Class / Patent application number | Description | Number of patent applications / Date published |
073861650 | Pitot | 38 |
20090211372 | Ram Pressure Probe - Ram pressure probe having two ducts which are separated from one another and lead with one of their ends to a pressure measuring sensor, with a fluidic differential pressure increasing element and an opening at the respective other end of each duct, the openings being arranged at various locations between which there is a higher value for the differential pressure, generated by the effect of the differential pressure increasing element, than the value of the dynamic pressure of the flowing fluid, and all the openings ( | 08-27-2009 |
20090241688 | Hands-Free Capture Hood Support Device and Method - A hands-free support device and method for supporting an airflow hood relative to an airflow register is disclosed. The apparatus comprises a support device operably attached to the airflow hood and configured to support the airflow hood relative to a first surface proximate the register. The support device is configured to engage a second surface spaced away from the first surface. | 10-01-2009 |
20100043567 | MEASURING ARRANGEMENT FOR FLOW MEASUREMENT IN A CHANNEL - A measuring arrangement for determining flow speeds in a flow channel includes a probe tube which is introduced via a first opening into the flow channel. The probe tube is exposed to a flow with a flow speed, the side of the probe tube facing the flow comprising a plurality of openings which are interconnected inside the probe tube such that a total pressure dependent on the flow speed prevails inside the probe tube. The measuring arrangement also comprises a static pressure opening in the flow channel, and a differential pressure sensor that determines the differential pressure between the total pressure inside the probe and the static pressure in the flow channel. The probe tube may be partially surrounded by a shield which is mobile and/or length-adjustable and that, according to its position and/or length along the probe tube, may close one, several or none of the openings. | 02-25-2010 |
20100071479 | DEVICE FOR MEASURING THE TOTAL PRESSURE OF A FLOW AND METHOD IMPLEMENTING THE DEVICE - The invention relates to a device and to a method for measuring the total pressure of a flow. According to the invention, the device comprises a Pitot tube ( | 03-25-2010 |
20110061470 | Pitot tube design for incompressible fluids with viscosity and turbulence - A Pitot tube design and methodology are presented for use with incompressible fluids for a full range of viscosity and including the effect of turbulence on the flow characteristics and device response. Current practice assumes an inviscid fluid or a fluid having an unrealistically high viscosity (Poiseuille fluid) in the design and analysis of devices using Pitot tubes. A new Two-Fluid Theory, supported by experimental data, is used for the design analysis. | 03-17-2011 |
20110094311 | Differential pressure anemometer - A handheld airflow measurement device is provided that employs pitot-static principles instead of an anemometer. A pitot-static device has the advantage that it needs no moving parts and has little or no inertia. In a first aspect, therefore, a pitot-static device comprises a first plurality of hollow spokes and a second plurality of hollow spokes, the spokes of the first plurality being connected so as to allow fluid communication between their hollow interiors and each having at least one aperture facing in a first axial direction that is transverse to the radial direction, the spokes of the second plurality being connected so as to allow fluid communication between their hollow interiors and each having at least one aperture facing in a second axial direction that is opposed to the first axial direction. Such a device can be made symmetrical, meaning that it can be assembled from two identical half-mouldings. The second plurality of spokes can each have an aperture at the end thereof—additional to or as a replacement for the reverse-directed apertures. The device can comprise a handle for manual support, to allow it to be carried and located as required. In another aspect, a pitot-static device comprises a first plurality of hollow spokes extending radially from a central hub and a second plurality of hollow spokes extending in a radial direction from a central hub, the spokes of the first plurality being connected so as to allow fluid communication between their hollow interiors and each having at least one aperture facing in a first axial direction that is transverse to the radial direction, the spokes of the second being connected so as to allow fluid communication between their hollow interiors and each having at least one aperture, the device further comprising a handle for manual support. Having a handle, the device will be suited to portable uses; by combining this with a pitot-static measurement of airflow, the problems inherent in anemometer-based devices are avoided. The device can further comprise a ring around the central hub, the spokes extending from the hub to an inner face of the ring. | 04-28-2011 |
20110100137 | Pitot tube design for subsonic and supersonic flow with viscosity and turbulence - A pitot tube design and methodology are presented for use with compressible and incompressible fluids in subsonic and supersonic flow for a full range of viscosity and including the effect of turbulence on the flow characteristics and device response. Current practice assumes an inviscid fluid or a fluid having an unrealistically high viscosity (Poiseuille fluid) in the design and analyses of devices using pitot tubes. A new Two-Fluid Theory, supported by experimental data, is used for the design analysis. | 05-05-2011 |
