Abstract: A vent register includes a front plate having a perforated section for allowing airflow through the front plate, and a plurality of sidewalls perpendicularly extending from a side of the front plate and forming a sleeve for insertion into an opening of a ventilation duct. A first bow-spring is attached to a first sidewall of the plurality of sidewalls and a second bow-spring is attached to a second sidewall, the second sidewall being opposite the first sidewall. The first and second bow-springs are each respectively spring-tempered wires, the first bow-spring being attached at both ends to the first sidewall and the second bow-spring being attached at both ends to the second sidewall. Each of the first and second bow-springs forms a U-shape wing respectively extending from the and second sidewalls. The bow-springs include friction increasing means on at least a center portion for securing the register vent in the opening.

Abstract: An indoor unit of an air-conditioning apparatus according to the present invention includes a casing having an air inlet provided at a top face, an air outlet provided at a lower portion, and an airflow passage through which the air inlet and the air outlet communicate with each other; a fan disposed in the casing; a heat exchanger disposed upstream of the fan in the casing; a first filter disposed upstream of the heat exchanger in the casing; a front panel attached at a front portion of the casing; a protrusion provided on a back face of the front panel; and a second filter disposed behind the front panel and between the protrusion and the heat exchanger, the second filter being separate from the first filter.

Abstract: A dry wall extrusion grille comprising a frame, a linear bar grille, indented slots, and a flexible mounting flange.

Abstract: A dry wall extrusion grille comprising a frame, a liner bar grille, sheet rock screws, pre-perforated through holes, indented slots, and a flexible edge.

Abstract: Provided is air return grille assembly that is to be positioned over the open end of an air return duct. The air return grille assembly comprises a concealing arrangement joined to an air return grille such that it is spaced apart from the rear face of the air return grille. The concealing arrangement obstructs from view, through air flow openings in the air return grille, an air return duct when the air return grille is positioned over the open end of said duct.

Abstract: The Flush Mount or Drop In Wood And/Or Wood Composite Vent is a floor register vent that is supported by an attached rigid plate, preferably metal, with matching vent slots to allow for manufacturing vents in materials including but not limited to prefinished flooring materials with the grain running the same way lengthwise and allows use of thin materials.

Abstract: The invention provides the combination of a grille and a connector frame for a duct outlet in a HVAC system. At least one lock element extends from one of the connector frame and the grille and releaseably engages the other of the connector frame and grille in a releasable connection to hold the grille to the connector frame. The lock element may be manipulated from the exterior of the grille to release the grille from the connector frame without the use of tools.

Abstract: A complete plastic HVAC system assembled using individual plastic components for ensuring the efficient and quiet distribution of air from a central air unit to multiple distribution points and preventing heating and cooling losses, the need for installers to stock multiple sized and shaped components, the accumulation of dust, dirt and pollens during storing, installing and use on the surfaces of the individual components. The fittings have a collar sizable to fit both 6 and 7-inch pipe, whether flexible or rigid. The use of plastic fittings, duct and pipe removes the potential of injury commonly associated with conventional metal ductwork, while providing seamless components that can be configured for any type of installation and insure an air tight connection between adjoining surfaces. The individual fittings include a register boot, torpedo boot, straight boot, rigid and flexible pipe and couplers, straight and 90-degree takeoffs, a plastic duct and duct end cap.

Abstract: The present invention provides an air duct registrer for adding forced air (heat, air conditioning), exhausting air or simply to balance air quality. The air duct register has a manifold and is designed with a removable manifold collar connectible to the flexible or rigid duct. The manifold has thumb cam fasteners to provide ease of installation from below the finished ceiling. With the duct in place above the ceiling elevation, the appropriate opening can be cut and all connections can be made below ceiling elevations via the manifold collar opening. The duct is routed through the manifold opening and connected onto the manifold collar retainer barbs. The manifold collar plate can then be snapped securely into the manifold. The grille then slides into the manifold and is pushed tight to the finished ceiling.

Abstract: A forced air vent register that is adapted to house pieces of flooring identical to the surrounding flooring. The register is of sufficient structural strength to withstand distortion under considerable forces.

