Abstract: Embodiments disclosed herein are directed to devices, systems, and methods for mixing and/or blending two or more fluids, such as gases, to produce suitable mixed or blended fluids, such as a breathable gas. For example, the system may control and/or regulate flow from of first fluid from a first source and/or flow of a second fluid from a second source. The system may include a controller that may operate or direct operation of one or more valves to control the flow of the first and second fluids, thereby producing a blended or mixed fluid that has selected concentrations or proportions (or ratios) of the first and second fluids.

Abstract: A centralizer, method, and centralizer assembly. For example, the centralizer assembly includes a first stop collar fixed in place on a tubular, and a first end collar that is sized to slide axially over the first stop collar. The centralizer assembly also includes a first retainer coupled with the first end collar. The first retainer prevents the first stop collar from sliding past the first stop collar in at least one axial direction. The assembly also includes a plurality of ribs coupled with the first end collar and configured to engage a surrounding tubular in which the tubular is disposed.

Abstract: Various embodiments of ultrasonic testing systems are disclosed herein. In one embodiment, an ultrasonic testing system includes a plurality of ultrasonic arrays. The individual ultrasonic arrays include a transducer support extending along a length of the corresponding ultrasonic array, and a plurality of ultrasonic transducers. The individual ultrasonic transducers are mounted to the corresponding transducer supports, and are operable to generate ultrasonic sound waves. The system also includes an adjustable mount supporting the plurality of ultrasonic arrays and operable to adjust a position of the plurality of ultrasonic arrays along two non-parallel axes.

Abstract: A ventilator includes a compressor, a storage vessel, a valve assembly communicating with the compressor, the storage vessel, and an inhalation line. A controller directs the valve assembly between a storage configuration where ventilation gas is delivered from the compressor into the storage vessel, and a delivery configuration where ventilation gas is delivered from the storage vessel to the inhalation line. The controller is coupled to a pressure sensor for detecting a first pressure within the storage vessel when the valve assembly is directed to the delivery configuration, and detecting subsequent pressure while ventilation gas is delivered from the storage vessel to the inhalation line, the controller determining the volume of ventilation gas delivered to the patient based at least in part on the difference between the first pressure and the subsequent pressure.

Abstract: A bow-spring centralizer (6) includes bow springs (5), moving collars (11) secured to each end of each bow spring, and interlocked stop collars (10). Extendable collars (8) may each be formed of a moving collar (11) movably interlocked with a stop collar (10). The centralizer (6) may optionally be formed from a tube cut using a laser to create two extendable collars coupled by bow springs. Each extendable collar may include heads integrally formed on extensions protruding from a collar (stop collar or moving collar). The heads may be generally rectangular, arrow, or teardrop-shaped head or some other shape. Each head may be slidably captured within a chamber on the interlocked collar (moving collar or stop collar). The extensions of each interlocked tubular member define the outer walls of the chamber in which a head of the interlocked tubular member is slidably captured.

Abstract: A method for manufacturing a centralizer. The method includes selecting a tubular having a first inner diameter, cutting the tubular to form a blank including at least one end collar and ribs integrally-formed therewith, and swaging the at least one end collar such that the first inner diameter is modified to a second inner diameter.

Abstract: In one embodiment, an inverter generates an inverted clock signal using (i) first P-type and N-type transistors connected in cascode between supply and ground nodes and (ii) control circuitry receiving different phase-offset input clock signals that ensure that the cascode-connected transistors are never even partially on at the same time, thereby preventing crowbar current from occurring through the cascode-connected devices. In one implementation, the control circuitry has two P-type transistors and two N-type transistors configured to receive three phase-offset input clock signals to prevent crowbar current in the inverter. The control circuitry has pass transistors that selectively allow one of the phase-offset input signals to be applied to the gate of one of the cascode-connected transistors with minimal delay, thereby enabling the inverter to operate properly over a relatively wide range of input clock frequencies.

Abstract: A cylindrical container for holding snack foods and other items that can be transformed into a serving bowl is provided. A container system comprising a cylindrical container and flexible panels that can be assembled into a serving bowl is also provided.

Abstract: In one embodiment, a wear band comprises a rotating element having a bore receivable on a tubular, the bore comprising first and second bore portions slidably receiving first and second sleeve bearings. Outer surfaces of the sleeve bearings slidably engage the bore portions and the bores of the sleeve bearings slidably engage the tubular. A first stop collar and a second stop collar may be received on the tubular to together straddle the rotating element and sleeve bearings to longitudinally secure the rotating element in a position on the tubular. The tubular may be included within a tubular string run into a borehole or into the bore of an installed casing, such as in casing while drilling. The rotating element provides stand-off between a tubular and the wall of a bore, reduces frictional resistance to longitudinal sliding and also to rotation of the tubular string within the bore.

