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A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.

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Class 73/54.32 - By measuring an opposed drag force


Subclass of Class 73 - Measuring and testing
Definition: Subject matter wherein the determination is made by measuring
No. of patents: 48
Last issue date: 05/01/2007


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NumberTitleIssue Date
7211923Rotational motion based, electrostatic power source and methods thereof
A power system includes a member with two or more sections and at least one pair of electrodes. Each of the two or more sections has a stored static charge. Each of the pair of electrodes is spaced from and on substantially opposing sides of the member from the othe...
05/01/2007
7207210Multi-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
7137290Rotary 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
7073372Online 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
7055376Method and a pump apparatus for the generation of an adjustable, substantially constant volume flow of a fluid and a use of this method
A method and a pump apparatus are provided for the generation of an adjustable, substantially constant volume flow of a fluid by means of a pump apparatus, wherein the fluid (5) is forwarded by the pump apparatus (1) from a reservoir (2) into a ...
06/06/2006
7051581High throughput rheological testing of materials
A library of materials is screened for viscosity. A library of materials is provided. The library is contacted with at least one capillary for applying a force through the materials. The relative flow resistance of the materials is measured in response to the force;...
05/30/2006
7017393Rotary 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...
03/28/2006
6854349Device for determining the end of the processing time for hardening masses
A device is provided which determines the end of the processsing time for hardening masses, in particular dental molding masses. The device comprises a display unit and a sensor unit which record the change in at least one of the rheological properties of the mass. ...
02/15/2005
6836362Method for the rapid determination of the optical quality of combinatorial libraries
This invention provides methodology for the measurement of both low and high levels of scattered radiation produced by decorative and barrier coatings and plastics. Measurements of low levels are especially important for coatings used in automotive applications. The...
12/28/2004
6769292High throughput rheological testing of materials
A library of materials is screened for viscosity. A library of materials is provided. The library is contacted with at least one capillary for applying a force through the materials. The relative flow resistance of the materials is measured in response to the force;...
08/03/2004
6463793Extended range Scanning Brookfield techniques
Physical property of a liquid sample to include a viscometric and/or rheological property if not a structural property such as gelation and/or crystallization can be determined with a rotating viscometer employed in a Scanning Brookfield technique. The vi...
10/15/2002
6282948Rotary viscometry with a low heat-transmissible spindle
Low heat-transmissible spindle for rotary viscometry includes an elongate, radially balanced, straight shaft made of a suitably stiff material having a low heat-transmission value, with a head monolithic with the shaft which can contact and interface with...
09/04/2001
6151957Measuring device comprising an excitable frequency gauge
A device for measuring a parameter such as the mass concentration or the viscosity of a fluid medium such as a suspension or a liquid, including a rotor for rotation in the medium, a drive motor, a drive transmission with a drive shaft for the rotor, and ...
11/28/2000
5847294Apparatus for determining powder flowability
Apparatus for determining flowability of a powder by sensing powder avalanching includes a sample drum having a generally cylindrical sample chamber for holding a powder sample, a support frame including a drum shaft for supporting the sample drum for rot...
12/08/1998
5829754Sealing and flow inducing hub assembly
A hub assembly with improved sealing and anti-clogging properties comprising a housing body with a central, longitudinal aligned bore. In the embodiment described herein, a rotating shaft unit on a consistency transmitter is disposed inside the central bo...
11/03/1998
5773712Method for measuring viscosity and viscosimeter
A method for measuring viscosity and a viscosimeter are disclosed. Thus, a rotary measuring head (3) is introduced into a liquid (1), and the torque exerted on the measuring head (3) is sensed. The measuring head (3) is rotated at a substantially constant...
06/30/1998
5684247Rotating consistency transmitter impeller and method
An improved impeller for a rotating consistency transmitter and a method of measuring the consistency of pulp slurry flowing in a main pipeline. The impeller includes an intercepting surface designed to minimize the creation of turbulence in pulp slurry a...
11/04/1997
5600058Rotating 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
5546791Rheometer
There is provided a rheometer, comprising a cup for a fluid to be measured, a concentric rotor and stator arrangement, and a circuit for circulating the fluid which includes a pump for providing in pulsatile, non-laminar flow in the cup. By using the pump...
08/20/1996
5531102Viscometer usable in situ in large reactor vessels
A viscometer (10) has a spindle (12) mounted on a rotatable shaft (14) which is, in turn, contained in a tubular rotatable shaft (16) which is within a fixed hollow shaft (18). The latter is suspended from a flange (20) that mates with a flange (22) of an...
07/02/1996
5509297Viscometer calibration
A rotational viscometer instrument of the type having a rotor driven to rotate about an axis, the rotor for contact with a fluid, the viscosity or related property of which can be measured by measuring torque or drag on the rotor rotating in contact with ...