Abstract: A louvered air diffuser which mounts to an outlet of an air distribution system of a building and is removed therefrom without tools. The diffuser has two arms which expand resiliently to engage an environmental surface of the air conduit of the distribution system. The arms each have teeth for improving frictional engagement of the environmental surface. The arms and teeth are configured to assure that the arms are urged inwardly, away from frictional engagement of the environmental element, when being installed and removed. Optionally, the teeth have holes with sharp edges, or holes for receiving rubber projections for enhancing grip.

Abstract: An air flow register comprises a housing which is open at upper and lower ends and comprises a peripheral outwardly projecting flange at the upper end and a skirt portion which depends from the flange, the register further comprising a cowl which is pivotally mounted in the housing and which carries a plurality of spaced inclined air deflection vanes, the cowl being pivotable between a first position in which the cowl is raised to direct air from the register across a surface in which the register is located and a second position in which upper edges of the air deflector vanes extend substantially flush with the flange and in which the cowl abuts the housing skirt portion to close air flow through the cowl.

Abstract: An indoor unit of an air conditioning system includes front and rear cases joined together to form a space in which a heat exchanger, fan, and fan motor are housed. A grill member hingedly mounted on the front case has a front air intake opening formed therein. A top air intake opening is formed in an upper side of the rear case. A filter is mounted on a rear side of the grill member to extend across the front air intake opening. An upper portion of the filter underlies the top air intake opening. Edges of the front and rear case overlap one another, and one of those edges forms a slot in which the other edge is received. Boards for carrying electrical components are mounted in an out-of-way manner to minimize the space taken up.

Abstract: A grille (3) for use adjacent an outlet of a heating, ventilating or air conditioning system comprising a frame (15) and a plurality of blades (25) extending between opposed frame parts. Each blade (25) has a spindle (26) which is rotatably supported within opposed slots (21) formed in the opposed parts of the frame. The slots (21) are open at one end to permit the insertion of the blade spindle and the spindle is supported at the closed ends of the slots. The grille (3) further comprises means for retaining the blade spindles (26) in the slots (21). The retaining means comprise an element (30) mountable upon the frame (15) of the grille such that part of the retaining element (30) engages the blade spindles (26) when mounted upon the frame and prevents the spindles (26) from moving out of the open ends of the slots (21).

Abstract: A safe is provided for use with a wall having an air duct and an opening to the wall which connects the air duct with a room. The safe includes a housing having an interior dimensioned to fit within the air duct so that the housing is recessed in the wall and in alignment with the wall opening. A grille dimensioned to cover the wall opening is pivotally mounted to the housing so that the grille is movable between a closed position in which the grille overlies and covers the wall opening and an open position in which the opening interior is accessible from the room. A valuable container is mounted within the housing or, alternatively, on the rear side of the grille. Additionally, air passage holes are formed through the housing for enabling air flow through the housing, grille and air duct. Alternatively, the grille is magnetically attached to the housing.

Abstract: A modular forced-air register includes two main sub-assemblies. A housing with an opening can be disposed into a hole in the floor of a room. A second sub-assembly includes a louver plate with a grid work of tri-directional vanes. Air flow is controlled by a slide grille disposed beneath the grid work and carrying an integral filter substrate secured to the slide grille. The two sub-assemblies are detachably connected to each other by an arrangement of bosses and recesses as well as a projection mounted on a flexible tang configured and disposed to engage a pocket configured in a thin wall region of the opposing sub-assembly.

Abstract: Presented is a wall heater or furnace extension structure for mounting in the space between a conventional wall furnace or heater and the ceiling of the room in which the wall furnace or heater are installed. The wall material normally found in this area of the wall is removed to expose the flue connected to the fire-box of the furnace or heater. The furnace extension structure is mounted on the wall so as to enclose the flue, draw air from the room into the space surrounding the flue, and then discharge the heated air back into the room from which it emanated.

Abstract: A window fan which can be mounted in a window opening in either a double-hung window frame or a vertical slider window frame and which can be held securely in place without the use of additional hardware or mounting brackets. The window fan comprises a housing of generally rectangular shape, the housing including a front piece, a back piece, and a pair of side extensions. The side extensions have outer edges sized and shaped to fit within the left and right side railings of a double-hung window or the top and bottom railings of a vertical slider window. Each one of the side extensions includes a pair of outer guides and a plurality of panels telescopically mounted within the outer guides. The side extensions extend out from the sides of the housing at about the rear edge so as to permit installation in windows having outer screens.