Abstract: A liquid dispenser having a replaceable liquid reservoir is provided. The dispenser may comprise a reusable body or shell, a reusable pump mechanism and a replaceable insert. The insert includes a liquid reservoir and an integral fitment.

Abstract: A liquid dispenser having a replaceable liquid reservoir is provided. The dispenser may comprise a reusable body or shell, a reusable pump mechanism and a replaceable insert. The insert includes a liquid reservoir and an integral fitment.

Abstract: In one embodiment, an inverter generates an inverted clock signal using (i) first P-type and N-type transistors connected in cascode between supply and ground nodes and (ii) control circuitry receiving different phase-offset input clock signals that ensure that the cascode-connected transistors are never even partially on at the same time, thereby preventing crowbar current from occurring through the cascode-connected devices. In one implementation, the control circuitry has two P-type transistors and two N-type transistors configured to receive three phase-offset input clock signals to prevent crowbar current in the inverter. The control circuitry has pass transistors that selectively allow one of the phase-offset input signals to be applied to the gate of one of the cascode-connected transistors with minimal delay, thereby enabling the inverter to operate properly over a relatively wide range of input clock frequencies.

Abstract: A method for processing video can include storing input video frame data at a video data buffer and outputting the stored video frame data from the video data buffer at an output video frame rate based on at least an amount of video frame data stored at the video data buffer.

Abstract: A creep life management system includes at least one sensor apparatus coupled to a first component. The at least one sensor apparatus is configured with a unique identifier. The creep life management system also includes at least one reader unit coupled to a second component. The at least one reader unit is configured to transmit an interrogation request signal to the at least one sensor apparatus and receive a measurement response signal transmitted from the at least one sensor apparatus. The creep life management system further includes at least one processor programmed to determine a real-time creep profile of the first component as a function of the measurement response signal transmitted from the at least one sensor apparatus.

Abstract: A device for forming bow springs in a one-piece centralizer includes a swing arm that is configured to receive the one-piece centralizer. The device and process using the device include mechanically applying, with a press, an external load onto an un-formed bow spring positioned on a form of the swing arm. When the load is applied with the device, the un-formed centralizer is forced downward to allow the bow spring to take the desired form/shape/geometry, length, and height of a formed bow spring.

Abstract: A method for processing video can include storing input video frame data at a video data buffer and outputting the stored video frame data from the video data buffer at an output video frame rate based on at least an amount of video frame data stored at the video data buffer.

Abstract: A closure system for a flexible package is provided, comprising a rigid male fitment and a rigid female fitment. The male fitment comprises an elongated rib-like structure attached to a flat mounting plate. The male mounting plate is adhered to an outer facing surface of the front wall at or near the top end of the package. The female fitment comprises an elongated C-shaped structure tangentially attached to a flat female mounting plate. The female mounting plate is adhered to an outer facing surface of the rear wall a sufficient distance from the top edge to allow a portion of the package carrying the male fitment to be folded over in the direction of the female fitment until the male fitment engages the female fitment.

Abstract: Disclosed is an exhaust sampling system including a plurality of exhaust sampling system zones. The zones are, at least, a sampling conduit, a fill circuit, and a read circuit. A controller is programmed to predict a minimum dilution ratio to avoid condensation in one of the exhaust sampling system zones. The controller is further programmed to run a test procedure in which a sample of exhaust is diluted with a make-up gas at a selected minimum dilution ratio that is greater than or equal to the predicted minimum dilution ratio. Further disclosed are methods of predicting whether condensation occurs during a test procedure.

Abstract: A system includes a turbomachine. The turbomachine includes at least one rotor disk. The system also includes a rotor disk heating system configured to resistively heat at least a portion of the at least one rotor disk via an electrical current or voltage applied to the portion of the at least one rotor disk.

Abstract: Disclosed is an exhaust sampling system including a plurality of exhaust sampling system zones. The zones are, at least, a sampling conduit, a fill circuit, and a read circuit. A controller is programmed to predict a minimum dilution ratio to avoid condensation in one of the exhaust sampling system zones. The controller is further programmed to run a test procedure in which a sample of exhaust is diluted with a make-up gas at a selected minimum dilution ratio that is greater than or equal to the predicted minimum dilution ratio. Further disclosed are methods of predicting whether condensation occurs during a test procedure.