20120085179 | Apparatus for measurement of ducted air - Apparatus for measurement of airflow in a duct is described. The apparatus combines a Pitot tube, sensing apparatus, control apparatus, a display, control switches and a handle into a unitary structure that is holdable with a single hand while performing obtaining measurement data. | 04-12-2012 |
20120096949 | BETA RATIO CHANGER FOR FLOW MEASUREMENT DEVICES - A beta ratio changer is provided for a flow measurement device having a fluid displacement member. The beta ratio changer includes a flange and a sleeve extending axially from the flange. The sleeve may be inserted into a fluid conduit of the fluid measurement device, reducing the inner diameter of the fluid conduit around the fluid displacement member. A new beta ratio may be determined from the diameter of the edge of the fluid displacement member and the inner diameter of the sleeve. | 04-26-2012 |
20120103108 | ANTI-ROTATION MECHANISM FOR PITOT TUBE - A valve assembly is provided and includes a pitot tube having an angled tip to extract from a duct formed by a housing a sample of a fluid to be communicated to an actuator configured to operate the duct, the pitot tube being disposed within the housing whereby the pitot tube is fixed longitudinally between the actuator and the housing and laterally within the housing and an anti-rotation mechanism coupled with the pitot tube to rotationally secure the pitot tube such that the angled tip is fixed to face rearwardly. | 05-03-2012 |
20120118076 | Method of Detecting, Measuring, Correcting and Removal of Ice for a Pitot-Static Based Airspeed Detection Syeste for an Aircraft - Test pressure bursts are utilized to eject a burst of air into the two channels of a pitot-static airspeed detection system and decay times for that air pressure are evaluated with respect to aircraft altitude. A higher-pressure burst of air may be employed to clear ice from a pitot-static channel. | 05-17-2012 |
20120180572 | EROSION-RESISTANT INSERT FOR FLOW MEASUREMENT DEVICES - An erosion-resistant insert is provided for a flow measurement device having a fluid displacement member. The insert includes a flange and a sleeve extending axially from the flange. The sleeve may be inserted into a recess machined into a fluid conduit of the fluid measurement device to protect the inner wall of the conduit. The insert maintains a property of the flow measurement device. | 07-19-2012 |
20130008264 | Systems and methods for measuring pressure differential created by flowing fluids - A system and method for measuring pressure differential including a first pitot tube, a second pitot tube, a pressure sensor, a low pass filter, a microcontroller, and a control system is presented. A first and second pitot tube are positioned in flowing fluid, creating positive pressure and negative pressure in the pitot tubes that may be transmitted to a pressure sensor. The positive and negative pressure may create a pressure differential in the pressure sensor measured as voltage. Voltage from the pressure sensor may be transmitted to a microcontroller which may be calibrated to a standard flow meter to fit a curve of the voltage in relation to the flow rate, enabling the fluid flow rate through the pipeline to be measured. The microcontroller may be used to store fluid flow rates or to further calculate volume of fluid flowing through a pipeline and may transmit data to a control system which may be used to program the microcontroller or may be used to display collected fluid flow rate and volume data. The system and method for measuring pressure differential may further be used to control fluid flow through a pipeline. A user may use a control system to monitor fluid use in a pipeline system and may program a microcontroller to open or close a control valve depending on the amount of fluid volume or flow rate flowing through the pipeline. | 01-10-2013 |
20130247686 | LARGE DIAMETER FLOW-THROUGH KIEL-STYLE PROBE FOR HIGH MOISTURE APPLICATIONS - A Kiel-style pressure probe includes pressure tubing having a remote sending end, the pressure tubing extending through an open-ended shroud, wherein the shroud has a diameter of at least about 0.375 to 0.50 inch and wherein a forward end of the shroud is formed with at least two drainage apertures in proximity to the remote sensing tip of the pressure tubing. | 09-26-2013 |
20140000384 | BALLAST WATER TREATMENT MONITORING SYSTEM | 01-02-2014 |
20140020479 | DEVICE FOR MAINTAINING AND ANALYZING AN AERODYNAMIC PROBE - A device for maintaining and analyzing an aerodynamic probe of stagnation pressure type intended to be installed in an aircraft comprises a channel with a first end that is intended to penetrate into the probe, and means for creating in the channel an air depression relative to the ambient pressure and means for recovering any particles sucked into the channel. | 01-23-2014 |
