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Class 73/38 - Porosity or permeability


Subclass of Class 73 - Measuring and testing
Definition: Subject matter for determining through the direct application
No. of patents: 797
Last issue date: 04/23/2013


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NumberTitleIssue Date
8424367Systems and methods for measurement of gas permeation through polymer films
In accordance with one embodiment of the present disclosure, a system for determining the rate of gas permeation through a film is described. The system comprises a continuous flow permeation cell, a mass spectrometer, a test gas source, and a carrier gas source. Th...
04/23/2013
8418528Oil migration system
An apparatus and a system is provided that may be utilized to determine oil migration and oil displacement from a pre-oiled air filter. The present invention may also be utilized to determine if oil is displaced from the air filter onto a portion of the apparatus fo...
04/16/2013
8408046System and method for in line in situ validation of exhaust filters
A system for in line in situ validation of an air filter of an exhaust filter system including a scan head, a means for facilitating movement of said scan head in the XY plane, a means for externally controlling the movement of the scan head from outside the plenum ...
04/02/2013
8356510Formation core sample holder assembly and testing method
A core sample holder assembly for performing laboratory core flooding experiments with a core sample: a pressure chamber provided by a tubular hull made of a carbon fiber composite material and an aluminum liner, and a pair of disk...
01/22/2013
8333107Method for use of microdialysis
Very accurate measurements of mass transfer can be made rapidly by permitting diffusion of an agent desired to be measured into or out of a small, very precisely known volume of a microdialysis probe, then rapidly pumping or flushing (“pulsing”) the probe with a...
12/18/2012
8327688Gas permeation testing system
A system for the automated regulation of a gas permeation testing system is disclosed, wherein a control system in communication with a data processor facilitates more precise control of a pressurized fluid caused to flow through the gas permeation testing system.
12/11/2012
8322193Transdermal diffusion cell testing arrangements and methods
Transdermal diffusion cell testing vessel includes a container defining a chamber having an opening against which skin is placed, and a casing arranged partially around and spaced apart from part of the container to define a compartment therebetween. The chamber ret...
12/04/2012
8281644Hydrostatic tester
A hydrostatic tester is provided with an elevated test surface allowing tests to be made inside sleeves, pants legs or other hard to reach locations of completed garments. A constant force spring is engaged by way of a straight line clamp to apply pressure and maint...
10/09/2012
8272252Pore structure characterization of filtration cartridges at specific locations along cartridge length
A method for determining pore structure characteristics of a filtration cartridge includes the steps of placing a porometry test location isolating device in sealing contact with the filtration cartridge at a desired test location, increasing the porometer test gas ...
09/25/2012
8272251Method for testing separation modules
New methods and apparatus are described for assessing the integrity of a separation module or filtration system. A principle embodiment concerns use of a transient pulse of challenge species to probe a spiral wound module. The resulting time-dependent concentration ...
09/25/2012
8256268System and method for measuring porosity of high strength and high performance concrete using a vacuum-pressure saturation method
The method for measuring porosity of concrete is a vacuum pressure saturation-based method for calculating a porosity value of a sample of concrete. The method includes the steps of first drying a concrete sample and then making a first weight measurement of the con...
09/04/2012
8234909Method and apparatus for inspecting ceramic wall flow filters
Methods are disclosed for inspecting a cylindrical porous ceramic body by positioning a diffuser near, and spaced apart from, the first end of a ceramic body; flowing a tracer flow toward the diffuser, wherein a first portion of the tracer flow passes through the di...
08/07/2012
8225642Apparatus and method for condition monitoring of a component or structure
An apparatus (10) monitors the condition of a component (12) by measuring the conductivity to air flow of a sealed cavity (14) formed on the surface of the component (12). The apparatus (10) comprises an unregulated pressure source...
07/24/2012
8205483Residual life indicator
A residual life indicator for determining the residual life of a filter has a first sample filter with an inlet coupleable to an inlet of the filter whose residual life is to be determined, a second sample filter having an inlet coupleable to an outlet of the filter...
06/26/2012
8176769Fluid transportation by a plurality of particulates
Provided are apparatuses for measuring wetting, absorption, and/or other mechanisms of fluid transportation by a sample of particulates. The apparatus may include a container holding a fluid, a means for measuring fluid in the container, and a conduit having a fluid...
05/15/2012
8136386Determination of pore structure characteristics of filtration cartridges as a function of cartridge length
A method for determining pore structure characteristics of a filtration cartridge includes the steps of placing a porometry test location isolating device in sealing contact with the filtration cartridge at a desired test location, increasing the porometer test gas ...
03/20/2012
8136387Determination of pore structure characteristics of filtration cartridges as a function of cartridge length
A method for determining pore structure characteristics of a filtration cartridge includes the steps of placing a porometry test location isolating device in sealing contact with the filtration cartridge at a desired test location, increasing the porometer test gas ...
03/20/2012
8136388Determination of pore structure characteristics of filtration cartridges as a function of cartridge length
A method for determining pore structure characteristics of a filtration cartridge includes the steps of placing a porometry test location isolating device in sealing contact with the filtration cartridge at a desired test location, increasing the porometer test gas ...
03/20/2012
8117899Method and device for measuring the gas permeability through films and walls of containers
A device for measuring permeability of a gas sample through a thin film, or a wall, arranged as a membrane between a first chamber and a second chamber of a measurement cell is provided that includes, a pressure regulator, upstream from each inlet to the measurement...
