Class 73/705 - Photoelectric

Subclass of Class 73 - Measuring and testing
Definition: Subject matter wherein the response of a transducer device
No. of applications: 36
Last issue date: 12/22/2011

Application No.	Application Title	Issue Date
20110311179	COMPARTMENTALIZED FIBER OPTIC DISTRIBUTED SENSOR A distributed fiber optic sensor comprises a conduit having a plurality of sealed compartment extending along its length. A sensing optical fiber is disposed in the conduit and extends through the sealed compartment to form a series of separate sensing elements, each of...	12/22/2011
20110232388	SYSTEMS AND METHODS FOR MEASURING FLUID PRESSURE WITHIN A DISPOSABLE IV SET CONNECTED TO A FLUID SUPPLY PUMP Systems and methods of measuring pressure of fluid in a disposable IV set connected to a fluid supply pump is disclosed. At least one sensing arrangement coupled to the fluid supply pump is provided. A chamber having a movable element is provided, the movable element co...	09/29/2011
20110190640	Pressure sensor with an interferometric sensor and an in-fiber Bragg grating reference sensor A pressure sensor (10 for medical applications comprises a silica optical fiber extrinsic Fabry-Perot interferometric (EFPI) pressure sensor (2) and an in-fiber Bragg grating (FBG, 3). The cavity of the EFPI pressure sensor (2) is formed by t...	08/04/2011
20110178413	INTRAVASCULAR OPTICAL COHERENCE TOMOGRAPHY SYSTEM WITH PRESSURE MONITORING INTERFACE AND ACCESSORIES An optical coherence tomography system and method with integrated pressure measurement. In one embodiment the system includes an interferometer including: a wavelength swept laser; a source arm in communication with the wavelength swept laser; a reference arm in communi...	07/21/2011
20110137240	HOLOGRAPHIC OCCLUSION DETECTION SYSTEM FOR INFUSION PUMPS A holographic occlusion detection system has a white-light holographic label placed onto a sensing portion or surface of a pressure sensor connected to infusion tubing. The pressure sensor at the sensing portion can have a relatively thin wall section and may be wider a...	06/09/2011
20110120226	MICRON-SCALE PRESSURE SENSORS AND USE THEREOF An optical fibre sensing device for detecting physical parameters such as pressures, strains and temperatures comprises a probe housing therein an optical fibre. The distal end of the probe houses a distal portion of the optical fibre having a section provided with a fi...	05/26/2011
20110048136	PRESSURE SENSOR ASSEMBLY AND METHOD OF USING THE ASSEMBLY A pressure sensor assembly comprises a sensor housing having a flexible wall that is configured to deform in response to a pressure difference between the interior and exterior of the sensor housing; —a first fiber optical cable section that is bonded to the flexible ...	03/03/2011
20110023617	ULTRA-MINIATURE FIBER-OPTIC PRESSURE SENSOR SYSTEM AND METHOD OF FABRICATION Ultra-miniature surface-mountable Fabry-Perot pressure sensor is constructed on an optical fiber which utilizes a 45° angled fiber tip covered with a reflective layer which steers the optical axis of the fiber by 90°. The Fabry-Perot cavity is formed on the sidewall o...	02/03/2011
20100180686	PRESSURE SENSOR A pressure sensor is disclosed wherein pressure induced changes in birefringent properties of an optical sensing element are read out by transmission of at least one light beam. The pressure sensor can include at least one single-material transparent body which is subje...	07/22/2010
20100089168	ACTUATING DEVICE WITH POSITION SENSING DEVICE The present invention relates to an actuating device (12) with a pressure cell (1) for actuating mechanical systems by means of an actuating rod (13). To determine intermediate positions of the actuating rod (13) in a simple and inexpensive w...	04/15/2010
20100064785	OPTICAL PRESSURE SENSOR HAVING AT LEAST TWO OPTICAL FIBERS The invention relates to an optical pressure sensor based on light intensity measurements and comprises at least one membrane and two parallel optical fibers. At lest one first fiber has a fiber end and a light emission surface for emitting light in the direction of the...	03/18/2010
20100005893	METHOD OF MONITORING PRESSURE OF A GAS SPECIES AND APPARATUS TO DO SO A method of monitoring pressure of a gas species up to at most a predetermined maximum pressure value is disclosed. The method includes exposing the gas species to transmission of laser light, periodically modulating the wavelength of the laser light over a wavelength b...	01/14/2010
20090301208	Differential pressure measuring system and differential pressure measuring method A differential pressure measuring system includes a light source for emitting a light, a first transducer for attenuating the intensity of the emitted light in a first range, depending on a first pressure, and providing a first light, a second transducer for attenuating...	12/10/2009
20090193901	Sensor for Detecting Arcing Faults The present invention is directed to a sensor for detecting arcing faults, the sensor combining a photodetector, a pressure detector, and an accelerometer along with integrated circuitry. The circuitry controls each detector, operates the self-test circuitry, conditions...	08/06/2009
20090044629	METHOD OF MONITORING PRESSURE OF A GAS SPECIES AND APPARATUS TO DO SO A method of monitoring pressure of a gas species up to at most a predetermined maximum pressure value is disclosed. The method includes exposing the gas species to transmission of laser light, periodically modulating the wavelength of the laser light over a wavelength b...	02/19/2009
20070151346	Optical Pressure Monitoring System An optical pressure monitoring system includes a tube from an infusion set and an optical signal sensor disposed to detect changes in the diameter of the tube and thereby determine pressure changes within the tube. By selecting the position of the tube relative to the o...	07/05/2007
20070144265	Method of monitoring pressure of a gas species and apparatus to do so A method of monitoring pressure of a gas species up to at most a predetermined maximum pressure value is disclosed. The method includes exposing the gas species to transmission of laser light, periodically modulating the wavelength of the laser light over a wavelength b...	06/28/2007
