Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 7966863 | Viscometer The viscometer provides a viscosity value (Xη) which represents the viscosity of a fluid flowing in a pipe connected thereto. It comprises a vibratory transducer with at least one flow tube for conducting the fluid, which communicates with the pipe. Driv... | 06/28/2011 |
| 7775084 | Fluid probe A device for detecting a property of a fluid includes a body region and a flexible element having a first end and a second end. The first end is fixedly located on the body region. The flexible element is arranged to move from at least a first configuration to a sec... | 08/17/2010 |
| 7444245 | Field device for determining and/or monitoring a process variable Field device for determining and/or monitoring at least one process variable of a medium in a container. The field device includes: at least one mechanically oscillatable unit connected with the container via a process connection; and at least one driver/receiver un... | 10/28/2008 |
| 7412877 | High pressure viscometer with chamber preventing sample contamination Viscometer (80) with a rotor (51) rotatable by a coupling magnet (34) and a driving magnet (38) to shear a tested fluid thus imparting torque to a bob (30) mounted on a bob shaft (24) supported via a pair of bob shaft bearin... | 08/19/2008 |
| 7353695 | Methods and apparatus for determining properties of a fluid A method and system for determining properties of a fluid involves interacting the fluid with a standing wave in a first state to establish the standing wave in a second state, analyzing an electric signal associated with the standing wave to determine a characteris... | 04/08/2008 |
| 7287416 | Low maintenance high pressure viscometer Viscometer (80) with a rotor (51) rotatable by a coupling magnet (34) and a driving magnet (38) to shear a tested fluid thus imparting torque to a bob (30) mounted on a bob shaft (24) supported via a pair of bob shaft bearin... | 10/30/2007 |
| 7263874 | Methods and apparatus for determining properties of a fluid A method and system for determining properties of a fluid involves interacting the fluid with a standing wave in a first state to establish the standing wave in a second state, analyzing an electric signal associated with the standing wave to determine a characteris... | 09/04/2007 |
| 7219537 | Control of equivalent shear rate in acoustic wave sensors An apparatus and a method for controlling the shear rate at which an acoustic wave device measures viscosity, by utilizing an automatic level control or an automatic gain control circuit to control power input to the sensor as a function of the sensor's output power... | 05/22/2007 |
| 7146280 | Startup and operational techniques for a digital flowmeter Startup and operational techniques for a digital flowmeter are described. The techniques select an optimal mode of operation for the digital flowmeter, depending on a current environment of the flowmeter. For example, during a startup operation of the flowmeter, the... | 12/05/2006 |
| 7136761 | Digital flowmeter A controller for a flowmeter includes an input module operable to receive a sensor signal from a sensor connected to a vibratable flowtube. The sensor signal is related to a fluid flow through the flowtube. The controller also includes a signal processing system ope... | 11/14/2006 |
| 7010963 | Liquid detecting apparatus Piezoelectric plates conduct bending vibrations and are axially symmetrical about the vibration shaft so the piezoelectric plates conduct a bending vibration, lower vibrating ends of the piezoelectric plates are rigidly connected to a vibration suppressing member an... | 03/14/2006 |
| 6978662 | Rheometer A rheometer has an upper measuring part and a lower measuring part, between which a measuring chamber is formed for receiving a sample of a substance to be examined, wherein the two measuring parts can be moved relative to each other and, in particular, can be rotat... | 12/27/2005 |
| 6950760 | Startup and operational techniques for a digital flowmeter Startup and operational techniques for a digital flowmeter are described. The techniques select an optimal mode of operation for the digital flowmeter, depending on a current environment of the flowmeter. For example, during a startup operation of the flowmeter, the... | 09/27/2005 |
| 6938462 | Device for measuring viscosity and/or density A device for measuring the viscosity and/or the density of a fluid using a resonator capable of mechanical vibrations. The resonator is capable of being brought into contact with the fluid. An oscillator circuit is also provided, wherein the oscillator circuit has a... | 09/06/2005 |