02/21/2012
8113036Air velocity apparatus and system
An apparatus and a system is provided that may be utilized to determine air flow through an air filter and/or a plurality of air filters. The present invention utilizes a demonstration apparatus to illustrate the differences in air flow and air restriction between a...
02/14/2012
8079249Gas permeability measurement apparatus
Gas permeability measurement apparatus is an apparatus for measuring all kinds of continuous-porous materials, including wood, paper, wood-composites, wood plastic composites (WPC), minerals, polymer-based materials, minerals, ceramics, textiles and fabrics. The app...
12/20/2011
8074491Monitoring gas leakage rates from hermetically sealed devices
A method for monitoring a gas leakage rate from a hermetically sealed device, such as a hermetically sealed data storage device with an interior helium atmosphere. In some embodiments, a diffusion rate of inert gas from a hermetically sealed first device is monitore...
12/13/2011
8042382Device for measuring physical characteristics of a porous sample
Device for measuring physical characteristics of a porous sample by performing successive drainage and imbibition phases in the presence of a first electricity-conducting fluid and of a second fluid of lower density than the first fluid, by means of a centrifuge who...
10/25/2011
8028564Oil migration system
An apparatus and a system is provided that may be utilized to determine oil migration and oil displacement from a pre-oiled air filter. The present invention may also be utilized to determine if oil is displaced from the air filter onto a portion of the apparatus fo...
10/04/2011
8024960Method and device for evaluating flow parameters and electric parameters of porous medium
A method and device is disclosed for evaluating simultaneously, and with the same equipment, the electric resistivity and flow parameters of a porous medium, from experimental measurements obtained from at least one multi-flow type displacement experiment which has ...
09/27/2011
8024961Simultaneous normal and radial liquid permeameter
A permeameter including a fluid control chamber, a permeability specimen area, and a first outlet from the specimen area measuring fluid as a function of a normal permeability of at least one specimen in the specimen area and a second outlet from the specimen area r...
09/27/2011
8015857Method for measuring the gas permeability of containers and sealing members in general
A device that carries out a method for measuring permeability to a gas sample through a container (2) comprises an inlet duct for the gaseous carrier, in particular, nitrogen, both as inlet in the container (2) and as inlet in the chamber (1) an...
09/13/2011
8006543Device for measuring the permeation of a hollow body such as a container
Device for measuring the permeation of a hollow body provided with an opening such as a neck in particular, this device comprising a chamber in which the follow body is placed, on a support; this hollow body, when placed on its support, together with the chamber def...
08/30/2011
7937987Filter monitor-flow meter combination sensor
A method for monitoring a filter installed in a fluid system. The steps include providing a reference region in the fluid system, the region including a chamber having a known volume and releasing a fluid from the chamber configured to flow through the reference reg...
05/10/2011
7930926Determination of permeability from damping
Permeability of a fluid through a saturated material is determined by measuring the dynamic response of that saturated material to shaking vibrations and/or shear wave propagation, and then mapping the dynamic response (preferably, viscoelastic stiffness and damping...
04/26/2011
7918125Methods and devices to test diffusion rates of ocular drug delivery systems
Methods of detecting the discharge and uptake rates of ophthalmic lenses containing pharmaceutical agents are disclosed herein. ...
04/05/2011
7891234Multi-sensing device and method of operating
A multi-sensing device is provided which includes a first sensor for sensing a temperature of the fluid flowing through the filter element, a second sensor for sensing a pressure generated by the fluid flowing through the filter element; and an indicator for indicat...
02/22/2011
7882726Compression vacuapore for determination of pore structure characteristics of hydrophobic materials under compressive stress
A method for determining pore structure characteristics of hydrophobic porous materials includes placing a test sample of material in the sample chamber of a porosimetry apparatus, creating a partial vacuum and evacuating the sample chamber to remove air, creating a...
02/08/2011
7882727Method and apparatus for v-bank filter bed scanning
Embodiments of the invention generally related to a method and apparatus for scanning a v-bank filter. In one embodiment, an apparatus for scanning a v-bank filter includes a hollow body having first and second ends. An outlet, formed at the second end of the body, ...
02/08/2011
7818996High throughput screening for rapid development of membranes and membrane processes
The present invention provides a testing system allowing the simultaneous comparative evaluation of the behavior in a membrane process of two or more selected membranes (4). In a preferred embodiment said system allows the control of the hydrodynamics of the ...
10/26/2010
7805982Portable core flood apparatus for conducting on-site permeability measurements
A portable apparatus and method provide on-site permeability measurements of a core sample extracted from a subterranean reservoir. The portable apparatus is easily and conveniently transported to well locations for use on-site, thereby allowing the core sample to b...
10/05/2010
7793535Devices and methods to simulate an ocular environment
Methods and devices used to simulate the use of an ophthalmic lens contained in an ocular environment are disclosed herein. ...
09/14/2010
7770434System and method for in-process integrity test of a filter
The invention relates to a method for in-process integrity test of a filter. The method may comprise the steps of: coupling a gas source to an input side of a filter without removing the filter from a dispenser system, the gas source supplying a gas and controlling ...
08/10/2010
7765852Air flow nozzle for air flow meter
The aspects of the present invention provide for an apparatus for conveying air into foam so that the flow of air within the foam may be monitored to determine one or more characteristics of the foam. The apparatus includes a nozzle and a member having a substantial...
08/03/2010
7752888System for gas permeation testing
A system for measuring gas permeation through container walls is disclosed, wherein a pressure fluid is introduced into a container to be tested. Once the pressure fluid is introduced into the container, the pressure fluid is drawn out of the container and tested to...
07/13/2010
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