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| Number | Title | Issue Date |
| 7905142 | Servo type volumetric flowmeter employing a pump unit system A volumetric flowmeter (1) is equipped with a detachable pump unit (2), a main body casing (3) accommodating the pump unit (2), and a cover member (4). The main body casing (3) is equipped with a front side main body casing ... | 03/15/2011 |
| 7905141 | Path structure related to flow of fluid to be measured and pressure difference detection in servo type volumetric flowmeter One pressure difference detection connecting path (71) and another pressure difference detection connecting path (72) are formed so as to be arranged at a predetermined interval in a longitudinal direction. Further, the one pressure difference detectio... | 03/15/2011 |
| 7757554 | High accuracy mass flow verifier with multiple inlets A high accuracy mass flow verifier (HAMFV) which provides high measurement accuracy over a wide flow verification range with low inlet pressures is disclosed for verifying flow measurement by a fluid delivery device. The HAMFV includes a chamber defining a plurality... | 07/20/2010 |
| 7584657 | Magnetic flow sensor A flow sensor for determining the flow rate of a fluid therethrough. The flow sensor may include a chamber for the fluid to flow therethrough, a moveable magnet positioned within the chamber, a stationary magnet positioned about the chamber, and one or more sensors ... | 09/08/2009 |
| 7493811 | Positive displacement meter seal scheme A positive displacement water meter includes a measuring chamber having an outlet port defined therein, wherein the outlet port includes a channel defined around the outlet port. A seal includes a planar surface and a curved surface, wherein the planar surface is su... | 02/24/2009 |
| 7461549 | Mass flow verifiers capable of providing different volumes, and related methods Embodiments of the present disclosure are directed to systems, methods, and apparatus, including software implementation, useful for high-precision measurement of mass flow rate over a large range of flows by using multiple volumes, each having a different and selec... | 12/09/2008 |
| 7428840 | Apparatus for measuring volumetric or mass fluid flow The present invention provides apparatus for measuring volumetric or mass flow of fluid. The apparatus comprises a capsule that is adapted to move upwardly and downwardly within a housing and receive fluid from a tube. The apparatus further comprises force exerting ... | 09/30/2008 |
| 7395708 | Flow measuring apparatus including a piston movable in the flow barrel A flow measuring apparatus of an embodiment is provided that comprises a cylinder and a piston movable in the cylinder between first and second positions. The piston divides the cylinder's interior area into first and second portions. A biasing member urges the pist... | 07/08/2008 |
| 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 |
| 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 |
| 7334391 | Electric power supply equipment An electric power supply system capable of maintaining stable power generation or the like regardless of variation in the amount of fuel gas being supplied and variation in the gas calorie, comprises a gas engine, a gas turbine, a suction device configured to collec... | 02/26/2008 |
| 7320249 | Magnetically attracted inspecting apparatus and method using a fluid bearing An apparatus and method for inspecting a structure are provided which include probes with sensing elements and are disposed proximate opposite surfaces of a structure, where only one of the probes need be driven. A tracking probe may be magnetically coupled to a dri... | 01/22/2008 |
| 7278310 | Non-invasive measurement system A non-invasive piston-cylinder measurement system of a cylinder and a piston mounted for axial movement within the cylinder. The cylinder comprises a non-magnetic cylinder wall. A magnet is mounted within the piston. A plurality of magnetically activated switches, s... | 10/09/2007 |
| 7191646 | Positive displacement flow meter A flow meter includes a meter body defining a cavity having opposing ends joined by opposed sides at corners. At least one of the corners is recessed to form a reservoir. A box frame defining a frame interior is received in the cavity for reciprocal movement between... | 03/20/2007 |
| 7152469 | Fluid flow sensor, method and system A fluid flow sensor, a method of detecting flow/no flow and flow systems employing same are provided. In one embodiment, an infrared light emitting diode (“LED”), phototransistor, rigid housing and a flexible opaque diaphragm are used. The diaphragm opens upon a... | 12/26/2006 |
| 7062967 | Fuel level sensor An apparatus and method are provided for determining the fuel level in a fuel tank. The apparatus includes an acoustic transducer arranged to transmit an acoustic signal and receive a reflected signal. A float remains buoyant at the surface of the fuel in the tank a... | 06/20/2006 |
| 7033147 | Centrifugal fluid pump assembly with flow rate calculating section A centrifugal fluid pump assembly includes a body section and a control mechanism 6. The body section includes a housing, an impeller rotatable within the housing, and a motor for rotating the impeller. The pump assembly includes a motor current flow rate-related da... | 04/25/2006 |
| 6973936 | Fluid injection system A fluid injection system controls the distribution of fluid from a supply line to a selected well at an adjustable rate. A fluid barrier divides a cylinder into first and second chambers. A multi-position valve comprises a first position for passing fluid from the s... | 12/13/2005 |
| 6901813 | Flow meter alarm device A flow meter alarm device easily attached to and removed from a flow meter at various locations along the length of the flow meter. The device is compatible with flow meters which have a float for measuring flow velocity. The device preferably has two housings, exte... | 06/07/2005 |
| 6898984 | Measuring apparatus to determine the flow of a fluid A measuring apparatus (1) for determining the flow (Q) of a fluid (2). The apparatus has a hollow body (3), with an inflow (4) and an outflow (5) for the fluid (2). A magnetic sample (6) is movably arranged in the hol... | 05/31/2005 |
