Abstract: A personal hydration system with a flow-restricting device. The hydration system includes a fluid reservoir configured to store fluid and a tube assembly that is coupled to the reservoir and configured to deliver fluid to a user's mouth, such as via a mouthpiece. The system further includes a flow-restricting device that is configured to selectively restrict the flow of drink fluid between the reservoir and the mouthpiece. In some embodiments, the flow-restricting device includes a body and a rotatable core.

Abstract: A system and method for recovering thermal energy from a fuel processing system comprising a fuel processor and a fuel cell stack. The system includes a heat recovery system including a heat exchange fluid that recovers thermal energy from such sources as the combustion exhaust from the fuel processor, the cathode chamber exhaust from the fuel cell stack and/or the fuel cell stack directly.

Abstract: Membrane modules that contain one or more hydrogen-selective membranes, methods for preparing the same, and hydrogen purification systems, fuel processors and devices containing the same. In some embodiments, the membrane modules include one or more hydrogen-selective membranes supported on a screen structure, of which a variety of embodiments are disclosed. In some embodiments, the membrane or membranes are adhesively mounted on the screen structure during assembly. In some embodiments, the screen structure includes a plurality of screen members adhesively mounted together during assembly. In some embodiments, the screen structure includes a coating.

Abstract: A window buck having members forming a frame with the members including adjustable components enabling use of the buck in walls under construction of different thicknesses. Extruded front and rear components of each buck member are adjustably interengaged with one another and fixable in a desired relationship to suit the wall being constructed. External channels formed in the buck members are open lengthwise to permit reception of angular connectors for joining the buck members at their intersecting ends. The connectors may be of reusable rebar and removable upon completion of the wall. The components of each buck member are lockable by inserted fasteners. A modified window buck includes a central component for use in walls of extraordinary thicknesses. A further modified window buck may include buck members of unitary construction.

Abstract: A golf ball marking tool. The tool includes a receiving portion adapted to receive a portion of the golf ball, a gripping portion adapted to grip the golf ball, and a guide surface configured to define a marking position on the golf ball. The tool may also include an opening to facilitate disengagement of the ball from the gripping portion.

Abstract: A system and method for preventing damage to a fuel cell stack resulting from impurities in the product stream from a fuel processor, such as may occur should the separation region of the fuel processor fail. The system and method include detecting the concentration of at least one component of the product stream and isolating the fuel cell stack should this concentration exceed an acceptable threshold level. Examples of impurities in the product stream include; carbon monoxide, carbon dioxide, methane and water.

Abstract: Methods for producing medium-density articles from recovered high-density tungsten alloy (WHA) material, and especially from recovered WHA scrap. In one embodiment of the invention, the method includes forming a medium-density alloy from WHA material and one or more medium- to low-density metals or metal alloys. In another embodiment, medium-density grinding media, such as formed from the above method, is used to mill WHA scrap and one or more matrix metals into particulate that may be pressed and, in some embodiments, sintered to form medium-density articles therefrom.

Abstract: A hydrogen-permeable metal membrane with increased hydrogen flux compared to conventional metal membranes is disclosed. Without sacrificing selectivity, the membrane enables a greater throughput of purified hydrogen. A method for preparing the invention includes at least one etching step in which a controlled volume of etchant is used to selectively remove material from the membrane's surface. Methods for repairing holes or other defects in the membrane are also disclosed.

Abstract: Inline roller skates are provided with independent suspension systems, separately suspending one or more of a plurality of wheels. The wheels are mounted rotatably on axles, and the axles are held nominally parallel to the sole of the boot. The suspension systems include guides that maintain the axles parallel to the sole of the boot even as the wheels and axles move vertically in response to bumps and other forces.

Abstract: A children's ride-on vehicle that simulates a horse-drawn carriage. The invention includes a carriage section adapted to support a rider, and a horse section coupled to the carriage. One or more wheels are coupled to the carriage and/or horse sections. In one embodiment, the vehicle includes a rein assembly configured to allow a child to steer at least one of the wheels. In another embodiment, at least one of the wheels is configured to impart a vertically reciprocating motion to the vehicle when the vehicle is moving. In another embodiment, the vehicle includes a sound generation system to simulate noises produced by a horse.

