US Pat. No. 9,683,929

OPTICAL MEASURING SYSTEM FOR MEASURING OPTICAL POLARIZATION PROPERTIES OF A SAMPLE

Anton Paar GmbH, Graz (A...

1. Optical measuring system for measuring optical polarization properties of a sample, the optical measuring system, comprising:
a light source, adapted to emit measuring light along an optical axis of an analysis beam path of the optical measuring system;
a polarization state generator which is arranged downstream with respect to the light source in the analysis beam path and
configured to provide the measuring light with a defined polarization state;

a sample holder, which is arranged downstream with respect to the polarization state generator in the analysis beam path and
which is designed to accommodate the sample to be measured;

a polarization state analyzer, which is arranged downstream with respect to the sample holder in the analysis beam path and
which is configured to measure the polarization state of the measuring light after passing through the sample;

a mechanical support structure, at which at least the polarization state generator, the sample holder and the polarization
state analyzer are directly attached, wherein the mechanical support structure consists of a solid component; and

a temperature control device attached to the mechanical support structure in such a manner that a sample located in the sample
holder can be indirectly temperature-controlled by the mechanical support structure.

US Pat. No. 9,329,143

METHOD AND APPARATUS FOR INVESTIGATING THE X-RAY RADIOGRAPHIC PROPERTIES OF SAMPLES

Anton Paar GmbH, Graz-St...

1. A method of studying the X-ray properties of samples (3c), wherein X-ray beams scattered at a sample (3c) are recorded by a detector (5) positioned at a distance from the sample (3c), and are evaluated with regard to the sample characteristics; characterized in that at a predetermined distance between
the X-ray source (1) and the detector (5) or between the starting point (2b) of the X-ray beam (10) directed at the sample (3c) and the detector (5), for a predetermined number of successive measurements the distance (S1, S2) between the sample (3c) and the detector (5) is changed and is set at a predetermined different values.

US Pat. No. 10,036,695

VISCOSIMETER

Anton Paar GmbH, Graz-St...

1. A viscometer, comprising:a base frame;
a hollow cylinder mounted in said base frame and rotating about a longitudinal axis;
a rotatably-mounted measuring part through which a fluid being tested flows and disposed within said hollow cylinder;
an electromagnetic drive having a stator and a rotor with which said hollow cylinder being rotatable in said base frame, said stator supported on said base frame and said rotor supported on said hollow cylinder; and
a ring rotor rotatably supported between said stator and said rotor, said ring rotor providing an electromagnetic coupling of said stator with said rotor, said ring rotor being driven by said stator about the longitudinal axis of said hollow cylinder, so that said base frame and said hollow cylinder are mechanically decoupled with respect to said electromagnetic drive, and a predetermined torque is transferable to said hollow cylinder via said electromagnetic drive, while forces acting axially and radially on said hollow cylinder are simultaneously minimized.

US Pat. No. 9,448,161

OPTICAL DEVICE, PARTICULARLY A POLARIMETER, FOR DETECTING INHOMOGENEITIES IN A SAMPLE

Anton Paar GmbH, Graz (A...

1. An optical device for analyzing a liquid sample, comprising:
a light-generating system for generating light for surface irradiation of the sample through an inlet window of a cuvette,
wherein the inlet window traverses a longitudinal axis of the cuvette;

a detection system arranged to intercept the surface irradiation after passage through the sample;
a telecentric optical system with a lens arranged between the sample and the detection system and with an aperture diaphragm
in a focal plane of the lens between the lens and the detection system.

US Pat. No. 9,702,809

TRIBOMETER, RHEOMETER, MODULE AND A METHOD FOR TRIBOLOGICAL MEASUREMENTS

Anton Paar GmbH, Graz-St...