| 6862931 | Volumetric liquid meter A reciprocating-piston type meter for measuring liquid volume comprises a meter body 2 having a measuring chamber disposed therein. In a space 11 existing between the meter body 2 and the measuring chamber 7, the meter has means 13 | 03/08/2005 |
| 6855897 | Water treatment apparatus and components A portable water treatment apparatus including: a pump, a coarse filter means, an adsorbent filter means, a fine filter means, a silver ion generator downstream of the pump and in series with the adsorbent filter and control means for controlling the operation of sa... | 02/15/2005 |
| 6779983 | Sludge pump with management system A viscous material (sludge) pump, a method of accurately estimating output of such a pump and a method of efficiently managing such a pump. The pump can be the single or double cylinder variety. The pump is calibrated to determine a calibrated sludge-weight output o... | 08/24/2004 |
| 6668643 | Optical flow-meter device A optical flow-meter device comprises an outer tubular body provided with an inlet pipe fitting and an outlet pipe fitting for a fluid, and a tubular element made of transparent plastic material, which sealingly extends inside the body between the inlet a... | 12/30/2003 |
| 6339959 | Magnetic float type flowmeter The present invention relates to magnetic flow meters comprising a floating member, made of magnetically responsive material and residing within a tubular conduit, through which the fluid flows. The flow meters are provided with a means for producing magn... | 01/22/2002 |
| 6292757 | Method and apparatus for continuously monitoring parameters of reciprocating compressor cylinders An apparatus and method for continuously monitoring selected parameters of reciprocating compressor cylinders is disclosed, the apparatus includes a plurality of sensors positioned to monitor selected parameters within the cylinder on either side of the p... | 09/18/2001 |
| 6237423 | Method and device to determine delivery rate or mass flow rate of material conveyed by a high density liquid piston pump The invention relates to a device and a method to determine the delivery rate or mass flow rate of material conveyed by a high density liquid piston pump (10) through a delivery line (24). The exact determination of the above mentioned variables is achiev... | 05/29/2001 |
| 6095194 | Pulsation suppression device for a pump The present invention relates to a pulsation suppression device which is interposingly used in a liquid transporting pipe through which a chemical liquid such as a surface washing liquid for washing an IC is transported by a reciprocal pump. The pulsation... | 08/01/2000 |
| 6050143 | Fluid flow system and method for sensing fluid flow A fluid flow system and method according to which a fluid flow meter is provided that receives fluid and has an internal member that rotates in response to fluid flow through the meter. A self-contained, battery-operated sensor is disposed adjacent to, bu... | 04/18/2000 |
| 5835372 | Integrated fluid flow evaluation apparatus and method A microcontroller directed circuit evaluates volume flows through fluid distribution lines. The control circuit is integrated into a modularized housing designed to retro-fit standard fluid divider valve assemblies. The modular housing includes a plunger-... | 11/10/1998 |
| 5717137 | Flow monitoring line strainer A line strainer for screening fluid flow in a small diameter conduit is constructed with an integral housing of clear or transparent thermoplastic polymer. A fluid flow channel through the housing center is terminated at opposite ends by sonically welded ... | 02/10/1998 |
| 5578752 | Process for measuring the flow rate of thick matter pumps A process and device are disclosed for determining by a measurement technique the flow rate of a substance conveyed by means of a thick matter piston pump (1) through a delivery pipe (22). The thought at the basis of the invention is that the filling leve... | 11/26/1996 |
| 5520058 | Magnetic reluctance flowmeter A magnetic reluctance flowmeter having a magnetic float in which a permanent magnet and soft iron pole pieces are arranged in such a manner that the resulting magnetic field passes directly through the yoke which is also made of soft iron. The shape of th... | 05/28/1996 |
| 5513779 | Modular metering device The metering device for supplying precisely measured amounts of any viscous or pasty substance comprises a main body (10) in which there is disposed an adjusting socket (12). A stopping pin (13), and a metering piston (17) are disposed opposite one anothe... | 05/07/1996 |
| 5507624 | Sludge Pump The present invention is a sludge pump system which includes a means for monitoring operation of a sludge pump. The sludge pump includes a material cylinder and a piston moveable in the material cylinder. A pump drive moves the piston during working cycle... | 04/16/1996 |
| 5456107 | Modular gas flowmeter A high accuracy flowmeter for testing and calibrating flowmeters and the like, and more particularly a positive displacement flowmeter which may include a cylinder (12), a piston (10) within the cylinder (12) which makes a clearance seal with the inside o... | 10/10/1995 |
| 5440925 | Flow calibrator The invention relates to a high accuracy flowmeter for testing and calibrating flowmeters and the like, and more particularly to a positive displacement flowmeter which may include a cylinder (12), a piston (10) within the cylinder (12) which makes a clea... | 08/15/1995 |
| 5400650 | Apparatus for counting cycles of fluid flow There is provided a counting apparatus which is designed to be located in any position in series with a fluid flow line. The apparatus has a first magnet in an air chamber of the body of the counter. As the fluid passes through the air chamber, the first ... | 03/28/1995 |
| 5392648 | Device for measuring a pre-determined volume of liquid flowing therethrough A gauge for measuring a pre-determined volume of liquid flowing through a conduit. A slug having substantially neutral buoyancy is positioned within the conduit and moves along the conduit at substantially the same rate as the liquid flowing therein. The ... | 02/28/1995 |
| 5392632 | Small volume prover A small volume prover is disclosed which is compact and capable of obtaining highly reliable measurement, keeping a highly accurate base volume without being affected by temperature and pressure of fluid to be measured. The prover includes a cylindrical o... | 02/28/1995 |
