Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 8100005 | Permeate flow distribution measurement in a membrane filtration system The present invention refers to a flow distribution measuring system comprising a sensor matrix adapted to measure the flow distribution of permeate passing through a membrane filtration arrangement and also refers to a cap comprising such a sensor matrix; wherein t... | 01/24/2012 |
| 7836760 | Method and device for the assessment of fluid collection networks The improved monitoring device includes a data acquisition device with an accelerometer inside a bendable tube. One end of the tube is connected to a pole that may be secured to the top of a sewer manhole, while the other end is submerged in a fluid flow. The tilt, ... | 11/23/2010 |
| 7726185 | System and method for measuring flow in a pipeline A system is provided for measuring flow in a pipeline which, in use, carries a stratified flow of a first liquid and a second, denser liquid. The system comprises: a section of the pipeline in which the stratified flow is uphill; a section of the pipeline in which t... | 06/01/2010 |
| 7360413 | Wireless water flow monitoring and leak detection system, and method A wireless water flow monitoring and leak detection system and method are provided. The system includes a base station, a memory, and a central processing unit configured to control the operation of the system and to analyze stored data. A plurality of highly-sensit... | 04/22/2008 |
| 7357021 | Methods of monitoring downhole conditions Methods of monitoring various downhole conditions are described, including a system for determining and/or identifying the flow of fluid in a well, determining sand production in a well, identifying localized events in a well, determining the apparent flow velocity ... | 04/15/2008 |
| 7267014 | Meter register having an encoder A water meter register has a shaft for rotating an energy passing wheel having a high transmission portion and a low transmission portion. Energy rays are directed toward one side of the wheel toward a pair of detectors mounted on the other side of the wheel. Each o... | 09/11/2007 |
| 7266467 | Method to calibrate hydraulic flow valves in situ A method for performing system characterization in situ for a system comprising a actuator controlled by a proportional controller. The system includes a quasi-linear region characterized by a slope of the system response and by a delay in the quasi-linear region of... | 09/04/2007 |
| 7258024 | Simplified fluid property measurement A process fluid measurement system provides a first measurement relative to process fluid flowing in a pipe. An additional measurement of process fluid flow velocity in the pipe is combined with the first measurement to provide a simplified indication of mass fluid ... | 08/21/2007 |
| 7257985 | Apparatus and method for real time determination of density and related parameters in manufacturing processes Methods and apparati for measuring entrained gas content. One of the disclosed apparatus embodiments includes a chamber and piping for process fluid, the piping including two different sectors each comprising a density and temperature gauge having a pressure gauge l... | 08/21/2007 |
| 7253743 | Techniques for identifying when to change an air filter A method is performed in an electronic system having (i) hardware configured to perform electronic operations and (ii) an air filter configured to remove contamination from an air stream that cools the hardware. The method, which identifies when to change an air fil... | 08/07/2007 |
| 7249503 | Tube and die interface for liquid flow sensing through the tube A thermal sensor includes a die having a surface formed to accept the outer surface of tubing; a molded plastic part located on the die surface, said molded plastic part including flexible portions having a surface adapted to engage the bottom half of the circumfere... | 07/31/2007 |
| 7246530 | Flow sensor and method for measuring a flow rate component of a fluid containing electrically charged elements The invention relates to measurement of a fluid flow, wherein a flow rate component of the fluid is measured along a selected direction. A magnetic field whose polarity varies over time is applied to the fluid, which presumed to contain electrically charged elements... | 07/24/2007 |
| 7216534 | Substrate processing apparatus and thermal type flowmeter suitable to the same In a thermal type flowmeter 60, a heating/heat-sensitive coil 64 which is shaped as a coil is fit close into an approximately central portion of a duct pipe 63. A flow rate computing circuit 65 supplies electric power to the heating/heat-... | 05/15/2007 |
