Abstract: This disclosure relates to a direct drive pumping unit having a reciprocator for reciprocating a sucker rod string and a sensor for detecting position of a polished rod. The reciprocator includes a tower for surrounding a wellhead. The polished rod is connectable to the sucker rod string and has an inner thread open to a top thereof and extends along at least most of a length thereof. A screw shaft extends into the polished rod and interacts with the inner thread. A motor is mounted to the tower, torsionally connected to the screw shaft, and operable to rotate the screw shaft relative to the polished rod.

Abstract: The invention relates to liquid compositions for use with hair removal devices comprising a metathesized unsaturated polyol ester for improved lubrication.

Abstract: A testing device for a backflow preventer assembly has a plurality of automated valves. Each automated valve is coupled to a corresponding test valve of the backflow preventer assembly. A high side diverter array is coupled to at least one of the plurality of automated valves. A low side diverter array is coupled to at least one of the plurality of automated valves. A vent side diverter array is coupled to at least one of the plurality of automated valves. A pressure differential transmitter is coupled to the high side diverter array and the low side diverter array. A high side bleed solenoid is coupled to a high side of the pressure differential transmitter. A low side bleed solenoid is coupled to a low side of the pressure differential transmitter. A vent side bleed solenoid coupled to a vent side diverter array. A plurality of bypass solenoids is coupled to the high side bleed solenoid, the low side bleed solenoid and the vent side bleed solenoid.

Abstract: Methods and apparatus for operating a rod pumping unit for a wellbore are provided. One example method includes measuring vibration data in the time domain using at least one sensor coupled to a housing for a moving component of the rod pumping unit; converting the vibration data in the time domain to vibration data in the frequency domain; determining that: (1) at least one frequency component of the frequency-domain vibration data in a first frequency band has a power above a first threshold; or (2) a number of frequency components of the frequency-domain vibration data in a second frequency band having power above a second threshold is above a third threshold; and outputting an indication based on the determination.

Abstract: An assembly for adding a medication or like substance to a liquid solution in a flexible bag (10) is provided. The flexible bag (10) contains a liquid solution, such as dialysate. An adapter (14) extends from the flexible bag (10) and includes a skirt (20) having an array of resilient sections (22) for engaging and snapping onto a neck finish (106) of a separate vial (100) containing a medication or like substance. A locking device (16) is adapted to be secured about the skirt (20) in a locking position that prevents outward movement of the array of resilient sections (22) and thereby prevents disengagement of the vial (100) from the adapter (14). A method of transferring the liquid solution from the bag (10) to the vial (100), mixing the medication with the liquid solution, and returning the mixture to the bag (10) is also provided.

Abstract: A method, computer program product, and system to perform a sale transaction are provided. The method includes identifying each item of a plurality of items, based on at least one image of the plurality of items, determining a cost for each item, optionally identifying a person based on an image of the person, adding each of the items and each of the costs to a sale transaction, and charging the person for the sale transaction.

Abstract: Electric fluid flow monitoring apparatus, and agricultural fluid application systems and methods including the same are described. The fluid flow monitoring apparatus generally includes an outer housing defining a cavity. The outer housing includes an inlet for fluid to enter the cavity and an outlet for fluid to exit the cavity. Fluid flows through the cavity from the inlet to the outlet. The flow monitoring apparatus also includes an inner housing defining an interior cavity and positioned within the outer housing cavity such that fluid flows through the interior cavity. The inner housing is removably connected to the outer housing such that the inner housing is interchangeable with another inner housing having a different cross-sectional profile. The flow monitoring apparatus further includes a traveler movably disposed within the interior cavity.

Abstract: A long-stroke pumping unit includes a tower, a counterweight assembly movable along the tower, and a crown mounted atop the tower. A sprocket is supported by the crown and rotatable relative thereto. The counterweight is coupled to a belt. The pumping unit further includes a motor having a stator mounted to the crown and a rotor torsionally connected to the sprocket. A sensor is used to detect a position of the counterweight assembly. The pumping unit may include a dynamic control system for controlling a speed of a motor.

