Abstract: An absorption type chiller is improved as to operation and efficiency by the addition thereto of a pair of liquid-transfer units, one between the concentrated salt solution circuit and the intermediate salt solution circuit and including a magnetic filter and a pump additional to and independent of the system pumps. The purpose of this unit is to filter off iron oxide (rust) that accumulates periodically in the typical system. In addition to this unit, the heat exchanger in the concentrated solution line is vibrated in order to loosen and free the iron oxide particles. A second liquid-transfer unit is connected between the dilute solution line and the refrigerant line and includes an ammonia scavenger canister or its equivalent.

Abstract: A grille of a car stereo has a recess, an operation flap pivotally mounted in the recess, an opening for inserting a sound recording medium formed at a position behind the flap, and a liquid crystal display panel provided in the flap. The lighting device has a light source provided behind the grille and a light introducing plate, so that the liquid crystal display panel and the opening are lighted by light transmitted from the light source through the light introducing plate.

Abstract: A memorial comprising a three dimensional monument member having a configuration and first surface conforming to said configuration, an illuminating means, coupled to a first surface of said monument member, for illuminating said monument, said illuminating means including a plurality of light sources arranged on said first surface to substantially conform to said configuration. The memorial further includes power means, electrically coupled to said illumination means, for providing said electrical power, and control means, electrically coupled to said illumination means and said power means, for responsively coupling said electrical power to said illuminating means and wherein said plurality of light sources, when illuminated, radiate outward appearing as illuminating star-like light sources.

Abstract: A belt with an adjustable light housing and holder attached centrally to the belt front. A flashlight is inserted into the holder housing. The housing is vertically adjustable so that the light illuminates a variety of optional areas in front of the belt wearer.

Abstract: A high reliability cooling system for avionics provides a low-weight tertiary backup. A first source of cooling airflow (20) is directed through a first duct (28) to a first compartment (30, 32). A second source of cooling airflow (58) is directed through a second duct (68) to a second compartment (70, 74, 76, 78). A check valve (104) is located in the first duct (28) and permits airflow from said first source (20) to said first compartment (30, 32) and prevents a back-flow of air therethrough. An interconnecting duct (84) is provided between the first and second ducts (28, 68). The interconnecting duct (84) connects to the first duct (28) at a location between the check valve (104) and the first compartment (30). A shutoff valve (86) is located in the interconnecting duct (84) and is operable to open or close airflow therethrough. The invention provides three modes of operation. First, with the shutoff valve (86) closed, there are two separated avionic cooling systems.

Abstract: A warning light (100) is provided that includes a base member (4) having at least one electroluminescent panel (14) mounted thereon that is enclosed by an upper housing (2) secured to base member (4) and of which at least a portion comprises a lens member preferably in the form of at least one panel section (8) that includes fluorescent material operative to fluoresce upon exposure to light incident thereupon emitted by electroluminescent panel (14). Warning light (100) is preferably powered by a rechargeable battery (20) that is charged by at least one solar cell (28) mounted on upper housing (2) in a manner operative to enable solar energy to be incident thereupon.

Abstract: A luminaire including one or more fluorescent tubes and associated reflectors for use in backlighting a projection type liquid crystal display matrix. The reflectors have special arcuate shapes designed to forwardly project light to the display matrix and also to direct diffuse light outward from behind the fluorescent tubes so that all of the light generated by the tubes can be efficiently projected for use in illuminating the display matrix.

Abstract: A heat machine comprising a displacer reciprocating within a housing. The displacer incorporates first and second independent, co-axial, overlapping regenerators. A first working volume is formed between the displacer and the housing at a hot end of the heat machine. Second and third working volumes are formed between the displacer and the housing at a cold end of the heat machine. A partition separates the second and third working volumes. A gas flow path exists from the first working volume to the third working volume via the first regenerator, the second working volume, a gas path within the partition, and the second regenerator.

Abstract: A system for providing intermittent cooling for personnel wearing protective garments and working in a hot contaminated environment is described which comprises a large flow capacity air control plenum operatively connected to an air conditioner of prescribed capacity and to suitable filters and blower for supplying about 20 cfm per person of air at a pressure of about 11 inches of water, wherein at least 80% of the system throughput is recirculated in providing the desired flow.

Abstract: A beer keg cover constructed of wet or dry fabric and foam composite materials for scuba divers includes a top lid with an elastic edged opening to snap fit over the dispensing pipe of the keg, a circular zipper closure with a hinge attachment for the lid with a vertical slip opening closed by a zipper to open the cylindrical covering. The cover also includes openings aligned with the standard hand grips opening through the top vertical flange of the keg with sealing flaps to reduce heat transfer.

