Abstract: A continuously variable nozzle system includes a nozzle body (5) with an inlet and an outlet. A conduit is defined between the inlet and the outlet by a series connection of components which includes a flow meter (10). The flow meter (10) has a chamber (83) with internal helical splines (82) that are configured to interact with a spray liquid passing through the chamber (83) and create a cyclone-like effect. A sphere (52) is located inside the chamber (83) for free movement along a circular path (106). A sensor is located outside of the chamber (83) and configured to detect motion of the sphere (52) and generate an output (9) signal in response to detected motion.

Abstract: An aviation integrated optics and lighting unit for securing to a light receptacle of an aircraft. The aviation integrated optics and lighting unit comprises a housing, a light-emitting device, and an optical sensor. The light-emitting device is secured to the housing. The optical sensor is positioned in the housing and is configured to capture optical data.

Abstract: An aviation integrated optics and lighting unit for securing to a light receptacle of an aircraft. The aviation integrated optics and lighting unit comprises a housing, a light-emitting device, and an optical sensor. The light-emitting device is secured to the housing. The optical sensor is positioned in the housing and is configured to capture optical data.

Abstract: A continuously variable nozzle system includes a nozzle body (5) with an inlet and an outlet. A conduit is defined between the inlet and the outlet by a series connection of components which includes a flow meter (10). The flow meter (10) has a chamber (83) with internal helical splines (82) that are configured to interact with a spray liquid passing through the chamber (83) and create a cyclone-like effect. A sphere (52) is located inside the chamber (83) for free movement along a circular path (106). A sensor is located outside of the chamber (83) and configured to detect motion of the sphere (52) and generate an output (9) signal in response to detected motion.

Abstract: A treatment tank (1) for the secondary treatment of sewage, for providing the processes of aeration, nitrification and denitrification, in a single structure, for which a single, small horsepower, effluent pump (26) is the only moving part. In the treatment tank (1), the sewage is subjected to two separate biological treatments, in two separate chambers under different conditions. One biological treatment is carried out under anoxic conditions in a pipe coil (3). Anoxic conditions are ensured by keeping the pipe coil (3) full at all times; the pipe coil axis is vertical, and the pump forces the fluid flow upwardly through the coil. The second biological treatment is carried out under aerobic conditions in a trickle down filter (8). In a preferred embodiment, a welded pipe coil (3) used both to provide the anoxic conditions and to provide a tank containing the trickle down filter (8).