| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 073540040 | Friction tube (e.g., capillary) | 21 |
| 20090193878 | METHOD FOR DETECTING LEVELS OF OVERALL VISCOSITY OF A SAMPLE OF WHOLE BLOOD - A method for detecting levels of viscosity of a sample of whole blood, comprising the steps of providing a curve of the kinetics of optical density of the sample of whole blood, said curve comprising a first point (b) having a value of optical density and a point (c) of minimum value of said optical density; determining the value of the drop between the value of optical density in correspondence with the point (b) and the minimum value of optical density in correspondence with the point (c); obtaining information, based on the value of drop, on the value of viscosity of said sample of whole blood, wherein a low value of the drop of optical density corresponds to a higher level of viscosity of the sample of blood and a high value of the drop corresponds to a lower level of viscosity of the sample of blood. | 08-06-2009 |
| 20100281956 | VISCOMETER AND A METHOD FOR OPERATING THE SAME - A viscometer adapted to determine a temperature at which a liquid test sample has a predetermined viscosity. A method of operating a viscometer comprising the steps of: drying the air contained in the capillary tube; advancing the liquid test sample from the sample reservoir to the capillary tube; changing the temperature of the liquid test sample to a first sub-zero degrees Celsius temperature, and determining a first viscosity of the liquid test sample at the first sub-zero degrees Celsius temperature. Use of a capillary tube for determining a temperature at which a liquid test sample has a predetermined viscosity. | 11-11-2010 |
| 20110126614 | MEASURING PROCEDURE AND MEASURING DEVICE FOR MEASURING PHYSICAL QUANTITIES OF NON-COMPRESSIBLE MEDIA - Measuring device for measuring the dynamic viscosity and the density as physical quantities of an essentially non-compressible measuring medium, with a vessel having a total volume, which is charged with a compressible medium and into which a measuring medium with a fraction volume may be introduced, and with pressure means for measuring an initial pressure and a modification internal pressure in the vessel, in which modification means for compressing and decompressing, respectively, the compressible medium are provided, by means of which the total volume of the vessel may be modified by a predetermined modification volume and in which the pressure means for measuring the modification internal pressure in the vessel in consequence of the compression and decompression, respectively, by the modification means are formed and in which there is provided a collection vessel connected with the vessel via an opening of the vessel and a capillary tube for collecting a liquid measuring medium. | 06-02-2011 |
| 20110239744 | DEVICE AND METHOD FOR MEASURING THE VISCOSITY OF A FLUID - The invention relates to a method for measuring the viscosity of a fluid, said method comprising the following steps: (a) providing a flow of said fluid in a laminar state inside a channel ( | 10-06-2011 |
| 20130036797 | FLUID VISCOSITY MEASURING DEVICE - Disclosed is a fluid viscosity measuring device which can measure the viscosity of a fluid such as blood. The fluid viscosity measuring device of the present invention comprises: a first fluid inlet portion in which a fluid, the viscosity of which is to be measured, is injected, and a second fluid inlet portion in which a reference fluid having a standard viscosity is injected; a connection pipe configured to connect the first fluid inlet portion to the second fluid inlet portion and form a passage for the fluid, the viscosity of which is to be measured, and the reference fluid; a plurality of counting channels in communication with the connection pipe at a predetermined distance to be filled with the two fluids flowing along the passage, respectively; and a boundary surface measuring unit configured to count the counting channels filled with the two fluids, respectively. | 02-14-2013 |
| 20130233059 | RHEOMETRY INSTRUMENT UTILIZING SURFACE ACOUSTIC WAVES - A capillary break-up extensional rheometry (Ca BER) instrument including: opposing plates between which a capillary fluid bridge can be formed; and a surface acoustic wave (SAW) actuator having a working surface located on one of the plates, wherein when the test fluid is applied to the working surface of the SAW actuator, and the SAW actuator is energised, a said liquid bridge of the test fluid is produced between the plates. | 09-12-2013 |
| 20160103053 | METHOD AND DEVICE FOR DETERMINING THE FILLING QUALITY OF A FREQUENCY OSCILLATOR - A method determines the filling quality of a frequency oscillator where a measured fluid is passed through an oscillator tube. The relationship between the viscosity-dependent density of the measured fluid and the quality and/or attenuation of the oscillator tube is determined. The relationship between the dynamic viscosity and the attenuation and/or quality of the measured fluid is determined, and these values are used to create a calibration table that reproduces the functional relationship between a parameter relevant for the quality and/or the attenuation of the frequency oscillator and the viscosity of the measured fluid. An independent measuring apparatus determines a measured value for the dynamic viscosity of the measured fluid. The obtained measurement value for the viscosity coincides in the calibration table with a specific function value, and the result of this comparison with respect to the presence of any filling errors is used to determine a possible filling error. | 04-14-2016 |
| 073540050 | Plural tubes | 3 |
| 073540060 | By pressure measuring | 3 |
| 20140060162 | MODULAR CAPILLARY BRIDGE VISCOMETER - A capillary bridge viscometer ( | 03-06-2014 |
| 20140144214 | BALANCED CAPILLARY BRIDGE VISCOMETER - A capillary bridge viscometer, comprises an input port (flow in) an output port (flow out) a first capillary tubing arm (R1) in a first hydraulic path between the input port and a first differential detection point (DP+), a second capillary tubing arm (R3) in a second hydraulic path between the first differential detection point (DP+) and the output port (flow out), a third capillary tubing arm (R2) in a third hydraulic path between the input port (flow in) and a second differential detection point (DP−), a fourth capillary tubing arm (R4) in a fourth hydraulic path between the second differential detection point (DP−) and the output port (flow out), an adjustable mechanical flow restrictor ( | 05-29-2014 |
