Abstract: A stacking chair system with a plurality of stacking chairs each comprising a seat frame and a backrest frame, and a pair of side legs on each side of the seat frame. A pair of side supports extends from a top of the backrest to a front of the seat. An upper chair is stackable upon a lower chair, with the pair of side legs of the upper chair inside the pair of side supports of the lower chair, and the pair of side legs of the lower chair inside the pair of legs of the upper chair.

Abstract: A banquet chair comprises a seat and a backrest carried by a plurality of legs. A pair of arcuate leaf springs flexibly couples the backrest to the plurality of legs. The pair of arcuate leaf springs is spaced-apart, and each is located closer to a different outside edge of the seat and the backrest than to each other or a middle of the seat and the backrest. Each of the pair of arcuate leaf springs has an outermost edge exposed through a lateral perimeter of the backrest.

Abstract: A two-piece chair frame assembly comprises a back piece and a front piece joined together to form a chair frame. The back and front pieces are separate and discrete pieces until joined together. The back piece comprises a pair of rear legs, a backrest frame, and a back seat frame portion. The front piece comprises a pair of front legs and a front seat frame portion. The front and back seat frame portions join together to form a seat frame. The back and front pieces have different surface characteristics.

Abstract: A power supply failover system/method providing uninterruptable power to protected load devices (PLD) is disclosed. The system includes a failover switch controller (FSC) with inputs from an AC I/V monitor (AIV), AC cycle counter (ACC), failover switch timer (FST), and overcurrent protection timer (OPT). The FSC utilizes these inputs to control failsafe switching of a bypass phase switch (BPS) and AC phase switch (ACS) to the PLD when power from the APS is determined to be good by the AIV. When power from the APS is determined to be compromised by the AIV, the FPS disables the ACS/BPS and enables a DC switch (DCS) and battery isolation switch (BIS) to connect a DC source to the PLD after a time period determined by the FST. APS/DCS overcurrent protection is limited by OPT intervals allowing a smooth transition between the APS to DCS during power failover/failback.

Abstract: A peak power control (PPC) system/method providing a uninterruptable power supply (UPS) to one or more protected load devices (PLD) supplied by power supply units (PSU) serviced by a primary power source (PPS) and a secondary power source (SPS) is disclosed. The PPS is configured to provide only a portion of peak power demand (PPD) required by the PSU to support the PLD power demand. During periods where power supplied by the PPS is insufficient to support the PLD power demand, the SPS augments the power supplied to the PSU to meet the PLD power demand. During periods where power supplied by the PPS is sufficient to meet the PLD power demand, the SPS is recharged by any excess power available from the PPS. Power provisioning controls (PPC) generate state control information (SCI) instructing the PLD to modulate computing clock speeds and/or prioritize PLD computing tasks in real-time.

Abstract: A chair has a frame with legs, a seat hoop carried by the legs, and a backrest extending above the seat hoop. A seat is carried by the seat hoop of the frame, and has a seat base with a cushion. A perimeter lip circumscribes the seat base and rests over the seat hoop. The seat base has a flexible and resilient corrugated interior capable of deflecting under weight and returning when the weight is removed. An annular bottom projection projects from the seat base between the perimeter lip and the corrugated interior and into the seat hoop, and has an annular bottom surface substantially flush with the lower surface of the seat hoop.

Abstract: A flange bolt cutter for separating two connected flanges. The flange bolt cutter contains a circular saw blade connected to an flange mount which can be vertically adjusted relative to the flange mount and/or includes two arms which can be pivotally adjusted relative to each other.

Abstract: A folding table has an integrated electrical power outlet. The table has a tabletop with a horizontal orientation supported in an elevated position by at least a pair of legs or leg assemblies pivotally coupled at opposite sides of the tabletop and pivotal between a closed storage position against the tabletop and an open elevated position extending transverse to the tabletop. The tabletop has a bottom framework with a perimeter rail extending along at least a portion of a perimeter the tabletop and defining at least a portion of the perimeter of the tabletop. The perimeter rail is segmented and defines a rail gap in the perimeter rail, with the perimeter rail having opposing ends at the rail gap. The electrical power outlet is spliced into the perimeter rail at the rail gap and spans the rail gap in the perimeter rail.

Abstract: A foldable stool comprises legs pivotally coupled together and a seat pivotally coupled to and carried by the legs. The seat is split into a pair of seat portions that is pivotally coupled together. A handle is formed in, and is coextensive with, one of the pair of seat portions. The handle is pivotal with respect to another of the seat portions. A lock positively holds the handle with respect to the another of the seat portions when the pair of seat portions are in a seat orientation.

