Abstract: Provided are material testing devices and methods for measuring certain physical properties of materials, such as for example, drying, curing, film formation, friction, adhesion, print resistance, and scratch resistance. The testing device includes a platform, a stylus comprising a probe, an angle sensor, a linear position sensor, a control system with a power supply and a control center which may be programmed with testing parameters.

Abstract: Apparatus for monitoring fluid flow in a pipe using electromagnetic velocity tomography An apparatus for monitoring a fluid flow in a pipe using electromagnetic velocity tomography (EVT), the apparatus comprising a pipe defining a flow conduit, a coil system comprising electrically conductive wires located externally of the flow conduit for generating composite magnetic fields within the flow conduit, a magnetic signal driving circuitry electrically connected to the coil system which is arranged to pass electrical current through the coil system thereby to transmit a magnetic field from the coil system into the flow conduit, a plurality of measurement electrodes located around the flow conduit for detecting voltages induced in an electrically conducting fluid flowing thorough the magnetic field, and a signal processing circuitry electrically connected to the plurality of measurement electrodes for receiving flow induced voltage signals from the electrodes, wherein the plurality of measurement electrodes is co

Abstract: The present invention relates to apparatus for monitoring fluid flow in a pipe using electromagnetic velocity tomography (EVT). The apparatus generates a magnetic field within a pipe and when electrically conducting fluid, such as an aqueous phase, flowing along the pipe passes through the magnetic field, flow induced voltages are generated by magnetic induction which are detected by electrodes. The signals at the electrodes can be processed to produce images of the flow velocity profile in the pipe. The flow may be a multiphase flow which comprises fluids, and may comprise a mixture of liquids, or one or more liquids in a mixture with solids and/or gases. This invention may provide a multiphase flow metering apparatus which has a number of applications, in particular within the oil and gas exploration and production industry.

Abstract: An apparatus for monitoring a fluid flow in a pipe using electromagnetic velocity tomography (EVT) which can incorporate capacitively-coupled electrodes which avoid any direct physical and electrical contact between the process fluid to be monitored and the electronics for processing the flow induced voltages, yet which can provide highly accurate output data for processing using electromagnetic velocity tomography (EVT) to produce images of the fluid flow.

Abstract: The present invention relates to apparatus for monitoring fluid flow in a pipe using electromagnetic velocity tomography (EVT). The apparatus generates a magnetic field within a pipe and when electrically conducting fluid, such as an aqueous phase, flowing along the pipe passes through the magnetic field, flow induced voltages are generated by magnetic induction which are detected by electrodes. The signals at the electrodes can be processed to produce images of the flow velocity profile in the pipe. The flow may be a multiphase flow which comprises fluids, and may comprise a mixture of liquids, or one or more liquids in a mixture with solids and/or gases. This invention may provide a multiphase flow metering apparatus which has a number of applications, in particular within the oil and gas exploration and production industry.

Abstract: A retainer is inserted and fitted into an engagement hole that is open in a first direction of a housing where the first direction, a second direction, and a third direction are defined as mutually-orthogonal three directions. An engagement portion is disposed at each of a pair of inner wall surfaces facing each other in the second direction in an inner peripheral wall of the engagement hole. The retainer includes a pair of first outer surfaces facing each other in the first direction, a pair of second outer surfaces facing each other in the second direction, and a pair of third outer surfaces facing each other in the third direction. A long hole passing through the third outer surface in the third direction is formed so as to be adjacent to each of the second outer surfaces, and extends in the first direction defined as a longitudinal direction. A beam portion supported at both ends by a pair of longitudinal-direction end portions is formed between the long hole and the second outer surface.

Abstract: An electronic device supplies power to system load(s) from a first battery power source and a second battery power source connected in series across a re-configurable device section boundary. A battery monitor monitors voltage across each individual battery cell within the first and second battery power sources. The battery monitor directs a charge circuit as to how and when to charge the first and second battery power sources using an external power source. The battery monitor also directs the charge circuit as to how and when to use the first and second battery power sources to power the system load(s).

Abstract: An apparatus may include a power rail, a subassembly, an additional subassembly, and an interface coupling the subassembly to the additional subassembly. The subassembly may include a load, an energy-storing component, a charger having an output coupled to the energy-storing component, and a reverse-current limiter having a first terminal coupled to the energy-storing component. The additional subassembly may include an additional energy-storing component, an additional charger having an output coupled to the additional energy-storing component, and an additional reverse-current limiter having a first terminal coupled to the additional energy-storing component. The power rail may cross the interface and may couple the load, an input of the charger, a second terminal of the reverse-current limiter, an input of the additional charger, and a second terminal of the additional reverse-current limiter. Various other apparatuses, systems, and methods are also disclosed.

Abstract: The described technology provides a method of balancing power supplied to a system load by a first battery power source and a second battery power source. The method includes sensing a first current supplied by or supplied to the first battery source. The method further includes changing a control voltage for a voltage converter circuit based on the sensed first current, an input of the voltage converter circuit being coupled to the second battery power source, an output of the voltage converter circuit being electrically coupled to the system load. The method still further includes adjusting the voltage converter circuit to modify a charge current supplied from the second battery power source to the first battery power source based on the control voltage.

