Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 8176796 | Ultrasound multiphase fraction meter and method for determining phase fractions in a multiphase fluid An apparatus and method to determine fractions of various phases in a multiphase fluid. The apparatus includes main body including an interior configured receive a multiphase fluid and an exterior. The apparatus senses fluid pressure of multiphase fluid received in ... | 05/15/2012 |
| 7350423 | Real time usage monitor and method for detecting entrapped air A dispensing system for feeding paste through a screen onto a workpiece monitors the position of a piston applying pressure to the paste with a linear variable differential transformer and sets limits on the slope of the piston displacement is a measure of the feed ... | 04/01/2008 |
| 7340353 | Dual function flow measurement apparatus having an array of sensors A dual function flow measurement apparatus is provided that combines the functionality of an apparatus that measures the speed of sound propagating through a fluid flowing within a pipe, and measures pressures disturbances (e.g. vortical disturbances or eddies) movi... | 03/04/2008 |
| 7295933 | Configurable multi-function flow measurement apparatus having an array of sensors A configurable multi-function flow measurement apparatus is provided that can selectably function to measure the speed of sound propagating through a fluid flowing within a pipe and/or to measure pressures disturbances (e.g. vortical disturbances or eddies) moving w... | 11/13/2007 |
| 7249525 | Apparatus for measuring parameters of a fluid in a lined pipe An apparatus for measuring a parameter of a fluid passing through a pipe comprises a spatial array of pressure sensors disposed at different axial locations along the pipe between a sleeve within the pipe and an inside surface of the pipe. Each of the pressure senso... | 07/31/2007 |
| 7240537 | Method for the determination of the wall friction profile along pipes by pressure transients measurements The present invention deals with a method which allows to determine the wall friction profile along pipes transporting liquids, particularly petroleum industry liquids, by measuring the pressure transients induced by fast changes in the flow rate. This method is app... | 07/10/2007 |
| 7150202 | Method and apparatus for measuring characteristics of core-annular flow An apparatus and method are disclosed wherein at least one parameter associated with a core-annular flow (CAF) in a pipe is measured by sensing unsteady pressures associated with undulations formed at the interface of a core region and an annular region in the CAF a... | 12/19/2006 |
| 7139667 | Method for calibrating a volumetric flow meter having an array of sensors A method and apparatus are provided for calibrating a flow meter having an array of sensors arranged in relation to a pipe that measures a flow rate of a fluid flowing in the pipe. The method features the step of calibrating the flow rate using a calibration correct... | 11/21/2006 |
| 7127360 | Dual function flow measurement apparatus having an array of sensors A dual function flow measurement apparatus is provided that combines the functionality of an apparatus that measures the speed of sound propagating through a fluid flowing within a pipe, and measures pressures disturbances (e.g. vortical disturbances or eddies) movi... | 10/24/2006 |
| 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 |
| 6817252 | Piston position measuring device A measuring device is provided for determining a position of a piston contained within a hydraulic actuator as a function of a hydraulic fluid flow. The measuring device includes a bi-directional flow sensor positioned inline with the hydraulic fluid flow and a pist... | 11/16/2004 |
| 6807947 | Method and device for controlling fuel metering into an internal combustion engine A device and a method for determining a fuel pressure and/or an injected amount of fuel are described. A fuel injection unit meters the fuel to an internal combustion engine as a function of a first and a second trigger signal. The first trigger signal controls the ... | 10/26/2004 |
| 6725706 | Device and method for blowing down and measuring the back pressure of chemical reactor tubes A device for measuring the back pressure in chemical reactor tubes includes many automated features. Inflatable tube seals may be automatically inflated. The device may measure several tubes at once. It may transmit data electronically to a remote computer for analy... | 04/27/2004 |
| 6658946 | Method of detecting fluid flow through a conduit A sensor for detecting contact of a fluid delivery probe with a fluid surface and for detecting fluid flow through the probe includes a first electrode disposed along a fluid flow path of the probe upstream from a distal tip of the probe and a second elec... | 12/09/2003 |
| 6604054 | Method of detecting fluid flow through a conduit A sensor for detecting contact of a fluid delivery probe with a fluid surface and for detecting fluid flow through the probe includes a first electrode disposed along a fluid flow path of the probe upstream from a distal tip of the probe and a second elec... | 08/05/2003 |
| 6253624 | Friction flowmeter A pressure transmitter produces signals indicative of a flow in a pipe. The transmitter has a pressure sensor that is fluidly coupled to two ports in the pipe, and the pipe has a substantially constant cross-section between the two ports. Aspects of the i... | 07/03/2001 |
| 6026682 | Coolant safety system for automated welding apparatus In an automated welding machine, where a flow of liquid coolant is supplied to welding components on the machine from a source of coolant and then returned to the source of coolant, a safety system is provided that shuts down the flow of coolant in the ev... | 02/22/2000 |
| 5811674 | Coolant safety system for welding apparatus In an automated welding machine, where a flow of liquid coolant is supplied to welding components on the machine from a source of coolant and then returned to the source of coolant, a safety system is provided that shuts down the flow of coolant in the ev... | 09/22/1998 |
| 5755559 | Apparatus and method for pumping supercritical fluid and measuring flow thereof In a piston pump for pumping liquid carbon dioxide at a temperature below 30 degrees Fahrenheit and pressures at least as high as 7500 psi, the volume leaving the pump is determined by measuring only pressure or other parameter related to flow and movemen... | 05/26/1998 |
| 5753806 | Apparatus and method for determining the distribution and flow rate characteristics of an injection nozzle A plurality of piezoelectric sensors are disposed in a spatial array around the ports of an injection nozzle. Separate electrical signals proportional to the instantaneous momentum of fluid discharged from the injection nozzle and impacting on each of the... | 05/19/1998 |
| 5485850 | Monitor of low pressure intervals with control capabilities A monitor that provides data obtained from the detection of very low positive, negative, or differential pressures, and can be used to control devices in health care and industry. An example of its use in health care is as a respiration monitor providing ... | 01/23/1996 |
| 5142483 | Pressure regulating system for positive shut-off pressure controller A pressure controller rapidly, precisely sets and stabilizes the pressure in a test volume to a target pressure by opening a fast inlet solenoid valve or a fast outlet solenoid valve, and opening a slow inlet solenoid valve or a slow outlet solenoid valve... | 08/25/1992 |
| 4604902 | Means and techniques useful in mass flowmeters for multiphase flows A mixture of two materials flows through a first measuring station which includes a Venturi meter for obtaining and measuring a pressure difference Ɗp that is representative of mass flow rate of the mixture and velocity. The mixture then flows through a ... | 08/12/1986 |