| 20140230527 | IMAGING MICROVISCOMETER - In one general aspect, a capillary viscometer is disclosed that includes a source of fluid pressure, a pressure transducer responsive to the source of fluid pressure, and a first capillary tube having an inside volume that is hydraulically responsive to the source of fluid pressure. A two-dimensional array of optical detectors is positioned proximate the first capillary tube with a first plurality of its detectors optically responsive to the inside volume of the first capillary tube and including an image data output. An acquisition driver circuit is responsive to the image data output of the two-dimensional array to acquire a series of successive images of the inside volume of the first capillary tube. Viscosity computation logic is responsive to the acquisition driver circuit and the pressure transducer, and operative to compute the viscosity of the fluid from pressure values received from the pressure transducer and the succession of images of the inside volume of the first capillary tube. | 08-21-2014 |
| 073540070 | By time interval of travel or flow rate measuring | 7 |
| 20080223114 | ENGINE OIL VISCOSITY DIAGNOSTIC SYSTEMS AND METHODS - An engine oil viscosity measurement system is provided. The system includes: a solenoid response module that determines an actual response time based on a position signal; an expected response module that determines an expected response time based on a system voltage and engine oil temperature; and a diagnostic module that diagnoses viscosity of the engine oil based on the actual response time and the expected response time. | 09-18-2008 |
| 20090320568 | METHOD AND APPARATUS FOR MEASURING VISCOSITY AND SURFACE TENSION - Methods and apparatus for measuring viscosity and/or surface tension of a liquid are described in which droplets are formed at a needle or pipette containing a sample of the test liquid and a size-related characteristic of the droplets such as droplet size, volume, diameter, or weight of the test liquid are measured by means of by capturing an image of the droplets and obtaining the size-related characteristic from the captured image. Subsequently or previously, a volume of the same sample of the test liquid is drained from the needle or pipette under pump pressure or a hydrostatic pressure, and an elution time is measured. The method and apparatus allows or includes determining the viscosity from the elution time, and determining the surface tension from the viscosity and the size-related characteristic of the droplet such as droplet size, volume, diameter, or weight of the test liquid. | 12-31-2009 |
| 20100058839 | Viscometer with integral sample retention reservoir - A viscometer having a substantially horizontal reservoir including a trap for retaining a sample indefinitely in the reservoir. A substantially vertical measuring tube disposed perpendicularly to the substantially horizontal reservoir and depends substantially upwardly from the reservoir. A junction interconnects the trap, a generally downwardly projecting fill tube, and a generally upwardly projecting vent tube. | 03-11-2010 |
| 20140123734 | KINEMATIC VISCOMETER AND METHOD - A viscometer assembly includes a first plate with a rail configured to constrain fluid thereon between its edges by surface tension. A second opposing plate has a surface spaced from the rail by a predefined gap of constraining fluid to the rail by surface tension when the rail is inclined and gravity pulls the fluid along the rail. The kinematic viscosity of the fluid is determined as a function of the predetermined gap and the time it takes the fluid to flow along the rail. | 05-08-2014 |
| 20140216140 | CAPILLARY MICROVISCOMETER - Low-cost and easily-operated microviscometer suitable for medical diagnosis clinical studies and other fluid tests. The equipment consists of a microchannel ( | 08-07-2014 |
| 073540080 | Including a photocell | 2 |
| 20110214486 | METHOD FOR MEASURING THE FLOW PROPERTIES OF A POORLY FLOWING MATERIAL - Method and device for measuring the flow properties of a poorly flowing material. The material is placed in a measuring reservoir ( | 09-08-2011 |
| 20150377758 | IMAGING MICROVISCOMETER - A viscometer, comprising: a source of fluid pressure, a tube, an array of optical detectors, an acquisition driver circuit and viscosity computation logic. The tube has an inside volume that is hydraulically responsive to the source of fluid pressure. The array of optical detectors is positioned along a length of the first tube with a plurality of its detectors optically responsive to the inside volume of the first tube and including an image data output. The acquisition driver circuit is responsive to the image data output of the first array to acquire a series of successive images of the inside volume of the first tube. The viscosity computation logic is responsive to the acquisition driver circuit and operative to compute the viscosity of a fluid flowing along the first tube from the series of images of the inside volume of the first tube. | 12-31-2015 |
| 073540090 | By pressure measuring | 4 |
| 20090266149 | Differentiating Between Abnormal Sample Viscosities and Pipette Clogging During Aspiration - A method for differentiating between a liquid sample having clogs therein and a liquid sample having an abnormally elevated viscosity during a liquid aspiration process by relating the ratio between the maximum negative pressure during aspiration and an equilibrium pressure prior to dispensation to viscosity. | 10-29-2009 |
| 20090293594 | System and Method for Estimating Apparent Viscosity of a Non-Newtonian Fluid - Method and apparatus are disclosed for estimating an apparent viscosity of a non-Newtonian fluid. The results may be used for selecting equipment for pumping systems. | 12-03-2009 |
| 20120247190 | RHEOMETER - A rheometeris disclosed for determining flow characteristics of a fluid. The rheometer comprises a circuit in which the fluid is arranged to flow. The circuit comprises a duct and a plurality of flow elements, each comprising a flow environment arranged in fluid communication with the duct. The flow environment of each element is arranged to convey fluid from an up-stream position to a downstream position of the respective flow element. The rheometer further comprises pressure sensing means arranged to determine fluid pressure at the upstream position and the downstream position of each of the plurality of flow elements. At least two of the plurality of flow elements comprise different flow environments for the fluid such that the rheometer can determine the flow characteristics of the fluid at a particular instant in time. | 10-04-2012 |
| 20130104630 | AUTOMATED CAPILLARY VISCOMETER | 05-02-2013 |
