Abstract: A valve assembly includes a valve body and a valve member extending through at least a portion of the valve body. The valve assembly also includes a seat pocket forming an annular recess in the valve body and a seat arrangement positioned at least partially within the seat pocket. The seat arrangement includes a lower seat extending radially inward from the annular recess toward the valve cavity axis. The seat arrangement also includes an upper seat at least partially overlapping the lower seat, the upper seat extending radially inward toward the valve cavity axis to contact the valve member along a seat face. The seat arrangement further includes an interface seal positioned along an interface between the upper seat and the lower seat, the interface seal receiving a fluid pressure to drive the lower seat radially outward and into the annular recess.

Abstract: Various embodiments are directed to group-based data storage systems configured for maintaining data exchanged between client devices within channel-specific shards each corresponding with one or more group-identifiers to provide group-based access to those channel-specific shards and for applying group-specific policies for data stored within those channel-specific shards. Membership of particular users within particular groups and within particular channels may be monitored such that access to particular channel shards may be controlled based on group-memberships of the users, and access to data stored within particular channel shards may be controlled based on channel-memberships of the users.

Abstract: Techniques for committing back end computing resources to an online stream of requests for data from client devices are described herein. A polling schedule server (e.g., a reservation management system), may receive polling reservation requests from a plurality of client devices, may evaluate each client device's need for “fresh” data based on a number of input signals, and may assign the client device a polling slot (e.g., a reservation for a future polling time). The polling scheduler server may subsequently receive a polling request from a client device and, upon validating a token received from the client device as well as a difference between an assigned polling time and the polling request timestamp, may grant the polling request by transmitting a request to one or more communication system servers, receiving data from the communication system servers, and providing the data to the client device.

Abstract: A valve assembly includes a valve body and a valve member extending through at least a portion of the valve body. The valve assembly also includes a seat pocket forming an annular recess in the valve body and a seat arrangement positioned at least partially within the seat pocket. The seat arrangement includes a lower seat extending radially inward from the annular recess toward the valve cavity axis. The seat arrangement also includes an upper seat at least partially overlapping the lower seat, the upper seat extending radially inward toward the valve cavity axis to contact the valve member along a seat face. The seat arrangement further includes an interface seal positioned along an interface between the upper seat and the lower seat, the interface seal receiving a fluid pressure to drive the lower seat radially outward and into the annular recess.

Abstract: Methods, systems, and apparatuses are provided for reservation management for client-initiated polling requests in a communication system.

Abstract: A quick connect coupling mechanism joins an actuator to a bonnet. The quick connect coupling mechanism may utilize machined or otherwise prepared components including one or more specific features, such as slots or grooves, to facilitate a connection between the actuator and the bonnet. For example, the actuator housing may be machined or formed to include an opening to enable radial insertion of the bonnet into a slot formed circumferentially about at least a portion of the actuator housing. The opening may be secured to block radial movement of the bonnet within the housing. A rail system may also be utilized to couple the actuator housing to the bonnet. For example, pairs of grooves may be formed in the actuator housing and bonnet to facilitate insertion of rails. The rails may block both axial movement of the actuator housing and also block rotational movement.

Abstract: Low-profile latching mechanisms and related mechanical interfaces for allowing straps and other fastening accessories for limb-wearable devices are provided. The mechanisms in question allow for a very strong, yet easily releasable, connection to be made between a strap accessory and a device housing, with very little of the mechanism being visible.

Abstract: An aspect of the disclosure pertains to finger blood pressure cuff. The finger blood pressure cuff may include a housing having an opening sized to receive a human finger and an inflatable elastic bladder disposed about an inward-facing surface of the opening. The inflatable elastic bladder may be inflated to pressurize a user's finger and temporarily occlude blood flow in the user's finger. The finger blood pressure cuff may include a pressure sensor for obtaining blood pressure measurements.

Abstract: Various embodiments herein include at least one of devices, systems, methods, and software of communication and signaling devices. One device embodiment includes a visual signaling output, at least one radio transceiver, and a network interface device. This device further includes a processor and a memory device storing instructions executable by the processor to cause the device to perform data processing activities that may include receiving an identifier via the at least one radio transceiver, outputting a work in progress indicator from the visual signaling output, and transmitting the received identifier via the network interface device to a network service. These data processing activities further include receiving a payment success indicator via the network interface device indicating whether a payment was successfully processed with regard to the received identifier. The data processing activities may then output an indication of the received payment success indicator from the visual signaling output.

Abstract: Embodiments of the present disclosure include a system for coupling objects in a wellbore includes a unidirectional valve having a body. The body includes two or more body lugs extending radially outward, each body lug of the two or more body lugs extending at least a portion of a circumferential distance of the body. The system also includes a tubing hanger having a bore that receives the unidirectional valve. The bore includes an axial restraint system that receives the two or more body lugs and blocks axial movement of the unidirectional valve in a first position and enables axial movement of the unidirectional valve in a section position, the unidirectional valve being non-threadingly coupled to the tubing hanger.

Abstract: An apparatus (10) for downhole data acquisition and/or monitoring is configured to be disposed within a completion (12) and comprises a hanger (36) configured to latch into a control line spool (38), a retrofit valve (40) for location within the subsurface safety valve (16) of the completion (12), and a sensing arrangement (42) including an optical fiber line (44). In use, the apparatus (10) is configured to be run into the completion (12) and is operable to provide data acquisition and/or monitoring capability in the well, including up or near total depth and in particular but not exclusively in the region of the well subjected to an intervention operation, such as a chemical injection operation.

