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| Number | Title | Issue Date |
| 7669484 | Device for evaluating drag reduction A system for screening a drag reduction agent that includes at least one pressure vessel, comprising: at least one container having an outlet; a first tube fluidly connected with the outlet of the at least one container; a second tube fluidly connected with the firs... | 03/02/2010 |
| 7328624 | Probe for measuring parameters of a flowing fluid and/or multiphase mixture A probe 10,170 is provided that measures the speed of sound and/or vortical disturbances propagating in a single phase fluid flow and/or multiphase mixture to determine parameters, such as mixture quality, particle size, vapor/mass ratio, liquid/vapor ratio, ... | 02/12/2008 |
| 7188531 | Pressure gauge for use with sanitary conduit A standard industrial pressure gauge is adapted for a sanitary conduit that has been provided with a tubular stub for mounting the gauge. A cylinder has a disk flange that mates with an upper flange of the tubular stub. A cap closes off the top of the cylinder, and ... | 03/13/2007 |
| 7117732 | Fuel gauge for fuel cartridges Fuel gauges for fuel supplies for fuel cells are disclosed. Each fuel gauge has a property that is readable by an electrical circuit. These properties are related to the remaining fuel in the fuel supplies. These properties include, but are not limited to, electrica... | 10/10/2006 |
| 7115107 | Blood circuit for a dialysis machine and corresponding dialysis machine A blood circuit (1) for a dialysis machine is made form plastic material and is provided with a metallic plate (30), which is applied to an external face of the blood circuit (1) and is connectable to a voltage generator (34) in such a wa... | 10/03/2006 |
| 7044237 | Drilling system and method A closed-loop circulating system for drilling wells has control of the flow rates in and out of the wellbore. Kicks and fluid losses are quickly controlled by adjusting the backpressure. Kick tolerance and tripping margins are eliminated by real-time determination o... | 05/16/2006 |
| 7000467 | Method, system and program product for monitoring rate of volume change of coolant within a cooling system Method, system and program product are provided for monitoring coolant within a cooling system designed to provide system coolant to one or more electronics subsystems. The monitoring technique includes employing at least one pressure transducer to obtain multiple p... | 02/21/2006 |
| 7000468 | Electronic level gauge Disclosed is a fluid level gauge for sensing the level of fluid in a dispenser. The level gauge includes an inlet port communicating with the fluid and a check valve in communication with the inlet port. The check valve includes a membrane which allows air to pass. ... | 02/21/2006 |
| 6938635 | Level switch with verification capability The present invention comprises a novel level switch which may be employed to detect liquid levels within a process vessel. The level switch of the present invention is self validating so that manual testing is not required in order to ensure proper operation and sw... | 09/06/2005 |
| 6854340 | Flow measuring device A flow measuring device comprising a housing in which a principal flow duct extends in which pressure drop producing means are located responsible for a pressure drop of the pressure flowing through and in the wall of the duct the tapping openings of a plurality of ... | 02/15/2005 |
| 6666081 | Sensor probe An elongate probe suitable for measuring one or more properties of a stream of fluid, the probe having an external planar sensing surface, which in use is exposed to the stream of fluid, at a longitudinal end thereof and comprising a plurality of sensors ... | 12/23/2003 |
| 6606905 | Liquid level and weight sensor A liquid level and weight sensor utilizes a pressure sensor of any type positioned at the base of the liquid or weight. A second pressure sensor is positioned external to the liquid or weight to measure the ambient pressure. Ambient pressure is subtracted... | 08/19/2003 |
| 6276195 | Three capillary flow-through viscometer A method and apparatus for measuring the viscosity of a sample solution which comprises an input tube for transporting a sample solution flow towards a splitter for diverting input flow into two distinct flow streams where three capillary tubes are locate... | 08/21/2001 |
| 6244115 | Flow meter for monitoring liquid flow at low or intermittent rates A flow meter for monitoring liquid flow at low or intermittent rates, such as waste water gravity flow from a reverse osmosis system. Water flow from the system enters a meter chamber vented to atmosphere. Water drainage from this chamber is adjusted to m... | 06/12/2001 |
| 6240787 | Method of determining fluid inflow rates A method is provided for determining the actual inflow rates of gas and liquid into a wellbore from a reservoir. The wellhead is first closed and the wellhead pressure is measured over time. For a briefly period, gas is flowed from the wellhead and the we... | 06/05/2001 |
| 5802910 | Measuring system for liquid volumes and liquid levels of any type The apparatus measures the liquid volume of a liquid or liquids held in one or more containers. This apparatus has no moving parts and includes an open-ended dynamic pressure tube standing in each container with its open tube end at the lowest point of th... | 09/08/1998 |
| 5604315 | Apparatus using a feedback network to measure fluid pressures An apparatus is disclosed for measuring the pressure of a liquid column enclosed within a pressurized tank or cell, and for deriving the height and/or density of the liquid column based on the measured pressure. The apparatus includes a first pressure sen... | 02/18/1997 |
| 5526680 | Hydraulic press flow viscometer A hydraulic press flow viscometer is provided for spray testing viscous materials for high pressure applications using a relatively small sample size. A hydraulic press forces the sample from its container to a spray assembly. The spray testing system is ... | 06/18/1996 |
| 5520969 | Method for in-situ liquid flow rate estimation and verification The flow of a liquid reagent gas into a vapor deposition process chamber is adjusted in response to control information provided by a process controller. The controller executes a prescribed mathematical algorithm which utilizes first and second steady-st... | 05/28/1996 |
| 5161483 | Apparatus for determining the yield of milk by a milking machine The invention relates to animal-milking machinery. The apparatus for determining the yield of milk by a milking machine, comprises a discrete sensor including a reception chamber and a measurement chamber. The reception chamber receives a float element mo... | 11/10/1992 |
| 4747062 | Method and apparatus for detecting the level of a liquid in a tank The present invention provides for a process and apparatus for detecting the level of a liquid in a vessel. The method involves sensing the pressure head of the liquid level in column disposed with the vessel wherein the column liquid level has been adjus... | 05/24/1988 |
| 4715232 | Flow measuring system with backflow preventing means A flow measuring system for flowing liquids utilizing a pitot rod, snubbing vessels and a manometer to determine mean flow velocities and profiles. The snubbing vessels effectively prevent any back flow of indicating fluid into the main pipeline conduit.... | 12/29/1987 |
| 4395232 | Oven control apparatus Disclosed is an apparatus useful in controlling the operation of ovens of the type typically associated with baking food products. Broadly, the apparatus permits the linear display of heat input to one or more zones of an oven responsive to gas flow. Heat... | 07/26/1983 |
| 4231261 | Fluid pressure measuring device A conduit conducting a dirty gas is connected by one line to an interface device connected by another line to a pressure measuring device having a cavity and a diaphragm defining one wall of the cavity. The interface device has a pair of chambers in fluid... | 11/04/1980 |
