Abstract: An electric drive system includes an energy storage system (ESS), a power conversion system, and an alternating current (AC) traction system. The ESS provides or receives electric power. The ESS includes a first energy storage unit and a second energy storage unit. The power conversion system is electrically coupled to the ESS for converting an input power to an output power. The AC traction system is electrically coupled to the power conversion system for converting the output power of the power conversion system to mechanical torques. The AC traction system includes a first AC drive device and a second AC drive device. An energy management system (EMS) is in electrical communication with the ESS, the AC traction system, and the power conversion system for providing control signals.

Abstract: The current subject matter provides a tool and user interface for estimating a velocity at which a plunger of a rod lift pump system will impact a fluid within a well when the rod lift pump system is altered to operate under various conditions of pump fillage. In some embodiments, the estimated impact velocity can be determined using a velocity pattern characterizing a velocity and position of a plunger of a rod lift pump system operating under a condition of complete pump fillage. The estimated impact velocity can provide a user with useful insight into potential operation of the rod lift pump system when operating under various conditions of pump fillage.

Abstract: A neonatal care system includes a base, a bassinet platform supported on the base, and a neonatal sleep device. The neonatal sleep device includes a frame structure connected to and extending upward from the bassinet platform, wherein the sling is suspended above the bassinet platform and configured to support a neonate. The neonatal care system further includes a heater configured to heat an environment surrounding the neonate supported in the sling.

Abstract: A centralized monitoring unit (CMU) receiving patient monitoring data from multiple patient monitoring devices includes at least two monitoring technician stations and an assignment management module. Each monitoring technician station is configured to present alarms for each patient in the group of patients to a CMU technician. The assignment management module is executable by a processing system to calculate a load index for each monitoring technician station based on alarms for patients in the group of patients. The load index for each monitoring technician station is calculated based on at least one of a number of alarms, an alarm type of each alarm, a severity of each alarm, and a duration of continuous alarming at the monitoring technician station. Assignment of the multiple patients amongst the at least two monitoring technician stations is then distributed based on the load indexes.

Abstract: An anesthetic vaporizer system includes a reservoir containing anesthetic agent, an agent level sensor measuring an agent level of the anesthetic agent in the reservoir, a display, and a controller. The controller is configured to receive agent level measurements from the agent level sensor over a time period, and determine the anesthetic agent is being added to the reservoir from an agent source based on the agent level measurements over the time period. A filling status is determined based on the agent level measurements and a filling status indicator is displayed based on the determined filling status.

Abstract: A manufactured article is comprised of an additively manufactured component having sequentially joined layers of metallic powder. A braze material is disposed on at least a portion of an outer surface of the component. The braze material is located in expected crack locations in the outer surface. At least one crack formed in the outer surface, during a heat treatment, is filled with the braze material. The additively manufactured component comprises a metallic material from a precipitation hardened nickel-based superalloy, which forms a ?? phase.

Abstract: A method of centralized monitoring management at a centralized monitoring unit (CMU) includes receiving patient monitoring data from multiple patient monitoring devices, each providing patient monitoring data for one of multiple patients, and assigning each of the multiple patients to one of at least two monitoring technician stations. Each monitoring technician station is configured to receive and display patient monitoring data the patients assigned thereto and to present alarms for each patient to a CMU technician. A load index is calculated for each monitoring technician station based on the alarms for each patient in the group of patients assigned to that monitoring technician station. At least one patient is removed from the group of patients assigned to a first monitoring technician station of the at least two monitoring technician stations based on the load index for the first monitoring technician station.

Abstract: System and method of operating the system. The system having a heat pump cycle, a turbine cycle, a medium storage cycle and a water storage cycle. By way of the heat pump cycle, heat of a working fluid can be transferred to a thermal medium (M) for storing thermal energy. By way of the turbine cycle, heat of the thermal medium (M) can be transferred to a working fluid (F). In so doing electric energy can be converted into thermal energy or transferred from thermal energy into electric energy by operating either the heat pump cycle or the turbine cycle. The thermal coupling between the water storage cycle and the heat pump cycle is provided by a water-to-fluid heat exchanger and the thermal coupling between the water storage cycle and the turbine cycle is provided by a fluid-to-water heat exchanger. The water storage cycle additionally contains an air-cooled water-cooling unit that can be operated independent from the water-to-fluid heat exchanger.