20140096618 | DUCT - Apparatus and method for providing the apparatus, the apparatus including: a duct; and a non-return valve; wherein the duct has a first portion and a second portion; the first portion has a first end and a second end; the first end is open to a fluid (e.g. air); the second end is connected to the second portion such that fluid is permitted to flow between the first portion and the second portion; the non-return valve is positioned at or proximate to the second end; and the non-return valve is arranged such that, upon application of a suction force to the first portion at the first end, fluid flows into the first portion via the non-return valve from outside the duct, and through the first portion from the second end to the first end. | 04-10-2014 |
20140290383 | WATER RESISTANT AIRCRAFT PITOT DEVICE - A pitot tube system having a pitot tube containing a porous hydrophobic fabric that blocks water and contaminants from reaching a pressure sensor. The distance in the pitot tube between the fabric and a front orifice of the tube is less than 2.4 times the height of the orifice, and preferably less than or equal to 0.38 times the height. The section of the tube through which the fabric extends defines an opening characterized by a minimum dimension greater than 0.15 inches, and preferably being at least 0.21 inches. The tube is a removable structure that attaches to a mount that forms a passage for communicating the pressure in the tube. That passage contains a second porous hydrophobic fabric that also blocks water and contaminants from reaching a pressure sensor. | 10-02-2014 |
20140318269 | DUST MEASUREMENT SYSTEM FOR FILTER - A dust measurement system measuring the build up of dust on a filter includes a monitoring device, a pitot tube, and an environment control unit. The pitot tube head aligned with the filter. The environment control unit receives the measured speed of air flow and compares the measured speed with a preset value. When the measuring speed is greater than the preset value, the environment control unit outputs the first control signal to the monitoring device, to control the monitoring device to display that the filter does not need to be replaced. When the measuring speed is less than or equal to the preset value, the environment control unit outputs the second control signal to the monitoring device, to control the monitoring device to display that the filter needs to be replaced. | 10-30-2014 |
20150059493 | Metering Device - According to the invention a device for precise metering of a fluid volumetric flow of low flow rates down to zero volumetric flow of a liquid component in a mixer feed line for mixing plastics is provided, the device having a fluid supply tank that is in fluid line communication with the mixer feed line via a pump and through a volumetric flow meter, is characterized in that a fluid return line, which leads back into the tank through a second volumetric flow meter and which branches off from one of the fluid lines between the tank and the mixer feed line downstream of the first volumetric flow meter through a distributor apparatus that has one input and two outputs, namely one into the return line and one into the mixer feed line, and that distributes an input volumetric flow into the two outputs, and specifically in an adjustable fluid rate ratio. | 03-05-2015 |
20150090050 | DIFFERENTIAL PRESSURE BASED FLOW MEASUREMENT DEVICE HAVING IMPROVED PITOT TUBE CONFIGURATION - A differential pressure flow measurement system includes a pressure sensor coupled to measurement circuitry. An elongate probe is configured to be inserted into a conduit which carries a flow of process fluid. The pressure sensor senses a pressure difference in the fluid flow generated as the fluid flows past the probe. A vortex shedding stabilizer is positioned proximate the elongate probe and in the flow of process fluid. The vortex shedding stabilizer is configured to stabilize vortex shedding in the flow of fluid proximate the elongate probe. | 04-02-2015 |
20150114136 | Average Pitot Tube Type Flow Meter - Average pitot-tube type flow meter according to the present invention has a total pressure tube and a static pressure tube. The total pressure tube and the static pressure tube are spaced from each other. Across the total pressure tube and the static pressure tube, a rectifying device and a connection case are installed as they are integrated into one body. The rectifying device is positioned in advance of total pressure holes and the total pressure hole and a static pressure hole are positioned inside the connection case. | 04-30-2015 |
20160025764 | METHOD AND DEVICE FOR ESTIMATING THE MACH NUMBER OF AN AIRCRAFT - A measurement unit for measuring a first static pressure of the ambient air in a first measurement zone of the aircraft, a measurement unit for measuring a second pressure of the ambient air, at least one static pressure probe, in a second measurement zone of the aircraft, the second pressure having a value lower than the first static pressure, a computation unit for estimating a Mach number using these two measured pressures and a data transmission unit configured to transmit the estimated Mach number to a user system. | 01-28-2016 |
20160033546 | WATER RESISTANT AIRCRAFT PITOT DEVICE - A pitot tube system having a pitot tube containing a porous hydrophobic fabric that blocks water and contaminants from reaching a pressure sensor. The distance in the pitot tube between the fabric and a front orifice of the tube is less than 2.4 times the height of the orifice, and preferably less than or equal to 0.38 times the height. The section of the tube through which the fabric extends defines an opening characterized by a minimum dimension greater than 0.15 inches, and preferably being at least 0.21 inches. The tube is a removable structure that attaches to a mount that forms a passage for communicating the pressure in the tube. That passage contains a second porous hydrophobic fabric that also blocks water and contaminants from reaching a pressure sensor. | 02-04-2016 |