20070089522	Differential pressure measuring system and differential pressure measuring method A differential pressure measuring system includes a light source for emitting a light, a first transducer for attenuating the intensity of the emitted light in a first range, depending on a first pressure, and providing a first light, a second transducer for attenuating...	04/26/2007
20070068262	Fiber Optic Differential Pressure Sensor A fiber optic differential pressure sensor. In a described embodiment, a differential pressure sensor system for use in a subterranean well includes a fluid property sensing housing having a flow passage formed therethrough. A differential pressure sensor has an optical...	03/29/2007
20070068261	Pressure sensor A pressure sensor having a diaphragm which is differently deformable or locally changeable by pressure differences is described. A construction advantageously usable even in poorly accessible spaces having high temperatures is obtained in that at least one functional se...	03/29/2007
20070022816	Pressure indicating apparatus A pressure indicating apparatus is disclosed. The apparatus indicates pressure change in a device, the apparatus comprises: a pointer, optical sensing means, a planar element and indicating means. The pointer moves in response to the change in pressure, which in turn mo...	02/01/2007
20060289386	Etchant, method of etching, laminate formed thereby, and device An etchant including a halogenated salt, such as Cryolite (Na₃AlF₆) or potassium tetrafluoro borate (KBF₄), is provided. The salt may be present in the etchant in an amount sufficient to etch a substrate and may have a melt temperature o...	12/28/2006
20060288789	Micromechanical pressure sensor element and method for using a pressure sensor element of this type A micromechanical pressure sensor element, in particular for tire pressure measurement. The device has at least: a layer system having a diaphragm underneath which a cavity is formed, which is separated from an external space outside the pressure sensor element; a measu...	12/28/2006
20060283255	High-temperature pressure sensor A high-temperature pressure sensor that includes a dielectric layer. The pressure sensor also includes a substrate capable of withstanding temperatures greater than 450° C. without entering a phase change, at least one semiconducting material deposited on the sapphire ...	12/21/2006
20060225510	Miniature optically coupled electrically isolated ultrasensitive dynamic pressure detector A system for monitoring low dynamic pressures in confined spaces, such system comprising a catheter, a multilayered corrugated membrane of diameter less than 2 mm with a reflective inner layer mounted within said catheter; a set of optical fibers comprising one or more ...	10/12/2006
20060144150	Optical pressure-sensing system and method for sensing pressure The optical pressure-sensing system essentially comprises a light source, a resonant cavity and a detector, where the light source is used for generating a light with a predetermined wavelength, the resonant cavity includes a stationary wall with a stationary plane and ...	07/06/2006
20060137456	Static and dynamic pressure sensor A sensor, in accordance with aspects of the present technique, is provided. The sensor comprises a membrane formed of gallium nitride. The membrane is disposed on a substrate, which is wet-etched to form a closed cavity. The membrane exhibits both a capacitive response ...	06/29/2006
20060070446	PRESSURE GAUGE A pressure gauge includes a housing and a mechanical sensor placed in the housing for sensing change of the pressure. A characteristic of the sensor varies in correspondence to the change of the pressure. The gauge also includes an optical fiber, at least part of which ...	04/06/2006
20060021441	Method of monitoring pressure of a gas species and apparatus to do so A method of monitoring pressure of a gas species up to at most a predetermined maximum pressure value is disclosed. The method includes exposing the gas species to transmission of laser light, periodically modulating the wavelength of the laser light over a wavelength b...	02/02/2006
20050210989	Microresonator-based high-performance high-pressure sensor and system An optically-powered integrated microstructure pressure sensing system for sensing pressure within a cavity. the pressure sensing system comprises a pressure sensor having an optical resonant structure subject to the pressure within the cavity and having physical proper...	09/29/2005
20050183507	Fluid diffusion resistant glass-encased optical sensor A fluid diffusion resistant tube-encased fiber grating pressure sensor includes an optical fiber 10 having a Bragg grating 12 impressed therein which is encased within a sensing element, such as a glass capillary shell 20. A fluid blocking coating <...	08/25/2005
20050178206	Optical pressure monitoring system An optical pressure monitoring system includes a tube from an infusion set and an optical signal sensor disposed to detect changes in the diameter of the tube and thereby determine pressure changes within the tube. By selecting the position of the tube relative to the o...	08/18/2005
20050172721	Pressure sensor assembly suitable for use in harsh environments A sensor for sensing the pressure of a first fluid is provided. In one embodiment, sensor for sensing the pressure of a first fluid includes a fiber optic based sensing element disposed in a housing. A buffer fluid is disposed in the housing and is in fluid communicatio...	08/11/2005
20050103108	System and method for determining air pressure A pressure gauge for determining air pressure of an inflatable item and a method of doing the same are provided. Embodiments of the present invention provide a source of light capable of providing more than one color of light, where each color of light within the more t...	05/19/2005
20050022603	Method of monitoring pressure of a gas species and apparatus to do so A method of monitoring pressure of a gas species up to at most a predetermined maximum pressure value is disclosed. The method includes exposing the gas species to transmission of laser light, periodically modulating the wavelength of the laser light over a wavelength b...	02/03/2005
20050016284	Pressure indicator A pressure indicator comprising a piston which is displaceably mounted in a housing counter to the pressure of a spring on an axis and which can be impinged upon with pressure which is to be measured; also comprising optical display means actively cooperating with the p...	01/27/2005

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Class 73/705 - Photoelectric