Abstract: The present disclosure is directed to a rotating detonation combustor that includes a forward wall, a radially inner wall, and a radially outer wall. The forward wall is disposed at an inlet end of the rotating detonation combustor. The radially inner wall surrounds a longitudinal axis and extends downstream from the forward wall to an outlet end of the rotating detonation combustor. The radially outer wall extends downstream from the forward wall to the outlet end and surrounds the radially inner wall to define at least one annular plenum between the radially inner wall and the radially outer wall. At least one partition is proximate to the inlet end and defines at least two mixing zones. A plurality of oxidizer inlets and a plurality of fuel inlets are disposed at the inlet end in fluid communication with the at least two mixing zones.

Abstract: A rotating detonation combustor includes an annular combustion passage that is non-circular. Specifically, the present rotating detonation combustor includes a forward wall, a radially inner wall, and a radially outer wall. The radially inner wall and the radially outer wall extend downstream from the forward wall around a longitudinal axis of the combustor, thus defining an annular passage between the radially inner wall and the radially outer wall. An air inlet and a fuel inlet are disposed proximate to the forward wall and in fluid communication with the annular passage. The cross-section of the annular passage, which can be elliptical or polygonal, is defined by arcuate and/or straight sides of the inner and outer walls.

Abstract: A fluid handling apparatus for a bioprocessing system includes a first plate having a first surface and a second surface, at least one fluid flow channel formed in the first surface, at least one valve recess formed in the first surface along the at least one fluid flow channel, and at least one fluid passageway extending through the first plate from the at least one fluid flow channel to the second surface, and a sealing layer disposed over the first surface and enclosing the at least one fluid flow channel. The at least one valve recess is configured to cooperate with an actuator and the sealing layer to prevent a flow of fluid through the at least one fluid flow channel.

Abstract: A method for preheating a beater mill is provided. The method includes: rotating a beater wheel disposed within the beater mill to facilitate circulation of a gas stream between the beater mill and a furnace fluidly connected to each other via both a pulverized fuel conduit and a flue gas recirculation conduit; generating a burner gas via a burner disposed within the flue gas recirculation conduit such that the burner gas joins and heats the gas stream circulating through the beater mill and the furnace; and adjusting at least one of an air supply and a fuel supply to the burner via a controller based at least in part on one of a temperature of the gas stream at an entrance of the beater mill, a temperature of the gas stream at an exit of the beater mill, and an oxygen level within the beater mill.

Abstract: The mechanical drive system (20) comprises a frame (21), at least one rotating electric machine (22) comprising an end shaft rotor (25) arranged on the frame, and at least one transfer case (23) having at least one driving gear wheel (37). The driving gear wheel is integral with a rotor shaft of the rotating electric machine, the transfer case being arranged on the frame.

Abstract: An ultrasonic sensor assembly includes a flexible supporting material that has flexibility configured for allowing bending of the supporting material to conform to a cylindrical shape of a pipe. The assembly includes a plurality of operable sensor elements arranged in a matrix formation upon the flexible supporting material. The matrix formation includes a plurality of rows of the sensor elements and a plurality of columns of the sensor elements. The flexible supporting material is configured for placement of the columns of the matrix formation to extend along the elongation of the pipe and the flexible supporting material is configured for placement of the rows of the matrix formation to extend transverse to the elongation of the pipe. The flexible support material is configured to flex for positioning the sensor elements within each row in a respective arc that follows a curve of the cylinder shape of the pipe.

Abstract: The invention relates to valve system for controlling a process fluid within a liquid processing system. The valve system comprises a valve arrangement, a pneumatic control system, and a connector unit. When the valve arrangement is connected to the connector unit, two or more valves are formed, such that the pneumatic control system controls an open/close or pressure control mode of the valves. A pump diaphragm system is disclosed, as well as a system for purifying a biological material that comprises the valve system or the pump diaphragm system. Also discloses are methods of using the valve system or the pump diaphragm system in a process for the purification of a biological material.

Abstract: Provided is a method and a cost analysis system for detecting anomalous costs signals associated with components of a system. The method includes receiving real-time data stream, performing pre-processing operations including sorting data from data stream received into data subsets as user-defined, processing, via a processing module, the data subsets using a rule set, and determining whether cost change has occurred. If cost change has occurred, storing and archiving cost change data associated with the cost change in a cost database, receiving user input and generating, via a visualization tool, one or more reports showing the cost change data and automatically generating a real-time notification of cost change data, and performing post-processing operations comprising creating new data set including any post-shift data, and resetting applicable data to only consider data after a last change date, and transmitting to processing module for further processing.