1. An apparatus selected from a group consisting of modules for a rheometer and tribology cells for the rheometer, the apparatus
comprising:
a holder for holding at least one sample under test;
at least one spring having a holding area for supporting said holder or the one sample;
a carrier for inserting into a drive of the rheometer or a mounting part of the rheometer or said carrier can be connected
to the rheometer, said carrier bearing said at least one spring;

said spring and said holder or said holding area are regarded as parts of a mechanical oscillation system having oscillation
properties;

an adjustment unit configured to adjust the oscillation properties of said mechanical oscillation system;
a clamping component; and
at least one plate supported by said carrier and from said plate said at least one spring departs in a form of a flat spring
aligned parallel to said plate, said plate in a free end area and said holder supports the sample, wherein said clamping component
provided for said flat spring, with said clamping component a body of said spring is loadable and securable in respect to
a plate distance from different, continuously changeable installation positions, wherein said clamping component having a
form of spokes rotatable about said holder, which can be applied against said flat spring aligned in a circumferential direction
of said plate and can be fixed in different installation positions.

US Pat. No. 9,574,983

METHOD OF DETERMINING MEASUREMENT DATA OF SAMPLES AND RHEOMETER

Anton Paar GmbH, Graz-St...

1. A method for determining measurement data of samples, which comprises the steps of:
providing a rotation rheometer and a linear DM(T)A analysis unit, the rotation rheometer having units for measuring and/or
adjusting a normal force exerted by or on a measurement shaft and at least one of a speed, a deflection angle or a torque
of the measurement shaft, the linear DM(T)A analysis unit having an adjustment rod and units for measuring at least one of
a tensile force, a pressure force, a position or a feed movement of the adjustment rod, the measurement shaft of the rotation
rheometer being rotatably mounted in a bearing, and the adjustment rod of the linear DM(T)A analysis unit being linearly movably
mounted in a further bearing;

disposing a sample to be examined between opposite measurement parts including a first measurement part supported by the measurement
shaft and a second measurement part supported by the adjustment rod; and

compensating for rotational forces or torques transmitted via the sample from the measurement shaft of the rotation rheometer
to the adjusting rod of the linear DM(T)A analysis unit, when obtaining measurement data with the linear DM(T)A analysis unit,
and, when obtaining measurement data by the rotation rheometer, for the tensile force, the pressure force or linear adjustment
forces transmitted via the sample from the adjustment rod to the measurement shaft during a determination and/or analysis
of the measurement data.

US Pat. No. 9,063,083

METHOD AND SENSOR DEVICE FOR MEASURING A CARBON DIOXIDE CONTENT IN A FLUID

Anton Paar GmbH, Graz-St...

1. A method of measuring a CO2 content in a fluid, the method which comprises:
providing an ATR sensor with a sensor housing defining an interior space and a plurality of sensor components disposed within
the sensor housing, the sensor components including an electromagnetic radiation source for emitting in a predefined wavelength
range, a reflection body permeable to radiation and contactable with the fluid to be evaluated, a detector for detecting reflected
radiation, and additional elements for conducting the measurement and for operation;

prior to sealing the sensor housing of the ATR sensor, introducing CO2 getter material into at least one element selected from the group consisting of the sensor housing and a receiving space of
an additional housing communicating with the interior space of the sensor housing; and

subsequently sealing at least one space selected from the group consisting of the interior space and the receiving space in
a gas-tight manner;

wherein the introducing step comprises introducing the CO2 getter material at least in an amount that can take up CO2 degassing from the sensor components and other components contained in the sensor housing or the additional housing over a
period of time which corresponds at least to an expected service life of the ATR sensor or at least to a period until at least
one housing selected from the group consisting of the sensor housing and the additional housing is opened for at least one
purpose selected from the group consisting of required maintenance and adjustment purposes.

US Pat. No. 9,261,446

ROTATIONAL VISCOMETER

Anton Paar GmbH, Graz-St...

