Abstract: A portable motorized fluid sprayer device is described, having a fluid tank and a pump manifold configured to pump fluid from the tank and into a connected fluid conveying structure (e.g., a hose, wand, nozzle, handle and/or similar structures). The manifold may include an electric motor, a gear pump, a controller, and a battery. Additionally, the fluid sprayer device may allow for spraying fluid with consistent pressure, recirculation of fluid within the tank, a gear pump for spraying or suctioning fluid from the fluid conveying structure, a safety lever, the ability to separate the pump manifold from the fluid tank, and other features.

Abstract: A portable shear testing device includes a shear force unit that has two elongated jaw members that are positioned adjacent to each other. One of the jaw members can be moved away from the other, stationary jaw member. One of the jaw members is moved by a pivotally mounted lever that laterally moves a load transfer block connected to the jaw member. A digital load cell is positioned between the lever and the load transfer block and a threaded knob is rotated to press against the lever.

Abstract: Recoil buffers are described that can complete a displacement cycle in about 0.06 seconds or less. The buffer can include two springs and three one-way valves through the piston within the buffer housing or can include a single spring and a one-way shim valve through the piston within the buffer housing.

Abstract: A sensor system is disclosed that includes a plurality of sensors, a deployment system for deploying the sensors, a control and charging system for receiving sensor data and optionally charging the batteries within the sensors, and one or more algorithms employed by the sensor system for processing, analyzing, and otherwise using data received by the plurality of sensors.

Abstract: An air purifying respirator includes a dual stage fan that sucks outside air in through the filter canisters and then pushes the filtered air on to the user's mask or hood, where excess air escapes. A differential pressure sensor measures the pressure within the passages after the dual stage fan and in the ambient environment to estimate the user's rate of respiration. The microcontroller monitors the estimated rate of respiration, as well as the estimated altitude and its estimated amount of oxygen to calculate a user's filtered air flow need. The microcontroller adjusts the van via a fan controller to the appropriate air flow level. The microcontroller further monitors the battery level, filter life, and for low pressure within the user's mask and operates their respective indicators when problem levels arise. The battery supplies power to the microcontroller, power on/off button, and the dual stage fan.

Abstract: An air filtration system is described that is suited for CBRN and ColPro applications, and has an integrated inertial particle separator (IPS) and scavenge fan blower as a pre-dust/particle filter, a variable speed fan blower, and a filter housing that mounts two gas-particulate filter sets. The variable speed fan blower, managed by a motor control unit and motor speed algorithm, automatically adjusts its speed to maintain constant air flow regardless of its altitude.

Abstract: Recoil buffers are described that can complete a displacement cycle in about 0.06 seconds or less. The buffer can include two springs and three one-way valves through the piston within the buffer housing or can include a single spring and a one-way shim valve through the piston within the buffer housing.

Abstract: A portable shear testing device includes a shear force unit that has two elongated jaw members that are positioned adjacent to each other. One of the jaw members can be moved away from the other, stationary jaw member. One of the jaw members is moved by a pivotally mounted lever that laterally moves a load transfer block connected to the jaw member. A digital load cell is positioned between the lever and the load transfer block and a threaded knob is rotated to press against the lever.

Abstract: A wearable sensor badge utilizes a carbon nanotube (CNT) sensor array for selective sensing of chemicals from naturally diffused air or by sampling air using a pump/fan for higher sensitivity. An embedded microcontroller monitors the resistance of the sensing elements and by using an advanced detection algorithm the presence of TICs and/or CWAs are identified.

Abstract: A wearable sensor badge utilizes a carbon nanotube (CNT) sensor array for selective sensing of chemicals from naturally diffused air or by sampling air using a pump/fan for higher sensitivity. An embedded microcontroller monitors the resistance of the sensing elements and by using an advanced detection algorithm the presence of TICs and/or CWAs are identified.

Abstract: A wearable sensor badge utilizes a carbon nanotube (CNT) sensor array for selective sensing of chemicals from naturally diffused air or by sampling air using a pump/fan for higher sensitivity. An embedded microcontroller monitors the resistance of the sensing elements and by using an advanced detection algorithm the presence of TICs and/or CWAs are identified.

Abstract: An air purifying respirator includes a dual stage fan that sucks outside air in through the filter canisters and then pushes the filtered air on to the user's mask or hood, where excess air escapes. A differential pressure sensor measures the pressure within the passages after the dual stage fan and in the ambient environment to estimate the user's rate of respiration. The microcontroller monitors the estimated rate of respiration, as well as the estimated altitude and its estimated amount of oxygen to calculate a user's filtered air flow need. The microcontroller adjusts the van via a fan controller to the appropriate air flow level. The microcontroller further monitors the battery level, filter life, and for low pressure within the user's mask and operates their respective indicators when problem levels arise. The battery supplies power to the microcontroller, power on/off button, and the dual stage fan.

Abstract: An air filtration system is described that is suited for CBRN and ColPro applications, and has an integrated inertial particle separator (IPS) and scavenge fan blower as a pre-dust/particle filter, a variable speed fan blower, and a filter housing that mounts two gas-particulate filter sets. The variable speed fan blower, managed by a motor control unit and motor speed algorithm, automatically adjusts its speed to maintain constant air flow regardless of its altitude.

Abstract: A method and system for detecting the presence of chemical and/or biological agents are disclosed. An additive, which may comprise a reactant and/or a catalyst selected for its capacity to react with, or to force a reaction involving a target chemical and/or biological agent, may be introduced into a sample of an ambient environment to be monitored. The additive may then react with the target agent, or, as a catalyst, may drive a reaction with the target agent, resulting in a reaction product that may be detected by one or more sensors or sensor arrays. The method and system may incorporate a plurality of sensor types in order to enhance the specificity of the method and system.

Abstract: A method and system for detecting the presence of chemical and/or biological agents are disclosed. An additive, which may comprise a reactant and/or a catalyst selected for its capacity to react with, or to force a reaction involving a target chemical and/or biological agent, may be introduced into a sample of an ambient environment to be monitored. The additive may then react with the target agent, or, as a catalyst, may drive a reaction with the target agent, resulting in a reaction product that may be detected by one or more sensors or sensor arrays. The method and system may incorporate a plurality of sensor types in order to enhance the specificity of the method and system.