Abstract: A method for retrofitting an aircraft air conditioning unit drainage system comprises the step of removing drain pipe from the unit housing. A hole from which the drain pipe extends is plugged. A first location within a unit housing is determined where during operation of the unit air pressure is lower than at a second location. A second location below the first location is also determined where pooling occurs. A first and a second conduit with first and second internal diameters are respectively located at the first and the second locations. The first conduit and the second conduit are connected to a third conduit which extends generally vertically and which has a third internal diameter that is generally equal to the first internal diameter. A fourth conduit with a fourth internal diameter that is less than the second internal diameter is connected to the third conduit below the second location.

Abstract: A method for retrofitting an aircraft air conditioning unit drainage system comprises the step of removing drain pipe from the unit housing. A hole from which the drain pipe extends is plugged. A first location within a unit housing is determined where during operation of the unit air pressure is lower than at a second location. A second location below the first location is also determined where pooling occurs. A first and a second conduit with first and second internal diameters are respectively located at the first and the second locations. The first conduit and the second conduit are connected to a third conduit which extends generally vertically and which has a third internal diameter that is generally equal to the first internal diameter. A fourth conduit with a fourth internal diameter that is less than the second internal diameter is connected to the third conduit below the second location.

Abstract: A system and method for removing condensate from an air conditioning unit is disclosed. A conduit includes an outlet portion that is connected to a chamber of a housing of the unit at a first location, and an inlet portion that is connected to the chamber at a second location where condensate accumulates. A gravitational separator portion which extends below the second location is connected to the outlet portion and the inlet portion. A draining portion having an orifice for allowing condensate to exit the conduit is connected to the gravitational separator portion below the second location. The first location is chosen such that during operation of the unit the pressure at the first location is less than the pressure at the second location.

Abstract: A system and method for removing condensate from an air conditioning unit is disclosed. The system comprises a conduit including an outlet portion that is connected to a chamber of a housing of the unit at a first location. The conduit includes an inlet portion that is connected to the chamber at a second location where condensate accumulates. A gravitational separator portion which extends below the second location is connected to the outlet portion and the inlet portion. A draining portion having an orifice for allowing condensate to exit the conduit is connected to the gravitational separator portion below the second location. The first location is chosen such that during operation of the unit the pressure at the first location is less than the pressure at the second location.

Abstract: A compact, wide angle light comprising a concave reflector, lens and light emitter. The lens is provided with a pluraltity of light spreaders while the reflector is comprised of a linear section, with side walls interconnected by a parabolic section, disposed between dish end sections.

Abstract: A compact, wide angle light comprising a concave reflector, lens and light emitter. The lens is provided with spacially displaced parallel light spreaders while the reflector is comprised of a linear section, with side walls interconnected by a parabolic section, disposed between parabolic dish end sections.

Abstract: A light (58, 120) having a first parabolic reflecting surface (62, 122) and a second parabolic reflecting surface (60, 122) joined to the first surface at an angle (62) greater than about 90 degrees. The reflecting surfaces have linear vertexes (130, 132) and focal points (66, 64, 126, 128) which extend along a line parallel to the vertexes. A single elongated gas discharge tube (74) is located substantially coincident with the focal points of the reflecting surfaces. Preferably, the light has third and fourth reflecting surfaces (78, 79, 140, 146) which are angled relative to the first and second reflecting surfaces, and an integral bracket (162) for supporting a different type of light.

Abstract: A warning light assembly suitable for vehicle roof mounting is built around an I-beam structural member and includes lens elements which engage and are readily positionable on the beam so as to span the flanges at both sides thereof. The light assembly may include lights having a wide angle radiation pattern which are comprised of intersecting linear parabolic reflector sections and flash tubes formed to follow the contour of the intersecting linear focal points, the tubes being supports with their axes coincident with the reflector focal points.

Abstract: A mounting foot assembly for attaching a warning light to the exterior of a vehicle, the warning light including a pair of spaced inwardly facing slots in the base thereof, includes a pair of locking cams which are sized to be received in the slots. The mounting foot assembly also includes means for translating the rotational motion of an adjustment screw about a first axis to rotational motion of the locking cams in opposite directions about a pair of parallel axes whereby the locking cams will be caused to mechanically engage the bottoms of the slots.

Abstract: A reflector for rotatable signal lights includes a pair of coaxial parabolic reflecting surfaces which are interrupted and joined back-to-back with the juncture forming an aperture which defines a plane through the common focal point of the two reflecting surfaces. A lamp is positioned within this aperture so that its filament is intersected by and perpendicular to the plane formed by the aperture. The doubled-ended reflector and associated lamp is used in conjunction with any conventional type of rotating of oscillating drive.