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Match Document Document Title
8156817 Pressure detection device  
Provided is a pressure detection device capable of easy installation and removal of a sensor in/from a diaphragm, measurement of a pressure in a wide rage, and manufacture at a low cost while...
7992444 Pressure detection device and pressure detection method  
The pressure detection device includes a buffer member deformable by a pressure change, including one or more magnets, and a sensor assembly including one or more magnetic sensors to detect a...
7677108 Accurate pressure sensor  
The invention relates to a pressure sensor capable of measuring pressure accurately, and more particularly, to a pressure sensor comprising a box-shaped magnet, optionally having an inclined upper...
7444878 Resonant frequency pressure sensor  
A pressure sensor (S) includes an antenna member (10) that is adapted to be resonantly responsive to a desired frequency of electromagnetic radiation (12). An inductance changing body formed from a...
7395717 Flexible capacitive sensor  
The invention relates to a flexible, resilient capacitive sensor suitable for large-scale manufacturing. The sensor comprises a dielectric, an electrically conductive layer on the first side of the...
7343809 Method and device for determining the pressure in pipes  
In a method for determining the absolute pressure in pipes through which there is a fluid flow, in particular injection lines in diesel-operated internal combustion engine, a first signal from a...
7261005 Magneto-elastic resonator torque sensor  
A magneto-elastic torque sensor and system include a substrate and a magneto-elastic sensing component formed from or on the substrate. The magneto-elastic sensing component and the substrate...
7219552 Scalable high sensitivity magnetostrictive pressure sensor  
A pressure sensor 10 includes a casing 12 configured to be able to be filled with a fluid 16 such as a liquid or a gas, in which at least part of a surface contacting this fluid 16 is formed of a...
7180285 Electrodynamic position transducer with electronic memory means  
The transducer (1) comprises: a rigid casing (2–4) in which a membrane (5) is clamped which, together with a portion of the casing (2–4), defines at least one chamber (6, 7) of variable volume; at ...
7074191 Method and device for non-intrusive measurement of blood pressure in a circuit of a dialysis machine  
A method for the non-intrusive measurement of blood pressure in a circuit of a dialysis machine, using a device provided with a sleeve forming a portion of the blood circuit and having at least one...
7059194 Pressure fault device  
The invention involves a pressure fault device for indicating a threshold pressure or a threshold differential pressure. The present invention provides a cost effective way to determine where a...
6854335 Magnetically coupled tire pressure sensing system  
A tire pressure reporting and warning system employs low-cost passive magnetically coupled pressure senders within the tires. These senders employ permanent magnets that rotate in response to...
6782753 Thermodynamic pressure/temperature transducer health check  
A device and procedure for checking the health of a pressure transducer in situ is provided. The procedure includes measuring a fixed change in pressure above ambient pressure and a fixed change in...
6694822 Use of multi-layer thin films as stress sensor  
The present invention provides a pressure sensing device that includes at least one GMR sensor, and preferably an array of GMR sensors, with each GMR sensor having a conducting spacer layer...
6626045 Pressure measurement device  
A pressure measurement device comprising a housing enclosing an elastic pressure measurement element and a magnet attached to the measurement element. First and second Hall sensors operatively...
6591688 Load sensing by partial magnetic saturation  
A load applied to a load cell's load-bearing member (21) causes that member to move against the force applied by springs (28 and 30) and thereby bring a magnet (24) into closer proximity to the...
6581470 Inductive pressure transducer  
The transducer (1) includes a support structure (2, 3) in which a metal body (8) is mounted, having a flat surface (8a) and on the opposite side a cavity (8b) for exposure to a pressure to be...
6539806 Fluid-load measurement by magnetic excitation and vibration sensing of a fluid-load-sensitive diaphragm  
Magnetic force from a momentarily excited coil (34) results in oscillatory flexure of a flexible diaphragm (30) loaded on one side by a liquid (10) whose level is to be measured. A permanent magnet...
6532822 Resonant torsion pendulum pressure sensor  
A pressure responsive mechanically resonant sensor device is provided that comprises a torsion pendulum driven at resonance. The pressure sensor includes a rigid frame to which is affixed a torsion...
6496019 Temperature compensated pressure sensor network  
A temperature compensated pressure sensor network for providing an output sensing signal representative of an applied pressure includes a reference oscillator circuit for providing a reference...
6484586 Differential pressure transducer  
A differential pressure transducer has a measurement chamber which is divided by a membrane into first and second measurement spaces which can be exposed to first and second pressures whereby...
6473711 Interchangeable differential, absolute and gage type of pressure transmitter  
A pressure transmitter with first and second absolute pressure sensors receives process pressures from corresponding first and second process inlets. A transmitter circuit coupled to the first and...
6393921 Magnetoelastic sensing apparatus and method for remote pressure query of an environment  
A pressure sensing apparatus for operative arrangement within an environment, having: a sensor comprising a hermetically-sealed receptacle, at least one side of which has an flexible membrane to...
6328647 Pressure differential detecting system, and method of use  
A differential pressure detecting system having a compliant first chamber, which is contained within a second environment, in combination with a sensor system for monitoring change in volume/shape...
6255609 High pressure resistant, low pressure actuating sensors  
Sensors for mounting in fluid chambers respond electrically to low pressures in the fluid, while resisting damage or leakage at high pressures. A flexible diaphragm, mounted at one end of a...
6182514 Pressure sensor for sealed containers  
A magnetic pressure sensor for sensing a pressure change inside a sealed container. The sensor includes a sealed deformable vessel having a first end attachable to an interior surface of the sealed...