20160084688 | PROCESS MEASUREMENT PROBE BOTTOMING INDICATOR - Systems and methods are disclosed for indicating bottoming contact between an inner wall of a fluid carrying conduit and a distal tip process measurement probe. A process device, such as a fluid flow meter, has a process measurement probe configured for insertion into the fluid carrying conduit. An insertion mechanism is coupled to the process measurement probe and configured to apply force to insert the process measurement probe into the fluid carrying conduit. A bottoming indicator is configured to provide an indication of proper bottoming of the distal tip of the process measurement probe against the inner wall of the fluid carrying conduit as a function of an insertion related force or pressure. | 03-24-2016 |
073861660 | Sensing at plural transverse locations | 5 |
20090139348 | AIRFLOW SENSOR WITH PITOT TUBE FOR PRESSURE DROP REDUCTION - An airflow sensor apparatus for measuring flow rate includes a pitot tube with a bypass channel wherein the pitot tube extends halfway into a flow channel in order to reduce a pressure drop. One or more upstream taps can be spaced along the pitot tube facing into a direction of a flow stream which directs the flow to the bypass channel. At least one or more downstream taps can be located to face perpendicular to the direction of flow, such that the fluid after passing over a flow sensor passes through the downstream tap(s). The upstream tap senses stagnation pressure and the down stream tap senses static pressure which is exerted in all directions in the flow channel in order to determine a velocity pressure based on a difference between pressures. | 06-04-2009 |
20140130608 | PITOT TUBE VELOCIMETER SYSTEM - An apparatus and method for sensing position according to flow velocity includes at least two pitot tubes each defining a central axis is along mutually orthogonal axes. Each of at least two pressure sensors is positioned in fluid communication with a corresponding one of the at least two pitot tubes. A controller receives outputs from the at least two pressure sensors and analyzes to determine at least one of an angular and translational velocity according to the outputs. A distance traveled is then determined according to the at least one of an angular and translational velocity. Corresponding methods of use and calibration are also disclosed. | 05-15-2014 |
20140208869 | APPARATUS FOR MEASUREMENT OF DUCTED AIR - Apparatus and methods for measurement of airflow in a duct are described. The apparatus combines a Pitot tube, sensing apparatus, control apparatus, a display, control switches and carry apparatus arranged into a unitary structure. | 07-31-2014 |
20140260671 | PITOT TUBE TRAVERSE ASSEMBLY - A pressure measurement system for measuring pressure in a conduit has a bluff body extending into the conduit. The bluff body has an upstream opening and a downstream opening. An upstream pitot tube is slidably engaged within the bluff body and has an open end positioned in the upstream opening. A downstream pitot tube is slidably engaged within the bluff body and has an open end positioned in the downstream opening. A differential pressure sensor is fluidly coupled to the upstream pitot tube and the downstream pitot tube to measure a pressure difference between the upstream pitot tube and the downstream pitot tube. | 09-18-2014 |
20150122053 | Pitot tube designs for compressible and incompressible fluid flow with viscosity and turbulence - This invention presents a Pitot tube design and methodology for determining the flow characteristics of fluids in subsonic and supersonic flow, including the effects of viscosity and turbulence. A new methodology, the Two-Fluid Theory, is developed which treats a real fluid as being composed of two ideal fluids: an inviscid fluid and a Poiseuille fluid. The resulting expression for flow velocity is applicable to a real fluid of any viscosity and to pipes of any L/D ratios, including entrance effects. | 05-07-2015 |
073861670 | Adjustable | 2 |
20150075293 | CUSTOMIZABLE AVERAGING PITOT TUBE PROBE AND PROCESS VARIABLE TRANSMITTER - A customizable length averaging pitot tube (APT) probe for insertion into a confined conduit, such as a process pipe, is disclosed. The APT probe includes a probe portion, configured to be inserted into the confined conduit, which includes longitudinally extending upstream, downstream and middle surfaces to form first and second fluid carrying plenums within the APT probe portion. A plurality of longitudinally arranged openings are disposed along the length of the upstream surface with each opening in fluid communication with the first fluid carrying plenum. A plurality of longitudinally arranged openings are disposed along the length of the downstream surface with each opening in fluid communication with the second fluid carrying plenum. A cap is affixed to an end of the APT probe portion to isolate the first and second fluid carrying plenums at the end of the APT probe portion. An elongated body is coupled to the APT probe portion and provides fluid passageways fluidically coupled to the first and second plenums for coupling process pressures from the first and second plenums to a pressure sensor. | 03-19-2015 |