| 6917887 | Digital flowmeter A flowmeter includes a vibratable conduit, a driver connected to the conduit and operable to impart motion to the conduit, and a sensor connected to the conduit and operable to sense the motion of the conduit. A control and measurement system is connected to the dri... | 07/12/2005 |
| 6907785 | Diagnostic sensor A sensor of force or viscosity or other attributes of a fluid comprises a mechanical resonator (10) including an element (11; 18; 123) of which the stiffness at least partially determines a modal shape of the resonance of the resonator and means (21... | 06/21/2005 |
| 6769295 | Continuous measurement of the rheological characteristics of well fluids The present invention relates to a method and to a system for monitoring the evolution of the characteristics of a fluid circulating in a well (1) for example, wherein complex dynamic viscosity measurements are performed with a suitable detector (6) ar... | 08/03/2004 |
| 6711942 | Apparatus for determining and/or monitoring the viscosity of a medium in a container The invention relates to an apparatus for determining and/or monitoring the viscosity of a medium in a container, having a unit which can oscillate, having a drive/reception unit and having a control/evaluation unit, in which case the unit which can oscillate is arr... | 03/30/2004 |
| 6691559 | Viscometer A viscometer for measuring liquid viscosities based upon rotational deflections of a suspended bob. The viscometer comprises a deflection indicator, a deflection reader located at a spaced relative position with respect to the indicator, a rotating elemen... | 02/17/2004 |
| 6681617 | Variable eccentric rheometer system An apparatus for testing polymeric samples is shown in which a polymer specimen is subjected to sinusoidal, oscillatory motion. The oscillatory motion is generated by the use of a continuously variable eccentric cam that is affixed to a drive shaft rotate... | 01/27/2004 |
| 6602714 | Viscosity and mass sensor for the high-throughput synthesis, screening and characterization of combinatorial libraries Workstation, apparatuses and methods for the high-throughput synthesis, screening and/or characterization of combinatorial libraries. The invention relates to an array, which permits various high-throughput methods for synthesis, screening and/or characte... | 08/05/2003 |
| 6591664 | Method and arrangement for measuring characteristics of a non-newtonian fluid To measure characteristics of a non-Newtonian fluid, preferably blood, a non-magnetic container is provided for receiving the fluid. A magnetic body is contained in the container, and a winding is provided around the container. An AC current supplying dev... | 07/15/2003 |
| 6490911 | Sensor device with fluid introduction holes A sensor device includes a base body 12 having a vibrating portion 14, a piezoelectric element 20 fixed onto one surface of the vibrating portion 14 and having a piezoelectric film 22 and a pair of electrodes 24a, 24b which are in contact with the piezoel... | 12/10/2002 |
| 6047590 | Sensor device with fluid introduction holes A sensor device includes a base body 12 having a vibrating portion 14, a piezoelectric element 20 fixed onto one surface of the vibrating portion 14 and having a piezoelectric film 22 and a pair of electrodes 24a, 24b which are in contact with the piezoel... | 04/11/2000 |
| 6044694 | Resonator sensors employing piezoelectric benders for fluid property sensing Resonator sensors namely piezoelectric benders are used for sensing fluid viscosity and density. The benders are inserted into a liquid to be monitored. An input voltage is applied to the bender causing it to vibrate in the liquid at a resonant frequency.... | 04/04/2000 |
| 5892143 | Sensor device with fluid introduction holes A sensor device includes a base body 12 having a vibrating portion 14, a piezoelectric element 20 fixed onto one surface of the vibrating portion 14 and having a piezoelectric film 22 and a pair of electrodes 24a, 24b which are in contact with the piezoel... | 04/06/1999 |
| 5837885 | Method and device for measuring the characteristics of an oscillating system A resonator (1) is vibrating close to its resonance frequency. The vibration is excited by one or a first transducer (2) connected to an oscillator (11). The vibration is measured by the transducer (2) or a second transducer (3) and stabilized by a phase-... | 11/17/1998 |