Abstract: A system for testing a ground fault detection system in an electric circuit establishes a ground connection between a bus and the ground via an inverter and a load by closing an inverter switch of the inverter and a grounding switch disposed between the load and the ground, determines whether the ground connection is detected, and determines a fault in the ground fault detection system responsive to the first ground connection not being detected by the ground fault detection system. Optionally, a ground fault may be identified by determining three phase voltages provided from each of plural inverters, determining symmetrical components of the three phase voltages for each of the inverters, and identifying a ground fault in one or more of the inverters while powered by the power supply based on the symmetrical components.

Abstract: Techniques for packaging and deploying algorithms utilizing containers for flexible machine learning are described. In some embodiments, users can create or utilize simple containers adhering to a specification of a machine learning service in a provider network, where the containers include code for how a machine learning model is to be trained and/or executed. The machine learning service can automatically train a model and/or host a model using the containers. The containers can use a wide variety of algorithms and use a variety of types of languages, libraries, data types, etc. Users can thus implement machine learning training and/or hosting with extremely minimal knowledge of how the overall training and/or hosting is actually performed.

Abstract: A method, computer program product, and system to perform a sale transaction are provided. The method includes identifying each item of a plurality of items, based on at least one image of the plurality of items, determining a cost for each item, optionally identifying a person based on an image of the person, adding each of the items and each of the costs to a sale transaction, and charging the person for the sale transaction.

Abstract: The invention relates to liquid compositions for use with hair removal devices comprising a methathesized unsaturated polyol ester for improved lubrication.

Abstract: A mounting system includes a chassis, guide rods, and lifting elements. The guide rods extend from a back wall of the chassis and are suspended above a support platform of the chassis. A first guide rod is spaced a designated height above the support platform to be received within a channel of a module while the module is disposed on the support platform. The first guide rod guides movement of the module towards the back wall. As the module approaches the back wall, a first lifting element engages the module at an angled contact interface to lift the module off the support platform responsive to additional movement of the module towards the back wall. When the module is fully loaded, the module is supported by the back wall, the first lifting element, and/or the first guide rod, and is spaced apart from the support platform by a gap.

Abstract: A modular rack system and method includes a rack having plural electrical interfaces, and plural module panels configured to mate with the electrical interfaces of the rack. The module panels have one or more of a common exterior size or a common exterior shape. At least two of the module panels have different internal electrical components configured to perform different operations. The rack is configured to be conductively coupled with a power delivery system of a vehicle and the module panels are configured to modify electric current prior to the electric current being supplied to the power delivery system of the vehicle.

Abstract: A module panel and method include an exterior housing, at least one heat sink disposed in the housing, a power delivery circuit disposed in the housing and coupled to one side of the at least one heat sink, and a controller circuit disposed in the housing and coupled to an opposite side of the at least one heat sink. The power delivery circuit operates using one or more different voltages than the controller circuit.

Abstract: Methods, computer program products, and systems for operating a retail environment using unmanned vehicles are provided. The methods include observing a person interacting with one or more items with a camera carried by an unmanned vehicle, identifying the one or more items based on data received from the unmanned vehicle, and adding each identified item to a transaction for the person. The methods can further include charging the person for the transaction, presenting promotions, retrieving a desired item, answering questions, following a person, guiding a customer to a location, and showing images of inventory items.

Abstract: Devices and systems for producing rotational actuation are described. More specifically, hydraulic and pneumatic actuators that can produce and control rotational or joint-like motion are described. An actuator may include a torus shaped cylinder configured to enable rotation of the actuator. An actuator may further include both a piston configured to rotate from a first end of the torus shaped cylinder to a second end of the torus shaped cylinder and a piston rod coupled to the piston.

Abstract: The invention relates to a laminate liner for sealingly engaging a container in an associated container and closure assembly. The liner can include at least first, second, third, and fourth layers, respectively, and have a thickness between 0.0060-0.0120 inches. The first and bottom layer, can comprise a plastic polymeric material, and have a thickness between 0.0005-0.0015 inches. The second layer can comprise a metallic material and have a thickness between 0.0005-0.0010 inches. The third layer can comprise a chip board material, and have a thickness between 0.0045-0.0055 inches. The third layer can prevent the liner from curling or defoiming from its preferably flat shape. The fourth and top layer can comprise a plastic polymeric material and have a thickness between 0.0005-0.0015 inches. An adhesive bonding layer, having a thickness between 0.0003-0.0005 inches, can be located between first, second, third, and fourth layers, to bond adjacent layers together.