surface exposed to fluid for measurement of refractive index
10/21/1992EP0509800A2 A pressure measurement apparatus for inspecting therapeutic energy waves
10/20/1992CA1308937C Fabrication technique for low-loss fused taper directional couplers and pressure sensor produced thereby
09/1992
09/16/1992EP0503812A2 Catheter tip fluorescense-quenching fiber optic pressure sensor
08/1992
08/25/1992US5142155 Catheter tip fluorescence-quenching fiber optic pressure sensor
08/20/1992DE4104477A1 Pressure dependent measurement value generator e.g. for washing machine water level - has displacement sensor and controlled counter pressure generator coupled to membrane
08/11/1992US5138155 Pressure gauge with fiber optic sensor
07/1992
07/07/1992US5128537 Device for optically measuring a pressure differential
07/07/1992US5128535 Method for measurement of pressure applied to a sensing element comprising a cholesteric liquid crystal
06/1992
06/25/1992WO1992010730A1 Method and sensor for measuring low air pressures
06/17/1992EP0489899A1 Optical fibre parameter measuring device
06/09/1992US5119679 Optically powered and linked pressure transducer
05/1992
05/26/1992US5115675 Tensioned bellows pressure transducer
05/26/1992US5115668 Non-invasive pressure measuring device and method
05/14/1992DE4035373A1 Interferometric optical path difference measurement - using optical fibre fabry-perot resonator as pressure sensors
05/05/1992US5111055 Method and system for the optical measurement of the air pressure by laser excitation, particularly in front of an aircraft
05/05/1992US5109852 Method for sensing pressure in an object
04/1992
04/28/1992CA1299728C Pressure sensor
04/15/1992CN2101862U Pressure gauge
04/14/1992US5103682 Ultra-sensitive force detector employing servo-stabilized tunneling junction
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