Abstract: A pressure vessel is disclosed. The pressure vessel may include a boss, a liner, an O-ring, and a composite overwrap of shell. A boss may comprise a through aperture, a first groove encircling the through aperture, and a first engagement mechanism. A liner may comprise an interior surface, exterior surface, and a second engagement mechanism. The interior surface may define an interior cavity of the pressure vessel. The second engagement mechanism may mechanically engage the first engagement mechanism to secure the liner to the boss. An O-ring may be positioned within the first groove of the boss and abut the exterior surface of the liner. A composite overwrap may surround the liner and at least a portion of the boss.

Abstract: A level measurement system configured to measure minute changes in fluid level. The system integrates a linear variable differential transformer (LVDT) to provide highly accurate level measurement. Low friction materials and a timed vibrator are used to minimize fluid static friction effects on level measurement. A second LVDT can be utilized to compare the level of a fluid containment structure with level changes caused by environmental factors such as evaporation, tidal effects, wind, or the like. The system also includes a computing device to record and compare level changes over time. A housing connects the elements of the system.

Abstract: A pressure vessel is disclosed. The pressure vessel may include a boss, a liner, an O-ring, and a composite overwrap of shell. A boss may comprise a through aperture, a first groove encircling the through aperture, and a first engagement mechanism. A liner may comprise an interior surface, exterior surface, and a second engagement mechanism. The interior surface may define an interior cavity of the pressure vessel. The second engagement mechanism may mechanically engage the first engagement mechanism to secure the liner to the boss. An O-ring may be positioned within the first groove of the boss and abut the exterior surface of the liner. A composite overwrap may surround the liner and at least a portion of the boss.

Abstract: A pressure vessel is disclosed. The pressure vessel may include a boss, a liner, an O-ring, and a composite overwrap of shell. A boss may comprise a through aperture, a first groove encircling the through aperture, and a first engagement mechanism. A liner may comprise an interior surface, exterior surface, and a second engagement mechanism. The interior surface may define an interior cavity of the pressure vessel. The second engagement mechanism may mechanically engage the first engagement mechanism to secure the liner to the boss. An O-ring may be positioned within the first groove of the boss and abut the exterior surface of the liner. A composite overwrap may surround the liner and at least a portion of the boss.

Abstract: A level measurement system configured to measure minute changes in fluid level. The system integrates a linear variable differential transformer (LVDT) to provide highly accurate level measurement. Low friction materials and a timed vibrator are used to minimize fluid static friction effects on level measurement. A second LVDT can be utilized to compare the level of a fluid containment structure with level changes caused by environmental factors such as evaporation, tidal effects, wind, or the like. The system also includes a computing device to record and compare level changes over time. A housing connects the elements of the system.

Abstract: An extensometer probe comprising a linear variable differential transformer (LVDT) and a novel coaxial clamp and extension tube; useful for reducing thermal error, precisely measuring displacement, and deployment in tight spaces like wells or boreholes. A novel float for measuring free surface elevation of liquid; comprising an autonomous vibrator for reducing effects of bubbles, surface tension, and friction. An embodiment of the probe for measuring convergence or dilation in tunnels, bridges, buildings, etc. Embodiments of the probe and float for measuring water level: a total probe for measuring from a single point directly beneath the float, and an evaporation probe for measuring within a hydraulically isolated evaporation pan. A novel mobile monitoring platform deploys the probes within an impoundment, lagoon, pond or other environmental containment structure.

Abstract: A pressure vessel is disclosed. The pressure vessel may include a boss, a liner, an O-ring, and a composite overwrap of shell. A boss may comprise a through aperture, a first groove encircling the through aperture, and a first engagement mechanism. A liner may comprise an interior surface, exterior surface, and a second engagement mechanism. The interior surface may define an interior cavity of the pressure vessel. The second engagement mechanism may mechanically engage the first engagement mechanism to secure the liner to the boss. An O-ring may be positioned within the first groove of the boss and abut the exterior surface of the liner. A composite overwrap may surround the liner and at least a portion of the boss.

Abstract: A pressure vessel is disclosed. The pressure vessel may include a boss, a liner, an O-ring, and a composite overwrap of shell. A boss may comprise a through aperture, a first groove encircling the through aperture, and a first engagement mechanism. A liner may comprise an interior surface, exterior surface, and a second engagement mechanism. The interior surface may define an interior cavity of the pressure vessel. The second engagement mechanism may mechanically engage the first engagement mechanism to secure the liner to the boss. An O-ring may be positioned within the first groove of the boss and abut the exterior surface of the liner. A composite overwrap may surround the liner and at least a portion of the boss.

Abstract: A sports training device is provided that conveys a perceptible cue to a user indicative of a weight transfer event for evaluating timing correctness of such weight transfer event. The device includes an enclosure having a base chamber defined therein and top wall upon which a user stands or places a foot during use. The enclosure flexes or deforms during use, while an amount of user weight supported by the enclosure changes. As the enclosure flexes or deforms, the device conveys the perceptible cue as an audible and/or visual indication of, e.g., the initiate of the weight transfer event.

Abstract: A sports training device is provided that conveys a perceptible cue to a user indicative of a weight transfer event for evaluating timing correctness of such weight transfer event. The device includes an enclosure having a base chamber defined therein and top wall upon which a user stands or places a foot during use. The enclosure flexes or deforms during use, while an amount of user weight supported by the enclosure changes. As the enclosure flexes or deforms, the device conveys the perceptible cue as an audible and/or visual indication of, e.g., the initiate of the weight transfer event.

Abstract: A composite overwrapped pressure vessel is provided which includes a composite overwrapping material including fibers disposed in a resin matrix. At least first and second kinds of fibers are used. These fibers typically have characteristics of high strength and high toughness to provide impact resistance with increased pressure handling capability and low weight. The fibers are applied to form a pressure vessel using wrapping or winding techniques with winding angles varied for specific performance characteristics. The fibers of different kinds are dispersed in a single layer of winding or wound in distinct separate layers. Layers of fabric comprised of such fibers are interspersed between windings for added strength or impact resistance. The weight percentages of the high toughness and high strength materials are varied to provide specified impact resistance characteristics. The resin matrix is formed with prepregnated fibers or through wet winding. The vessels are formed with or without liners.

Abstract: A mobile barrier for use in wind control, reduction of blowing litter and suspension and transport of airborne contaminants with applications in areas of landfill maintenance, agriculture, erosion control, and snow control is described. The mobile barrier is a large mesh panel supported in an orientation that is at a slight angle to the vertical. The panel is supported using a pair of upright members that extend upward from a base which is freestanding. A vertically adjustable lifting boom is also supported by the upright members, and is used to secure the mobile barrier to lifting machinery for purposes of transport. Further, a system for controlling the spread of wind-borne contaminants will be described which includes a mobile barrier in combination with a misting device.

Abstract: A system used to insulate soil, most practically in waste sites and the like, including a plurality of geoinsulation blankets and an anchoring means. Each blanket has a flexible plastic casing sealed around its perimeter with at least one air vent through it, a resilient insulation batt contained within the casing, and attachment means of the hook and loop type positioned along its perimeter to adjoin overlapping edges of blankets in the system.

Abstract: This invention deals with casings useful for fabricating articles used in insulation methods and a blanket type thermal insulation formed from such articles that can be placed on substrates to prevent exaggerated changes in temperature of the substrate. The flexibility of the blanket allows for its use on a variety of configurations of substrates.