1. A rotational viscometer, comprising:
a measuring shaft being rotated at a specified, rotational speed and having an upper shaft part and a lower shaft part;
a motor for driving said measuring shaft;
a measuring part carried by said measuring shaft and for being lowered into a sample;
a detection unit for determining a torsion angle of said measuring part relative to a driven part of said measuring shaft;
a twistable element incorporated into said measuring shaft between said upper shaft part and said lower shaft part, said twistable
element carrying said lower shaft part of said measuring shaft, which carries said measuring part, said twistable element
being rigid in an axial direction of said measuring shaft;

an evaluation device; and
said detection unit being movable jointly with said measuring shaft and determines a relative twisting or torsion angle between
said upper shaft part disposed on a motor side with respect to said twistable element and said lower shaft part disposed on
a measuring-part side, said detection unit supplying output signals to said evaluation device as a basis for determining a
viscosity of the sample.

US Pat. No. 9,459,219

TEMPERATURE CONTROL CHAMBER FOR COMPACT X-RAY MACHINE

Anton Paar GmbH, Graz (A...

1. A sample temperature control chamber for at least one of a benchtop X-ray machine and a full-protection X-ray machine,
the sample temperature control chamber comprising:
a first chamber part and a second chamber part configured to form a closed chamber;
an integrated temperature control device for controlling a temperature of a sample provided on a sample holder, the integrated
temperature control device comprising a temperature control element;

at least one temperature sensor for acquiring a sample temperature;
a control unit connected to the at least one temperature sensor and configured to control the temperature control element
as a function of the sample temperature to obtain at least one of reaching a predetermined sample temperature and applying
a temperature profile; and

an active cooling system for dissipating heat, wherein the active cooling system comprises at least one of a heat sink and
a fan,

wherein the control unit is provided in the first chamber part, wherein the heat sink and the fan are provided at an outer
surface of the first chamber part and wherein the second chamber part comprises a window which is transparent to X-rays.

US Pat. No. 9,933,377

SYSTEM FOR DETERMINING THE ZETA POTENTIAL FOR CHARACTERIZING A SOLID/LIQUID INTERFACE WITH CONTROLLED PROFILE PRESSURE LOADING

Anton Paar GmbH, Graz (A...

1. A method for determining information being indicative for a zeta potential for characterising an interface between a solid phase and a liquid phase, wherein the method comprises:accommodating the liquid phase in a pressure vessel;
accommodating the solid phase in a measuring cell, which is arranged downstream of and such that it can be brought into fluid communication with the pressure vessel;
arranging a storage vessel downstream of and in fluid communication with the measuring cell;
loading the pressure vessel with a pressure profile with a temporally continuous pressure change in such a manner that as a result liquid phase can be conveyed out of the pressure vessel through the measuring cell into the storage vessel, wherein the interior of the pressure vessel is pressure-decoupled from the environment when the liquid phase flows out of the pressure vessel, and wherein the pressure drops continuously when the liquid phase flows out of the pressure vessel; and
determining the information being indicative for the zeta potential at the measuring cell during the loading of the pressure vessel with the pressure profile.

US Pat. No. 9,465,006

MODULATOR MONITORING DURING MEASURING ELECTROMOBILITY

1. An apparatus for measuring information which is indicative of electromobility in a sample, the apparatus comprising:
a light source configured for generating coherent light;
a modulator arranged for modulating a first part of the generated light;
a sample cell for accommodating the measured sample, configured for applying an electric field to the sample, and arranged
for receiving a second part of the generated light for interaction with the sample in the electric field;

a modulator monitor configured for monitoring the modulator by detecting interference between a first part of the light coming
from the modulator and an unmodulated third part of the generated light;

a light detector arranged separately from the modulator monitor and being configured for detecting interference between a
second part of light coming from the modulator and light received from the sample cell, wherein the detected signal includes
the information which is indicative of electromobility in the sample.

US Pat. No. 10,390,388

MICROWAVE HEATING SYSTEM

Anton Paar GmbH, Graz (A...

