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8656793 |
State of charge indicator and methods related thereto
Embodiments of the invention relate a charge indicator for determining the mass of a fluid contained within a fluid enclosure, wherein the charge indicator responds to a deformation of a solid... |
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8286464 |
Sensing device and methods related thereto
Embodiments of the invention relate to a device for a fluid enclosure. The device includes a sensing device that responds to a change in distance relative to a fluid enclosure. The change in... |
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7863035 |
Fluidics devices
The invention relates to fluidics as used in medical and diagnostic equipment and relates further to means for purifying, abstracting, filtering, detecting and/or measuring analytes in liquid samples. |
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7402425 |
Stress-based electrostatic monitoring of chemical reactions and binding
Electrostatic capacitance measurements are used to detect chemical or biological analytes, or chemical interactions, with great sensitivity. A diaphragm is coated with a material capable of... |
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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... |
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7117732 |
Fuel gauge for fuel cartridges
Fuel gauges for fuel supplies for fuel cells are disclosed. Each fuel gauge has a property that is readable by an electrical circuit. These properties are related to the remaining fuel in the fuel... |
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7032447 |
Diaphragm gas meter
In a gas meter, a measuring diaphragm is provided inside a measuring chamber, the measuring diaphragm is caused to reciprocate according to a gas pressure of gas flowing from a gas inflow port to... |
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5594167 |
Gas meter having cam for reciprocating valve covers and related methods
A gas meter includes a cam for driving first and second valve covers associated with respective diaphragms. Gas flowing into the gas meter is selectively directed by the first and second valve... |
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5526685 |
Fluid flow rate measuring and controlling apparatus and method for using same
A volumetric flow control apparatus and method for measuring and controlling the volumetric flow rate and flow volume of a fluid. The apparatus comprises a reciprocating diaphragm meter having a... |
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5515722 |
Gas meter with unitary central core defining multiple flow passages
A dry gas meter includes a unitary core which functions as the meter casing and defines the inner sides of two gas chambers, a valve gear chamber, an index housing and multiple gasways. A central... |
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4848148 |
Cyclic motion detection arrangement
An arrangement for detecting cycles of operation of a positive displacement diaphragm gas meter sets up a magnetic field which is directed through the non-magnetic housing of the meter toward an... |
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4796651 |
Variable gas volume flow measuring and control methods and apparatus
A method and apparatus for measuring gas flow volume in a system (of the kind in which the amount of gas flowing in a duct can vary in response to the variation of area of a variable area orifice... |
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4788389 |
Flow switch valve
A flow switch valve including a housing main body comprising a plurality of valve casings stacked contiguously and each having a fluid flow channel and a valve seat member, a valve member passing... |
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4512187 |
Flow rate controller
Flow control of a shear-sensitive, i.e. pressure gradient degradable, liquid from a high pressure source to a lower pressure discharge is achieved by controlling the liquid's exposure to a... |
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4473082 |
Lung exerciser with variable resistance
A device consisting of an adjustable volume bellows made of inexpensive materials to be used as a visual indicator and volume measurement to encourage a patient to breath deeply as an exercise is... |
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4350167 |
Respiratory exerciser
A respiratory exercise device for measuring the volume of air inhaled by the user, the device comprising an essentially rigid transparent container having an inhalation tube by means of which air... |
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4345605 |
Lung exerciser
A volume type lung exerciser consisting of a light bellows made of a stack of flat sheets of plastic film welded together and having an inner support skeleton of semi-rigid sheets. The bellows is... |
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4241740 |
Bellows type incentive spirometer
A spirometer comprises an upright, hollow frame structure having opposite end portions with an expansible and contractible bellows therein responsive to exhalation and inhalation. The bellows... |
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3898987 |
Breathing responsive device and method
A smooth, accurately spherical, lightweight ball is located in a smooth, accurately cylindrical glass tube. The ball forms a nearly gas-tight seal with the tube wall, but is free to move easily in... |
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3657894 |
SYSTEM FOR PRODUCING PILES MOULDED IN THE GROUND
System for producing ground-moulded piles. A pressure gauge capsule exposed to the concrete in the concrete supply pipe controls the extraction of the tubing through which the concrete is supplied... |
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3589190 |
RESPIRATION TESTING APPARATUS
A respiration testing apparatus suitable for use in pulmonary function analysis. The apparatus includes an outer casing and a horizontal bellows which has a fixed end plate secured to the casing... |
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3456507 |
SAFETY DEVICE FOR CORRECTING INSTRUMENTS FOR GASEOUS FLUID METER OF THE PLUNGING BELL-JAR TYPE
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3423551 |
PRESSURE SENSITIVE SWITCH
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3420225 |
BALANCED BELLOWS SPIROMETER
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3030808 |
Equipment for distributing liquid and gate valve for operating it
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2911827 |
Fluid meter
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2870305 |
Constructions for anemometers of the hot wire type
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2815006 |
Machine such as a motor or pump for service with gaseous or fluid media, and in particular a compressed air motor
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2795138 |
Gas meters
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