Abstract: An air distribution unit comprising a housing and louvered inlet and outlet grilles. The housing forms an interior space, an inlet for conducting air into that interior, and an outlet for discharging air from the air distribution unit; and the inlet and outlet grilles are located in the inlet and outlet of the housing, respectively. These grilles have identical shapes and identical sizes and each grille includes a multitude of parallel louvers that are held in fixed positions in the grille. Moreover, the inlet grille has first and second positions to help direct air into the interior of the housing at first and second inlet angles respectively, and the outlet grille has first and second positions for directing air from the interior of the housing at first and second outlet angles respectively.

Abstract: An air outlet for a motor vehicle air conditioning system has end vanes that may be pivoted in parallel with a central group of vanes or positioned at opposite angles to each other and transverse to the central group by operation of a lever, a rotary-to-linear actuator mounted on the lever and a wire form spring.

Abstract: An airflow control system (10) in accordance with the invention includes an air channel (14) having a single opening (16) for receiving ram air and for inducting air into the channel; a fan assembly (20) disposed within the air channel including a fan which is activated for inducting air through the air channel and through a fan channel (30) disposed within the air channel, the fan having an inlet (42) in the fan channel and an outlet (44); and a mechanism (50) responsive to ram air within the air channel for closing the outlet to at least lessen freewheeling of the fan which would occur if the fan channel was open for passage of ram air and responsive to induction of air by the fan into the channel to cause the inlet and the outlet to be open.

Abstract: A variable air flow orifice for variable air control structures including an adjustable flap panel formed over one opening in a wall or door of the negative air structure. The adjustable flap is formed in the panel and secured thereto by a zipper including one or a pair of zipper pulls. The opening also can be covered by a screen.

Abstract: A portable air blower includes a flexibly resilient housing, a motor mounted within the housing, and a blower wheel fixed to a motor shaft. The motor is bolted at one end to a motor mounting bracket which, in turn, is attached to the housing by a plurality of first shock mounts. Each such first shock mount includes a bolt for connecting the motor mounting bracket with the housing, and a resilient elastomeric grommet interposed between the bolt and the bracket. A self-clinching nut fixes the bolt to the housing. The motor shaft rotates through a self-aligning bearing held by a pyramid-like support bracket which is attached to the housing by a plurality of second shock mounts. The second shock mounts are identical to the first shock mounts, and include a resilient elastomeric grommet interposed between the support bracket and the bolt.

Abstract: In an automotive heater or air conditioner system the temperature control and the mode control for directing air flow to the desired outlet is controlled by a single actuator. A mixing chamber has inlet and outlet end walls for temperature control and mode control, respectively. Each wall has openings for air flow and has an associated rotary door for controlling air flow through the openings. The rotary doors are mounted on a common shaft for simultaneous rotation and the shaft is driven by a single actuator. A heater core is mounted in the chamber adjacent an opening in the inlet end wall. A mixer device blends hot and cold air in the chamber.

Abstract: For an outdoor display of items for sale and for protecting such items against environmental elements such as dust, dirt, moisture, sunlight and temperature variations and the like, a lightweight box-like structure is formed of radiation reflecting material and is provided with venting apertures and includes manually movable transparent closure means formed in at least one side wall of the enclosing structure for affording ready visibility and access to items disposed within the enclosure.