By Measuring Angular Displacement Patents (Class 73/54.33)
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Patent number: 11016013Abstract: An apparatus for measuring blood coagulation data, and a use method and calibration method thereof are disclosed. The apparatus comprises: a movable support part (101), a fixed support part (102), a connection part (103), a rotary shaft (104), a magnet (105), a Hall element (106), and a processing unit (107).Type: GrantFiled: May 2, 2017Date of Patent: May 25, 2021Assignee: NEOTEK BIOSCIENCE CO., LTD.Inventors: Bangzhong Yu, Feng Jiang
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Patent number: 10823656Abstract: Instrumentation embraces an at least partially automated rotational tapered bearing simulator viscometer having electronic control and/or monitoring that includes task unit electronics, which includes a task unit electronics interface. With or without such electronics, the instrumentation may include a particular component configuration and/or employ at least one particular material. Further feature(s) may be extant.Type: GrantFiled: September 21, 2018Date of Patent: November 3, 2020Assignee: TANNAS COMPANYInventors: Sarah R. Nuss-Warren, Douglas J. Wirsing, Derrick D. Hilliker, Theodore W. Selby, Jonathan C. Evans, Michael T. Kelly, Robert Culver, Fernando Moreira Mendes
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Patent number: 10801938Abstract: A viscometer capable of measuring a viscosity in high precision by increasing a transmission efficiency of a rotational torque while simplifying a structure and facilitating a down-sizing is provided. A viscometer includes: a hollow shaft motor; a needle shaft piercing through a hollow driving shaft of the hollow shaft motor and having an upper end side and a lower end side supported to be rotatable; a spring configured to transmit a driving force of the hollow shaft motor to the needle shaft; a spindle attached to the lower end side of the needle shaft; and a phase difference detection unit configured to detect a rotational phase difference between the hollow driving shaft 4 and the needle shaft.Type: GrantFiled: January 14, 2016Date of Patent: October 13, 2020Assignee: ATAGO CO., LTD.Inventors: Hideyuki Amamiya, Yoshinori Nakajima
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Patent number: 9274038Abstract: A rheometer instrument including a stationary frame, a sleeve suspended from the frame, a bob suspended within the sleeve, a cross-spring pivot suspending the bob from the stationary frame, and a force rebalance system for effecting the rotational displacement of the bob with a torque. The force rebalance system includes an arm attached to the movable portion of the cross-spring pivot, a rotational position sensor in close proximity to the arm for measuring the rotational displacement and angular frequency of the arm, and a force actuator positioned to apply force to the arm. The rheometer instrument may be used to calculate the rheological properties of Newtonian and non-Newtonian fluids.Type: GrantFiled: February 23, 2012Date of Patent: March 1, 2016Assignee: HALLIBURTON ENERGY SERVICES, INC.Inventors: Robert J. Murphy, Dale E. Jamison
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Patent number: 8884636Abstract: Disclosed is a sensor that can accurately detect displacement and prevents the phenomenon of a contact section between a shaft member and a sliding element receiver being shifted. The sensor comprising: a case having a through hole; a resistance substrate fixed at an inside of said case; a shaft member having a first end portion which is one end of the shaft member placed within said case and a second end portion which is other end of the shaft member exposed to an outside of said case from said through hole, said shaft member being placed at said through hole in a movable manner in an axial direction; and a sliding element receiver having a bearing end contacting with said second end portion of said shaft member, and attached with a brush sliding together with said resistance substrate, said sliding element receiver being capable of moving relatively against said resistance substrate with said shaft member. A hemispherical end face is formed at said first end portion.Type: GrantFiled: June 13, 2011Date of Patent: November 11, 2014Assignee: Eagle Industry Co., Ltd.Inventor: Mikio Nitta
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Publication number: 20140047904Abstract: Viscosity or rheology measuring instrument utilizing Hall Effect or like magnetic coupling with parts mounted on driving and driven rotational assemblies.Type: ApplicationFiled: August 7, 2013Publication date: February 20, 2014Applicant: Brookfield Engineering Laboratories Inc.Inventor: Alex Mak
