Class 73/54.33 - By measuring angular displacement

Subclass of Class 73 - Measuring and testing
Definition: Subject matter wherein the determination is made by measuring
No. of patents: 39
Last issue date: 10/30/2007

Number	Title	Issue Date
7287415	Microelectromechanical system (MEMS) viscosity sensor for fluid health monitoring Embodiments of the present invention are directed to a MEM viscosity sensor that is configured to be operated submerged in a liquid. The MEMS viscosity sensor comprises a MEMS variable capacitor comprising a plurality of capacitor plates capable of being submerged i...	10/30/2007
7249523	Apparatus and method for measuring mechanical properties A rheological measurement can be made comprising the steps of disposing a sample to be measured between two opposing surfaces of a fixture; coupling two opposing surfaces of the sample with a corresponding adjacent one of the two opposing surfaces of the fixture to ...	07/31/2007
7207210	Multi-decade viscometric or rheologic measurements of a material undergoing state change Range-extending method and apparatus for testing the viscosity of a fluid (10) undergoing a state change utilizing a viscometer (2) with a rotary assembly (42) for measuring, by automatically changing the rotational speed of the rotary assembly ...	04/24/2007
7137290	Rotary rheometer magnetic bearing A rotary rheometer having a magnetic thrust bearing. The thrust disk of the magnetic thrust bearing being situated between a pair of magnetic actuator assemblies and extending beyond the circumference of the actuator assemblies so as to encompass the magnetic flux l...	11/21/2006
7073372	Online rotating viscometer and associated measurement methods Rotating type viscosimeter having a motor (2) for driving a rotating assembly (3) extending through an aperture (4) into a liquid to be tested (1) and measuring the shear forces imparted by said liquid (1) to the rotating assembly ...	07/11/2006
6959103	Displacement sensor having a display data output Provided is a displacement sensor which allows at least part of the data used from the time of obtaining an image until the time of computing the displacement can be readily verified. In a displacement sensor for automatically extracting a coordinate of a measuring ...	10/25/2005
6936471	Instrument for high throughput measurement of material physical properties and method of using same An apparatus and method for screening combinatorial libraries of materials by measuring the response of individual library members to mechanical perturbations is described. The apparatus generally includes a sample holder for containing the library members, an array...	08/30/2005
6931915	Wide range dynamic rheometer A rheometer includes a holder assembly for coupling a test specimen to a motor assembly to effect rotational strain in the test specimen while enabling the determination of axial displacement effected by the test specimen normal to the direction of the rotational st...	08/23/2005
6776028	Induction sensor viscometer A rotational viscometer includes a cylindrical bob attached to a bob axle, a concentric sleeve exterior of the bob, a motor for inducing rotation in the sleeve, a biasing spring attached to the bob axle for resisting axle rotation, and a measurement system comprisin...	08/17/2004
6336357	Method and apparatus for sealing test materials An improved method and apparatus for measuring the properties of thermoset plastics and viscoelastic materials. The present invention includes a seal member which inhibits the release of sample material from the die cavity of a test instrument. As a resul...	01/08/2002
6330826	Dynamic sag monitor for drilling fluids An apparatus and a method are described for measuring the sag properties of a drilling fluid by using a conically or frustro-conically shaped inner body and an outer body having an opening with contours closely matching those of inner body such that in co...	12/18/2001
6250136	Molten glass viscosity and/or level meter A device for the on-line measurement of viscosity and/or level of molten glass, converting the values of these variables into proportional electrical signals. The device comprises one sensor head connected to an electronic control unit and to a data proce...	06/26/2001
6070457	Viscometer The invention comprises a viscometer for indicating a liquid viscosity in terms of a measured rotational deflection imparted upon a support structure for supporting a bob within the liquid, which has a bob assembly unit suspended between the fixation poin...	06/06/2000
5777212	Spring relaxation method and rotary viscometer for measuring rheological flow properties of a liquid sample by the method A rotary viscometer has a control mode for measuring the viscosity of a liquid sample with a high viscosity or a high yield value in an ultra-low shear rate range using a spring relaxation method. In this rotary viscometer, a pivot protecting device attai...	07/07/1998
5763766	Viscometer The invention comprises a viscometer which has a bob assembly unit suspended between the fixation points for a torsion wire. The torsion wire runs through a tube, which is connected to the bob. The tube has cutouts so that it may rotate in response to rot...	06/09/1998
5686660	Consistency transmitter The invention relates to concentration measurement transmitters, more specifically to an arrangement for a static, blade-type transmitter, which includes a blade active in the medium to be measured and suspended by a spindle such that shear force moment a...	11/11/1997
5600058	Rotating consistency transmitter and method A rotating consistency transmitter and method of measuring the viscosity, consistency, concentration or the rheological properties of a flowing multi-purpose material in a pipeline by measuring the torque acting on a rotating shaft, which at one end is dr...	02/04/1997
5535619	Pressurized viscometer Pressurized viscometer (10) with fluid holder (12) rotatable by a motor (M) and gearing (50) to shear a tested fluid F thus imparting torque to a spindle assembly 32 mounted via a flexural mount (rods TR) and having a read-out rod or wire (40) with an adj...	07/16/1996