1. A microwave heating system, comprisinga bowl,
a dome adapted to be fit to the bowl, such that a volume is formed by the bowl and dome, and
a rotor device adapted to support at least one reaction vessel and being rotatably supported by the bowl, the rotor device comprising
a base plate comprising at least one through-hole, and
at least one tubular member having a longitudinal axis and being adapted to receive the at least one reaction vessel and to be coupled to the base plate in such a way that the longitudinal axis of the at least one tubular member passes through the at least one through-hole such that a portion of the at least one reaction vessel when present extends beyond the base plate,
wherein the base plate and the at least one tubular member comprise metal, and
wherein the bowl is adapted to be connected to a microwave generating unit, the microwave generating unit supplying a microwave field to the volume, the base plate and the at least one tubular member configured to attenuate the microwave field in a region between the rotor device and the dome and above a sample when present in the at least one reaction vessel within the at least one tubular member compared to a region between the bowl and the base plate of the rotor device, the microwave field propagating from the region between the bowl and the rotor device into the at least one tubular member and the at least one reaction vessel to heat the sample by microwave absorption.

US Pat. No. 10,031,057

ROTATIONAL RHEOMETER FOR MEASURING POWDERY OR GRANULAR MATERIALS

Anton Paar GmbH, Graz-St...

1. A rotational rheometer for measuring powdery or granular materials, the rheometer comprising:a measuring container for receiving a powdery or granular material to be measured and a cover for said measuring container;
a measuring body held on a measuring shaft, wherein said measuring body and said container are rotatable relative to one another, and wherein said measuring shaft is guided through said cover without contact;
a sealing device disposed to seal a bearing gap or a passage of said measuring shaft in or through said cover, said sealing device including a fluid seal with a sealing fluid supply line and at least one geometric seal forming a powder barrier with said fluid seal;
said sealing device including a shield carried on said measuring shaft inside said measuring container and forming said geometrical powder barrier, said shield having a surface extension extending at right angles to said measuring shaft beyond an opening on all sides of said passage;
at least one or more exhaust ports of said sealing fluid supply line formed on an underside of said cover in a vicinity of said passage of said measuring shaft and above said shield, or an air inlet issuing into said passage below a powder barrier disposed inside said cover; and
an evaluation unit disposed outside said measuring container for evaluating measured values received by said measuring shaft.

US Pat. No. 10,145,771

METHOD, DEVICE AND COMPUTER MEDIUM FOR DETERMINING THE DENSITY OF LIQUIDS

Anton Paar GmbH, Graz-St...

1. A method for determining a density of liquids, which comprises the steps of:providing a measuring device having a flexural resonator, the flexural resonator is accommodated in a housing of the measuring device, the measuring device further having at least one sensor for measuring at least one environmental parameter of the flexural resonator and of the measuring device that influences a measurement to be performed, the measuring device further having a condition monitoring unit;
feeding measured values from the sensor to the condition monitoring unit, the condition monitoring unit having a memory unit with stored forecasts and prediction algorithms for environmental parameters to be expected in a course of a measurement and for operating states to be expected, and by using the condition monitoring unit, on a basis of the stored forecasts and the prediction algorithms and depending on at least one of present values or expected values of the environmental parameters and initial measured values or conditions selected for the measurement, it is determined whether the measurement can be carried out under at least one of selected trial conditions or initial values present at a start of measurement and/or with parameter values selected or expected in the course of the measurement, without any impairment or with a permissible impairment by expected or forecast changes in the environmental parameters; and
wherein by using the condition monitoring unit, the measuring device is checked for safe conditions meeting a standard in an interior of the measuring device and in an environment of the housing for the flexural resonator including the housing being in an open state.

US Pat. No. 9,528,933

ADJUSTING SAMPLE HOLDER ORIENTATION FOR SYMMETRIC INCIDENT BEAM AND SCATTERED BEAM GEOMETRY TO COMPENSATE FOR REFRACTION INDEX RELATED DISTORTIONS

Anton Paar GmbH, Graz (A...

