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| Number | Title | Issue Date |
| 7886593 | Flow meter and flow controlling device To provide a highly accurate flow meter. A Flow meter comprising an inflow opening into which a measurement fluid flows, an outflow opening from which a measurement fluid flows, and a flow path connecting the inflow opening and the outflow opening, wherein the flow ... | 02/15/2011 |
| 7320313 | Differential pressure regulator for fuel systems A differential pressure regulator includes a housing having a first and second chamber, a fuel pump inlet, a passage, and a return orifice. The fuel pump inlet is in fluid communication with the passage and the first chamber while the return orifice is in fluid comm... | 01/22/2008 |
| 7089811 | System, apparatus, and method for guiding an exhaust gas An exhaust guide guides exhaust gases within an exhaust system to an intake portion of a sensor when an input port and an output port of the exhaust guide are positioned within an exhaust gas flow. A high pressure region formed at the input port and a low pressure r... | 08/15/2006 |
| 7000463 | Reynolds number correction function for mass flow rate sensor A mass flow rate sensor uses a Reynolds number correction function to compensate for errors in a bypass ratio of the sensor for all gases, based on the fact that all bypass errors are functions of Reynolds number. The sensor includes a sensor tube and a bypass tube ... | 02/21/2006 |
| 6253605 | Semiconductive flow proportioner A proportioning element (10) for proportioning a fluid flow from an input side to an output side of the proportioning element (10) comprises a membrane (12) provided with at least one opening (16) acting as a flow resistor for a medium to be proportioned.... | 07/03/2001 |
| 5728942 | Fluid pressure measuring system for control valves A system for improving fluid pressure measurement in a control valve includes placing a flow conditioner adjacent to and upstream from averaging channels located at the inlet and outlet of the control valve, from which averaging channels the fluid is cond... | 03/17/1998 |
| 5723783 | Acoustic displacement flowmeter An acoustic displacement flowmeter determines the flow rate of a fluid in a path containing a controllable valve by establishing fluid flow along the path, directing the flow of the fluid to a transducer having a displacement element by restricting the fl... | 03/03/1998 |
| 5650565 | Mini-dilution apparatus and method for exhaust emission testing A mini-diluter apparatus and method are provided for preparing dilute samples of exhaust gas for emission testing. The apparatus includes first and second mass flow controllers which respectively control the mixing of exhaust gas and diluent gas samples a... | 07/22/1997 |
| 5540104 | Acoustic displacement flow meter An acoustic displacement flowmeter uses a high-compliance acoustic-type displacement transducer to measure fluid flow accumulated by temporarily restricting the flow of a fluid along a path. The displacement transducer signal, representative of fluid flow... | 07/30/1996 |
| 5460038 | Acoustic displacement flow meter An acoustic displacement flowmeter uses a high-compliance acoustic-type displacement transducer to measure fluid flow accumulated by temporarily restricting the flow of a fluid along a path. The displacement transducer signal, representative of fluid flow... | 10/24/1995 |
| 5297427 | Wide-range laminar flowmeter An adjustable laminar flowmeter is disclosed for use in fluid flow measurement. The flowmeter comprises a plurality of paths, at least one of which has at least one dimension which is adjustable by means of an adjustment mechanism. A measuring device is l... | 03/29/1994 |
| 5231871 | Hot-electrical-resistance type gas flow meter and internal combustion engine with hot-electrical-resistance type gas flow meter An object of the present invention is to provide a hot-electrical-resistance type gas flow meter wherein a deterioration of a gas-cooled hot-electrical-resistance is prevented at the maximum flow rate, a decrease of sensitivity is prevented at the minimum... | 08/03/1993 |
| 5090240 | Flowmeters A bypass flowmeter assembly has a plurality of branch pipes (11) connected in parallel with a main pipe (10), with at least one of the branch pipes having a respective flowmeter (14), and at least another of the branch pipes having respective selectively ... | 02/25/1992 |
| 5029470 | Device for measuring or metering and regulating the mass of a flow of gas The invention pertains to a device for measuring and regulating the mass of a flow of gases by means of a bypass system with a sensor capillary element, a regulating valve, and an electronic component for elucidating and evaluating measurements received f... | 07/09/1991 |
| 4884441 | Variable capacity flowmeter The flowmeter of the present invention comprises at least two separate flow passages wherein one of the two flow passages include a shut-off valve with an actuator and the other of the two passage includes a flow rate sensor for measuring flow rate throug... | 12/05/1989 |
| 4870859 | Flowmeter controller for an air inleakage monitoring system A method and apparatus for controlling the operation of a normally open bypass valve in a steam turbine air inleakage exhaust vent pipe. The valve is used to bypass a flowmeter connected in a bypass pipe parallel with the valve. The flowmeter provides sig... | 10/03/1989 |
| 4858647 | Attitude-insensitive, by-pass sensor Disclosed is a valve having a body having an inlet channel, an outlet channel in fluid communication with the inlet channel, and a flow-monitoring region situated medially between the inlet and outlet channels. Further provided within the body is a second... | 08/22/1989 |
| 4840063 | Fail safe valve for an air inleakage monitoring system in a steam turbine A normally closed valve system for sealing off low pressure gas flow through a pipe. The valve system comprises an inflatable bladder which blocks relatively low pressure flow through the pipe and permits relatively high pressure flow through the pipe. In... | 06/20/1989 |
| 4524616 | Adjustable laminar flow bypass A frusto-conical adjustable laminar flow bypass restrictor which is disposed within a conically tapering bore to form a conduit capable of maintaining laminar flow and adjustable to form annuli of varying thicknesses to allow proper sensor calibration ove... | 06/25/1985 |
| 4519248 | Device for measuring a whole day urinary output This invention provides a device for measuring a whole day urinary output, which includes an outer cylindrical container and an inner hollow tubular container positioned in the outer cylindrical container for proportionally sampling urine from the outer c... | 05/28/1985 |
| 4445368 | Air flow rate meter apparatus A air flow rate meter apparatus includes an air bypass line, which branches off from a filter housing on the air intake fitting of an internal combustion engine and discharges at a restriction of the air intake tube upstream of a throttle valve. An inject... | 05/01/1984 |
| 4429581 | Multiphase flow measurement system A multiphase flow measurement system determines the individual total flow rates of the water, gas, and oil components in a production fluid mixture from a subterranean well. The system includes a mass flow measurement unit which is coupled to the outlet o... | 02/07/1984 |
| 4366719 | Instrument for measuring the flow rate of a fluid in motion A flow-rate meter has a cylindrical housing in which a counterweighted blade is pivotable on a shaft about the axis of the housing which is subdivided by a radial partition, an inlet port and an outlet port opening axially into this housing on opposite si... | 01/04/1983 |
| 4315431 | Adjustable flow divider for mass flowmeters An adjustable flow divider for a mass flowmeter useful in shunting a portion of a fluid flow from a main supply line. The adjustable flow divider includes a porous tube (32) having a plurality of longitudinally extending projections (34) on the inner surf... | 02/16/1982 |