Abstract: This headlamp comprises a reflector and a discharge lamp comprising an inner envelope having a longitudinal axis coinciding with the optical axis of the reflector. The inner envelope includes a bulbous portion, a front leg extending along the optical axis from the bulbous portion toward the front of the headlamp, and a back leg extending along the optical axis from the bulbous portion toward the reflector. The discharge lamp further comprises a tubular shroud comprising a first hollow portion surrounding the front leg of the inner envelope, a second hollow portion surrounding the back leg of the inner envelope, and a bulbous portion between the two hollow portions. The front leg is provided with a large-diameter integral enlargement (referred to herein as a "large-diameter maria"), and the shroud is joined to the front leg by a maria seal located at the outer periphery of this maria.

Abstract: A refrigeration system servicing apparatus includes a digital controller, a vessel for storing and pressurizing refrigerant, a solenoid actuated valve responsive to the digital controller for selective connection of the refrigeration system to a vacuum source, a solenoid actuated valve responsive to the digital controller for connection of the vessel to the refrigeration system, a pressure sensor for providing pressure readings to the digital controller from the low pressure side of the vacuum source, a pressure sensor for providing pressure readings to the digital controller from the vessel and means for quantifying the refrigerant in the Vessel. Three operational modes provided for are: a "vacuum" mode, during which residue material in the refrigeration system is boiled away; a "charge oil" mode, during which lubricant is added to the refrigeration system; and a "charge refrigerant" mode, during which refrigerant is added to a refrigeration system.

Abstract: This invention relates to an apparatus for continuously providing low temperature refrigerated air for freezing and storage of food products, wherein process air is refrigerated by passing over an evaporator coil. Frost build-up on the evaporator coil is removed by periodically spraying the evaporator coil with a food-grade propylene glycol solution. Entrained liquid propylene glycol droplets are removed as the process air passes through a primary mist eliminator, composed of a series of corrugated plates, and an auxiliary mist eliminator, composed of a flat sheet of woven wire mesh incased between two flat sheets of diamond mesh. The use of demisters enables operation at high air face velocities, which in turn reduces equipment size and increases heat transfer coefficients, resulting in lower heat transfer surface area requirements.

Abstract: A ventilation system for a composite head lamp that utilizes a one-way valve arrangement for permitting ventilating air to flow into and out of the headlamp but prevents splash water from entering the interior of the headlamp.

Abstract: A simplified, low cost absorption heat pump includes a single pressure vessel having first and second insulated compartments in unrestricted fluid communication with one another and containing, hermetically sealed, a working medium. A heat transfer ar is used to maintain the compartments at differential temperatures, but equal pressures so that the absorption cycle proceeds in a two-stage, batch mode, namely boiling of the working medium in the first compartment and simultaneous condensing in the second compartment during the first stage and evaporating in the second compartment and simultaneous absorbing in the first compartment during the second stage. The heat transfer arrangement then utilizes the heat given off or taken in during the absorption cycle for heating/air conditioning in a conventional manner.

Abstract: A finger drying component for use with a finger print image processing apparatus is disclosed. The drying component removes moisture from the finger so that an unsmudged finger print can be imaged. A preferred embodiment involves the use of a forced air dryer to conduct a stream of air across the optical imaging surface.

Abstract: A structure of a diffusing lens for a light emitting diode (LED). The diffusing lens is mounted on, for example, part of the casing of a receiver included in a telephone. A relatively thick plate-like diffusing lens is press fitted in a slot formed in an end portion of the receiver. Implemented by a light transmitting member, the lens transmits light issuing from an LED in a direction perpendicular to the thicknesswise direction thereof while diffusing it in a predetermined direction. Two holes are formed through the lens in the thicknesswise direction, and each receives and retains an LED therein. Two leads extending out from each LED are drawn out from both ends of the associated hole of the lens and connected to a flexible printed circuit board.

Abstract: A multi-function headlamp, in particular for a motor vehicle, is arranged to improve the illumination of road signs and other external objects. It includes an occulting means for defining a cut-off line for a beam such as a dipped beam or fog penetrating beam, lamp means of the kind that emits both visible light and ultra violet radiation simultaneously, and a front closure glass of a material which is at least partially transparent to ultra violet radiation. The occulting means is also opaque to visible light radiation and at least partially transparent to ultra violet radiation, and the occulting means is mounted for displacement between an occulting position, in which it intercepts all visible radiation directed above the cut-off line, and a retracted position in which it has substantially no effect on the transmission of visible light radiation.

Abstract: In protective illuminated vests and jackets a light enhancement means improves visibility and protects the enclosed light emitting bulb or diode. The light enhancement means is comprised of a transparent casing for housing a preferably screwbase lamp. The casing includes a cavity tapped into one end thereof for housing the lampbase and lamp, and a plurality of vertically spaced, horizontally extending apertures tapped through the casing to reflect light. The lamp is preferably mounted above the tapped apertures, beams light downwardly, and reflects in each of the apertures, giving the illusion of additional lamps.

Abstract: The invention herein provides an air washer and method for economical operation whereby the dew point temperature of air in a conditioned space can be consistantly controlled year-round. The air washer includes a manifold whereby chilled water and recirculated ambient temperature water are mixed to provide an efficient and precise temperature blend for spraying the airstream passing through the air washer into the conditioned space.