Abstract: A self-priming centrifugal pump including a supplementary vacuum pump and a float valve. The vacuum pump serves to draw liquid to the pump for priming and the float valve shut of flow to the vacuum pump when liquid reaches a predetermined level to prevent entry of liquid into the vacuum pump. In some embodiments the float valve includes an o-ring valve seal and the vacuum pump includes an oil delivery system to distribute oil from an oil reservoir to improve lubrication.

Abstract: A children's ride-on vehicle that resembles a riding lawnmower or tractor. The vehicle includes a drive assembly with a battery-powered motor, and a frame that is adapted to support a child. The ride-on further includes a bubble-producing mechanism adapted to produce a stream of bubbles.

Abstract: A children's ride-on vehicle and associated rotation translation assembly are provided. The children's ride-on vehicle includes a body, a plurality of wheels rotatably mounted to the body, and at least one steerable wheel. The vehicle also includes a steering mechanism including a steering column and an associated steering handle. The steering handle is configured to be actuated by a rider sitting on a seat of the vehicle to thereby cause the steerable wheel to turn. The vehicle further includes a direction responsive member extending from the outer surface of the body, the direction responsive member being coupled to the steering mechanism through a linkage assembly and configured to rotate in response to movement of the steering handle.

Abstract: A fiberglass railcar roof that includes a fiberglass surface with a central portion and a peripheral portion adapted to be joined to the upper edge region of a railcar. In some embodiments, the roof includes plural elongate fiberglass ribs extending transverse to the longitudinal axis of the fiberglass surface. In some embodiments, the roof is adapted for use on refrigerated, high cube and cryogenic railcars. Methods for forming the invented roofs and roof panels are also disclosed.

Abstract: An improved battery for children's ride-on vehicles. The battery includes a sealed housing that contains an internal circuit breaker that disconnects the flow of energy from the battery to the vehicle's one or more motors upon actuation. Upon removal of the actuating event, the circuit breaker automatically resets to reestablish the electrical circuit connecting the battery and the vehicle's one or more motors. The battery may alternatively include a manual reset that is accessible external the housing. Additionally, the battery may also include an internal one-shot fuse to protect against catastrophic failure of the battery.

Abstract: The invented system includes a fuel-cell system comprising a fuel cell that produces electrical power from air (oxygen) and hydrogen, and a fuel processor that produces hydrogen from a variety of feedstocks. One such fuel processor is a steam reformer which produces purified hydrogen from a carbon-containing feedstock and water. In the invented system, various mechanisms for implementing the cold start-up of the fuel processor are disclosed, as well as mechanisms for optimizing and/or harvesting the heat and water requirements of the system, and maintaining desired the feed ratios of feedstock to water in the fuel processor and purity of the process water used in the system.

Abstract: A fuel processing assembly adapted to produce hydrogen gas from a carbon-containing feedstock. The fuel processing assembly includes a fuel processor, such as a steam reformer. The fuel processing assembly further includes a feed assembly adapted to deliver a carbon-containing feedstock, such as a hydrocarbon, to the fuel processor. In some embodiments, the fuel processing system includes a fuel cell stack that includes at least one fuel cell adapted to produce electrical power from hydrogen gas produced by the fuel processor.

Abstract: An enhanced vision system and method for use with vision systems with an imager sensitive to infrared radiation of less than 2-microns in wavelength, to produce a first image signal. Another imager sensitive to infrared radiation at least 3-microns in wavelength may be used to produce a second image signal. Preferably, the first image signal represents sensed electric light sources, and the second image signal represents sensed background such as terrain, runways, structures, and obstacles. A signal processor combines an image signal representing locally maximum values of the first image signal with the second image signal to create a displayed image.

Abstract: A personal hydration system with an improved mouthpiece for use in providing fluid for delivery to a user. The mouthpiece includes a neck that is adapted to be mounted on a supply tube to a hydration system and which is joined to a resilient head. The head includes a dispensing face with a pair of lips that define a normally closed slit, through which fluid is dispensed from the mouthpiece, a perimeter and a minimum dimension between opposed points on the perimeter. The bite region extends from the perimeter to a shoulder, which joins the bite region and the neck. From a closed position, in which the lips extend against each other to close the slit and prevent fluid from being dispensed through the slit, the mouthpiece is deformable to a dispensing position in which the lips are spread at least partially away from each other to allow fluid to be dispensed through the lips.