6016707 Non-intrusive pressure variation monitoring device adapted to monitor abdominal pressure in pregnant women  
A pressure variation monitoring device adapted to measure pressure variation of an object is disclosed. The monitoring device includes an abutting device adapted to detect the pressure variation of...
5939638 Pressure sensor with protective internal wall  
A remote pressure or vacuum sensing device including a housing having first and second chambers separated by an internal wall, the first chamber being in fluid communication with a pressurized or...
5894144 Semiconductor acceleration sensor  
In a semiconductor acceleration sensor, a weight and thin beam parts adjacent to the weight are formed on a substrate, a moving electrode is formed on the weight, and a fixed electrode is formed at...
5874680 Combination in-line pressure sensor and portable gauge head  
A combination of an in-line pressure sensor and a portable gauge head are arranged such that they can be quickly connected and disconnected together and apart for giving a quick pressure reading of...
5798462 Magnetic position sensor with magnetic field shield diaphragm  
A differential pressure transducer includes a pair of interior chambers separated by a peripherally supported, nominally planar electrically conductive diaphragm. A magnetic assembly is positioned...
5793297 Self-monitoring pressure detection apparatus and method  
A pressure detection apparatus including a pressure detection diaphragm, pressure detection circuit for outputting a pressure detection signal proportional to a pressure applied to the pressure...
5747696 Method of non-invasively monitoring pressure of a compressed gas in a closed container  
A method for non-invasively monitoring a pressure of a compressed gas inside a closed container includes: forming a magnetic circuit through a portion of the outside wall of the container;...
5637905 High temperature, pressure and displacement microsensor  
A high-temperature, integrated, pressure sensor includes a single crystal semiconductor substrate that is provided with a recess in a first surface thereof, the recess bounded by a rim. A first...
5619046 Method of manufacturing a measuring device  
The invention concerns a method of manufacturing a measuring device of the Fabry-P erot resonator type. The invention likewise concerns a measuring device manufactured by means of the method. The...
5528069 Sensing transducer using a Schottky junction and having an increased output signal voltage  
A sensing transducer (10,30) and a method therefor uses a Schottky junction (12) having a conductive layer (16) disposed on a semiconductor substrate (14). The conductive layer (16) is generally...
5492017 Inductive pressure transducer  
An inductive pressure transducer senses fluid pressure within a tubular member by passing an alternating current within an inductor coil to generate a magnetic field. The magnetic field passes...
5490424 Pressure sensor with moisture resistance and uniform characteristics  
The invention is a pressure sensor including a main body including a pressure inlet at and end thereof, a deformable section deformed by a pressure introduced through the pressure inlet, and a...
5481919 Force multiplying pressure transmitter diaphragm and method employing flexible force transmitting column  
A pressure transmitter converts input pressures on the order of 0.000.15 inch of water column to proportional electrical output signals. A housing defines an open internal chamber and a...
5457988 Side pocket mandrel pressure measuring system  
A system for providing D.C. power at the earth's surface to a downhole well tool in a case hardened side pocket mandrel using an inductive coupling system where the mandrel has a pressure sealed...
5429000 Ferrofluid pressure sensor  
A differential pressure sensor includes a ferrofluid sensing element, or slug, that changes position in a tapered magnetic field in response to a pressure differential. The ferrofluid slug is...
5355714 Pressure sensor using a pressure responsive magnetic film to vary inductance of a coil  
A pressure sensor includes a diaphragm having a magnetic film fixed to one side thereof. The diaphragm is arranged to displace depending on a pressure differential applied thereacross to change an...
5349868 Pressure sensor including bridge circuit for detecting permeability of a magnetic layer  
In a bridge circuit of a pressure sensor, resistances are connected in series to the impedances of a pressure detection coil and of a dummy coil for differential provided for deforming and...
RE34694 Automatic transducer selection system for pressure measurement  
An automatic transducer selection system for fluid pressure measurement functions by using two or more transducers wtih different measurement ranges of accuracy and also by incorporating comparator...
5303595 Pressure sensor utilizing magnetostriction effect  
A pressure sensor in which a magnetostriction effect of an amorphous magnetic alloy is utilized. It is an object of the invention to suppress the thermal sensitivity change of the pressure sensor...
RE34510 Pressure sensor  
A pressure sensor having the structure wherein an amorphous magnetic alloy member or members are secured to both of a deforming part which is distorted by a pressure and a non-deforming part which...
5261273 System for detecting pneumatic pressure in tire  
The pneumatic pressure in a tire on a wheel of a vehicle is introduced into a pressure chamber positioned at a central axis about which the tire is rotatable through a communication passage defined...
5142225 Apparatus for measuring small displacements by using barberpole sensors producing a cyclical voltage having a mark/space ratio indicative of position  
An apparatus for measuring small displacements, either linear or angular, employ a pair of spaced "barber pole" or other magnetic field sensitive elements and a movable magnet, in which the exact...
5115675 Tensioned bellows pressure transducer  
A tensioned bellows pressure transducer having a pressure chamber [40], an elastic vibrating member [50], an electromagnetic coil [60] a linkage [33], a rigid body [30], a body extension [35], and...
4976151 Method and device for detecting blocked condition in a tube of a liquid infusion pump  
A detector for a blocked condition in a tube of a liquid infusion pump includes a moveable shaft which is kept in contact with the outer wall of a flexible tube for transporting a liquid...
Matches 1 - 50 out of 170 1 2 3 4 >