Class 73/861.52 - With restriction

Subclass of Class 73 - Measuring and testing
Definition: Subject matter wherein the differential pressure is created
No. of applications: 35
Last issue date: 11/24/2011

Application No.	Application Title	Issue Date
20110283772	METHOD AND SYSTEM FOR MEASURING A FLOW A method is described for measuring a flow of gas passing a flow meter device. The device causes a pressure drop when a gas flows through it. The pressure drop across the device is a measure of the gas flow. The device is configured as a gas permeable tube that has a fl...	11/24/2011
20110224603	DEVICE AND METHOD FOR DETERMINING AT LEAST ONE FLOW PARAMETER A device for detecting at least one flow parameter includes a fluidic series connection of a first flow restriction, a first measurement area, a second flow restriction, and a second measurement area. A first sensor is provided for detecting a quantitative first measure...	09/15/2011
20100263455	FLUID FLOW DETECTOR A fluid flow detector includes a detector main body defining a fluid flow channel having a fluid flow detection channel positioned adjacent an upstream hole and a discharge channel positioned adjacent a downstream hole. A mobile body is positioned within the fluid flow ...	10/21/2010
20100242622	ARRANGEMENT FOR IMPROVING ACCURACY OF PRESSURE MEASUREMENT AND FLOW SENSOR An arrangement for improving an accuracy of a pressure measurement made of a breathing gas including drops of water or humidity flowing along a flow channel is disclosed herein. The arrangement includes at least one pressure measuring channel to transmit a pressure of t...	09/30/2010
20100186517	METHOD AND SYSTEM FOR DETECTING AIR PRESSURE NEUTRALITY IN AIR CONTAINMENT ZONES An airflow detecting system includes a tubular structure having an inner surface defining an interior of the tubular structure, one open end and an opposite open end. The tubular structure is configured to receive and expel air through both the one end and the opposite ...	07/29/2010
20100071478	Liquid Flow Detector and Transfusion Line Provided with Same An upstream hole is formed at the upstream end of a detector main body of a liquid flow detector for detecting liquid flow, and a downstream hole is formed at the downstream end, with a liquid flow channel comprising a liquid flow detection channel, discharge channel, a...	03/25/2010
20090183549	METHOD AND APPARATUS FOR IN SITU TESTING OF GAS FLOW CONTROLLERS Methods and apparatus utilize a rate of drop in pressure upstream of a gas flow controller (GFC) to accurately measure a rate of flow through the GFC. Measurement of the gas flow through the many gas flow controllers in production use today is enabled, without requiring...	07/23/2009
20090183548	METHOD AND APPARATUS FOR IN SITU TESTING OF GAS FLOW CONTROLLERS Methods and apparatus utilize a rate of drop in pressure upstream of a gas flow controller (GFC) to accurately measure a rate of flow through the GFC. Measurement of the gas flow through the many gas flow controllers in production use today is enabled, without requiring...	07/23/2009
20090090195	Differential pressure means for a gas meter arrangement, comprising an improved flow geometry A differential pressure system and a gas meter arrangement for precisely measuring a gas consumption by a gas meter is provided. A previously known gas meter is disposed in a bypass comprising a differential pressure system in the gas pipe for measuring a volumetric flo...	04/09/2009
20090093774	AMBULATORY PUMP WITH INTELLIGENT FLOW CONTROL The present invention includes an ambulatory medical fluid delivery system, which may comprise a fluid flow path for communicating between a source and a patient. The system may also comprise a reusable controller, which may be operable to control fluid flow in the path...	04/09/2009
20090084193	Apparatus for measuring an exhaust gas recirculation flow of an internal combustion engine In an apparatus for measuring an exhaust gas recirculation flow through an exhaust gas recirculation line of an internal combustion engine, the exhaust gas recirculation line has a constriction region and a flange structure integrally formed therewith, said communicatio...	04/02/2009
20080247907	Dual inlet microchannel device and method for using same A dual inlet microchannel device and a method for using the device to perform a flow-through kinetic assay are described. A microplate having an array of the dual inlet microchannel devices and in particular their specially configured flow chambers is also described. Se...	10/09/2008
20080216587	TORUS WEDGE FLOW METER A flow meter for measuring the volume of fluid flowing through the meter includes an inner cylindrical tube through which the fluid flows and an outer cylindrical tube tending over the inner cylindrical tube. The outer cylindrical tube is radially spaced from the cylind...	09/11/2008
20080173085	METHOD & APPARATUS FOR FLUID FLOW RATE AND DENSITY MEASUREMENT A fluid flow rate and density measuring apparatus is disclosed including a section of cylindrical conduit comprising a measurement section or housing for the flow sensor. The flow sensor housing is fixedly attached to a conduit at its distal ends allowing fluid to pass ...	07/24/2008
20080072687	DIAL-TYPE FLOW-RESTRICTION GAUGES Dial-type flow-restriction gauges are used for indicating flow-restriction conditions of fluid filters, such as automobile air and fuel filters. Prior versions of these type filters have been more complicated and costly to manufacture than desirable. Accordingly, the pr...	03/27/2008
20080059084	MULTI-GAS FLOW DEVICE A system and method of characterizing or controlling a flow of a fluid is provided that involves a sensor conduit and a bypass. A plurality of fluids may be utilized in the flow control device based on characteristic information of the device generated during calibratio...	03/06/2008
20080016968	Fluid Flow Meter And Mixer Having Removable And Replacable Displacement Member Fluid flow apparatus, such as a fluid flow meter, a fluid mixing device or a fluid dispersing device, includes a fluid displacement member removeably mounted in a conduit and a pipe or tube extending through the wall of the conduit and having a portion extending through...	01/24/2008