1. An apparatus for analyzing a sample, the apparatus comprising:
an electromagnetic radiation source configured for generating an incident electromagnetic radiation beam;
a sample container configured for accommodating the sample to be analyzed, shaped to have a symmetry axis, arranged for receiving
the incident electromagnetic radiation beam to propagate into the sample container for interaction with the sample, and arranged
for enabling a scattered electromagnetic radiation beam, which is to be detected, to propagate out of the sample container;
and

an electromagnetic radiation detector configured for detecting the scattered electromagnetic radiation beam to be detected
which is received from the sample container;

wherein the sample container is tilted with regard to a direction of the incident electromagnetic radiation beam so that an
incident trajectory of the incident electromagnetic radiation beam directly before propagating into the sample container up
to the symmetry axis is symmetric with respect to a scattered trajectory of the scattered electromagnetic radiation beam,
which is to be detected, from the symmetry axis up to a position of the scattered electromagnetic radiation directly after
having left the sample container, such that the scattered trajectory outside of the sample container is independent of a refraction
index of the sample container and of the sample; and

wherein the sample container is arranged with regard to a propagation direction of the incident electromagnetic radiation
beam so that:

in a first viewing direction perpendicular to a plane including the symmetry axis of the sample container, the incident trajectory
of the incident electromagnetic radiation beam and the scattered trajectory of the scattered electromagnetic radiation beam
are arranged axially symmetrical to one another with regard to the symmetry axis of the sample container; and

in a second viewing direction along the symmetry axis of the sample container, the incident trajectory of the incident electromagnetic
radiation beam and the scattered trajectory of the scattered electromagnetic radiation beam are arranged axially symmetrical
to one another.

US Pat. No. 9,562,865

METHOD AND APPARATUS FOR ANALYSIS OF SAMPLES

Anton Paar GmbH, Graz-St...

1. A method for examining a sample with radiation emitted from a radiation source selected from the group consisting of a
neutron radiation source and an X-ray radiation source, directed to the sample carried by a sample holder via at least one
beam-forming unit, detected by a detector and evaluated in an evaluating unit, which comprises the steps of:
prior to an examination of the sample, performing, via a control device and actuating devices, at least one of orienting and
positioning components coupled to the actuating devices and selected from the group consisting of the radiation source, the
beam-forming unit, the sample holder, the detector, and a primary beam stop disposed upstream of the detector, in terms of
at least one of a spatial location in relation to at least other ones of the components, in relation to a predefined fixed
point, or in relation to an optical path;

when performing the step of at least one of orienting and positioning the components, outputting actuating signals from the
control device to the at least one actuating drive based on saved adjustment values resulting in an automatic performance
of a sequence of steps that adjust spatial positions, tilts, and rotations of the components in a reproducible way; and

using a radiation intensity measured by the detector or a value derived from the radiation intensity for establishing a control
variable conferred from the control unit to the actuating drives assigned to the components.

US Pat. No. 10,119,895

METHOD, CIRCUIT AND FLEXURAL RESONATOR FOR MEASURING THE DENSITY OF FLUIDS

Anton Paar GmbH, Graz-St...

1. A method for measuring a density of fluids from a period of a resonant oscillation mode of a flexural resonator, which further comprises:operating an oscillator in a resonant undamped oscillation with an excitation amplifier circuit;
operating the oscillator in a forced undamped oscillation during a time interval ?t1 via an excitation amplifier;
periodically interrupting an excitation of the forced undamped oscillation for a time interval ?t2, the oscillator is left free and allowed to oscillate damped as a function of its quality factor during the time interval ?t2 of an interruption, in the time interval ?t2, a period of a free damped oscillation is used for a density determination; and
exciting the oscillator again into the resonant undamped oscillation after a measurement of the period of the free damped oscillation.

US Pat. No. 9,703,022

DEFLECTING PRISM AND MEASURING ASSEMBLY

Anton Paar GmbH, Graz-St...

