Abstract: A waveguide grating. The waveguide grating includes a rib composed of a first material. A first portion of the waveguide has a first layer on the rib, the first layer being composed of a second material; and a second layer on the first layer, the second layer being composed of a third material, the third material having a higher index of refraction than the first material.

Abstract: Provided is a an active shooter monitoring and incapacitation system that can augment active security forces control during emergencies at schools, churches, military, and government institutions. The system includes one or more cameras that are controlled remotely by an operator. If a hostile person or active shooter is located, a warning system, such as an audio/visual alert and laser dazzler is activated to alert nearby people of the threat to vacate and to notify the active shooter that he/she is required to halt any hostile actions. If the hostile person does not cease his activities, one or more stun guns contained within the system are then utilized to incapacitate the active shooter with a large electric shock, thereby incapacitating the person until the authorities arrive.

Abstract: A waveguide grating. The waveguide grating includes a rib composed of a first material. A first portion of the waveguide has a first layer on the rib, the first layer being composed of a second material; and a second layer on the first layer, the second layer being composed of a third material, the third material having a higher index of refraction than the first material.

Abstract: A three piece adjustable and removable covering, consisting of an assembly of a stationary shield fitted with an adjustable/detachable upper shield and a removable rear shield for protecting a camera from inclement weather which is mounted to a support bracket and a hot shoe assembly for attachment of the bracket and covering(s) to the equipment. The bracket is a preformed shape which, with the shield(s), forms the protective covering. Nuts, washers, and bolts are employed to affix the bracket to the protective shield(s) and to the equipment.

Abstract: A grading bar leveling ground includes a panel formed as a blade having a forward-facing-surface and a backward-facing-surface, a plurality of gussets, at least one horizontal member coupled to the panel, and a support-and-coupling-member. The grading bar is attachable to an implement including machine such as a front loader tractor, a skid steer loader, an excavator backhoe, a tractor backhoe, or a rear three point tractor hitch and is configured for smoothing and leveling ground as manipulated by the implement.

Abstract: Various embodiments of the invention can include a portable power system with multiple power generation modes and mode based adjustable drag configuration. Embodiments of the invention include a system with an adjustable inlet ram air inlet, a ram air powered section (e.g. a ram air powered turbine with an adjustable ram air inlet), a fuel powered section, e.g., jet fuel powered auxiliary power unit, which is used when insufficient ram air is present or a power surge requires augmented power generation, and a generator section selectively coupled with the ram air powered section and the fuel powered section.

Abstract: Various embodiments of the invention can include a portable power system with multiple power generation modes and mode based adjustable drag configuration. Embodiments of the invention include a system with an adjustable inlet ram air inlet, a ram air powered section (e.g. a ram air powered turbine with an adjustable ram air inlet), a fuel powered section, e.g., jet fuel powered auxiliary power unit, which is used when insufficient ram air is present or a power surge requires augmented power generation, and a generator section selectively coupled with the ram air powered section and the fuel powered section.

Abstract: A barrier assembly for use with a downhole pump includes a first tubular adapter, a second tubular adapter, and a braided sleeve disposed between the first tubular adapter and the second tubular adapter. The sleeve is configured to block passage of a particulate.

Abstract: A system for arresting an unmanned aerial vehicle (UAV). In an illustrative embodiment, a crane has an arrestment receiver that can pivot around the crane. A UAV has a hook on one of its wings that can latch onto the arrestment receiver during flight. After latching onto the arrestment receiver, the UAV pivots around the end of the crane until the UAV comes to rest. The UAV and the arrestment receiver each include optical alignment systems that facilitate the connection between the hook and the arrestment receiver.

Abstract: A system for arresting an unmanned aerial vehicle (UAV). In an illustrative embodiment, a crane has an arrestment receiver that can pivot around the crane. A UAV has a hook on one of its wings that can latch onto the arrestment receiver during flight. After latching onto the arrestment receiver, the UAV pivots around the end of the crane until the UAV comes to rest. The UAV and the arrestment receiver each include optical alignment systems that facilitate the connection between the hook and the arrestment receiver.

Abstract: A barrier assembly for use with a downhole pump includes a first tubular adapter; a second tubular adapter; a braided sleeve disposed between the first tubular adapter and the second tubular adapter, wherein the sleeve is configured to block passage of a particulate.

Abstract: An unmanned aerial vehicle including a controller operating in a search mode of operation where a receiver of an acquisition sensor searches for a target and causes flight control surfaces to guide the vehicle in a downward spiral path, a terminal mode of operation where the acquisition sensor detects a target and causes flight control surfaces to direct the vehicle toward the target, and an activation mode of operation where a trigger sensor detects a target within a predetermined distance to the vehicle and the controller activates a responder.

Abstract: An unmanned aerial vehicle including a controller operating in a search mode of operation where a receiver of an acquisition sensor searches for a target and causes flight control surfaces to guide the vehicle in a downward spiral path, a terminal mode of operation where the acquisition sensor detects a target and causes flight control surfaces to direct the vehicle toward the target, and an activation mode of operation where a trigger sensor detects a target within a predetermined distance to the vehicle and the controller activates a responder.

Abstract: An unmanned aerial vehicle including a controller operating in a search mode of operation where a receiver of an acquisition sensor searches for a target and causes flight control surfaces to guide the vehicle in a downward spiral path, a terminal mode of operation where the acquisition sensor detects a target and causes flight control surfaces to direct the vehicle toward the target, and an activation mode of operation where a trigger sensor detects a target within a predetermined distance to the vehicle and the controller activates a responder.

Abstract: An unmanned aerial vehicle including a controller operating in a search mode of operation where a receiver of an acquisition sensor searches for a target and causes flight control surfaces to guide the vehicle in a downward spiral path, a terminal mode of operation where the acquisition sensor detects a target and causes flight control surfaces to direct the vehicle toward the target, and an activation mode of operation where a trigger sensor detects a target within a predetermined distance to the vehicle and the controller activates a responder.

Abstract: An unmanned aerial vehicle including a controller operating in a search mode of operation where a receiver of an acquisition sensor searches for a target and causes flight control surfaces to guide the vehicle in a downward spiral path, a terminal mode of operation where the acquisition sensor detects a target and causes flight control surfaces to direct the vehicle toward the target, and an activation mode of operation where a trigger sensor detects a target within a predetermined distance to the vehicle and the controller activates a responder.

Abstract: An extractor for stuck drill bits. The extractor has an elongated main body with a bore at one end, the bore sized and shaped to fit over the shank of a drill bit. The drill bit shank has a cross section shape with a non-circular feature, such as a slot, a square, triangle, etc. The bore has a cooperative shape, and when engaged on the shank of the drill bit permits transfer of torque between the extractor and the drill bit. The extractor has a torque engaging surface, such as a hexagonal surface, on which a torque device such as a wrench can be engaged, and reverse torque thereby applied to extract a stuck drill bit.