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7992446 |
Pressure measuring method and device
Disclosed is a method for measuring pressure in a container (1) filled or capable of being filled, using a pressure sensor (6) and a control unit (5). The filling or emptying is carried out under...
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7921725 |
Pressure sensor with dual chamber cover and corrugated membrane
A pressure sensor assembly for fitting within the valve stem of a vehicle tire comprises a substrate assembly defining a plurality of holes; a pressure sensor and a temperature compensation sensor...
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7827867 |
Pressure sensing device
A pressure sensing device comprising a base element for fastening the pressure sensing device provided with a connecting duct for feeding a pressurized fluid. The pressure sensing device has a...
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7771380 |
Pressure sensing
A biological fluid device (703) comprises a pressure sensor (702), which is arranged on the device. The pressure sensor comprises a compressible container, the compression of which is indicative of...
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7678065 |
Implant with intraocular pressure sensor for glaucoma treatment
The invention discloses a trabecular stent and methods for treating glaucoma. The stent may incorporate an intraocular pressure sensor comprising a compressible element that is implanted inside an...
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7617734 |
Pressure sensor with dual chamber cover
A pressure sensor assembly is provided for fitting within the valve stem of a vehicle tire. The assembly comprises a substrate assembly defining a plurality of holes. A pressure sensor and a...
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7568395 |
Pressure sensor with dual chambers
The present invention relates to a pressure sensor. The pressure sensor includes a substrate assembly. The substrate assembly defines sealed channels and includes a conductive layer. A conductive...
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7526960 |
Pressure transmitting connector for an endoscopy system
The inventive pressure transmitting connector, in particular for an endoscopy system includes a fluid transporting channel, a blind compartment which opens towards the transport channels by a pipe...
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7464602 |
Pressure transmission catheter with sheath
Methods and apparatus for sensing pressure are disclosed. One disclosed pressure measuring device comprises a pressure transmission catheter including a stem portion and a sheath fixed to the stem...
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7458272 |
Capacitative pressure sensor with ceramic membrane
A pressure sensor for sensing a fluid pressure in harsh environments such as the air pressure in a tire formed on a wafer substrate. Associated circuitry deposited in CMOS layers on the wafer...
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7367235 |
Thermal expansion compensated pressure sensor
A pressure sensor (30) for environments with wide ranging temperatures such as vehicle tires. The sensor has a conductive sensor membrane (53) exposed to the fluid pressure to be sensed, and a...
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7322247 |
Gasket having a fiber-optic pressure sensor assembly
A sensor assembly includes a stainless steel tubular housing. Within the housing is a polyetheretherketone tube and a sensor. An optical fiber joins the sensor to a transmission cable and is...
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7302854 |
Method and apparatus for the detection of high pressure conditions in a vacuum-type electrical device
A method for detecting a high pressure condition within a high voltage vacuum device includes detecting the position of a movable structure such as a bellows or flexible diaphragm. The position at...
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7296474 |
Fluid sensor having a low pressure drain
A sensor is provided for a fluid system having a tank and a source of pressurized fluid. The sensor has a sensor body enclosing a sensor element that is configured to sense a parameter of the...
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7260995 |
Pressure sensor having thin pressure sensing membrane
A pressure sensor is provided having a chamber partially defined by a flexible membrane which is less than three microns thick, exposed to fluid pressure and is configured to deflect from a...
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7258019 |
Pressure sensor for high acceleration environments
A pressure sensor for sensing a fluid pressure in a high acceleration environment. The sensor has a chamber partially defined by a non-planar membrane, the chamber containing a fluid at a reference...
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7258020 |
Pressure sensor with conductive ceramic membrane
A pressure sensor for sensing a fluid pressure in harsh environments such as the air pressure in a tire formed on a wafer substrate. Associated circuitry deposited in CMOS layers on the wafer...
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7234356 |
Shock resistant blood pressure measuring apparatus
A pressure measuring apparatus includes a gage that is at least partially imbedded within a flexible elastomeric member disposed within an interior cavity of a device housing. A shock resistant...
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7165460 |
Temperature compensated pressure sensor
A pressure sensor (30) for environments with wide ranging temperature variations such as vehicle tires. The sensor has a sensor membrane (53) exposed to the fluid pressure to be sensed, and a...
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7162926 |
Lead embedded pressure sensor
A pressure capsule embedded in a pacemaker lead to monitor intracardiac chamber pressure is described. This pressure monitor capsule provides highly accurate pressure readings while insuring a high...
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7143652 |
Pressure sensor for high acceleration environment
A pressure sensor (30) for harsh environments such as vehicle tires, the sensor having a chamber (58) partially defined by a flexible membrane (50), the chamber containing a fluid at a reference...
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7131336 |
Pressure transmitter installation in a process line of a process facility
A flow control unit having a housing with a valve chamber. The valve chamber has an inlet and an outlet. The inlet of the valve chamber is placed in communication with the process circuit. A valve...
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7093494 |
Micro-electromechanical pressure sensor
A pressure sensor (30) for harsh environments such as vehicle tires, the sensor having a chamber (58) partially defined by a flexible membrane (50), the chamber (58) containing a fluid at a...
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7089797 |
Temperature insensitive pressure sensor
A pressure sensor that compensates for variations in temperature by having first (53) and second (51) chambers with first and second respective flexible membranes. The first and second flexible...
