Matches 1 - 50 out of 103 1 2 3 >


Match Document Document Title
8644115 Hydrophone and pressure balancing device for using for hydrophone  
A sound sensor, a hydrophone including the sound sensor, and a pressure balancing device for using for the hydrophone are provided. The hydrophone includes: a sensor including a sensing part and a...
8047079 Method for controlling an electronic pressure gauge and pressure gauge therefor  
The invention provides a method for controlling an electronic manometer for measuring pressure (p) inside a pressurized gas receptacle. The manometer comprises at least one pressure sensor, an...
7210358 Force sensor assembly  
A force sensor assembly includes a force sensor, a first support member, a threaded portion, an opening made in the first support member, a nut, a restricting member and a spacer. The nut is...
6889669 System and method of managing pressure in a fuel system  
A system and method of managing fuel vapor pressure in a fuel system. The direction of air flow between first and second ports on either side of a chamber is controlled by a liquid that divides...
6626045 Pressure measurement device  
A pressure measurement device comprising a housing enclosing an elastic pressure measurement element and a magnet attached to the measurement element. First and second Hall sensors operatively...
6591684 Pressure sensor intergrated into an electro-hydraulic control unit  
A pressure sensor is mounted upon a hydraulic valve body. The sensor has a base which extends into a bore formed in the valve body. The valve body bore is in communication with a pressurized...
6557417 Method and device for void fraction measurement and adverse output signal mitigation on pressure-base instruments  
A method and device for void fraction measurement in a gas/liquid two-phase stratified flow system in disclosed. A couple of pressure-signal tubes are mounted to the through into the top and...
6349602 Seat occupant detection apparatus  
A beam is mounted to a mounting flange. A seat pan is mounted to opposite end portions of the beam. Provided near a middle portion of the beam is a sensor unit for detecting flexure of the middle...
6305228 Pressure sensor device and suction release apparatus  
When a suction/breakdown instruction signal is changed over from a high state to a low state, a vacuum generating electro-magnetic valve is turned on (the vacuum release electro-magnetic valve is...
6122972 Capacitive pressure sensor with moving or shape-changing dielectric  
A pressure sensor system includes a first conductive surface electrically isolated from a second conductive surface. A dielectric material is interposed between the first conductive surface and...
5902932 Force balancing capacitance manometer  
An apparatus for measuring the differential pressure between at least two fluids including (a) first and second pressure enclosures; (b) first and second pressure deformable members where the...
5760693 Vacuum apparatus for semiconductor device  
A vacuum controlling apparatus is provided. The vacuum level of a vacuum chamber can be accurately maintained by measuring and controlling the vacuum level of the vacuum chamber by using six...
5636547 Liquid level monitoring system having ferrofluid pressure sensor  
A liquid level monitoring system, which monitors the level of liquid in a storage tank, includes a differential pressure sensor that uses a magnetic fluid, or ferrofluid, sensing element. The...
5450853 Pressure sensor  
A pressure sensor having a tubular member partially filled with a ferrofluid column and partially filled with air, with an electrically conductive coil wrapped around the tubular member. When in...
5429000 Ferrofluid pressure sensor  
A differential pressure sensor includes a ferrofluid sensing element, or slug, that changes position in a tapered magnetic field in response to a pressure differential. The ferrofluid slug is...
5224385 Method for obtaining electrical signals correlated with the position of a mass of mercury in instruments and the like  
A method of obtaining electrical signals corresponding to the position of a mercury mass movable within a vessel, characterized by the fact that the position of the moving mass within the vessel...
5138886 Electronic manometer  
An electronic manometer for measuring pressure differentials between first and second outlets of a U tube supporting a column of mercury. The U tube includes for each arm a coaxial feedline which...
5111700 Method and apparatus for obtaining electrical signals correlated with the position of a mass of mercury in instruments and the like  
A method of obtaining electrical signals corresponding to the position of a mercury mass movable within a vessel, characterized by the fact that the position of the moving mass within the vessel...
4991404 Vacuum pressure monitoring system  
A vacuum pressure monitoring system includes a mercury manometer in communication with a vacuum line from an apparatus operating under high vacuum (approx. 0.25 in. Hg). A proximity sensor targets...
4825700 Bi-axial geomaterial test system  
A bi-axial compression test apparatus for geomaterial (soil, etc.) samples that is designed to allow free shear band formation and provide measurements of the stress displacement characteristics...
4782704 Mercury manometer  
This invention relates to mercury manometers for a purge bubbler liquid level control system or the like. More particularly, this invention relates to mercury manometers comprising a mercury...