Abstract: A closed socket brazed joint assembly is provided.

Abstract: Systems and methods are provided for increasing the efficiency of liquefied natural gas production and heavy hydrocarbon distillation. In one embodiment, air within an LNG production facility can be utilized as a heat source to provide heat to HHC liquid for distillation in a HHC distillation system. The mechanism of heat transfer from the air can be natural convection. In another embodiment, heat provided by natural gas, or compressed natural gas, can be used for HHC distillation. In other embodiments, various other liquids can be used to transfer heat to HHC liquid for distillation.

Abstract: A humidifier system for humidifying a microenvironment in a neonatal incubator includes a reservoir configured to hold water to be evaporated for humidifying the microenvironment. A chamber divider defines a heating chamber within the reservoir, and a movable heating element is positioned at a surface level of the water inside the heating chamber so as to heat the water at the surface level inside the heating chamber. The heating element is configured such that it is moved downward within the heating chamber so as to maintain the heating element at the surface level of the water as an amount of water in the reservoir decreases.

Abstract: Systems and methods for network failover in digital substations are provided. One method includes receiving, by an intelligent electronic device (IED) from a process interface unit (PIU), in parallel a pre-configured data stream via a point-to point connection and one or more other data streams via an Ethernet network. The method further includes determining that at least one of the following failure conditions is satisfied: a frame in the pre-configured data stream is lost or delayed, quality of the data in the frame in the data stream is below a first threshold, period of the time associated with the data in the frame in the data stream is below a second threshold, or a health indicator associated with the PIU is below a third threshold. The method further allows identifying at least one redundant frame in the one or more other data streams. If the quality of data in redundant frame is satisfactory, the method proceeds to use the redundant frame for further processing.

Abstract: A gas turbine that includes a rotor blade that includes an airfoil. The airfoil is defined between a pressure face and a laterally opposed suction face, the pressure face and the suction face extending axially between opposite leading and trailing edges and radially between an outboard tip and a connection with a root of the rotor blade. The airfoil may include non-integral portions in which: a base portion of the airfoil is made from a first material; and a top portion of the airfoil is made from a second material. The airfoil may include a dovetail joint connecting the top portion to the base portion. The dovetail joint may include a dovetail extending from the top portion being received within a complementary dovetail groove formed in the base portion.

Abstract: The present disclosure relates to a lighting apparatus, a driving circuit and driving method thereof. The lighting apparatus comprises a plurality groups of lighting elements and a driving circuit. Each group of lighting elements comprises at least one lighting element, each lighting element in a same group having a cathode connected to a common cathode node. The driving circuit comprises a plurality of voltage sources, each having a terminal connected to an anode of a respective lighting element in each group of lighting elements; and a plurality of current sources, each having a terminal connected to the common cathode node of a respective group of lighting elements.

Abstract: An overpressure safety system for use with a distribution of pressurized fluid associated with hydrocarbon production operations includes a safety valve in fluid communication with a main bore of a fluid control manifold assembly. The safety valve has a blocking condition where the safety valve blocks a flow of pressurized fluid through the safety valve, and a venting condition where the safety valve provides a fluid flow path for the pressurized fluid at a set overpressure to pass through the safety valve. A valve member is moveable within the safety valve between a first position where a pressure side of the valve member blocks the flow of the pressurized fluid at a pressure below the set overpressure from passing through the safety valve, and a second position where the valve member provides a fluid flow path for the pressurized fluid at any pressure to pass through the safety valve.

Abstract: A gas turbine that includes a rotor blade that includes an airfoil. The airfoil may include non-integral base and top portions. The airfoil may include a pin connector connecting the top portion to the base portion. The pin connector may include: a tab extending from the top portion; a complimentary slot for receiving the tab formed in the base portion; an elongated pin cavity formed through an interior region of the airfoil, where the pin cavity intersects the slot to divide the pin cavity into first and second pin cavity segments; a tab aperture formed through the tab, where the tab aperture is positioned so align with the pin cavity upon the tab being received within the slot; and a locking pin that extends continuously through the first segment of the pin cavity, the tab aperture, and the second segment of the pin cavity.

