Patents
Sitemap › G01 - Measuring; Testing › G01L - Measuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure › G01L 9 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
Patents for G01L 9 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means (16,396)
07/1981
07/14/1981US4277973 Vibratory wire strain gage
07/07/1981US4277814 Semiconductor variable capacitance pressure transducer assembly
07/07/1981US4276776 Temperature/pressure transducer
06/1981
06/30/1981US4276533 Pressure sensor
06/30/1981CA1103951A1 Pressure gauge based on use of an aneroid capsule
06/24/1981EP0030741A2 Vibrating beam force transducer
06/23/1981US4275406 Monolithic semiconductor pressure sensor, and method of its manufacture
06/23/1981US4274423 Catheter tip pressure transducer
06/16/1981US4274125 Temperature compensated capacitance pressure transducer
06/11/1981WO1981001613A1 Piezoelectric transducer for fuel injection engine
06/09/1981US4272331 Oscillatory mode oxygen sensor and method
06/09/1981US4272330 Transient mode oxygen sensor and method
06/09/1981US4272329 Steady state mode oxygen sensor and method
06/09/1981CA1102928A1 Simultaneously resonated multi-mode crystal force transducer
06/03/1981EP0029772A1 Method of manufacturing a piezoresistive gauge
05/1981
05/26/1981US4269069 Pressure sensor, especially for intake air suction pressure
05/19/1981US4267819 Device for generating an electric output signal in response to the positioning of a mechanical member
05/12/1981US4266517 Differential pressure switch device responsive to differential pressure and temperature change
05/12/1981US4266430 Precision pressure-responsive fluid gauge
05/12/1981US4266421 Vibration sensors for internal combustion engines
05/05/1981US4265252 Intracranial pressure implant
05/05/1981US4265124 Remote acoustic wave sensors
05/05/1981CA1100584A1 Variable differential transformer apparatus
05/05/1981CA1100327A1 Ambient pressure sensor
04/1981
04/28/1981US4264889 Pressure transducer
04/28/1981US4263808 Noninvasive pressure monitor
04/22/1981EP0027402A2 Device for measuring the flow of a fluid and system for sensing the flow of air in an internal-combustion engine making use of such a device
04/21/1981US4262540 Pressure measuring device
04/21/1981US4262532 Pressure and temperature sensor
04/14/1981US4261209 Fluid pressure sensing apparatus
04/14/1981US4261207 Fluid pressure-sensing device
04/14/1981US4261086 Method for manufacturing variable capacitance pressure transducers
04/14/1981CA1099388A1 Cylindrical capacitive quartz transducer
04/08/1981EP0026698A1 Pressure transducer
04/07/1981US4260883 Optical measurement system
03/1981
03/31/1981US4258565 Force detector
03/25/1981EP0025566A2 Optical device for measuring small pressure differences by means of light intensity changes
03/25/1981EP0025565A2 Optical device for measuring pressure differences by means of light intensity changes
03/25/1981EP0025564A2 Optical device for measuring small pressure differences by means of light intensity changes
03/24/1981US4257274 For automobiles; silicon, borosilicate glass
03/24/1981US4257260 Pressure sensing apparatus and engine analyzing apparatus
03/18/1981EP0025336A2 Variable capacitance pressure transducer assembly
03/18/1981EP0025077A1 A two-wire remote measuring system
03/17/1981US4257112 Electronic time-piece with barometric indicator
03/17/1981US4255973 Digital pressure transducer for use at high temperatures
03/11/1981EP0024946A2 Method of manufacturing variable capacitance transducers
03/11/1981EP0024945A2 Variable capacitance pressure transducer
03/03/1981US4254395 Electromechanical force converter for measuring gas pressure
03/03/1981US4253827 Registration fixture for sensor
03/03/1981US4253325 Calibration of torque measuring transducers
02/1981
02/24/1981CA1096195A1 Digital differential pressure measurement apparatus
02/17/1981US4250894 Instrument for viscoelastic measurement
02/17/1981US4250759 Digital readout gauge
02/11/1981EP0023732A1 Capacitive gauge
02/10/1981US4250452 Pressure sensitive transducer circuits
02/05/1981WO1981000275A1 Improvements in sensitive door edges
02/04/1981EP0023450A1 Surface elastic wave transducer using two matchable oscillators connected to a frequency mixer, comprising means to calibrate the output signal frequency, and method of calibrating this frequency
02/03/1981US4249076 Optical measuring device using optical fibers
02/03/1981CA1094847A1 Digital readout gauge
01/1981
01/27/1981US4246908 Intracranial pressure transducer
01/20/1981US4245497 Monitoring and remote-indicator apparatus for vacuum-generating internal combustion engines
01/20/1981CA1094229A1 Electrostatically deformable thin silicon membranes
01/20/1981CA1094192A1 Sensors for sensing a plurality of parameters
01/14/1981EP0022280A1 Process for the chemical etching of silicon substrates
01/13/1981US4244229 Differential pressure transducer
01/13/1981CA1093640A1 Apparatus and method for using fuel pressure to trigger an injection timing device
01/06/1981US4242914 Pressure transducer
12/1980
12/23/1980US4241325 Displacement sensing transducer
12/23/1980US4240444 Apparatus for sensing coughs
12/16/1980US4238964 Vacuum gauge
12/10/1980EP0020194A1 Pressure sensing structure using a capacitance pressure capsule
12/09/1980US4238844 Displaced position detecting device
12/09/1980US4237900 Implantable calibration means and calibration method for an implantable body transducer
12/09/1980CA1091059A1 Apparatus for measuring barometric pressure
12/02/1980CA1090898A1 Optical position sensor
12/02/1980CA1090606A1 Vibrating diaphragm fluid pressure sensor device
11/1980
11/26/1980EP0019511A1 Process for compensating temperature variations in surface-wave devices and pressure sensor for carrying out this process
11/25/1980US4236137 Semiconductor transducers employing flexure frames
11/25/1980CA1090164A1 Solid state barometric altimeter-encoder
11/18/1980US4233848 Strain gauge pressure transducer apparatus having an improved impedance bridge
11/12/1980EP0018418A1 Pressure transducer
11/11/1980US4233597 Device indicating a state due to the pressure modification
11/11/1980US4232698 Pressure relief valve with pressure indicating means
11/11/1980US4232544 Transducer for sensing a parameter of a fluid
11/04/1980US4231376 Pressure sensor
10/1980
10/29/1980EP0018285A1 Fixture for holding a dual diaphragm pression capsule
10/29/1980EP0018284A1 Method of vacuum sealing a capacitive pressure capsule
10/29/1980EP0018283A1 Pressure sensor
10/29/1980EP0018248A1 Surface acoustic wave pressure sensor, its use in the ignition system of an internal-combustion engine and in a flowmeter
10/28/1980US4229979 Transducer and method of making the same
10/28/1980CA1088664A1 Fabrication of semiconductor devices utilizing ion implantation
10/21/1980US4229776 Capacitive capsule for aneroid pressure gauge
10/15/1980EP0017453A1 Washing appliance and liquid level sensing means therefor
10/15/1980EP0017255A2 Signal processing apparatus for obtaining control parameters in electronic engine control system
10/15/1980EP0017200A1 Divided cuff for pressure measurement
10/14/1980US4227419 Capacitive pressure transducer
10/14/1980US4227418 Capacitive pressure transducer
10/07/1980US4226126 Mechanical displacement-electrical signal transducer
10/07/1980US4226125 Digital pressure sensor system with temperature compensation
09/1980
09/30/1980US4225632 Rotating mask before depositing second layer of material
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