Abstract: An air conditioner device having a housing or duct with an opening for exit of air and one or more rotatable flaps for adjusting air flow rate and angle exiting through the opening. An ionizer having an electrode is configured to ionize air exiting through the opening, and a cleaning pad is adapted to frictionally remove debris from the electrode consequent to rotation of the flaps without requiring manual operation by a user.

Abstract: A device for collecting particles that have a high electron affinity, particularly explosive particles, from a gas, includes a flow channel (12a) in which at least one electrically positive collector electrode (20a) and at least one ionising electrode (18a) are arranged, between which an electrical field is present so that the particles having high electron affinity can be indirectly charged by corona discharge on the ionising electrode (18a) and can be displaced towards the collector electrode (20a).

Abstract: Porous polymeric membranes formed from a hydrophobic polymer, such as halar having membrane pores of a size sufficient to permit gas and/or vapor permeation 0.05 ?m to 5 ?m without permitting the flow of a hydrophilic fluid across the membrane. Pore distribution is uniform and porosity is high, in some cases up to 80%. Membranes may be in the form of a flay sheet or hollow fibre for example and can be used in a variety of applications such as stripping HF gas, degassing of caustic solution, chlorine gas/alkaline filtration, degassing tap water to remove dissolved chlorine. Processes used to make such membranes can be carried out using relatively non toxic solvents such as citric acid ethyl ester or glycerol triacetate.

Abstract: A window screen apparatus employing electrostatic principles to purify air. The window screen mesh wires encompass electrically-conductive filaments that are charged by a high-voltage DC pulse generator. Between and surrounding the wires an electric field is created that charges, traps, and repels airborne particulate. An alternative embodiment consists of a window screen in which the screen mesh wires are manufactured from permanently electrostatically charged fibers.

Abstract: Filter plates in an electro-filter are cleaned using nozzles which, during spraying, are displaced longitudinally with the side edges of the filter plates while at the same time being rotated. The nozzles are mounted in a plane slightly different from the plane of the filter plates to enable the spray jets to reach the furthermost areas of the plates when the nozzles are at the greatest angle of incidence during washing.

Abstract: High resolution microimages of continuous tone photographs must be prepared in halftone form to enable inexpensive duplication of the microimages by conventional graphic arts processes. The halftone pattern in such microimages must have a spatial frequency of not less than about 40 line pairs per millimeter in order to enable the projection of an acceptably detailed enlarged image. In the present invention, such halftone microimages are prepared using an ultra-high resolution gradient density screen having therein an image of an interference fringe field resulting from an exposure of a preform of the screen to two interferring mutually coherent beams of radiation.

Abstract: A stereo relief modelling apparatus based on photogrammetric method and apparatus comprising a flexible platen, used with standard stereo plotting instrumentation such as double-projection direct-viewing plotting instruments. The purpose of the flexible platen is to provide an absolute stereo image for photographic, modelling and other purposes. The flexible platen, which is of sufficient size to provide a meaningful mapping surface, is vertically adjustable at a multiplicity of points by mechanical, pneumatic, electro-mechanical, fully automated, or other means to provide an actual model-like three-dimensional photographic or modelling surface to enable relief distortion from aerial photographs to be effectively eliminated in planimetric photographs which are taken of the adjusted flexible platen, or models molded on the adjusted flexible platen, upon which the aerial images are projected. Modelling is facilitated by situating the platen inside a sealable vacuum box from which the air is removable.

Abstract: Infrared (IR) holograms are fabricated from holograms recorded with visible light in photographic silver halide emulsions. The process facilitates image reconstruction at longer IR wavelength than presently considered possible with conventional IR holographic materials.

Abstract: A process for reducing the size of halftone dot images obtained by exposing and developing a metal image-forming material comprising a support, a thin metallic layer composed mainly of aluminum on the support and a photosensitive resin (or photoresist) layer on the thin metallic layer uniformly by first applying a solution capable of swelling the photosensitive resin layer to those parts which are to be subjected to dot size reduction, and then applying a reducer solution to the parts so treated.

Abstract: A microfiche having pinholes instead of lenses. The pinholes and thickness of the fiche are of such dimensions that the device functions as in the manner of a pinhole camera.

Abstract: A method of producing a distorted artwork image printed on flat stock material which when deep drawn to the desired shape stretches the distorted artwork image to provide the desired artwork image on the finished article in which the original artwork can be an original picture or photograph on opaque material. The original artwork is formed into a closed cylinder with the artwork on the inner walls and photographed as reflected from the cylinder by a generally conically shaped mirror arranged co-axially with the cylinder so that a distorted artwork image can be produced which will extend over the whole area of the flat stock material to be subsequently deep drawn.