Abstract: A sensing device for a metrology system includes a measurement region and a body. The body includes at least one light source adapted to emit a light onto a workpiece, and at least one sensor arranged to receive light from the light source after it has been reflected by the workpiece. The sensing device further includes at least one heat exchanger having an inlet and an outlet for exchanging heat between the measurement region and an outside of the measurement region.

Abstract: A steam vaporizer assembly includes an internal steam generator having a vessel configured to hold water, a vaporizer unit having a heating element configured to heat the water to generate saturated steam; and a controller configured to: cause the heating element to heat the water to a stand-by temperature; and while maintaining a water level of the water in the vessel between two control points: maintain the water in the vessel at the stand-by temperature until steam generation is required, and when steam generation is required, heating the water in the vessel from the stand-by temperature to a temperature at or above a vaporization temperature of the water using a heating element, to generate the steam.

Abstract: A fuel cell module includes a plurality of fuel cell stacks; a manifold configured to provide process gases to and receive process gases from the plurality of fuel cell stacks; and a module housing enclosing the plurality of fuel cell stacks and the manifold. Each of the plurality of fuel cell stacks is individually installable onto the manifold by lowering the fuel cell stack onto the manifold, and is individually removable from the manifold by raising the fuel cell stack from the manifold.

Abstract: A fuel cell module includes a plurality of fuel cell stacks; a manifold configured to provide process gases to and receive process gases from the plurality of fuel cell stacks; and a module housing enclosing the plurality of fuel cell stacks and the manifold. Each of the plurality of fuel cell stacks is individually installable onto the manifold by lowering the fuel cell stack onto the manifold, and is individually removable from the manifold by raising the fuel cell stack from the manifold.

Abstract: A fuel cell module includes a plurality of fuel cell stacks; a manifold configured to provide process gases to and receive process gases from the plurality of fuel cell stacks; and a module housing enclosing the plurality of fuel cell stacks and the manifold. Each of the plurality of fuel cell stacks is individually installable onto the manifold by lowering the fuel cell stack onto the manifold, and is individually removable from the manifold by raising the fuel cell stack from the manifold.

Abstract: The invention relates to cementitious or grout compositions and drilling fluids including reinforcement fibers and methods relating thereto. The cementitious or grout compositions include dry blend material and reinforcement fibers. Each of the fibers can have one or more of a pre-selected mean length, denier, diameter and aspect ratio to improve dispersion in dry blending the cementitious or grout compositions.

Abstract: A surge protection device for an LED lighting system provides a failure detection circuit which shuts off an indicator lamp when upon failure of surge protection components. Surge suppression circuits are coupled between respective first and second, and second and third lines for receiving an AC mains input. The surge suppression circuits include a thermal cutoff device and a clamping device, with a fault detection circuit coupled between each respective series circuit. The fault detection circuit activates an indicator lamp when the surge protection device is in a normal operation mode. The fault detection circuit shuts off the indicator lamp when the surge protection device is in a short circuit fault mode, corresponding to failure of at least one component from a surge suppression circuit. Detection of an unlit indicator lamp may serve as a warning to an operator that the associated surge protection device should be replaced.

Abstract: The invention relates to modified reinforcement fibers for use in a variety of applications. The modification includes crimping linear or straight reinforcement fibers to create a deformed or different shaped reinforcement fiber. Examples of the shaped fibers resulting from crimping include w-shaped, s-shaped, z-shaped and wedge-shaped.

Abstract: A fuel cell module includes a plurality of fuel cell stacks; a manifold configured to provide process gases to and receive process gases from the plurality of fuel cell stacks; and a module housing enclosing the plurality of fuel cell stacks and the manifold. Each of the plurality of fuel cell stacks is individually installable onto the manifold by lowering the fuel cell stack onto the manifold, and is individually removable from the manifold by raising the fuel cell stack from the manifold.

Abstract: An LED driver is provided having a gate drive integrated circuit with an adaptive operating mode which operates between a first operating mode and a second operating mode. The gate drive integrated circuit is designed to primarily operate in the first operating mode which includes a predetermined minimum on-time and a predetermined maximum off-time for enabling and disabling gate drive signals to a switch, respectively. The second operating mode begins at the minimum on-time and the maximum off-time. The LED driver further includes a controller configured to monitor an on-time and an off-time of the gate drive signals. The controller is further configured responsive to the second operating mode to fix the on-time equal to the predetermined minimum on-time and to continually adjust the off-time greater than or equal to the maximum off-time.