20070272032	STATIC PRESSURE TUBE APPARATUS, METHOD, AND SYSTEM An apparatus, system, and method for measuring static pressure in a warm gas flow while minimizing particulate deposit formation includes a housing containing the flow of gas, a pressure sensor, and a heated pressure sampling tube attached to the sensor, with the tube s...	11/29/2007
20070193368	Ultra low pressure drop flow sensor A fluid velocity sensor includes a sensor die for detecting a fluid property of a fluid flowing through a low resistance flow channel defined by a flow channel wall. One or more tap can be oriented facing into a direction of a flow stream of a fluid flowing through a fl...	08/23/2007
20070193369	Multiphasic overreading correction in a process variable transmitter A process variable transmitter is operably coupleable to a source of multiphasic process fluid flow. The process variable transmitter is configured to obtain information relative to temperature, a reference pressure, and differential pressure across a differential press...	08/23/2007
20070157907	GAS DENSITY RATIO DETECTOR, GAS CONCENTRATION DETECTOR, AND FUEL VAPOR TREATMENT APPARATUS When a gas flow producer is driven, plural kinds of gases flow into a measure-passage at respective timing. An orifice is provided in the measure-passage. The orifice has a diameter-changing portion which restricts a separation of gases from an inner surface of the meas...	07/12/2007
20070157738	Flow meter with fluid lens A flow metering apparatus possessing a housing with a chamber including and entrance and an exit for the passageway of fluid therethrough. A flow directing body is located in the chamber and includes first and second conical portions positioned on either side of a cylin...	07/12/2007
20070151366	FLOWMETER AND METHOD FOR THE MAKING THEREOF A flowmeter is provided that comprises a leadframe assembly (140) and a body (144) disposed at least partially around the leadframe assembly (140). The body (144) has a flow passage therethrough that comprises a first channel (178) hav...	07/05/2007
20070062306	Fluid sensor assembly A fluid sensor assembly is provided for sensing a fluid property in-line. The assembly includes a body with a port for connecting the body to a fluid line and internal passage connecting the first port to a second port. The assembly also includes a sensor interface port...	03/22/2007
20070044573	Flow Meter A rectifying module is arranged on an upstream side of a flow passage containing a flow velocity sensor. The rectifying module includes mesh members each having a plurality of circular small holes and ring-shaped spacers, wherein the mesh members and the spacers are alt...	03/01/2007
20070017303	Flow rate-measuring device A flow sensor 22 is provided on a wall surface of a flow path 4 in which a fluid to be measured. A member having minimal cross-section flow path 17 which has a diameter extremely smaller than that of the flow path 4 where the flow sensor 2...	01/25/2007
20060266128	Fluid flow measurement device The invention is directed to a device for obtaining flow rate measurements including a sensor assembly and a housing. The sensor assembly includes a body defining a first fluid flow passage having an inlet, an outlet, a flow restricting element in the first fluid flow p...	11/30/2006
20060236781	Differential pressure type flowmeter and differential pressure type flowmeter controller A cost reduction can be achieved by making a differential pressure type flowmeter simple in structure, and highly accurate flow rate measurements can be attained over the wide flow rate range of 100% to 1% with errors E of less than 1 (% SP) both in real time and in a s...	10/26/2006
20060144163	Gas flow measuring device The invention relates to a device for the exact measurement of gases with a plurality of sensors which are evaluated by means of a microcontroller so that high accuracy of measurement is obtained independently of the environmental conditions, which are also measured. ...	07/06/2006
20060112771	Differential pressure flowmeter, flow controller, and apparatus for processing substrate A differential pressure flowmeter comprises a tube having a circular section, a first pressure sensor for measuring a pressure of a liquid flowing into the tube, a second pressure sensor for measuring a pressure of a liquid flowing out of the tube, a storage part for st...	06/01/2006
20060086194	Laminar flow meter or controller Volumetric flow meters, volumetric flow controllers, mass flow meters, and mass flow controllers using a transverse laminar flow assembly are described. The flow assembly may be constructed from a plurality of open and/or closed slices or layers stacked upon one another...	04/27/2006
20060060000	Device for differential pressure measurement in anesthetic dispensing devices A device is provided for measuring the differential pressure in anesthetic dispensing devices, with which the differential pressure can be measured between two lines (2, 6) for supplying gaseous components to a mixing site (3). The device has at least one ...	03/23/2006
20060053902	Devices, installations and methods for improved fluid flow measurement in a conduit Differential pressure measurement devices, installations and methods are disclosed, the devices including a main body and retainer. The main body is characterized by a front portion having a substantially constant curvilinear flow facing front surface, a rear portion, a...	03/16/2006
20060042399	Fluid mass flow meter device A mass flow meter device utilizing a housing having a wall portion forming a chamber with an entrance and exit for passing fluid through the same. A body is located within the chamber and is composed of a first conical portion, a second conical portion, and a cylindrica...	03/02/2006
20050211000	Flowmeter In a flowmeter of the present invention, there are provided a single differential pressure gauge using metal diaphragms, and an orifice member replaceable according to a range of a flow rate to be measured. The differential pressure gauge comprises a disk-like ceramic e...	09/29/2005

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Class 73/861.52 - With restriction