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Patent number: 8383045Abstract: The present invention is directed to a measuring unit, for measuring characteristics of a sample liquid, comprising a support member, having at least one upper bearing arm, with an upper bearing unit, at least one lower bearing arm, with a lower bearing unit, and a base, for being attachable to a respective measuring system; a shaft, having shaft toes and being rotatably supported about a rotation axis, by said upper bearing unit, and said lower bearing unit, wherein said upper bearing unit, said lower bearing unit, and said shaft toes form toe bearings, respectively; an interface member, having a detecting element, and a drive element, said interface member, being fixed on said shaft, and being connected to a coupling shaft, with a probe connector section, for measuring characteristics of said sample liquid; wherein said interface member, and the coupling shaft, are coaxially aligned with said shaft.Type: GrantFiled: January 15, 2010Date of Patent: February 26, 2013Assignee: C A Casyso AGInventors: Axel Schubert, José Javier Romero-Galeano, Max Kessler
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Patent number: 8375771Abstract: Viscometer (80) with a closed bottom rotor assembly (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 bearings (22 and 18) inside rotor assembly (51). An upper chamber (96) located in the upper portion of rotor assembly (51) is at least partially filled with sample and communicates pressure with lower portion of rotor assembly (51) and rotor top via small gap (106) and small gap (110). A spiral spring (70) restricts the rotation of bob shaft (24). Magnetometer (10) measures the angular position of a top magnet (72) connected to the top of bob shaft (24). This angular position information is further converted to the viscosity of the tested fluid.Type: GrantFiled: May 21, 2010Date of Patent: February 19, 2013Inventor: Hongfeng Bi
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Patent number: 8322195Abstract: An apparatus and a method for measuring the coagulation characteristics of a test liquid (1), in particular of a blood sample, is provided. According to the present invention standardized geometrical dimensions of a cup (2) and a respective pin (3) are modified for receiving maximum elasticity signal per volume test liquid without resulting in irreversible inelastic effects. In particular, the test liquid gap (8) between the cup (2) and the pin (3) is reduced, the diameter of the cup (2) and the pin (3) are increased and/or the geometry of test liquid accommodating portions (7; 10; 10?) are optimized for increasing the ratio between signal amplitude and a needed amount of test liquid (1) compared to standardized equipment.Type: GrantFiled: December 18, 2007Date of Patent: December 4, 2012Assignee: C A Casyso AGInventors: Martin Glauner, Axel Schubert, Max Kessler
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Patent number: 8230723Abstract: A couette viscometer used to determine the rheological properties of Newtonian or non-Newtonian solid-laden or non-solid-laden fluids used as completion or treatment fluids in oil and/or gas wells. The instrument is capable of measuring the properties of a heated, e.g., 600° F./316° C., and pressurized sample, e.g., 30,000 psig/207 MPa, at a variety of temperatures, pressures, and shear rates. The pressure vessel is mounted in the chassis of the instrument and the vessel plug containing the viscometer components and sample may be removed as an assembly. This arrangement reduces the mass of the plug assembly, eliminating the need to transport the pressure vessel and assists in separating the sample from the pressurizing fluid. Ultimately, this arrangement improves the usability, convenience and maintenance associated with operating the instrument.Type: GrantFiled: September 19, 2008Date of Patent: July 31, 2012Assignee: Chandler Instruments Company, LLCInventors: John Jeffery Moon, Brian Roland Ainley
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Patent number: 8132446Abstract: Disclosed herein is a property measurement apparatus including: a first plate installed in a state of being rotatable and/or vibratable; and a second plate placed to face the first plate and provided with an impedance measurement section, wherein a stress caused by a distortion generated by rotating or vibrating the first plate to serve as a distortion given to a sample provided in a gap between the first and second plates is measured, and at the same time, the impedance measurement section measures the impedance of the sample.Type: GrantFiled: May 27, 2009Date of Patent: March 13, 2012Assignee: Sony CorporationInventor: Yoshihito Hayashi