20160187170 | VARIABLE LINE SIZE AVERAGING PITOT TUBE - Systems, apparatus and methods are disclosed for coupling an averaging picot tube (APT) primary element to a process pipe. A mounting assembly mounts the APT primary element to the process pipe such that a length of the APT primary element extending into the process pipe is adjustable to accommodate different sized process pipe diameters. The mounting assembly includes a weld coupling coupled to the process pipe over an opening in the process pipe and having the APT primary element extending therethrough into the process pipe. An extension pipe nipple is connected to the weld coupling and has the APT primary element extending therethrough such that a transition between a neck section and a sensor section of the APT primary element is positioned inside the extension pipe nipple. A union component, a ferrule, and a cap keep the APT primary element in the mounted position and form a process seal. | 06-30-2016 |
073861680 | With heating element | 6 |
20100101332 | AIRFLOW SENSOR WITH PITOT TUBE FOR PRESSURE DROP REDUCTION - An airflow sensor apparatus for measuring flow rate includes a pitot tube with a bypass channel wherein the pitot tube extends halfway into a flow channel in order to reduce a pressure drop. One or more upstream taps can be spaced along the pitot tube facing into a direction of a flow stream which directs the fiow to the bypass channel. At least one or more downstream taps can be located to face perpendicular to the direction of flow, such that the fluid after passing over a flow sensor passes through the downstream tap(s). The upstream tap senses stagnation pressure and the down stream tap senses static pressure which is exerted in all directions in the flow channel in order to determine a velocity pressure based on a difference between pressures. | 04-29-2010 |
20130145862 | Probe for Measuring the Total Pressure of a Flow and Method for Implementing the Probe - A probe for measuring the total pressure of a flow and a method for implementing the probe is provided. The probe is intended to be fitted in an aircraft. The probe comprises a Pitot tube and means for reheating the probe assembly. The probe also comprises means for measuring a local temperature of regions of the Pitot tube likely to accumulate particles conveyed by the flow independently of the means for determining the average temperature of the probe. If the temperature delivered by the means for measuring a local temperature of regions of the Pitot tube likely to accumulate particles conveyed by the flow is less than the first reference temperature, then an additional reheating of regions of the Pitot tube likely to accumulate particles conveyed by the flow is triggered. | 06-13-2013 |
20140116154 | ICE RESISTANT PITOT TUBE - A pitot tube includes a substantially cylindrical body portion and a tip portion extending along a pitot tube axis from the body portion. The tip portion includes an inlet opening and a radially tapering outer surface extending from the body portion toward the inlet opening. Another pitot tube includes a substantially cylindrical body portion and a tip portion extending along a pitot tube axis from the body portion. The tip portion includes an inlet opening. One or more electrical coils including one or more coil wraps are located at an interior of the pitot tube. One or more bulkeads are located between a forwardmost coil wrap and a drainage feature to limit travel of particles ingested into the interior. | 05-01-2014 |
20150075294 | PITOT TUBE - A pitot tube is provided having a tube wall and a heating arrangement for generating heat for heating thereby at least a portion of the tube wall to prevent the tube from becoming clogged with ice. The heating arrangement includes a radiation absorbing surface configured for absorbing electromagnetic radiation (EMR) and generating the heat. At least one radiation conveying portion is provided for receiving EMR from an EMR source and conveying it to the radiation absorbing surface. | 03-19-2015 |
20160041197 | ICE RESISTANT PITOT TUBE - A pitot tube includes a substantially cylindrical body portion having an interior defining a flow passage, and a tip portion extending along a pitot tube axis from the body portion. The tip portion includes an inlet opening, a radially tapered outer surface extending from the body portion toward the inlet opening, one or more bulkheads disposed at the interior to limit travel of particles ingested into the interior, at least one drain opening disposed directly adjacent to one of the one or more bulkheads, and one or more electrical coils comprising one or more coil wraps disposed at an interior of the pitot tube. The one or more coil wraps establish a variable watt density along the interior of the pitot tube. The one or more coil wraps also establish a variable watt density downstream of one or more of the one or more bulkheads. | 02-11-2016 |
20160131691 | SYSTEM AND METHOD FOR PROBE HEATER HEALTH INDICATION - A multi-function probe wire de-icing apparatus is described. The multi-function probe wire de-icing apparatus may include a multi-function probe wire, a main heater wire collocated with the multi-function probe wire, and a sacrificial wire deposed adjacent to the main heater wire. The sacrificial wire is configured to fail prior to the main heater wire failing. | 05-12-2016 |