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7546778 |
Flow meter
An axial flow meter includes a housing including a generally elongated body with a continuous internal bore. Two spindles are mounted parallel to one another in the housing. Each spindle has a...
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7533693 |
Side-mounted position indicator for flapper check valve
The present invention is a side-mounted position indicator for use with a flapper check valve. The indicator is located outside the valve body and attaches to an internal, cylindrically-shaped...
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7245230 |
Dual magnetic field sensor unit
The present inventions relate to a method and apparatus for adding Automatic Meter Reading (AMR) capabilities to utility meters that generate a magnetic field comprising magnetic flux that varies...
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7028561 |
Fuel dispenser fuel meter error detection device, system and method
A flow switch used in conjunction with a fuel meter in a fuel dispenser to determine when fuel is flowing. A flow switch can only be activated if fuel is flowing through the flow path of the flow...
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7017425 |
Bucket wheel assembly for fluid flow meters
An improved bucket wheel assembly with a center frame, having a plurality of fingers extending therefrom. In each of the fingers a slot is formed. The assembly also includes a plurality of...
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7001510 |
Siphon hose with gallon counter
A siphon to be used when removing water from a personal aquarium for cleaning purposes. The water passes through propellers or flaps of a present friction, which monitor the volume flowing out of...
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6997064 |
Fluid metering and control device
A fluid measuring device that displays fluid volume usage against fluid volume limits and a fluid control device that stops fluid delivery when the fluid volume limit is reached.
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6935191 |
Fuel dispenser fuel flow meter device, system and method
A flow switch used on conjunction with a fuel flow meter in a fuel dispenser to determine when fuel flow rate signals form a fuel flow meter should be ignored in the calculation of flow rate and/or...
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6889564 |
Peak flow meter
A peak flow meter for measuring a peak flow or air exhaled by a patient. The preferred peak flow meter includes a substantially hollow housing having a top portion, a bottom portion, an air inlet...
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6881507 |
Method and apparatus for measuring the mass flow of hydrogen in a fuel cell
The mass flow of hydrogen fuel in the anode loop of a hydrogen fuel cell is measured using a rotating flow meter. The flow meter includes a bladed rotor mounted for rotation within a tube disposed...
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6604434 |
Method and apparatus for determining the direction and rate of a rotating element
The present invention provides a device for measuring both the magnitude of rotation of a rotating magnetic field as well as the direction of rotation of a rotating magnetic field. The present...
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6538433 |
Method and apparatus for non-contact measuring of metal bed parameters
In a method and device for measuring at least one parameter of a metal bed, measuring is obtained by a magnetic field being generated from one side of the metal bed so that eddy currents are...
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6367336 |
Process mass flow apparatus and method for measuring the mass flow of powdered and granulated solids as well as the accumulated weight of material passed during a specified time
A process mass flow apparatus for measuring the mass flow rate of a powdered, granulated or otherwise substantially divided process solid, seeds, grains, or similar particulate materials includes a...
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6032540 |
In-line, field adjustable irrigation flow indicator for high, normal and low flow rates
An in-line flow meter for use in drip irrigation systems which provides a field adjustable, infinitely variable visual flow indication of both high and low flow rates above and below a field...
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5847288 |
Photo detector bending beam flow switch and flow meter
A photo detecting flow sensing bending beam fluid flow switch and flow meter system having blocking targets that selectively block the optical path from an emission source to a photodetector. The...
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5787919 |
Pressure differential indicator with fire damper
A pressure differential indicating apparatus has a wall duct with first and second ends, first and second flange like mounting plates respectively disposed around and attached to the first and...
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5767419 |
Hall effect fluid flow switch and flow meter
A fluid flow monitoring system comprised of a permanent magnet mounted on a bendable spring blade that provide an output from a Hall effect transducer as the permanent magnet is deflected toward...
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5681999 |
Method and apparatus for measuring dry particles
A method and apparatus for the continuous determination of the flow rate and/or total weight of dry particles, measuring the speed imposed to a movable member by dry particles falling thereon.
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5649449 |
Method and apparatus for determining the instantaneous operation conditions of a centrifugal pump
In the disclosed method of determining the current or instantaneous operating conditions of a centrifugal pump, the radial forces impressed on the impeller shaft by the operatively rotating pump...
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5589643 |
Across the wall pressure differential indicator
A pressure differential indicating apparatus having a wall duct with first and second ends, first and second flange like mounting plates respectively disposed around and attached to the first and...
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5581041 |
Apparatus for measuring flow of granular particles in conduit
A blade device in a helix configuration suspended in a conduit means flowing full of granular materials such as crushed coal to rotate with the flow thus indicating by a turning or electrical...
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5456121 |
Pivotable vane flowmeter with capacitive position sensor
A pivotable vane flowmeter comprises at least one pivotable vane disposed pivotably about a pivot axis parallel to the the direction of fluid flow and experiencing a fluid dynamic torque created by...
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5445034 |
Method of measuring the pressure of a gas in a gas accumulator, and a gas accumulator for carrying out the method
Pressure of a gas in a gas accumulator coupled to a fluid circuit is measured in a system involving separating gas from pressure fluid in a gas accumulator by a separating element, measuring...
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5413112 |
Expiratory flow measuring device
A device for measuring the maximum flow rate of a single forced expiration, comprises an elongated hollow body with inlet and outlet ends, a vane mounted to a shaft and rotatable within the body...
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5383470 |
Portable spirometer
The invention is a portable spirometer for measuring the respiration rate of a patient. In detail, the invention includes a housing having a top and bottom, and first and second ends with an air...