Abstract: In differential protection schemes for electrical power systems there is a need to employ a synchronization technique to enable time alignment of local terminal current with received current from a remote terminal in order reliably to operate the differential protection scheme. A method of determining a communication time delay in a communication network between a local terminal and each of a plurality of remote terminals in a multi-terminal multi junction electrical power system includes: (a) calculating a respective initial communication time delay between each remote terminal and the local terminal; (b) calculating a respective junction time delay between respective first, second and third pairs of adjacent junctions; and (c) correcting the calculated initial communication time delay of each remote terminal spaced from the local terminal by two or more junctions according to each corresponding junction time delay arising between the or each said remote terminal and the local terminal.

Abstract: A gas turbine that includes a rotor blade that includes an airfoil. The airfoil may include non-integral portions in which: a base portion is made from a first material; and a top portion is made from a second material. The airfoil may include a connector securing the base portion to the top portion of the airfoil, wherein the connector comprises a wire-lock connector that includes: a tab extending from one of the base portion and the top portion; a complimentary slot for receiving the tab formed in the other one of the base portion and the top portion; a first groove formed in a side of the tab; a second groove formed in a side of the slot; a retaining aperture formed cooperatively via an alignment of the first and second grooves upon the tab being received into the slot; and a retaining wire housed within the retaining aperture.

Abstract: According to some embodiments, a system may include an additive manufacturing platform that provides additive manufacturing capability data. A customer platform, associated with a customer, may transmit an industrial asset item request for an industrial asset item. A digital transaction engine may receive the additive manufacturing capability data and the industrial asset item request. The digital transaction engine may then associate the industrial asset item request with an industrial asset definition file, and, based on the additive manufacturing capability data and the industrial asset definition file, assign the industrial asset item request to the additive manufacturing platform. The assignment of the industrial asset item request may be recorded via a secure, distributed transaction ledger. Responsive to the assignment, the additive manufacturing platform may create the industrial asset item (e.g., via an additive manufacturing printer) and provide the item to the customer.

Abstract: A method and device for measuring dimensions of a feature on or near an object using a video inspection device. A reference surface is determined based on reference surface points on the surface of the object. One or more measurement cursors are placed on measurement pixels of an image of the object. Projected reference surface points associated with the measurement pixels on the reference surface are determined. The dimensions of the feature can be determined using the three-dimensional coordinates of at least one of the projected reference surface points.

Abstract: A SpO2 measurement system includes at least one light transmitter configured to transmit a first wavelength light and a second wavelength light into tissue of a patient, wherein the second wavelength is shorter than the first wavelength, and a detection device that detects the first wavelength light and the second wavelength light emitted from the tissue of the patient. The SpO2 measurement system operates the at least one light transmitter in a high power mode during a first time period to determine a SpO2 value and a high power DC ratio based on the first wavelength light and the second wavelength light detected during operation in the high power mode. The SpO2 measurement operates the at least one light transmitter in a low power mode during a second time period to determine a low power DC ratio based on the first wavelength light and the second wavelength light detected during operation in the low power mode, and to determine a blood oxygenation status for the patient based on the low power DC ratio.

Abstract: A method for determining a performance characteristic for a target startup sequence of a gas turbine, wherein the gas turbine includes a compressor, a combustor, and, drivingly coupled to the compressor, a turbine. The method includes the steps of: measuring one or more operating parameters during a target operating period of the gas turbine, the target operating period being selected so that the target operating period includes the target startup sequence; creating a time series plot from data points derived from the one or more operating parameters measured during the target operating period; comparing the time series plot against a reference time series plot and, based on the comparison, determining a degree of similarity therebetween; and determining a value for the performance characteristic based on the degree of similarity.

Abstract: A bioreactor vessel includes a first compartment configured to receive a suspension comprising cells and a cell culture medium, for use in a cell processing operation, a second compartment for receiving an overflow of the cell culture medium from the first compartment, and an overflow separating the first compartment from the second compartment, the overflow being configured to maintain a level of the cell culture medium in the first compartment

Abstract: An x-ray imaging system is provided. The system includes an x-ray emitter and an x-ray detector. The system further includes a sensor operative to acquire one or more image acquisition factors, and a controller in electronic communication with the x-ray emitter, the x-ray detector, and the sensor. The controller is operative to: acquire an x-ray image of a patient via the x-ray emitter and the x-ray detector; receive the one or more image acquisition factors from the sensor; and generate a view name of the x-ray image based at least in part on the one or more image acquisition factors.