1. A measuring configuration, comprising:
a deflecting prism for electromagnetic radiation and having a measuring surface:
a measuring unit containing either:
a measuring device having a wall with a recess formed therein, said deflecting prism soldered in said recess in said wall,
said deflecting prism facing or can be brought into contact with a medium to be examined; or

a pipeline having a wall, said deflecting prism soldered in said wall of said pipeline, and said measuring surface facing
the medium or can make contact with the medium;

said deflecting prism having a body formed in one piece from a mono-crystal, said body containing:
sides with at least two beam conductive surfaces disposed opposite each other or circumferentially about said body;
said measuring surface lying between said beam conductive surfaces or surrounded by said beam conductive surfaces;
at least one beam conductive surface selected from the group consisting of a beam entry surface and a beam exit surface;
a remaining part; and
an elevation having a ledge surrounding said elevation, said measuring surface lying on said elevation formed on said body,
said elevation crossing over via said ledge into said remaining part, and on said remaining part at least one of said beam
conductive surfaces, said beam entry surface or said beam exit surface lies; and

a solder joint surrounding only said elevation of said body of said deflecting prism and said solder joint proceeding from
a circumferential edge of said measuring surface extends over maximally 80% of a height of said elevation.

US Pat. No. 9,766,172

DOUBLE-MOTOR RHEOMETER WITH EXTENSION ASSEMBLY

Anton Paar GmbH, Graz (A...

1. A double motor rheometer, comprising:
a first measuring motor;
a second measuring motor; and
an extension assembly, the extension assembly connected or connectable, in terms of driving, to the first measuring motor
and the second measuring motor, wherein the first measuring motor and the second measuring motor are controllable independently
of each other, and wherein each of the first measuring motor and the second measuring motor is provided for determining a
torsional moment generated by the corresponding measuring motor, the extension assembly including:

a first sample holding part for holding a first sample portion of a sample;
a second sample holding part for holding a second sample portion of the sample;
wherein, when the extension assembly is connected, in terms of driving, to the double motor rheometer, the first sample holding
part is drivable by the first measuring motor in a rotational movement about a first axis;

the second sample holding part is drivable by the second measuring motor in a rotational movement about a second axis;
the first axis is arranged so as to be parallel to and spaced apart from the second axis so that the sample held in the first
sample portion and in the second sample portion extends between the first sample holding part and the second sample holding
part; and

for at least one of the first measuring motor and the second measuring motor a fastening device is provided by which the corresponding
measuring motor is affixable in at least two different positions in a direction transverse to the first axis.

US Pat. No. 10,180,381

ROTARY RHEOMETER

Anton Paar GmbH, Graz-St...

1. A rotary rheometer, comprising:an adjustment device;
two measurement parts delimiting a measurement gap and can be moved relative to one another in a predetermined movement direction by said adjustment device;
a force circuit delimited by said measurement parts; and
at least one switching unit responding to changes in a force flow in said force circuit, said switching unit having switching contacts for an activation of said adjustment device, said switching unit stopping said adjustment device when a predetermined limit force value is exceeded for the force flow in a positive direction, without relative movement of said measurement parts, or with said measurement parts remaining in a same position, said at least one switching unit responding to changes in the force flow in said force circuit by said switching unit stopping said adjustment device when the predetermined limit force value is exceeded for the force flow in a negative direction, without the relative movement of said measurement parts, or with said measurement parts remaining in the same position.

US Pat. No. 10,488,434

CHARACTERIZING A HEIGHT PROFILE OF A SAMPLE BY SIDE VIEW IMAGING

Anton Paar GmbH, Graz (A...

1. A scanning probe microscope, in particular an atomic force microscope, for analysing a sample by moving a probe and the sample relative to one another, the scanning probe microscope comprising:a detection unit which comprises a side view camera arranged and configured for detecting an image of the sample in a substantially horizontal side view,
wherein the side view camera is arranged and configured for additionally monitoring a gap between the sample and the probe in a substantially horizontal side view;
a determining unit for determining information indicative of a profile of at least part of a surface of the sample based on the detected image,
wherein the determining unit is configured for determining information of at least one of the group consisting of determining multiple height values from a shadow image of the sample, and determining a three dimensional surface function of at least part of the sample.