4739663 Acoustically monitored manometer  
A U-tube manometer for calibrating a differential pressure transducer or the like, wherein the height of working fluid in each column may be determined by the two-way travel time of an acoustic...
4685908 Device for detecting increased pressure in pleural cavity  
A prebubble detector is provided for an underwater drainage apparatus. A series of sensors and detectors are disposed along the small arm of the underwater seal in a drainage device and means is...
4650767 Respirometer module with replaceable sample chamber  
The respirometer module consists of an airtight chamber which includes an air pump, a carbon dioxide scrubber, an electronic gas volume transducer, an air vent, and a fill tube. This single module...
4554535 Method and apparatus for obtaining electrical signals correlated with the position of a mass of mercury in instruments and the like  
A method of obtaining electrical signals corresponding to the position of a mercury mass movable within a vessel, characterized by the fact that the position of the moving mass within the vessel...
4462259 Pressure transducer  
A pressure transducer of the manometer type comprises two interconnected columns of liquid with means for applying differential pressure across the columns. The liquid is a magnetic liquid and a...
4461181 Control for sample volume metering apparatus  
A manometer is provided for metering samples of fluid flowing in devices wherein particle concentration in the fluid is being counted or measured. Such devices include particle counters for...
4423638 Capacitive system for manometric detection and measurement of differential pressures  
A manometric method and instrument for the continuous detection and measurement of differential pressures which includes a uniquely configured multi-capacitor sensor system. The sensor system is...
4380932 Capacitance manometer differential pressure sensor  
A transducer for providing an output signal having a value determined by an input pressure differential includes a capacitance manometer having a first input for receiving a first input pressure...
4380933 Electrical control mercury monometer  
A flat plate manometer includes a rectangular mercury column having calibration scales and a plurality of closely spaced stainless steel contacts disposed along the column. The mercury closes a...
4354389 Vapor pressure sensor and flow measuring devices  
Disclosed is a method and apparatus for measuring and/or continuously recording small pressure differences by means of a novel manometer-like device. Accuracies of plus or minus about 0.05...
4353148 Electric pressure switch  
An electric pressure switch for use with textile machines and the like has a U-shaped tube filled with a liquid. One of the legs is above the liquid level in communication with a source of...
4259975 Stock tank gauger-level controller  
Liquid level in tanks is gauged an can be controlled as follows. Liquid communication is provided from near the bottom of the tank to a liquid reservoir containing a liquid which is of different...
4244365 Device for use in detecting occlusion in an infusion system  
An overpressure device is disclosed for use in a liquid infusion set for the purpose of detecting excessive pressures which may occur during infusion. The device comprises a tubular member with an...
3943769 Electric conductive laminated vessel wall  
In a preferred embodiment of the invention, there is provided a laminated vessel wall which is able to enclose electrically conductive liquid with a know electrical property and which vessel...
3921006 Particle counting apparatus including isolated manometer  
An apparatus for controlling the pressure differential applied to the particle study device for causing a suspension of particulate matter to pass through an aperture includes an isolated...
3701283 PRESSURE-SUBTRACTING HYPSOMETRIC APPARATUS  
A hypsometric liquid such as water is supported in a closed chamber on a ular column of mercury, the mercury being exposed in a manometric manner to atmospheric pressure so that variations in the...
3564924 MAGNETO-OPTIC PRESSURE MEASURING DEVICE  
3527084 LEAK-DETECTOR  
3487694 MANOMETER  
3486380 DIFFERENTIAL PRESSURE APPARATUS FOR MEASURING FLUID DENSITY  
3459043 METHOD AND APPARATUS FOR MEASURING TEMPERATURE  
3407664 Apparatus for manometer temperature control and temperature compensation circuit and method  
3382718 Automatic warburg manometer for the constant volume measurement and recording of the pressure of one or a plurality of closed systems  
3345877 Apparatus for measuring small variations in gas pressure  
3321975 Apparatus for controlling or measuring fluid pressures  
1,086,932. Automatic pressure control. ELLIOTT BROS. (LONDON) Ltd. May 8, 1964 [May 13, 1963], No. 18937/63. Heading G3R. Fluid-pressure to be measured is applied to a liquid column and an element...
3317760 Electrolyte-reservoir coupler  
3296867 Manometer  
3290521 Electro-mechanical transducer  
3265970 Electrical input measuring device using ion drag pumps and pressure indication  

Matches 1 - 50 out of 103 1 2 3 >