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Publication number: 20110167901Abstract: Systems and methods for direct and indirect measurement of the density of a fluid which exhibits sag characteristics is disclosed. The sag measurement system includes a test container for holding a fluid mixture to be analyzed and a suction port on the test container. A pump is coupled to the suction port for circulating the fluid mixture from the test container through a circulation loop. A measurement device is coupled to the circulation loop and a return port directs the fluid mixture from the circulation loop back to the test container at substantially the same vertical location as the suction port. The fluid mixture flowing through the circulation loop passes through the measurement device before returning to the test container through the return port. The measurement device is operable to monitor the particle distribution of the fluid mixture as it changes due to gravity.Type: ApplicationFiled: January 11, 2010Publication date: July 14, 2011Inventors: Dale E. Jamison, Robert J. Murphy
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Patent number: 7860681Abstract: Combination is disclosed for deriving and displaying the full complement of nine dynamic parameters associated with a mechanical motion transmission system; the parameters comprise: (1) angular displacement, (2) angular velocity, (3) angular acceleration, (4) moment of force (i.e. torque), (5) kinetic energy, (6) work, (7) power, (8) momentum and (9) impulse. Quasi-instantaneous, absolute measurements are derived from elapsed-time measurements between successive sensing of fixed, equal, position events such as electric pulses generated by an incremental shaft encoder. The parameters are displayed on the X and Y axes of a Cartesian or other suitable graph where the X-axis (i.e. the independent axis) indicates the angular displacement of the encoder expressed as a succession of fixed, equal position events in the units of radians. The Y-axis (i.e. the dependent axis) indicates the absolute value of the parameters.Type: GrantFiled: April 23, 2008Date of Patent: December 28, 2010Inventors: Stanley R. Schaub, Pieter Van Vliet
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Patent number: 7752894Abstract: The method measures consistency with a rotating consistency meter. The method comprises chopping with the teeth of a chopper structure optical radiation transmitted by an optical source to an optical detector while the shafts of the rotating consistency meter rotate. In addition, a chopper reference of the chopper structure chops optical radiation to form at least one reference pulse independent of the swivel between the shafts. The duration of each reference pulse is measured when measuring consistency. The change in the reference pulse is defined by comparing the duration of the measured reference pulse with the duration of the predefined reference pulse. The durations of the measuring pulses are corrected according to the change in the duration of the reference pulse.Type: GrantFiled: April 27, 2006Date of Patent: July 13, 2010Assignee: Metso Automation OyInventors: Lauri Uusivirta, Juhani Kangas
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Publication number: 20090293595Abstract: Disclosed herein is a property measurement apparatus including: a first plate installed in a state of being rotatable and/or vibratable; and a second plate placed to face the first plate and provided with an impedance measurement section, wherein a stress caused by a distortion generated by rotating or vibrating the first plate to serve as a distortion given to a sample provided in a gap between the first and second plates is measured, and at the same time, the impedance measurement section measures the impedance of the sample.Type: ApplicationFiled: May 27, 2009Publication date: December 3, 2009Applicant: Sony CorporationInventor: Yoshihito Hayashi
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Patent number: 6959103Abstract: 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 point from an image obtained by using an imaging device according to a prescribed measuring point extraction algorithm, and computing a desired displacement from the automatically extracted measuring point coordinate, the sensor is further provided with the function to edit data used from the time of obtaining the image until the time of computing the displacement for use as display data for an image monitor.Type: GrantFiled: January 29, 2001Date of Patent: October 25, 2005Assignee: Omron CorporationInventors: Tatsuya Matsunaga, Masahiro Kawachi
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Patent number: 6951127Abstract: Viscometer (80) with a sample cup (42) rotatable by a pulley (26) and a timing belt (30) to shear a tested fluid thus imparting torque to a bob (44) mounted on a shaft (10) supported via a frictionless bearing (58), an optical distance sensor assembly (12) measures the distance to an arm (70) which is connected to the top of shaft (10). This distance information is further converted to the viscosity of the tested fluid.Type: GrantFiled: March 31, 2003Date of Patent: October 4, 2005Inventor: Hongfeng Bi