| 7204264 | High pressure capillary micro-fluidic valve device and a method of fabricating same A freeze-thaw valve and a method of micro-machining the freeze-thaw valve is provided and includes a valve housing, wherein the valve housing defines a housing cavity and includes a housing inlet, a housing vent, a capillary tubing inlet and a capillary tubing outle... | 04/17/2007 |
| 7191638 | Device for determining and/or monitoring at least one physical parameter and having a piezo-drive for oscillation-excitation and -detection A device for determining and/or monitoring at least one physical parameter of a medium, having at least one mechanically oscillatable unit and at least one drive-/receive unit. The drive-/receive unit excites the oscillatable unit to oscillate, or, it receives the o... | 03/20/2007 |
| 7174270 | Rotation angle detecting apparatus and method of detecting rotation angle A rotation angle detecting apparatus having a reference signal-generating device that generated a reference signal; a rotation angle detecting section that generated an output signal in response to the reference signal; a feedback control section that determines a r... | 02/06/2007 |
| 7134321 | Fluid gauge proximity sensor and method of operating same using a modulated fluid flow A system and method that use a fluid gauge proximity sensor. A source of modulated unidirectional or alternating fluid flow travels along at least one path having a nozzle and a flow or pressure sensor. The fluid exists at a gap between the nozzle and a target. The ... | 11/14/2006 |
| 7117048 | Safety controller with safety response time monitoring A safety controller having a total worst case propagation delay, exceeding the required propagation delay required by a safety process, may be used to control the safety process by monitoring actual delays in signal processing in the safety controller and moving to ... | 10/03/2006 |
| 7077012 | Wedge and wedge unit for use in ultrasonic doppler flow meter A wedge unit according to the present invention is used for an ultrasonic Doppler flow meter, being mounted on the outer wall of a pipe in which a fluid flows, supplying an ultrasonic wave to the fluid, receives the reflected wave and supplies the reflected wave to ... | 07/18/2006 |
| 7073394 | Scalable averaging insertion vortex flow meter An insertion vortex flow meter for measuring a flow rate of a process fluid in a pipe has a mounting assembly, a shedding bar and a sensor assembly. The mounting assembly is attached to a surface of the pipe adjacent an opening in a side wall of the pipe. The sheddi... | 07/11/2006 |
| 7058549 | Apparatus and method for measuring unsteady pressures within a large diameter pipe An apparatus 10 is provided that includes a spatial array of at least two unsteady pressure sensors 18–21 placed at predetermined axial locations x1–xN disposed axially along a pipe 14 for measuring at least one paramet... | 06/06/2006 |
| 7017388 | Determination of gas-free densities and relative amounts of gases in liquids in manufacturing processes Improved control of continuous processes that handle liquids. Data generated by this invention is used to control gas contents of liquids within optimum ranges, for instance in paper coating processes and in the manufacture of food products (ketchup), personal care ... | 03/28/2006 |
| 7013738 | Flow sensor A flow sensor is provided with an obstruction (8) projecting into a flow and at least one measuring probe (10) for measuring a vortex produced by the obstruction (8). The measuring probe (10) includes at least one membrane (12) and... | 03/21/2006 |
| 6992590 | Systems and methods for sensing a fluid supply status A system that includes a container containing a fluid, a fluid line coupled with the container, and a pump configured to pump the fluid out of the container through the fluid line. The system further includes a sensor that includes a wireless transmitter. The sensor... | 01/31/2006 |
| 6973841 | High pressure retention vortex flow meter with reinforced flexure A vortex flow meter for measuring fluid flow has a conduit for carrying a fluid. A region of reduced thickness is formed in a portion of the conduit. A shedding bar disposed in the conduit is coupled to the region of reduced thickness and is configured to apply a ro... | 12/13/2005 |
| 6955095 | Accurate cryogenic liquid dispenser A system for dispensing cryogenic liquid to a use device includes a bulk storage tank providing LNG to a sump containing a meter submerged in LNG. A temperature probe is also submerged in the LNG. A dispensing line is positioned between the meter and dispensing hose... | 10/18/2005 |
| 6935189 | Multiphase flow meter using multiple pressure differentials A flowmeter, and a method of, measuring the flow of a multi-phase fluid is described. The flowmeter has a first pressure sensor located in a conduit for measuring a first pressure differential at a first location and a second response sensor spaced along the conduit... | 08/30/2005 |