5365777	Rheometer with flow diverter to eliminate end effects A rheometer comprises a thin-walled bob having two ends, adjacent at least one of which ends there is disposed a respective flow diverter plate to eliminate adverse end effects caused by swirling fluid in the rheometer....	11/22/1994
5357783	Dynamic shear rheometer and method An improvement in a rheometer and the method for measuring rheological properties of a viscoelastic test specimen at different temperatures, at which different temperatures the viscoelastic properties exhibit a relatively wide difference, wherein the test...	10/25/1994
5350567	Centrifugal fluidizing granulator for powder coating granulation The centrifugal fluidizing granulator for powder coating granulation has a sensor for detecting changes of viscosity of the growing particles by means of a load cell or a displacement detector; and output signal of the sensor is compared with the data sto...	09/27/1994
5331844	Method and device for measuring the viscosity of a flowing fluid A device for measuring the viscosity of the fluid flowing in a closed passage includes a rotor whose speed of rotation is directly dependent on the rate of flow of the fluid. The rotor is connected to an activatable and deactivatable brake means which has...	07/26/1994
5287732	Rotary viscosimeter A rotary viscosimeter has a control mode for measuring the viscosity of a liquid by a spring relaxation method and a control mode for measuring the viscosity by rotating a rotor 6a at a constant speed. In this rotary viscosimeter, a driving power is trans...	02/22/1994
5271266	Dynamic shear rheometer and method An improvement in a rheometer and the method for measuring rheological properties of a viscoelastic test specimen at different temperatures, at which different temperatures the viscoelastic properties exhibit a relatively wide difference, wherein the test...	12/21/1993
5201214	Rotary viscosimeter having pivot protection apparatus A rotary viscosimeter includes a rotor driven to rotate in a liquid, the viscosity of which is to be measured. A first drive shaft or rotor shaft supports the rotor and transmits a rotary driving force to the rotor. A rotary driving apparatus has a motor ...	04/13/1993
4765180	Viscometer A viscometer in which the angular position of an element responsive to the viscosity of a liquid, the viscosity of which is to be monitored, is sensed by a magnetic resistive sensor adapted to supply intermittent electrical signals to an electronic means ...	08/23/1988
4648263	Support and centering attachments for sensitive viscometers A cylindrical support and centering device for a sensitive viscometer comprises a hollow cylindrical support member open at opposite ends. The viscometer is supported on the upper end with its cylindrical pivot housing slip-fitted into the upper end in sn...	03/10/1987
4602502	Wave speed meter A wave speed meter comprises a pair of relatively rotatable, concentric cylinders with a gap between the cylinders to define a chamber. A viscoelastic fluid is placed in the chamber, and one of the cylinders is suddenly rotationally displaced causing a sh...	07/29/1986
4571988	Apparatus and method for measuring viscosity The present invention is directed to an apparatus and method for measuring the viscosity of a fluid. This apparatus and method is particularly useful for the measurement of the viscosity of a liquid in a harsh environment characterized by high temperature...	02/25/1986
4534209	Atmospheric consistometer An apparatus is provided for determining the consistency of a cement slurry under varying temperature and time conditions. A liquid containing vessel includes a shaft extended from the bottom rotated by a motor supported exteriorally of the vessel. Within...	08/13/1985
4499753	Rotational viscometer for high-pressure high-temperature fluids The invention is a novel rotational viscometer which is well adapted for use with fluids at high temperatures and/or pressures. In one embodiment, the viscometer includes a substantially non-magnetic tube having a closed end and having an open end in comm...	02/19/1985
4448061	Viscometer with a continuously variable electronic readout A viscometer has an element to be immersed in a liquid the viscosity of which is to be monitored. The element is continuously rotated through a resiliently yieldable connection with the stator of a transducer rotated in a constant, selected rate. The roto...	05/15/1984
4373147	Torque compensated electric motor An electric motor having a first rotor on an output shaft, a first stator pivotally mounted to a housing, a second rotor mounted to the first stator and a second stator mounted to the housing. The second stator is driven with a control signal which is a f...	02/08/1983
4347734	Rotary viscometer In a rotary viscometer comprising a variable speed drive motor including a speed indicator, such as a tachogenerator or a similar device, and a measuring shaft driven by an output shaft of a rotor of said motor and carrying a measuring member immersible i...	09/07/1982
4299118	Viscometer An improved rotational viscometer is provided, having a base, a housing, and one and only one adjustable support leg supporting the housing from the base. The support leg provides for adjustment of the length of the leg and provides for alignment of the h...	11/10/1981
4240286	Viscosimeter A viscosimeter for measuring the viscosity of liquids and, in particular, viscous material such as polyester resins and the like which includes a rotatably driven cup in which the liquid sample to be measured is introduced and heated and a torsion wire an...	12/23/1980
4077252	Apparatus for the opto-electrical determination of a measured value An apparatus for the opto-electrical determination of a measured value or magnitude at a viscosimeter, especially at a rotational viscosimeter, wherein there is provided a rotatable body immersible in the medium to be measured and connected with the rotor...	03/07/1978

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Class 73/54.33 - By measuring angular displacement