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Patent number: 6931915Abstract: 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 strain, the holder assembly having a first member coupled to the test specimen, a second member coupled to the motor assembly, and a suspension arrangement coupling the first member with the second member for simultaneous maximum resistance to relative rotational displacement between the first and second members and minimum resistance to relative axial displacement between the first and second members.Type: GrantFiled: June 10, 2003Date of Patent: August 23, 2005Assignee: TA InstrumentsInventors: Ronald F. Garritano, John P. Berting, Paul G. Mode
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Publication number: 20040250605Abstract: 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 strain, the holder assembly having a first member coupled to the test specimen, a second member coupled to the motor assembly, and a suspension arrangement coupling the first member with the second member for simultaneous maximum resistance to relative rotational displacement between the first and second members and minimum resistance to relative axial displacement between the first and second members.Type: ApplicationFiled: June 10, 2003Publication date: December 16, 2004Inventors: Ronald F. Garritano, John P. Berting, Paul G. Mode
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Patent number: 6776028Abstract: 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 comprising an electric field transmitter, an electric field receiver and a rotor extending intermediate the transmitter and receiver. The rotor is attached to the bob axle so that rotation of the bob axle and the rotor presents a measurable deviation of the electrical field received by the electrical field receiver. A processor calculates the angle of displacement of the bob from that sine and cosine of the received electrical field and transmits readable output in the form of a sample viscosity value to a display.Type: GrantFiled: April 29, 2003Date of Patent: August 17, 2004Assignee: OFI Testing Equipment, Inc.Inventor: Richard F. Lukay
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Publication number: 20040123650Abstract: The present invention provides systems and methods for screening a library of material samples for a rheological property such as viscosity or elasticity. Accordingly, a library of material samples is can be provided in a substantially liquid form. The library is contacted with at least one probe for applying a stimulus to the material samples such as by moving the at least one probe within the samples. A response such as resistance to the motion of the probe is monitored and can be related to a rheological property of the samples.Type: ApplicationFiled: September 16, 2003Publication date: July 1, 2004Applicant: Symyx Technologies, Inc.Inventors: Oleg Kolosov, Leonid Matsiev
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Patent number: 6336357Abstract: 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 result, sufficient sample material is maintained within the die cavity when pressure is applied to the material. Accordingly, an appropriate shearing force can be applied to the sample material to obtain torque measurements. Moreover, by inhibiting the release of sample material from the die cavity, sample material is prevented from coming into contact with components of the test instrument outside the die cavity, which in turn may distort or invalidate measurements of torque.Type: GrantFiled: March 15, 1999Date of Patent: January 8, 2002Inventors: Henry Pawlowski, Xiaofeng Xu
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Patent number: 6330826Abstract: 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 conjunction inner and outer body are separated by a narrow gap defining a conically or frustro-conically volume with a vertex; a motor drive for rotating the inner body with respect to the outer body; and a sampling access to determine the density of said drilling fluid within a localized part of said volume, wherein said sampling is permanently located in vicinity on said vertex.Type: GrantFiled: February 8, 2000Date of Patent: December 18, 2001Assignee: Schlumberger Technology CorporationInventor: Gerald H. Meeten
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Patent number: 6250136Abstract: 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 processing unit. The sensor head comprises a fixed metallic core with external fins for air cooling, laid across by two vertical parallel shafts designed for torsional vibration to which are fixed, at the lower extremities, refractory rods partially coated with platinum and, at the upper extremities, the rotors of the two electrical motors which can produce torsional vibration of the vertical shafts. To each shaft are fixed two discs, connected mechanically to the fixed core by three fine rods disposed at 120° angles around the shaft. In operation, the sensor head is installed on a rigid structure fixed over the channel where the molten glass flows, with both rods partially immersed into the melt in order to be protected by the platinum coatings.Type: GrantFiled: February 26, 1999Date of Patent: June 26, 2001Inventor: Virgilio dos Reis Cardoso Igreja