| 6907779 | Continuous flow measurement recorder and recording method A continuous flow measurement recorder is provided for making water flow measurements in an open channel. An ultrasonic sensor obtains pressure head measurements upstream from a flume or weir located in the open channel. A central processing unit receives the head m... | 06/21/2005 |
| 6904386 | Control system and method for detecting plugging in differential pressure cells A method and control system is disclosed that monitors the high frequency or commonly referred to as the “noise” component of a measurement signal to detect plugging conditions in fluid flow systems monitored by DP-cell based sensors. This high frequency compone... | 06/07/2005 |
| 6886409 | System for controlling the flow of a fluid through a substrate A system is described for controlling the flow of a sample fluid through a substrate having first and second surfaces and at least one area with a plurality of through-going capillary channels. The system comprises a housing having a chamber for receiving the substr... | 05/03/2005 |
| 6832166 | Method and system for analyzing the effect of inflow and infiltration on a sewer system A method and system for determining the effect of precipitation on flow within a sewer network includes identifying a modeled response of the sewer to a precipitation event. Once the modeled response is identified, scaled responses to future precipitation events may... | 12/14/2004 |
| 6758101 | Steam to carbon ratio control in steam reforming of hydrocarbons A mass flowmeter system for use in steam reformation of hydrocarbons includes a Coriolis flowmeter in a hydrocarbon feedstock line. The feedstock carbon content is estimated by close approximation, which facilitates selective control operations governing the relativ... | 07/06/2004 |
| 6732594 | Accurate cryogenic liquid dispenser A system for dispensing cryogenic liquid to a use device includes a bulk storage tank providing LNG to a sump containing a meter submerged in LNG. A temperature probe is also submerged in the LNG. A dispensing line is positioned between the meter and dispensing hose... | 05/11/2004 |
| 6721674 | Method and apparatus for in-situ calibration of quantity measurement of a fluid flowing in a channel A method and apparatus for in-situ calibration of quantity measurement of a fluid flowing in a channel, in which a device for measuring the volume of the fluid is disconnected from the fluid flow, measuring fluid is accumulated in a pre-determined amount on site of ... | 04/13/2004 |
| 6701261 | Method and system for analyzing the effect of inflow and infiltration on a sewer system A method and system for determining the effect of precipitation on flow within a sewer network includes identifying a modeled response of the sewer to a precipitation event. Once the modeled response is identified, scaled responses to future precipitation... | 03/02/2004 |
| 6681644 | Flowmeter for measuring extremely low fuel mass flows A flowmeter capable of real-time fuel mass flow measurement involving extremely low fuel mass flow quanta. The flowmeter includes a dual flow path conduit system, a flow control for alternating the selection of one flow path exclusive of the other flow pa... | 01/27/2004 |
| 6637263 | Flow divider The invention relates to a flow divider and a process for dividing a fluid flow into a number of fluid flows, in particular in analytical and/or preparative fluid measurement technology and/or in micro-fluid systems. The flow divider exhibits at least one... | 10/28/2003 |
| 6595048 | Accurate cryogenic liquid dispenser A system for dispensing cryogenic liquid to a use device includes a bulk storage tank providing liquid natural gas (LNG) to a sump containing a meter submerged in LNG. A temperature probe is also submerged in the LNG. A dispensing line is positioned betwe... | 07/22/2003 |
| 6424923 | Method for computing three dimensional unsteady flows by solution of the vorticity equation on a Lagrangian mesh A method for computing three dimensional unsteady flows about an object. An allowable error is established for the vorticity term calculations, and object geometry is provided giving surface points on an object and a region of interest. A mesh is establis... | 07/23/2002 |
| 6397687 | Water usage monitor and regulator A water monitoring and regulation apparatus comprising two vanes connected to two flow meters, a timer, a main gear connected to the two vane shafts, a timer gear connected to the timer, a shut off mechanism, a manual reset and an automatic reset when the... | 06/04/2002 |
