Air diffuser

Details Air diffuser Air diffuser

2002-03-05

2003-11-18

Joyce, Harold (Department: 3749)

Ventilation

Having inlet airway

Including specific air distributor

C454S301000

Reexamination Certificate

active

06648752

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to air distribution systems and more particularly to the improved air diffuser for an air distribution system such as an air conditioning and heating system.
2. Prior Art Statement
Various types of air diffusers have been used by the prior art in air distribution systems. Typically, an air diffuser transforms airflow from an airflow conduit into an airflow in an expanded space such as a room or the like. The air diffuser transforms the high-pressure, high airflow rate within the airflow conduit into low pressure, low flow rate airflow within the expanded space. The air diffuser was required to accomplish this distribution without excessive noise, and With the ability to vary the direction of airflow emanating from the air diffuser. In many cases, the air diffusers were required to have an aesthetically pleasing appearance.
Typically, the air diffusers of the prior art appeared in the form of a substantially square or rectangular grille. In some instances, the grille was variable to vary the direction of airflow emanating from the grille.
In recent years, a new type of air diffuser has been introduced into the air distribution field. This new type of air diffuser is commonly referred to as a linear air diffuser. The linear air diffuser appeared in the form of a narrow opening extending along a linear or curved line in a wall or a ceiling. In many cases, the linear air diffuser was preferred over the substantially square or rectangular grilles of the prior art due to the more aesthetic appearance of the linear air diffuser. The following United States Patents are representative of linear air diffusers of the recent prior art.
U.S. Pat. No. 2,727,272 to Hankin et al. discloses a curtain suspension device, a glider comprising an upright body portion of rectangular cross section merging at its upper end into a transverse cylindrical portion, by which the glider as a whole may be freely suspended, and merging at its lower end into an arcuate portion lying in the same plane as said body portion, said body portion also having a transversely projecting configuration in the shape of an inverted V which bridges the arcuate portion of the glider.
U.S. Pat. No. 2,992,743 to Wing discloses a support for display fixtures and the like, in combination, a hollow upright adapted to detachably receive an article to be supported, a horizontally disposed leveling frieze mountable on a wall, means on said upright and slidably engaging said frieze for suspending said upright in spaced relation to said wall for sliding movement therealong, said upright comprising a straight upper body having a lower part inclined downwards in a direction away from said wall, said inclined part terminating in a vertical leg, a foot adjustable vertically in said leg into ground engagement, and adjustable means carried by the body of said upright movable into engagement with the wall to hold said upright vertical.
U.S. Pat. No. 3,127,827 to Ericson discloses a ventilated ceiling construction comprising a plurality of ceiling panels arranged in side-by-side relation, and a plurality of rails supporting said panels; each rail including an elongated rib disposed in spaced relation with respect to the marginal portion of an adjacent panel, a flange extending transversely from said rib, said flange having an outer portion engaging and supporting the marginal portion of said adjacent panel and an inner portion spaced from said panel marginal portion and provided with a plurality of ventilating openings, and valve means carried by said rail and slidably mounted on said flange inner portion to effect opening and closing of said ventilating openings.
U.S. Pat. No. 3,202,077 to Lee discloses a sub-ceiling support grid work having inverted T bar elements, diffuser elements of air distribution duct assemblies and hangers for suspending said grid work at a certain level below the main ceiling of a room and in which said T bar elements and air distribution diffuser elements have oppositely directed horizontal flanges all lying at the same level for supporting sub-ceiling elements, an expansion channel for cooperation with said grid work elements comprising, in combination a pair of laterally spaced, vertically extending elongated side members an outwardly directed flange on the lower portion of each side member, an elongated bifurcated member having downwardly extending spaced arms and a top center web, means on said web for suspending said bifurcated member from the main ceiling and cooperating engageable means on said side members and the lower parts of said arms for supporting said side members.
U.S. Pat. No. 3,207,057 to Brown et al. discloses a grid for supporting a plurality of individual panel members in a plane including a plurality of structural beams disposed in intersecting relation to each other in a predetermined geometric configuration, each of said beams having a web portion defining a pair of spaced parallel marginal edges, a beam bead portion along one of said marginal edges and a flange portion extending laterally of said web along the other marginal edge, a plurality of panel supporting clips disposed at spaced intervals along each of said beams, said clips being of generally U-shape and adapted to be suspended over said beam bead portions, the legs of said clip terminating in outwardly projecting flanges adapted to engage the marginal edges of panels to be supported thereby adjacent said web portion and in spaced relation to said beam flange portion.
U.S. Pat. No. 3,276,348 to Kennedy discloses an air distributor having, in combination, first and second elongated walls disposed in laterally spaced side-by-side relation and cooperating to define a passage of elongated cross-section for the flow of air in one direction between said walls, first and second elongated deflecting flanges extending along the downstream edges of said first and second walls, respectively, and projecting across said passage in a common plane to define between their opposed edges an elongated outlet slot for said passage, a plurality of bars spaced apart longitudinally of said passage in a second plane spaced inwardly from and paralleling the plane of said flanges, each of said bars being secured at its opposite ends to said walls to join the latter rigidly together, an elongated deflector vane substantially narrower than said passage disposed in and extending longitudinally of the passage along corresponding sides of said bars with on side of said vane facing upstream, said vane being supported on said bars for back and forth edgewise movement relative to the bars between a first deflecting position in which one longitudinal edge of the vane is closely adjacent said first wall and the other edge is spaced from said second wall to define a slot-like opening in said passage aligned with said second flange, and a second deflecting position closely adjacent said second wall to define a slot-like opening in said passage aligned with said first flange whereby said vane and one of said deflecting flanges cooperated to deflect airflowing through said passage first laterally and along one of said walls and then out through said outlet slot along an inclined path, and means for holding said vane releasably in each elected position relative to said bars.
U.S. Pat. No. 3,302,550to Thomson discloses an air distributor having in combination, parallel walls laterally spaced apart and defining the sides of an elongated passage adapted for the flow of air through said passage, each of said parallel walls having an inwardly directed wall the inner edges of which are spaced apart to form a slot for the passage of air therethrough, an intermediate wall held in spaced relationship to said parallel walls and terminating above said inwardly directed walls, said intermediate wall forming a support for a pair of individually, vertically slidable vane members, and means for supporting said vane members in vertically adjusted positions, said vane members adapted to bear against said inwardly

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