Abstract: The apparatus is a gas filled ultraviolet generating lamp for use as a liquid purifier. The lamp is powred by high voltage AC, but has no metallic electrodes within or in contact with the gas enclosure which is constructed as two concentric quartz cylinders sealed together at their ends with the gas fill between the cylinders. Cooling liquid is pumped through the volume inside the inner quartz cylinder where an electrically conductive pipe spaced from the inner cylinder is used to supply the cooling liquid and act as the high voltage electrode. The gas enclosure is enclosed within but spaced from a metal housing which is connected to operate as the ground electrode of the circuit and through which the treated fluid flows. Thus, the electrical circuit is from the central pipe, and through the cooling liquid, the gas enclosure, the treated liquid on the outside of the outer quartz cylinder, and to the housing.

Abstract: Disclosed is an air hose holding device, particularly useful to people using air hoses while working on roof tops. During use, the base of the device is fixed to a mounting surface, such as a roof, with as few as two nails. The hose is then passed through an aperture in the device. An adjustable slip latch mounted above the aperture has a half-circle cut into it. By moving and fixing the adjustable slip latch closer to or farther away from the aperture, the adjustable slip latch covers more or less of the aperture, and the half-circle completes the circular shape of the aperture to make the aperture smaller or larger. Thus, different size hoses may be held in place with the single device. The device need only be mounted once for an entire job, since the hose may be pulled through and held at different lengths within the aperture of the device, by simply adjusting the slip latch.

Abstract: The apparatus is a gas filled ultraviolet generating lamp for use as a liquid purifier. The lamp is powered by high voltage AC, but has no metallic electrodes within or in contact with the gas enclosure which is constructed as two concentric quartz cylinders sealed together at their ends with the gas fill between the cylinders. Cooling liquid is pumped through the volume inside the inner quartz cylinder where an electrically conductive pipe spaced from the inner cylinder is used to supply the cooling liquid and act as the high voltage electrode. The gas enclosure is enclosed within but spaced from a metal housing which is connected to operate as the ground electrode of the circuit and through which the treated fluid flows. Thus, the electrical circuit is from the central pipe, and through the cooling liquid, the gas enclosure, the treated liquid on the outside of the outer quartz cylinder, and to the housing.

Abstract: An apparatus and a method for killing bacteria within an opaque liquid. The opaque liquid is moved along a high power ultraviolet radiation surface at a velocity which causes turbulent flow in the liquid. The turbulent flow mixes the opaque liquid so that all the liquid is exposed to the radiation even though the radiation does not penetrate the liquid to any significant depth. One embodiment of the invention moves the liquid in a serpentine path between multiple planar lamps which radiate UV from both planar surfaces.

Abstract: In a particle measuring system, a burette is provided to enable the rate of flow to a particle sensor of the particle measuring system to be continuously monitored and controlled. The burette has a central chamber and an outer chamber from which the central chamber can overflow. The central chamber of the burette is connected with the flow sample and the rate of flow through the particle sensor is measured by measuring the rate of displacement of the surface of the liquid sample in the central chamber. The rate of sonic transmission through the sample is measured by reflecting pulses from the surface of the sample at the time the central chamber overflows.

Abstract: In a particle detecting instrument, a sapphire detecting cell is provided with a square flow path. The sapphire cell is assembled from four sapphire pieces which extend throughout the length of the cell. The cell has a central section containing the square flow path with planar exterior walls and cylindrical end sections. The pieces are separated by black gaskets which are sandwiched between the opposed faces of the pieces. The pieces are clamped together by shape memory alloy rings which engage the cell in the cylindrical end sections. Each sapphire piece has a polished planar interior surface defining one of the walls of the square flow path.