Abstract: A flange bolt cutter for separating two connected flanges. The flange bolt cutter contains a circular saw blade connected to an flange mount which can be vertically adjusted relative to the flange mount and/or includes two arms which can be pivotally adjusted relative to each other.

Abstract: Various examples are provided for dynamic simulation of wind velocity and pressure. In one embodiment, among others, a dynamic wind simulator includes a fan and a fast-acting damper connected to an inlet of the fan. The fast-acting damper configured to modulate airflow provided by the fan at frequencies up to 10 Hz. In another embodiment, a system includes a fan and an air outlet path of the fan connected to a testing assembly configured to support a specimen for testing. An air inlet path of the fan includes a fast-acting damper configured to modulate airflow provided by the fan to the testing assembly at frequencies up to 10 Hz. The testing assembly may include a pressure chamber and/or a test section.

Abstract: A dual input power supply system/method providing uninterruptable power to a protected load device (PLD) is disclosed. The system includes hybrid switch devices (HSD) comprising semiconductor and relay/contactors that minimize the OPERATE/RELEASE times associated with switchover from a primary power source (PPS) to a secondary power source (SPS). An operate/release controller (ORC) monitors the condition of power provided by the PPS and SPS and determines the optimal transfer time to activate the HSD and switch between the PPS and SPS based on the PLD configuration. Use of the HSD in conjunction with the ORC permits a wide variety of series permutated AC/DC primary (PPS) and secondary (SPS) power sources, EMI snubbers (EMS), bridge rectifier diodes (BRD), AC-DC converters (ADC), and DC-DC converters (DDC) to service the PLD, while simultaneously reducing storage capacitors normally required to cover the OPERATE/RELEASE times associated with traditional PPS/SPS switchover/failover delays.

Abstract: A power supply output configuration system/method providing a digitally controlled uninterruptable power supply (UPS) to protected load devices (PLD) configured as power supply units (PSU) serviced by one or more power supply sources (PSS) is disclosed. The system generally includes a number of power supply sources (PSS) that are monitored by power condition sensing (PCS) circuitry that determines individual power source states within the PSS. This physical state information is used by a digitally controlled switching network (DSN) that reconfigures the electrical connections between the PSS and the individual PLD elements to properly route power from the PSS to the PLD in the event of individual PSS failures. The DSN receives phase/voltage state information from the PSS to ensure that current between the PSS and PLD is transferred in a synchronized manner and that PSS resources are properly protected during the switching transition.

Abstract: A power supply configuration system/method providing a digitally controlled uninterruptable power supply (UPS) to protected load devices (PLD) configured as power supply units (PSU) serviced by one or more power supply sources (PSS) is disclosed. The system generally includes a number of power supply sources (PSS) that are monitored by power condition sensing (PCS) circuitry that determines individual power source states within the PSS. This physical state information is used by a digitally controlled switching network (DSN) that reconfigures the electrical connections between the PSS and the individual PLD elements to properly route power from the PSS to the PLD in the event of individual PSS failures. The DSN receives phase/voltage state information from the PSS to ensure that current between the PSS and PLD is transferred in a synchronized manner and that PSS resources are properly protected during the switching transition.

Abstract: A folding mesh chair includes a seat and a backrest carried between opposite frame sides. The chair has an unfolded seating position in which the seat pivots to extend from the frame sides and bottoms of front and rear legs move apart, and a folded position in which the seat pivots toward the frame sides and the front and rear legs move together. One or both of the seat and the backrest have a continuous sheet of flexible and elastic mesh or patterned open texture plastic held across and substantially covering an opening in an all-plastic hoop fixed between the frame sides.

Abstract: An uninterruptable power supply (UPS) system/method providing power line conditioning and power factor correction (PFC) that incorporates centralized battery backup energy storage architecture is disclosed. The system generally comprises an AC-DC power supply with active PFC (power factor correction) function, a battery transfer switch, an isolated battery charger placed between the utility power source and battery strings, battery strings connecting the battery charger and the battery transfer switch, EMI/Lightning circuitry that provides lighting/line surge protection as well noise suppression functions, and a controller monitoring the quality of the utility power source. Uninterruptable power for data centers is achieved in this context via use of the battery strings, battery transfer switch, battery charger, and controller system configuration. Disclosed methods associated with this system generally permit the UPS to operate in a distributed fashion in support of computing systems within data centers.

Abstract: According to one aspect of the present disclosure, an outdoor lighting fixture, including a solar panel, light source, rechargeable battery, and control circuit enclosed within a reversibly sealed housing, further includes a magnetic switch in communication with the control circuit. The switch enables an operator to adjust the settings and functions of the fixture without opening the housing, which would expose the control circuit, battery, light source, and other electrical components to the environment. In certain embodiments, the light source is one or more light emitting diodes powered by the solar panel via the battery and control circuit.