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5381698 |
Flow-responsive apparatus
The disclosed flow monitoring apparatus has a flow-varied sensing capacitance and an inductor in a series-resonant circuit that modulates the frequency of an oscillator. In one apparatus, the...
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5343743 |
Asymmetrical displacement flowmeter
An asymmetrical displacement flowmeter comprises a streamlined body or assembly 1 which floats or is submerged in liquid 3 and is subjected to frictional and dynamic pressure forces caused by...
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5323645 |
Device to investigate the flow movement in cylindrical components
A device to investigate the flow movement in cylindrical components of reciprocating piston internal combustion engines, which flow movement is generated by a flow-guiding system located, as seen...
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5277195 |
Portable spirometer
A portable hand-held spirometer capable of being accommodated in a pocket or handbag, comprising a chassis, an enclosed curved passageway in communication with the chassis including an inlet, for...
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5233867 |
Lever-operated dynamic fluid flow sensing system
A dynamic fluid flow measurement apparatus is intended to be connected to a relative reference member, such as a marine vessel. The apparatus preferably includes a base member, a lever mechanism...
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5189918 |
"Null" flow sensor
A flow sensing device includes a semiconductor substrate 31 and a pivoted beam 1. Below one half of the beam is a channel 7 running throughout the substrate 31, and below the other half of the beam...
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5103757 |
Self cleaning device for sight flow indicators
A self cleaning device for rotatable sight glass equipped visual flow indicators (for visually indicating fluid flow therethrough) that includes several stationary wiper implements that each...
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5091612 |
Magnetically actuated proximity flow switch
A flow switch adapted to be attached to a pipe is designed to trip a switch at a preset flow rate. The switch employs a bending metal blade which deflects in the flow stream to move a magnet...
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5056373 |
Flow responsive transmitter and indicator
In the measurement of fluid flow, the generation of a linearly varying signal and a pulsation free display are provided by a flow responsive indicator having digit displays for numerically...
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4926903 |
Butterfly valve having a function for measuring a flow rate and method of measuring a flow rate with a butterfly valve
A butterfly valve having a function for measuring a flow rate of a fluid flowing through the butterfly valve includes a main body, a valve shaft fixed rotatably to the main body, a valve member...
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4911022 |
Flowmeter with a fluid dynamic target
The flowmeter of the present invention comprises a fluid dynamic target of an elongated planar geometry having an airfoil shaped cross section disposed generally parallel to the direction of the...
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4906807 |
Apparatus for monitoring the flow of fluid media in a pipeline
An apparatus for monitoring the flow of fluid in the pipeline has a hollow housing with a control element movably supported therein. The control element is movable under the action of the fluid...
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4782333 |
Water-flow detector with rapid switching
A cylindrical shuttle having a cone-shaped cam surface on one end which slides freely on a timer shaft between a first stop and a second stop which are attached to the shaft. A vane arm driven by a...
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4777830 |
Flowmeter with pivotably floating fluid dynamic target
The flowmeter of the present invention comprises at least one combination of a rotatable member and at least one fluid dynamic target, wherein the fluid dynamic target is secured to the rotatable...
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4615303 |
Fluid flow failure detection means
A water flow failure detection device comprising a first water flow conduit; a second conduit with one end closed and the other end open communicating with the water flow conduit; positioned within...
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4561309 |
Method and apparatus for determining pressure differentials
A method and apparatus for sensing a pressure differential between two spaces or areas, including a U-shaped length of hollow tubing having an inlet end and an outlet end which permits the free...
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4526042 |
Air flow measuring apparatus
An air flow measuring apparatus having a measuring plate provided within an air intake pipe and a potentiometer having divided resistor material, a slider support member and switching contacts in...
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4470292 |
Shot peening intensity detector
In shot peening apparatus, a device is provided for sensing shot peening intensity and the uniformity of shot flow. It is basically comprised of a detector plate mounted on a cantilevered arm;...
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4428242 |
Flowmeter using twisting torque
The invention relates to a flow rate measuring device in a liquid flow including a torque detecting member having its longitudinal plane fixedly mounted at an acute angle relative to the direction...
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4405882 |
Air flow sensor
An air flow sensor 14 senses the presence of cooling air from a blower 12 to a lamp housing 10. A vane 44 closes an opening 42 when air is flowing to close a switch 50 which permits a lamp 16 to be...
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4389887 |
Wind velocity gage for sailboats
A wind velocity gage for use on sailboats including a vertical shaft to be mounted on or near the mast head. A vane is pivotally mounted on the end of the shaft and includes a forward small...
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4346584 |
Gas analyzer
Apparatus for automatically analyzing a gas sample to determine the concentration of an absorbable gas therein, such as carbon dioxide in a patient's out breath. In the preferred embodiment, the...
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4346607 |
Fluid flow meter with improved sealing means
A flow meter is provided having a housing with inlet and outlet ports respectively adapted to be connected with a source of fluid pressure and a fluid user. A semicircular vane member mounted...
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4291583 |
Drag flow meter
A drag-type flow meter is disclosed of the type having a drag plate disposed in the fluid flow stream, the velocity of which is to be measured. The drag plate is mounted on a cantilevered arm which...
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4271014 |
Dialysis apparatus and technique
Dialysis apparatus is arranged to enable convenient measuring of ultrafiltration rate from liquid, such as blood, that is to be dialyzed. Dialyzer can have, downstream of a dialysis chamber, a...
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