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5228331 |
Viscometer
A viscometer has a hollow torsion bar to be dipped into a liquid, the viscosity of which is to be measured, a probe constituted by a massive hollow body mounted on the distal end of the hollow...
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5201215 |
Method for simultaneous measurement of mass loading and fluid property changes using a quartz crystal microbalance
A method, using a quartz crystal microbalance, to obtain simultaneous measurement of solid mass accumulation and changes in liquid density-viscosity product. The simultaneous real-time measurements...
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5056357 |
Acoustic method for measuring properties of a mobile medium
The invention relates to a method for measuring parameters and/or properties in a mobile medium, e.g. a liquid or a gas. If acoustic energy is transmitted into a mobile medium, a flow is initiated...
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5005401 |
Noncontact on-line measurement of the viscosity of liquid paint
A method and apparatus for non-contact measurement of the viscosity of a liquid such as paint. In accordance with the method and apparatus, the surface of a liquid is perturbed with a standing wave...
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4941346 |
Vibration-type rheometer apparatus
A vibration-type rheometer comprises a vibration-type viscometer having a pair of vibrator subassemblies which resonate as in a tuning fork. The pair of vibrator subassemblies constituting a tuning...
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4922745 |
Fluid transducer
A transducer for measuring a parameter of a fluid, such as density or viscosity, comprises two generally parallel tines extending from a common yoke, forming a tuning fork adapted to be immersed in...
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4920787 |
Viscometer
A resonator in the form of a cylindrical body is immersed in a fluid to be measured and excited by a piezoelectric transducer in the vicinity of its natural frequency. The vibration frequency is...
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4862384 |
Method of measuring the dynamic viscosity of a viscous fluid utilizing acoustic transducer
The dynamic viscosity of a viscous medium is measured by positioning an acoustic transducer in the temperature and pressure environment of the medium and spaced from the medium, then measuring a...
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4788466 |
Piezoelectric sensor Q-loss compensation
There is disclosed Q-loss compensation apparatus for a piezoelectric sensor such as a quartz crystal microbalance or other resonant vibratory device wherein the vibration amplitude of the device is...
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4783987 |
System for sustaining and monitoring the oscillation of piezoelectric elements exposed to energy-absorptive media
The disclosed system includes a piezoelectric crystal exposed to an energy-absorptive medium of interest. A crystal oscillation circuit is included for sustaining oscillation of the crystal in...
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4779452 |
High temperature ultrasonic viscometer
An ultrasonic viscometer is described which is particularly designed for monitoring the viscosity of a thermally curing resin or composite, such as a fiber-reinforced epoxy composite, in an...
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4773428 |
Apparatus and method for measuring viscoelastic properties of mammalian cervical mucous
An apparatus and method for measurement of viscoelastic properties of mammalian cervical mucous by generating a bulk acoustic wave which is reflected off of a face in contact with the mucous...
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4735097 |
Method and apparatus for measuring fluid characteristics using surface generated volumetric interrogation signals
A method and apparatus for measuring fluid characteristics use a non-invasive ultrasonic system for generating spatially extended signals into a volume of a fluid and detecting said signals for...
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4721874 |
Apparatus and method for determining the viscosity of a fluid sample
Viscosity of small fluid samples is measured by coupling an ultrasonically energized shear transducer to a fluid sample through a polymeric coupling layer having a thickness and shear impedance...
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H000336 |
Non-destructive method to assess physical condition of chemical fill
This invention relates to a method for assessment of the condition, and cge of condition, of the liquid fill for chemical projectiles by analyzing the vibrational characteristics of the projectile...
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4691714 |
Rheological testing apparatus and method
The device electronically measures fluid viscosity and temperature simultaneously principally for determining the changes in the properties of cervical mucus at the onset of ovulation. Interdigital...
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4574624 |
Ultrasonic echo sounding device for observing web formation and pulp suspension flow in a paper machine
An ultrasonic echo sounding device permits observation of the web formation and/or the pulp suspension flow on the wire part and in the head box of a paper machine. The device includes a series of...
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4559810 |
Method for determining resin viscosity with ultrasonic waves
A method for determining the dynamic viscosity of a specimen of a polymeric resin which is subjected to a time-varying temperature includes the steps of passing an ultrasonic sensing wave of known...
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4505154 |
Contactless measuring device for real-time detection of the properties and quantities respectively characteristic of the separation of volumes of liquid and the splitting of layers of liquid in the nips formed by the rollers on printing machines
This invention relates to a method of and a device for the weighted measurement of quantities of liquid per unit area and/or the relative quantities of a liquid per unit area by means of an...
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4488816 |
Apparatus for the generation and the automatic control of ultrasonic waves in the treatment of fluids
This apparatus is used in industrial treatment processes for fluids constituted of several chemical components which must be perfectly homogenized before taking part in processes, when it is...
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4408494 |
Ultrasound measuring instrument
An instrument for measuring ultrasound has a chamber through which sound waves can travel from end to end of the chamber. An acoustic focusing device near one end of the chamber concentrates the...
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4331025 |
Methods of measuring fluid viscosity and flow rate
A method of measuring the flow rate of a fluid through a conduit by means of a sonic flow meter employing the steps of measuring the speed of sound transmission through the fluid from an upstream...
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4320659 |
Ultrasonic system for measuring fluid impedance or liquid level
An ultrasonic system that measures either the impedance of a fluid or liquid level utilizes moderately directional, bulk SV mode sound waves generated by a transducer and propagated in a...
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4193293 |
Apparatus for determining blood elasticity parameters
Apparatus for determining blood elasticity parameters, comprising a cylinder suitable to be immersed in a blood container subjected to regular oscillations. The cylinder is rigidly secured to a...
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4187462 |
Electronic system for determining blood sedimentation rate using a continually retuned resonant circuit
A device for determining the blood sedimentation rate in a substantially vertical test tube, where the electrical or magnetic property of a given volume of liquid, which is changed by the settling...
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3449940 |
APPARATUS FOR MEASURING PHYSICAL PROPERTIES OF MATERIALS
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3435664 |
METHOD AND APPARATUS FOR EVALUATING THE PROPERTY OF A LIQUID BY ACOUSTIC MEANS
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3194057 |
Ultrasonic viscosimeter
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2966058 |
Measurement of dynamic properties of materials
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3553636 |
Title is not available
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3587295 |
Title is not available
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