| 5792660 | Comparative determinants of viscosity in body fluids obtained with probes providing increased sensitivity This invention involves a method of analyzing a body fluid such as blood from a patient to determine whether or not there is a significant difference or change in the comparative determinants of viscosity in the body fluid sample, the comparative determin... | 08/11/1998 |
| 5698931 | Sensor element and particle sensor A sensor element for detecting solid particles in a fluid includes: a detecting unit including a piezoelectric film consisting essentially of a ceramic material, a first electrode coated onto at least a portion of the outer surface of the piezoelectric fi... | 12/16/1997 |
| 5621165 | Viscosity detector having a node alignment mechanism A vibrating member, including a vibration transmission shaft, is adapted to vibrate a liquid viscosity detector with respect to an axis of the shaft. The liquid viscosity detector is disposed at one end of the vibration transmission shaft so it can be dip... | 04/15/1997 |
| 5323638 | Sensor apparatus A sensor, for use in determining physical properties of fluid, comprises a flexible diaphragm having a plane. Two tines depend from the diaphragm substantially at right angles to the plane. First and second substantially planar transducers are each bonded... | 06/28/1994 |
| 5302878 | High-frequency acoustic rheometer and device to measure the viscosity of a fluid using this rheometer An acoustic rheometer working in the high frequency range comprises a torsional-mode transducer which is a crystal of the sillenites class, having a height that determines the resonance frequencies of the mode of torsion, and being provided with an electr... | 04/12/1994 |
| 5054313 | Control circuitry for viscosity sensors Electronic control circuitry for obtaining precise inline process control data as to viscosity of fluids over a wide viscosity range, with high tolerance of ambient noise and vibration. An electromechanical transducer with an oscillating sensor is immerse... | 10/08/1991 |
| 4909068 | Device for detecting viscosity or specific gravity of liquid A device for detecting the viscosity or specific gravity of liquid has a vibrator, a vibration transmission shaft provided thereon with the vibrator and adapted to transmit the vibration of the vibrator, and a detection terminal connected to one end of th... | 03/20/1990 |
| 4905499 | Device for detecting viscosity or specific gravity of liquid A device for detecting the viscosity or specific gravity of liquid includes a vibrator made of piezoelectric ceramics and capable of vibrating about its axis, a vibration transmission member, a detection terminal to be immersed in liquid, the viscosity or... | 03/06/1990 |
| 4799378 | Piezoelectric viscometer A piezoelectric device is used to determine the viscosity of a fluid. A piezoelectric driver is resiliently attached to a base that is isolated from vibrations. A piezoelectric receiver and a probe are resiliently attached to the piezoelectric driver so t... | 01/24/1989 |
| 4794788 | Method and apparatus for rheological testing A method and apparatus for testing samples of viscoelastic materials are shown, in which the sample is subjected to a sinusoidal excitation and the response to the excitation is measured. By sampling the response at at least three data points equally spac... | 01/03/1989 |
| 4763512 | Rheometer A rheometer for measuring viscoelasticity with a complex rigidity function comprises a tube for holding the fluid, means for oscillating the tube in the direction of its axis, detector means for detecting the position of the sample of fluid, and an analyz... | 08/16/1988 |
| 4757708 | Through hole construction for process measuring devices The measuring device (2) comprises a sensing element (4) communicating with the process substance as well as a lever-like transfer element (7) connected with the sensing element and arranged to transfer the force acting on the sensing element and generate... | 07/19/1988 |
| 4674322 | On-line instrument for simultaneously measuring the viscosity, density, and surface tension of a fluid comprising a gas dissolved in a liquid An instrument for simultaneously measuring the viscosity, density, and surface tension of a fluid comprising a gas dissolved in a liquid, at the operating conditions of the fluid, employing an instrument based on the principle of a damped, one-dimensional... | 06/23/1987 |