Abstract: Systems and methods of control of a mechanical ventilator include receiving machine data from a mechanical ventilator. A surgical event is detected in the received machine data. Clinical events within the surgical event are detected in the machine data. The machine data and the detected plurality of clinical events are evaluated for compliance with lung protective ventilation recommendations.

Abstract: A coating includes: at least 34.9 percent by mass silicon dioxide; at least 9.1 percent by mass aluminum oxide; and at least 16.1 percent by mass yttrium oxide.

Abstract: Various systems and methods are provided for a turbocharger system. In one example, a system for use with a power generator having a rotary machine including a combustor comprises: a heat exchanger positioned to receive exhaust gases from the combustor; and a turbocharger system, comprising: a low pressure compressor fluidly coupled to the heat exchanger and adapted to supply gases to the heat exchanger; a low pressure turbine and a high pressure turbine each fluidly coupled to the heat exchanger and adapted to receive gases from the heat exchanger; a high pressure compressor fluidly coupled to the rotary machine and the low pressure compressor, adapted to receive gases from the low pressure compressor and supply compressed air to the rotary machine; and a water injector adapted to inject water into a flow path between the low pressure compressor and the heat exchanger.

Abstract: A tube includes a center tube comprising a steel material, a fluid flowing through the center tube; and at least one disk disposed around the center tube, the disk including a thermally conductive material and exposed to an external heat source. The disk conducts heat from the external heat source into the center tube. The center tube transfers the heat from the external heat source into the fluid. The thermal conductivity of the at least one disk is higher than the thermal conductivity of the center tube.

Abstract: A ceramic matrix composite (CMC) component includes at least one seal surface, the at least one seal surface disposed adjacent an interfacing surface for providing a seal therebetween; and a coating disposed on the seal surface. The coating includes an aluminum oxide and/or a silicon dioxide.

Abstract: A flow control system includes at least one flow surface; and at least one rotating detonation actuator including: an annulus extending from an inlet end to an outlet end; an inner wall defining a radially inner boundary of the annulus; and an outer wall defining a radially outer boundary of the annulus. At least one rotating detonation wave travels through the annulus from the inlet end to the outlet end. Combustion gas from the at least one rotating detonation actuator modifies at least one flow characteristic at the flow surface.

Abstract: A locomotive heat exchanger apparatus includes a header having at least one opening, at least one tubular member joined to the header and having an interior passageway in fluid communication with the at least one opening, and a plurality of radial fins extending from the at least one tubular member. The tubular member and the plurality of radial fins may be formed as a unitary component via additive manufacturing without welding or interference fit.

Abstract: An X-ray source target includes a structure configured to generate X-rays when impacted by an electron beam. The structure has an X-ray generating layer comprising X-ray generating material, and a thermally-conductive layer is adjacent to and in thermal communication with the X-ray generating layer. A stress relieving layer is adjacent to the thermally-conductive layer. The thermally-conductive layer is sandwiched between the X-ray generating layer and the stress relieving layer.

Abstract: A propulsion system includes at least one rotating detonation actuator comprising: a flow path extending from an inlet end to an outlet end; an inner wall defining a radially inner boundary of the flow path; an outer wall defining a radially outer boundary of the flow path; and at least one aircraft wing. The rotating detonation actuator is disposed in the aircraft wing. At least one rotating detonation wave travels through the flow path from the inlet end to the outlet end.

Abstract: Provided is an engine health management system and method for determining health of an engine of an aircraft, that includes a data source interface which transmits data from internal and external data sources, a control module that includes a processor and a memory and receives data via the data source interface, creates evaluation methods for evaluating the data received to determine suitable data and storing the suitable data within the memory, and creates a controlled historical airport information repository to process historical data via the processor and generate airport information reports based on the historical data. The system also includes a central computing system communicatively coupled with the control module and the data source interface, which performs data enhancement techniques including linking environmental counts and accumulations with engine data.

Abstract: An inverter system (1) is described. The inverter system (1) includes a DC power source such as a plurality of photovoltaic (PV) panels (8), an inverter (2) and a controller (32). The inverter (2) includes a plurality of semiconductor devices (e.g., controllable semiconductor switches such as IGBTs and anti-parallel connected diodes) arranged in a suitable inverter topology. The inverter (2) includes DC input terminals (4) connected to the PV panels (8) by means of a DC link (10) and at least one AC output terminal (6). When starting the inverter (2), the controller (32) is configured to enable a short circuit state of the inverter (2) by controlling the semiconductor switches to create a short circuit between the DC input terminals (4) such that the inverter (2) carries a current substantially equal to the short circuit current of the PV panels (8).