Abstract: The contact lens tool is a device intended to make it easier to insert and remove a contact lens from a person's eye. To accomplish this, the device includes a unique applicator head specifically designed to pick up and hold a contact lens. According to a preferred embodiment, the applicator head can be adjusted to various positions, depending on how the device is used. For inserting or removing a contact lens, the applicator head is most effective when partially open, forming a “Y” shape. This shape allows the applicator head to hold a wide range of contact lenses. Alternatively, the applicator head can be fully opened, forming a “T” shape. When not in use, the applicator head can be folded to a fully closed position, forming an “I” shape. This shape reduces space, allowing the device to be stored in a small compartment such as a wallet or purse.

Abstract: The disclosed computer-implemented method may include determining, by at least one physical processor of a haptic device, driving signal data. The haptic device comprises a first haptic actuator exhibiting a first frequency response characteristic, and a second haptic actuator exhibiting a second frequency response characteristic different from the first frequency response characteristic. The processor may also generate first and second driving signals by applying first and second pre-processing functions to the driving signal data, respectively. The second pre-processing function is different from the first pre-processing function and the second driving signal is different from the first driving signal. The processor may also drive the first and second haptic actuators by supplying the first and second driving signals to the first and second haptic actuators, respectively. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: The disclosed biopotential measurement device may include a front end comprising a biopotential measurement sensor and a back end comprising a processor programmed to process biopotential signals detected by the biopotential measurement sensor. The biopotential measurement device may also include an isolation circuit that, during at least a sampling phase of the biopotential measurement sensor, electrically isolates the front end from the back end. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: Provided are material testing devices and methods for measuring certain physical properties of materials, such as for example, drying, curing, film formation, friction, adhesion, print resistance, and scratch resistance. The testing device includes a platform, a stylus comprising a probe, an angle sensor, a linear position sensor, a control system with a power supply and a control center which may be programmed with testing parameters.

Abstract: The disclosed computer-implemented method may include determining, by at least one physical processor of a haptic device, driving signal data. The haptic device comprises a first haptic actuator exhibiting a first frequency response characteristic, and a second haptic actuator exhibiting a second frequency response characteristic different from the first frequency response characteristic. The processor may also generate first and second driving signals by applying first and second pre-processing functions to the driving signal data, respectively. The second pre-processing function is different from the first pre-processing function and the second driving signal is different from the first driving signal. The processor may also drive the first and second haptic actuators by supplying the first and second driving signals to the first and second haptic actuators, respectively. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: A retainer is inserted and fitted into an engagement hole that is open in a first direction of a housing where the first direction, a second direction, and a third direction are defined as mutually-orthogonal three directions. An engagement portion is disposed at each of a pair of inner wall surfaces facing each other in the second direction in an inner peripheral wall of the engagement hole. The retainer includes a pair of first outer surfaces facing each other in the first direction, a pair of second outer surfaces facing each other in the second direction, and a pair of third outer surfaces facing each other in the third direction. A long hole passing through the third outer surface in the third direction is formed so as to be adjacent to each of the second outer surfaces, and extends in the first direction defined as a longitudinal direction. A beam portion supported at both ends by a pair of longitudinal-direction end portions is formed between the long hole and the second outer surface.

Abstract: The disclosed biopotential measurement device may include a biopotential measurement circuit and a right leg drive (“RLD”) circuit coupled to the biopotential measurement circuit. The device may also include electrodes coupled to the biopotential measurement circuit and a chassis housing the biopotential measurement circuit and the RLD circuit. The chassis may include a conductive portion, coupled to the RLD circuit, that may serve as an RLD electrode for the RLD circuit. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: An apparatus may include a power rail, a subassembly, an additional subassembly, and an interface coupling the subassembly to the additional subassembly. The subassembly may include a load, an energy-storing component, a charger having an output coupled to the energy-storing component, and a reverse-current limiter having a first terminal coupled to the energy-storing component. The additional subassembly may include an additional energy-storing component, an additional charger having an output coupled to the additional energy-storing component, and an additional reverse-current limiter having a first terminal coupled to the additional energy-storing component. The power rail may cross the interface and may couple the load, an input of the charger, a second terminal of the reverse-current limiter, an input of the additional charger, and a second terminal of the additional reverse-current limiter. Various other apparatuses, systems, and methods are also disclosed.

Abstract: An electronic device balances power supplied to a system load by a first battery power source and a second battery power source. A battery current sense circuit is electrically coupled to sense a first current supplied by the first battery power source to the system load. A discharge feedback controller is electrically coupled to the battery current sense circuit and configured to adjust a control voltage based on the sensed first current. A voltage converter circuit includes an input electrically coupled to the second battery power source and an output electrically coupled to the system load. The voltage converter circuit is configured to adjust current supplied by the second battery power source through the voltage converter circuit to the system load based on the control voltage.

Abstract: An apparatus may include a power rail, a subassembly, an additional subassembly, and an interface coupling the subassembly to the additional subassembly. The subassembly may include a load, an energy-storing component, a charger having an output coupled to the energy-storing component, and a reverse-current limiter having a first terminal coupled to the energy-storing component. The additional subassembly may include an additional energy-storing component, an additional charger having an output coupled to the additional energy-storing component, and an additional reverse-current limiter having a first terminal coupled to the additional energy-storing component. The power rail may cross the interface and may couple the load, an input of the charger, a second terminal of the reverse-current limiter, an input of the additional charger, and a second terminal of the additional reverse-current limiter. Various other apparatuses, systems, and methods are also disclosed.