Abstract: A steam vaporizer assembly includes an internal steam generator having a vessel configured to hold water, a vaporizer unit having a heating element configured to heat the water to generate saturated steam; and a controller configured to: cause the heating element to heat the water to a stand-by temperature; and while maintaining a water level of the water in the vessel between two control points: maintain the water in the vessel at the stand-by temperature until steam generation is required, and when steam generation is required, heating the water in the vessel from the stand-by temperature to a temperature at or above a vaporization temperature of the water using a heating element, to generate the steam.

Abstract: An air to air heat exchanger includes a first and a second cooling air flow passage extending over a core depth of the heat exchanger. A heated air flow passage is arranged between the cooling air flow passages, and extends over a first percentage of the core depth. Thermally conductive separators are arranged between the heated air flow passage and each of the cooling air flow passages. A first structurally reinforced section is provided between the separators, and extends from a cooling air inlet face in the core depth direction over a second percentage of the core depth. A second structurally reinforced section is provided between the separators, and extends from a cooling air outlet face in the core depth direction over a third percentage of the core depth. The sum of the first, second, and third percentages is greater than 100 percent.

Abstract: The invention relates to modified reinforcement fibers for use in a variety of applications. The modification includes crimping linear or straight reinforcement fibers to create a deformed or different shaped reinforcement fiber. Examples of the shaped fibers resulting from crimping include w-shaped, s-shaped, z-shaped and wedge-shaped.

Abstract: The invention relates to cementitious or grout compositions and drilling fluids including reinforcement fibers and methods relating thereto. The cementitious or grout compositions include dry blend material and reinforcement fibers. Each of the fibers can have one or more of a pre-selected mean length, denier, diameter and aspect ratio to improve dispersion in dry blending the cementitious or grout compositions.

Abstract: The invention relates to modified reinforcement fibers for use in a variety of applications. The modification includes crimping linear or straight reinforcement fibers to create a deformed or different shaped reinforcement fiber. Examples of the shaped fibers resulting from crimping include w-shaped, s-shaped, z-shaped and wedge-shaped.

Abstract: A system for a linear isolated power supply circuit may include a boost converter having a boost inductor winding and an auxiliary side winding, the auxiliary side winding configured to be magnetically coupled to the boost inductor winding. The linear isolated power supply circuit includes a voltage sensing circuit coupled to the auxiliary side winding, the voltage sensing circuit configured to measure an input voltage at an isolated circuit associated with the auxiliary winding. The linear isolated power supply circuit includes a processor configured to receive the measured input voltage from the voltage sensing circuit and to cause at least one operation to be performed by the processor based at least in part upon the measured input voltage. Methods and apparatuses corresponding to the system are provided.

Abstract: The invention relates to cementitious or grout compositions and drilling fluids including reinforcement fibers and methods relating thereto. The cementitious or grout compositions include dry blend material and reinforcement fibers. Each of the fibers can have one or more of a pre-selected mean length, denier, diameter and aspect ratio to improve dispersion in dry blending the cementitious or grout compositions.

Abstract: An apparatus and a method monitor the status of a thermal protection device within a surge protection device (SPD). A monitoring circuit connected to a monitor output signal of the SPD is responsive to the presence of a time-varying voltage on the monitor output signal. The time-varying voltage is present during a selected half of each AC cycle when the thermal protection device is intact such that the SPD is no longer providing surge protection. The time-varying voltage is not present when the thermal protection device is no longer intact. When the time-varying voltage is not present for a selected duration, the monitoring circuit illuminates a light-emitting diode (LED) to indicate that the thermal protection device has failed.

Abstract: The invention relates to cementitious or grout compositions and drilling fluids including reinforcement fibers and methods relating thereto. The cementitious or grout compositions include dry blend material and reinforcement fibers. Each of the fibers can have one or more of a pre-selected mean length, denier, diameter and aspect ratio to improve dispersion in dry blending the cementitious or grout compositions.

Abstract: A light fixture is provided or retrofitted with wireless LED lighting system requiring no additional wireless devices. An LED driver housing has power output terminals and control input terminals for an LED driver disposed therein. An LED lighting device includes driver input terminals to receive the output power from the LED driver, and to which an LED array and a wireless communication module are coupled to receive power therefrom. The wireless communication module comprises a transceiver configured to send and receive wireless communication signals with respect to an external device, and a controller linked to the transceiver and configured to generate lighting output control signals. Dimming control signals received via the transceiver may be processed by the controller and transmitted to the driver without requiring additional hardware or wiring within or attached to the driver. The lighting device also can wirelessly receive occupancy sensor data or LED configuration information.