Abstract: Various methods and systems are provided for a variable geometry turbine. In one example, a system for an engine comprises a turbocharger turbine including a nozzle ring, the nozzle ring including a plurality of stationary vanes, each vane of the plurality of stationary vanes including a plurality of injection ports arranged at an outer surface of the vane and a gas supply system to supply variable gas flow to and out of the plurality of injection ports.

Abstract: Various systems and methods are provided for a turbocharger system. In one example, system for use with a power generator having a rotary machine including a combustor comprises: a heat exchanger positioned to receive exhaust gases from the combustor; and a turbocharger system, comprising: a low pressure turbocharger including a low pressure turbine adapted to receive gas flow from the heat exchanger and a low pressure compressor adapted to supply compressed air to the heat exchanger; a high pressure turbocharger including a high pressure turbine adapted to receive gas flow from the heat exchanger and a high pressure compressor adapted to receive gas flow from the low pressure compressor and supply compressed air to the rotary machine; and a second combustor adapted to inject exhaust gases into a flow path arranged between the heat exchanger and an inlet to each of the high pressure turbine and the low pressure turbine.

Abstract: This application provides methods and systems for automated condition-based maintenance of mechanical systems. Example systems may at least one memory coupled to one or more computer processors that are configured to receive first data from the mechanical system indicative of performance of a first component of the mechanical system, determine, using the first data, a first performance metric for the first component, determine, using the first performance metric, a probability value that a fault has occurred at the first component, and determine, using the probability value, a predicted length of time until failure of the first component.

Abstract: A system for use with an electric machine is provided. The system includes a processor and a memory comprising a set of memory modules, which, when executed by the processor, cause the processor to perform certain operations. The operations include receiving operational data from the electric machine, and generating, based on the operational data, a first set of diagnostic data, by executing a first memory module from the set of memory modules. The operations further include generating, based on the operational data, a second set of diagnostic data, by executing a second memory module from the set of memory modules, the second memory module including a set of parameters associated with a diagnostics model of the electric machine. Furthermore, the operations include effecting, based on the operational data, the first set of diagnostic data, and the second set of diagnostic data, a change in at least one parameter.

Abstract: According to an aspect of the invention, a motor drive circuit includes a first energy storage device configured to supply electrical energy, a bi-directional DC-to-DC voltage converter coupled to the first energy storage device, a voltage inverter coupled to the bi-directional DC-to-DC voltage converter, and an input device configured to receive electrical energy from an external energy source. The motor drive circuit further includes a coupling system coupled to the input device, to the first energy storage device, and to the bi-directional DC-to-DC voltage converter. The coupling system has a first configuration configured to transfer electrical energy to the first energy storage device via the bi-directional DC-to-DC voltage converter, and has a second configuration configured to transfer electrical energy from the first energy storage device to the voltage inverter via the bi-directional DC-to-DC voltage converter.

Abstract: A method of monitoring a patient with respect to a particular medical condition includes providing a machine learning model trained to assign a weight to each of a predefined set of features so as to calculate a risk severity index of a particular medical condition. A long time interval of time-synchronized parameter data is received for each of at least two physiological parameters, and the long time interval is divided into multiple segments each containing a predefined time increment of the parameter data. A set of feature values are determined for the segment based on the parameter data therein, including a feature value for each of the predefined set of features related to the particular medical condition. With the trained machine learning model, assigning a weight to each of the predefined set of features, and then a risk severity index of the particular medical condition is calculated for the long time interval based on the set of feature values.

Abstract: An adaptor assembly includes: an adaptor piece including: a forged outer wall defining a substantially cylindrical shape; a through hole disposed at a top portion of the adaptor piece, the through hole defining an adaptor center cavity; a threaded portion disposed beneath the through hole; and a second hole disposed beneath the threaded portion. The adaptor assembly includes a hex socket including external threading. A diameter of the through hole is smaller than a diameter of the second hole. The hex socket is inserted through the second hole and screwed into the adaptor piece such that the external threading mates with the threaded portion.