Abstract: A heating, ventilation, air conditioning, and refrigeration (HVACR) system is disclosed. The HVACR system includes a refrigerant circuit. The refrigerant circuit includes a compressor, a condenser, an expansion device, and an evaporator fluidly connected. A controller is electronically connected to the compressor. The controller is configured to prevent the compressor from operating at a speed that is less than a minimum speed limit. A lubricant separator has an inlet fluidly connected between the compressor and the condenser and a plurality of outlets. A first of the plurality of outlets is fluidly connected to the condenser. A second of the plurality of outlets is fluidly connected to one or more components of the compressor to provide a lubricant to the one or more components.

Abstract: A quick connect coupling mechanism joins an actuator to a bonnet. The quick connect coupling mechanism may utilize machined or otherwise prepared components including one or more specific features, such as slots or grooves, to facilitate a connection between the actuator and the bonnet. For example, the actuator housing may be machined or formed to include an opening to enable radial insertion of the bonnet into a slot formed circumferentially about at least a portion of the actuator housing. The opening may be secured to block radial movement of the bonnet within the housing. A rail system may also be utilized to couple the actuator housing to the bonnet. For example, pairs of grooves may be formed in the actuator housing and bonnet to facilitate insertion of rails. The rails may block both axial movement of the actuator housing and also block rotational movement.

Abstract: Embodiments of the present disclosure include a system for controlling a fluid flow. The system includes a valve body including a bore extending along an axis, an inlet, and an outlet, wherein a flow passage extends transverse the axis from the inlet to the outlet, a stem extending through the bore along the axis, and a valve member coupled to the stem. The valve member is movable along the axis, via the stem, between a closed position where the valve member blocks the flow passage to an open position where the valve member does not block the flow passage. The system also includes a balancing system coupled to the valve member, the balancing system comprising a tether and a balance member, wherein an opening force unseating the valve member is translated to the balance member.

Abstract: Technology is provided for partitioning a shared unified cache in a multi-processor computer system. The technology can receive a request to allocate a portion of a shared unified cache memory for storing only executable instructions, partition the cache memory into multiple partitions, and allocate one of the partitions for storing only executable instructions. The technology can further determine the size of the portion of the cache memory to be allocated for storing only executable instructions as a function of the size of the multi-processor's L1 instruction cache and the number of cores in the multi-processor.

Abstract: Systems, apparatuses, methods, and computer program products are provided for managing geographically distributed data storage in a group-based communication system and for servicing deletion requests related thereto. In some embodiments, an apparatus physically located in a first geographic area defined by a first geographic boundary is provided. In embodiments, upon determining that an entity identifier associated with a message is associated with a geographic data storage policy, the apparatus is configured to transmit a geographic data residency message package comprising message data of the message to a geographic data residency server physically located within a second geographic area defined by a second geographic boundary. The second geographic area is associated with the geographic data storage policy. In some embodiments, the apparatus is configured to update the message data of the message with residency token data received from the geographic data residency server.

Abstract: An aspect of the disclosure pertains to a blood pressure measurement device and methods of obtaining pulse information from a blood pressure measurement. An inflatable bladder defines, at least in part, a pressurizable volume. The inflatable bladder may be inflated to pressurize a user's appendage and temporarily occlude blood flow in the user's appendage, where the inflatable bladder is inflated to a pressure greater than a maximum amplitude pressure from oscillometric data in a pressure profile. The inflatable bladder may be deflated and then re-inflated to a target pressure and held at the target pressure to generate pulse information, or the inflatable bladder may be deflated to the target pressure and held at the target pressure to generate the pulse information.

Abstract: A screw compressor, refrigerant circuit, lubrication method are disclosed. The screw compressor includes a suction inlet that receives a working fluid to be compressed. A compression mechanism is fluidly connected to the suction inlet. A discharge outlet is fluidly connected to the compression mechanism that outputs the working fluid following compression by the compression mechanism. The screw compressor includes a slide valve that is movable between a first position and a second position. The first position corresponds to a high volume ratio and the second position corresponds to a low volume ratio. The slide valve includes a plurality of lubricant passageways selectively connectable to a lubricant source. A first of the plurality of lubricant passageways is configured to be selected to provide lubricant at the high volume ratio, and a second of the plurality of lubricant passageways is configured to be selected to provide lubricant at the low volume ratio.

Abstract: A heating, ventilation, air conditioning, and refrigeration (HVACR) system is disclosed. The HVACR system includes a compressor, a condenser, and an evaporator fluidly connected to form a refrigerant circuit. A lubricant return line is fluidly connected to the compressor and to the evaporator. A pressure difference between the compressor and the evaporator induces a fluid flow of lubricant from the evaporator to the compressor.

Abstract: A heating, ventilation, air conditioning, and refrigeration (HVACR) system is disclosed. The HVACR system includes a compressor, a condenser, and an evaporator fluidly connected to form a refrigerant circuit. A lubricant return line is fluidly connected to the compressor and to the evaporator. A pressure difference between the compressor and the evaporator induces a fluid flow of lubricant from the evaporator to the compressor.