Air circulation diffuser system

Claim 2

A forced air circulation diffuser system in combination with a conventional ceiling grid structure, said forced air circulation diffuser system comprising an elongated, inverted sheet material channel having free longitudinally extending edges, longitudinally extending attachment means integral with said edges, said ceiling grid structure comprising plural separate spaced apart generally tee-shape elements, said attachment means being of generally inverted U-shape for receipt over the upper ends of two of said tee-shape elements for support thereby, the spacing between said two tee-shape elements being readily adjustable to suit the desired spacing between said longitudinally extending edges of said inverted sheet material channel, means defining an opening communicating with said channel for passage of air therefrom, and baffle means supported by only one of said tee-shape elements adjacent said opening for controlling the rate and direction of flow of air from said channel.

Claim 3

The combination of claim 1 wherein the spacing between said two tee-shape elements defines the opening communicating with said channel.

Claim 4

The combination of claim 1 wherein said upper ends of said tee-shape elements are slightly enlarged providing a generally bulbous shape, and said generally inverted U-shape attachment means have inwardly bent edges to retain said inverted sheet material channel in place on said tee-shape elements.

Claim 5

The combination of claim 1 wherein said channel comprises a plurality of channel portions of the desired length connected end-to-end on the supporting grid elements.

Claim 6

The combination of claim 1 wherein said sheet material is flexible for attachment by said attachment means to grid elements of different spacing therebetween.

Claim 7

The combination of claim 1 further comprising a layer of insulation material on the inner wall of said sheet material.

Claim 8

The combination of claim 1 wherein said baffle means is integral with one of said attachment means and extends from said attachment means at an angle into the opening communicating with said channel.

Claim 9

The combination of claim 1 wherein said attachment means are received over the upper ends of tee-shape elements spaced apart by one or more intervening tee-shape elements.

Claim 10

The combination of claim 1 wherein there are at least two intervening tee-shape elements which define said opening therebetween for flow of circulated air from said channel, said baffle means being separately supported by one of said intervening tee-shape elements and extending into the ceiling opening for controlling the rate and direction of flow of air from the diffuser.

Claim 11

The combination of claim 9 wherein said baffle means is separately supported by one of said intervening tee-shape elements and extending into the ceiling opening for controlling the rate and direction of flow of air from the diffuseR.

Claim 12

The combination of claim 1 wherein said generally inverted U-shape attachment means are on the outside of said inverted channel.

Claim 13

The combination of claim 11 further comprising a layer of insulation material on the inner wall of said sheet material, said insulation extending downwardly below one of said attachment means for engagement with a ceiling panel supported by said ceiling grid structure to assist in preventing air leakage.

Claim 14

A forced air circulation diffuser system in combination with a standard grid structure for a drop ceiling, said air circulation diffuser system comprising diffuser channel means defining at least in part an elongated plenum chamber, said channel means having longitudinally extending lower free edges defining a channel opening along the underside of said channel, longitudinally extending attachment means coextensive with and integral with said lower edges of said channel means attached to two separate spaced apart elements of the drop ceiling grid structure, the flow of air from said plenum chamber being through an elongated opening in the drop ceiling essentially coextensive with the channel opening, and baffle means also supported by said grid structure extending into the ceiling opening for controlling the rate and direction of flow of air from the diffuser, said baffle means being an integral extension of one of said longitudinally extending attachment means on one edge of said diffuser channel means the spacing between said two elements of the drop ceiling grid structure to which said lower edges of said attachment means are attached defining the elongated opening in the drop ceiling which may be varied by varying the spacing between said two elements.

Claim 15

A forced air circulation diffuser system in combination with a standard grid structure for a drop ceiling, said air circulation diffuser system comprising diffuser channel means defining at least in part an elongated plenum chamber, said channel means having longitudinally extending lower free edges defining a channel opening along the underside of said channel, longitudinally extending attachment means coextensive with and integral with said lower edges of said channel means attached to two separate spaced apart elements of the drop ceiling grid structure, the flow of air from said plenum chamber being through an elongated opening in the drop ceiling essentially coextensive with the channel opening, and baffle means also supported by said grid structure extending into the ceiling opening for controlling the rate and direction of flow of air from the diffuser, said baffle means being an integral extension of one of said longitudinally extending attachment means on one edge of said diffuser channel means the spacing between said two elements of the drop ceiling grid structure to which said lower edges of said attachment means are attached defining the elongated opening in the drop ceiling which may be varied by varying the spacing between said two elements.

Claim 16

The combination of claim 13 wherein said channel means is made of sheet metal having formed edges providing said longitudinally extending attachment means.

Claim 17

The combination of claim 14 wherein said formed edges of said sheet metal channel means are on the inside of said channel and of a generally inverted U-shape for insertion over the upper ends of said parallel elements of the ceiling grid structure.