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| Number | Title | Issue Date |
| 7603915 | Force balanced impeller flow meter for mass flow rate control A force balanced mass flow meter is disclosed that includes a cylindrical sensor housing having an interior bore, an impeller body supported for axial rotation within the interior bore of the sensor housing, and including structure for converting fluid inertia into ... | 10/20/2009 |
| 7351603 | Process of making a microtube and microfluidic devices formed therewith A process for producing a tube suitable for microfluidic devices. The process uses a uniformly-doped first material having a first portion into which a channel is etched partially through the first material between second and third portions of the first material. Th... | 04/01/2008 |
| 7347223 | Pipe flow stabilizer A fluid flow stabilizer for use in a flow of fluid in a conduit between a source of turbulence and a fluid control device. The stabilizer comprises a fluid conduit section having a first end with a mounting arrangement for mounting the first end to the fluid conduit... | 03/25/2008 |
| 7282329 | Suspended microchannel detectors An apparatus for detecting an analyte in solution that has a suspended beam containing at least one microfluidic channel containing a capture ligand that bonds to or reacts with an analyte. The apparatus also includes at least one detector for measuring a change in ... | 10/16/2007 |
| 7228735 | Fluid sensing device with integrated bypass and process therefor A micromachined fluid sensing device and a method for its fabrication. The sensing device incorporates a bypass passage, preferably an integral bypass passage within the device, that enables a volume of fluid to be delivered to the device, with a limited portion of ... | 06/12/2007 |
| 7059176 | Resonant tube viscosity sensing device A method and device for assessing the viscosity of a fluid. The method and device utilize a tube with a vibrating freestanding portion into which the fluid is introduced, and relies on sensing the influence that the fluid has on the vibrational movement of the tube ... | 06/13/2006 |
| 6942750 | Low-temperature patterned wafer bonding with photosensitive benzocyclobutene (BCB) and 3D MEMS (microelectromechanical systems) structure fabrication A method of low-temperature (150-300° C.) patterned wafer bonding of complex 3D MEMS comprising providing a first pre-processed wafer having a first surface and a second pre-processed wafer having a second surface. Photosensitive benzocyclobutene (BCB) polymer is t... | 09/13/2005 |
| 6942169 | Micromachined lysing device and method for performing cell lysis A method and device for performing lysing on a cell-containing fluid, in which the fluid flows through a vibrating micromachined tube to physically rupture the cell walls (mechanical lysis), and/or to mix, agitate or homogenize the fluid during chemical lysis, and/o... | 09/13/2005 |
| 6939632 | Thermally efficient micromachined device A micromachined device for efficient thermal processing at least one fluid stream includes at least one fluid conducting tube having at least a region with wall thickness of less than 50 μm. The device optionally includes one or more thermally conductive structures... | 09/06/2005 |
| 6932114 | Fluid delivery system and method A fluid delivery system capable of delivering a precise amount of fluid and monitor certain properties of the fluid so that the correct fluid is safely delivered to its intended destination. The system makes use of a flow sensor comprising a freestanding tube portio... | 08/23/2005 |
| 6874372 | Device for measuring the flow rate of fluids The device comprises a tubular stator intended to be fixed in a pipe, so as to be traversed, in use, by said stream of fluid, and in which there is axially mounted a rotor which has a central hub from which extends a plurality of blades and which is capable of being... | 04/05/2005 |
| 6535826 | Mass flowmeter methods, apparatus, and computer program products using correlation-measure-based status determination Motion signals representing motion of a conduit of a mass flowmeter are mode selective filtered to generate a plurality of mode selective filtered motion signals such that the plurality of mode selective filtered motion signals preferentially represent mo... | 03/18/2003 |
| 6477901 | Micromachined fluidic apparatus Micromachine fluidic apparatus incorporates a free-standing tube section and electrodes to actuate or control the movement of the tube section, or to sense the movement of the tube section, or both. Electronic circuitry, which may be disposed on the same ... | 11/12/2002 |
| 6249752 | Vibrating conduit parameter sensors, operating methods and computer program productors utilizing real normal modal decomposition A plurality of motion signals is received representing motion at a plurality of locations of a vibrating conduit containing material. The received plurality of motion signals is processed to resolve the motion into a plurality of real normal modal compone... | 06/19/2001 |
| 5687100 | Vibrating tube densimeter A Coriolis effect densimeter which produces density output data of improved accuracy by embodying the principal that the natural frequency of a vibrating tube filled with material decreases with an increase in the material mass flow rate. High accuracy ou... | 11/11/1997 |
| 5623103 | Method and apparatus for measuring fluid flow characteristics The parameters of flowing fluids are measured via the insertion of a two rotor assembly into the flowing fluid, the rotors adapted to rotate at different free running speeds, and being coupled such that the rotors share a common axis, and such that an ang... | 04/22/1997 |
| 5604316 | Multiple phase coriolis mass meter A Coriolis mass flow meter that measures total mass flow of multi phase fluid mixtures of gases and liquids in any proportion even with slippage occurring among the various phases. The device includes a rotating member made up of a plurality of flow condu... | 02/18/1997 |
| 5392655 | Optical pickup and signal analyzing system for mass flowmeters The impeller and drum of a motorless in-line mass flowmeter are constructed with small optical targets having high reflectivity. Light is pulsed toward the path of rotation of the targets through optical fibers. The pulse width is small in comparison to t... | 02/28/1995 |
| 4864869 | Flowmeter with faraday effect optical switch readout A flowmeter with an optical pick-off includes a turbine and a swirl generating impeller having magnets mounted on their periphery. Positioned on the exterior of the flowmeter housing in line with the magnets are monolithic Faraday effect optical switches.... | 09/12/1989 |
| 4858474 | Angular momentum mass flowmeter with optical pickoff An angular momentum mass flow meter with an optical fiber readout extending into and out of the flowmeter housing.... | 08/22/1989 |
| 4468972 | Flow meter with a motor driven impeller A liquid meter including a freely rotatable impeller driven by a constant speed drive. Liquid to be metered is introduced as a flow against, and accelerated by, the impeller. The energy necessary to accelerate the liquid is monitored to determine liquid f... | 09/04/1984 |
| 4438648 | Differential mass flowmeter A flowmeter is provided for receiving a plurality of fluid streams and providing signals representative of the mass flow rate of each stream and the differential mass flow rate of any selected pair of the streams. A housing defines a flow channel to accom... | 03/27/1984 |
| 4012957 | Shrouded flowmeter turbine and improved fluid flowmeter using the same A fluid flowmeter, of a type including a housing and a fluid flow measurement assembly rotatable therein which is driven by a turbine, is described in detail to illustrate a limitation on low flow rate operational capability and a related problem of conta... | 03/22/1977 |
| 3958447 | Mass flowmeter A flowmeter in which first and second sets of electrical signals representative, respectively, of the mass flow rate and the volumetric flow rate of a fluid are used to generate an adjusted mass flow rate signal which is representative of the mass flow ra... | 05/25/1976 |