04/23/1996
5503003Portable viscometer
Viscometer with a spindle (4) mounted on a shaft (8) supported via axially spaced, e.g. three inches, bearings (12,14) and driving a transducer rotary member via a stiff rotationally resilient member, the latter providing substantially all the resistive t...
04/02/1996
5357785Method and device for determining rhenological properties
A method and device for the measurement of rheological properties of high density slurry materials and in particular high density mill tailings. A sample of the tailings is placed within a mixing tub, with either a concentric paddle or a planetarily movab...
10/25/1994
5315864Start/stop method to determine static gel strength
A method of determining static gel strength of a fluid in a container comprises: commencing relative movement between the fluid in the container and a member disposed in the fluid in the container so that torque is created; stopping the relative movement;...
05/31/1994
5301541Drag determining apparatus
An apparatus and method for determining the effect of the configuration of an outer surface of an object on the drag of the object. The apparatus comprises a housing, an inner block suspended in the housing, a motor for rotating the housing, and a torquem...
04/12/1994
5163317Apparatus for measuring stress of viscoelastic material
An apparatus for measuring stress of viscoelastic material in which a rotational die and a torque detecting die are provided, an outer cylindrical die is provided around the torque detecting die, the diameter of the rotational die is arranged to be larger...
11/17/1992
4899576Method for testing repeatability of a rheologic system
A method for testing the repeatability of test runs of a rheologic instrument. Such instrument will, typically, include a power shaft and a test chamber. The disclosed method constitutes the step of using a torque transducer to reiteratively compare the r...
02/13/1990
4878377Viscometer apparatus and method
A rotary viscometer includes a rotor member having plural helically staggered mixing blades disposed on the outer surface thereof for thoroughly mixing a quantity of fluid whose viscosity is being measuring during rotation of the rotor member. The viscome...
11/07/1989
4878378Rotating viscometer
A rotating viscometer for a paste is constructed of a rotary member, a stationary member provided in opposition to the rotary member with a small clearance therebetween, said stationary member being displaceable angularly relative to the rotary member, a ...
11/07/1989
4736624Consistometer for analysis of rheological change
A consistometer usable at a work site comprises a stationary receptacle (9) which is placed in an enclosure (3) defined by a consistometer casing (2) and is provided with a stirrer (17) with a rotary drive spindle (18). The casing has an extension (20) in...
04/12/1988
4736593Frozen beverage machine
A frozen beverage machine is provided, comprising a frame containing a horizontally positioned stationary cylinder. A conventional cooling mechanism, typically comprising a compressor, a condenser, and cooling coils around the cylinder cools the cylinder....
04/12/1988
4657871Mixing polymers such as rubber
A method of mixing polymers, especially rubber by (i) deforming the polymer until it is estimated to attain a first predetermined viscosity, (ii) adding filler and deforming the polymer-and-filler mixture until it is estimated to attain a second predeterm...
04/14/1987
4630468Viscometer
A method and apparatus are provided for measuring the viscosity of a fluid medium such as drilling mud. A rotary member is mounted within a housing for free rotation and viscous drag means applies a torque-induced rotation to the rotary member. The rotary...
12/23/1986
4622846Consistency and static gel strength measuring device and method
An appartus and method for testing characteristics of a substance, such as a cement slurry to be used within an oil or gas well, are provided. The apparatus includes a single drive motor which can be actuated in either a dynamic mode or a static mode to m...
11/18/1986
4559812Rheometer and method of use thereof
A rheometer of the type which includes a chamber (26) in which, in use, a sample of rubber or of a synthetic elastomer which is to be tested is held under pressure in contact with a rotor (27), and means for measuring torque applied to the rotor (27) as i...
12/24/1985
4557142Apparatus and method for real-time measurement of drilling fluid properties
A system for real-time measurement of multiple properties of drilling fluids from a single sampling point may comprise: a pump for transferring fluids in the system, the suction of which may be alternately communicated through suction conduits with a rese...
12/10/1985
4537064Method and apparatus for measuring shear modulus and viscosity of a monomolecular film
Instrument for measuring the shear modulus of a monomolecular film comprises a circular trough having inwardly sloping sides containing a liquid for supporting the monolayer on the surface thereof; a circular rotor suspended above the trough such that the...
08/27/1985
4534210Apparatus and method for measuring the viscosity of a liquid
In the method, part of the liquid flow in a circuit is continuously withdrawn. A substantially constant head is established in the liquid drawn off, and at least some of this liquid is allowed to flow under gravity at a constant rate past a rotor rotated ...
08/13/1985
4468953Viscosity and elasticity of a fluid
Disclosed herein is a torsion tube apparatus for making on-line measurements of the viscosity and elasticity of a fluid. The apparatus includes a housing member, an outer cylinder having one end rotatably mounted with respect to the housing member, and a ...
09/04/1984
4375047Torque compensated electrical motor
An electric motor having a cage pivotally mounted at one end to a post interior a housing by a first bearing and at its other end by a second bearing between the exterior of the cage and the interior of the housing. A first stator is mounted to the interi...
02/22/1983
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