US Pat. No. 10,330,698

DEFINABLY SWITCHABLE MAGNETIC HOLDING DEVICE

Anton Paar GmbH, Graz (A...

1. A holding device for detachably holding a magnetic sample holder or sample body, in particular for a scanning probe microscope, wherein the holding device comprises:an accommodation unit for accommodating a magnetic sample holder or a sample body;
a magnetic field guiding unit which, in a holding mode, is adapted for guiding a magnetic field for applying a magnetic holding force at the accommodation unit for holding the magnetic sample holder or the sample body which is accommodated at the accommodation unit;
a magnetic field switching unit which is adapted for switching between at least two relative spatial arrangements between the magnetic field guiding unit and the magnetic field switching unit, in order to selectively adjust the holding mode or a release mode, wherein in the release mode the magnetic sample holder or sample body is released for being detached from the accommodation unit, and
wherein the magnetic field switching unit is configured to switch between the at least two relative spatial arrangements by moving the magnetic field switching unit, such that, in at least one of the two relative spatial arrangements, the magnetic field switching unit is at least partially inserted longitudinally into a recess in the magnetic field guiding unit.

US Pat. No. 10,386,386

FIXING MECHANISM ACTUATABLE WITHOUT A TOOL AND WHICH FIXES A MEASURING PROBE IN A DETACHABLE MANNER FOR A SCANNING PROBE MICROSCOPE

Anton Paar GmbH, Graz (A...

20. A device for selectively fixing a measuring probe of a scanning probe microscope, the device comprising:an inserting unit with an accommodation slot in which the measuring probe can be accommodated, wherein the measuring probe without being attached to an auxiliary body is insertable into the accommodation slot of the inserting unit; and
a master force unit for selectively exerting a master force on a fixing mechanism which is actuatable without a tool, wherein the master force unit is selected from the group consisting of a master force unit for exerting a magnetic master force, an electrical master force, or a thermal master force,
wherein the fixing mechanism is responsive to the master force unit for detaching and/or fixing the measuring probe by controlling an interactive force when the measuring probe is inserted in the inserting unit,
wherein the fixing mechanism is configured such that when the master force is disabled, the measuring probe is fixed to the inserting unit, and when the master force is enabled, the measuring probe is detached from the inserting unit,
wherein at least one of the fixing mechanism and the master force unit comprise at least one magnetic element.

US Pat. No. 10,684,307

IMAGING A GAP BETWEEN SAMPLE AND PROBE OF A SCANNING PROBE MICROSCOPE IN A SUBSTANTIALLY HORIZONTAL SIDE VIEW

Anton Paar GmbH, Graz (A...

1. A scanning probe microscope using scanning probe microscopy for analyzing a sample by moving a probe and the sample relative to one another, the scanning probe microscope comprising:a detection unit for detecting an image of a gap between the sample and the probe in a substantially horizontal side view;
an optical system at least partially between the gap and the detection unit, wherein the optical system is a telecentric optical system that provides a magnification independent of a distance between the gap and the detection unit;
a drive unit configured for moving at least one of the probe and the sample for mutually approaching the probe and the sample based on the image of the gap between the sample and the probe,
wherein the optical system comprises at least one lens and an aperture through which an electromagnetic radiation beam, after propagating through the gap, propagates before it reaches the detection unit; and
an illumination unit configured for illuminating the gap with the electromagnetic radiation beam from a substantially horizontal side position,
wherein the detection unit and the illumination unit are arranged so that the electromagnetic radiation beam propagates from the illumination unit through the gap to the detection unit.

US Pat. No. 10,520,408

METHOD AND INSTRUMENT FOR MEASURING THE DENSITY OF FLUID MEDIA

Anton Paar GmbH, Graz-St...