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7089798 |
Pressure sensor with thin membrane
A pressure sensor (30) for harsh environments such as vehicle tires, formed from a chamber (58) partially defined by a flexible membrane (50), the chamber (58) containing a fluid at a reference...
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7080695 |
Fire extinguisher
The present invention relates to a fire extinguisher, in particular, to a fire extinguisher with an observation window formed in it, allowing to observe inside thereof so that one can easily...
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6883380 |
Pressure sensor capsule
A pressure sensing capsule includes a pressure sensor inside a capsule wall. The capsule wall includes a feedthrough opening. The pressure sensor is mounted to a stress isolation member with a...
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6779405 |
Method of measuring vacuum pressure in sealed vials
The present invention provides a fast and accurate method of measuring the vacuum pressure in a sealed glass vial or other electrically non-conductive vessel. In the method the vial or vessel to be...
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6578428 |
Blood pressure measuring apparatus
An inflatable sleeve for a blood pressure measuring apparatus includes a socket which is capable of receiving an engagement portion of a gage housing thereby permitting direct attachment to the...
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6568277 |
Method and device for measuring pressure inside a steam generator
The method and device are able to overcome possible clogging of measuring devices comprising probes each surrounded by a tranquilliser. It chiefly comprises a tranquilliser (21), preferably...
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6561038 |
Sensor with fluid isolation barrier
A sensor capsule suitable for use in an industrial process fluid transmitter. The sensor capsule includes a block that has a sensor mounting hole. The block includes two half-blocks joined along...
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6272930 |
Tube assembly including a pressure measuring device
The invention relates to a device for measuring the pressure of a liquid flowing in a tube (20, 22) into or out from the human body, the device comprising: an elongate body (10) having first and...
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5442962 |
Capacitive pressure sensor having a pedestal supported electrode
A capacitance pressure sensor includes a conductive diaphragm positioned between two pneumatically separate chambers. The diaphragm is supported at its periphery by a concave base member. An...
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5349866 |
Digital pressure gauge
A digital pressure gauge includes a casing having a pressure sensitive member which responds when pressure is passed therethrough and a digital display member electrically connected to the pressure...
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5029478 |
Fluid isolated self-compensating absolute pressure sensor transducer
An absolute pressure sensor capsule and sensor resulting therefrom are disclosed. In one preferred embodiment, the capsule includes a sensor die of a first material, an intermediate spacer of a...
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5024098 |
Pressure sensor useable in oil wells
A pressure sensor of the present invention can perform pressure measurements under very severe mechanical and thermal conditions. It comprises a cell carrying a strain-measuring circuit. The cell...
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5016473 |
Altimeter
The small altimeter according to the invention comprises a frame (7-11;14,15), a display comprising drums (45,79) and a dial (23) cooperating with a hand (46) and a multiplying gear train (53 to...
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4984467 |
Transducer for pressures and/or vibrations and method for manufacturing thereof
A pressure transducer comprising a rigid body formed of noncreeping material with a ringlike shape and having a central opening, and a radially extending plane end surface, a diaphragm unitary with...
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4953404 |
Mechanism for an aneroid barometer
Mechanism for an aneroid barometer comprising, in a support 2, a primary lever 4 whose center is in contact with the cell 3, the axis of rotation 40 of this primary lever being located at the...
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4843886 |
Pressure measuring device
The pressure measuring device has a housing in which a pressure chamber is located in a pin extending freely in the interior of the housing from a base. The pressure chamber wall is deformable...
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4829825 |
Multiple diaphragm probe seal
An improved diaphragm probe comprising a plate having a portion removed to form one or more cavities. At least two diaphragm strips sealed to close off each of the external openings of each of said...
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4800758 |
Pressure transducer with stress isolation for hard mounting
A pressure transducer has a stress isolator layer which permits the sensor to be non-resiliently mounted (hard mounted) to a mounting surface that in turn is subjected to strain. The strain of the...
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4754647 |
Semiconductor integrated pressure transducer
A semiconductor integrated pressure transducer in which a semiconductor substrate incorporates a hermetically sealed system comprising a first chamber communicating with a second chamber via a...
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4733564 |
Pressure gauge with a capsule closed by a resilient membrane
The pressure gauge with a capsule formed by a cylindrical low cap sealed by a circular resilient membrane comprises, between this membrane and an indicating pointer, a kinematic linkage exclusively...
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4667514 |
Parameter sensors and monitors
Parameter sensors and monitors are described incorporating one of a variety of parameter responsive structures constructed and arranged for expansion and contraction causing a component of motion...
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4622854 |
Rounded wall surface acoustic wave sensors
Disclosed is an externally loaded pressure sensor using a pair of SAW devices formed on the wall of an interior cavity. The difference frequency of these devices is used as a...
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4622855 |
Low thermal response time surface acoustic wave sensors
Disclosed is an externally loaded pressure sensor using a pair of SAW devices formed on the wall of an interior cavity. The difference frequency of these devices is used as a...
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4598590 |
Electret transducer for blood pressure measurement
A back electrode has a plurality of ridges on one surface. An electret foil is spaced from the ridged surface of the back electrode. In the absence of applied pressure, a gap remains between the...
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4543824 |
Barometer
A barometer which includes a vacuum housing, a pivotably supported pointer shaft, a return spring for the pointer shaft and a transmission mechanism, which exhibits a pivotably supported output...
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4402226 |
Ice stress gauge
A stress gauge comprising a pair of substantially circular metal sheets welded together along their circumference, a metal tube in communication with the space between metal sheets, a pressure...
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