1. A measuring device for measuring a density of a fluid medium, the measuring device comprising:a density sensor configured as a frequency oscillator with a mass balance;
an evaluation unit connected to said frequency oscillator with said mass balance for outputting data;
a base body having a first end and a second end with a counterpart;
a cartridge carrying a connection part coordinated with said counterpart with which said cartridge and said base body are detachably connected to one another only at said second end, said cartridge having an inlet and an outlet for transporting the fluid medium in and out of said cartridge, said inlet and said outlet are disposed on a same side of said cartridge and on a same side as said connection part;
measurement sensors, said frequency oscillator with said mass balance and said measurement sensors are disposed completely inside said cartridge and completely enclosed by said cartridge; and
at least a memory disposed in said cartridge to store adjustment data or calibration data determined using measurement standards of said frequency oscillator with said mass balance, said memory coupled to said frequency oscillator with said mass balance;
said density sensor, said evaluation unit, said cartridge, said base body, said measurement sensors and said memory configure a portable, handheld measuring device with said cartridge being an interchangeable cartridge.

US Pat. No. 10,352,841

DETERMINATION OF A REFRACTIVE INDEX OF A SAMPLE AND OF A PARTICLE SIZE OF PARTICLES IN SAID SAMPLES BY MEANS OF A DYNAMIC LIGHT SCATTERING APPARATUS

Anton Paar GmbH, Graz (A...

1. A scattering apparatus, in particular a dynamic light scattering apparatus, comprising:an electromagnetic radiation source configured for irradiating a sample with primary electromagnetic radiation;
an electromagnetic radiation detector configured for detecting secondary electromagnetic radiation generated by scattering the primary electromagnetic radiation at the sample;
a refraction index determination unit configured for determining information indicative of a refraction index of the sample; and
a particle size determining unit configured for determining information indicative of particle size of particles in the sample by analyzing the detected secondary electromagnetic radiation;
wherein the refraction index determination unit comprises a movable optical element in an optical path along which at least one of the primary electromagnetic radiation and the secondary electromagnetic radiation propagates and is configured for determining information indicative of the refraction index of the sample by analyzing an intensity variation of the detected secondary electromagnetic radiation at different positions of the movable optical element in the optical path.

US Pat. No. 10,973,092

MICROWAVE EQUIPMENT

Anton Paar GmbH, Graz (A...

1. An arrangement for heating a sample by microwave radiation, the arrangement comprising:a container having an inner space for accommodating the sample and having a bottom container wall;
a wave guide arranged to guide a microwave having an electric field direction;
a waveguide adapter being adapted to couple the microwave from the wave guide into the inner space of the container via the bottom container wall being oriented to be different from perpendicular to the electric field vector direction,
wherein the waveguide adapter has a recess below and close to the bottom container wall for accommodating equipment for at least one of:
monitoring at least one property of the sample;
actuating;
stirring the sample.

US Pat. No. 10,908,058

RHEOMETER WITH A ROTARY RHEOMETER AND A LINEAR DM (T)A ANALYSIS UNIT

Anton Paar GmbH, Graz-St...

1. A rheometer for obtaining rheometric measurement data, the rheometer comprising:a rotary rheometer having a measuring shaft rotatably mounted in a bearing and a measuring part carried on said measuring shaft, having units for measuring and/or setting a normal force and/or rotational speed of said measuring part and/or a torque exerted by said measuring shaft or on said measuring shaft and/or a deflection angle of said measuring shaft;
a linear DM(T)A analysis unit combined with said rotational rheometer, said linear DM(T)A analysis unit having an adjusting rod disposed to be linearly adjusted in a guided manner in a bearing and carrying a measuring part, and having units for measuring at least one of a tensile force, a compressive force, a position, and a feed movement of said adjusting rod;
said measuring parts respectively carried by said measuring shaft and said adjusting rod being disposed to form a measuring gap therebetween, wherein a sample under test is introduced into the measuring gap between said mutually opposite measuring parts;
said DM(T)A analysis unit having a linear motor with a stator and a slider, and said DM(T)A analysis unit having a magnetic gravitational compensation unit configured to compensate for a weight force of said adjusting rod, said measuring part on said adjusting rod, said slider and optional components fastened to said slider.