Warm air register filter and scent dispenser

Claim 2

A filter unit for forced air duct outlet in ventilation systems, comprising: a) a substantially planar frame means for placing within an air duct outlet; b) filter means including an opening for removably receiving said frame means, said filter means comprises first and second substantially planar plies of fibrous sheet material connected to each other only at the side end portions thereof so as to form a sleeve open at both ends thereof to form said opening; c) container means for receiving scent-carrying means, said container means being positioned substantially parallel to the plane of said frame means; d) said frame means including rib means for supporting said container means, said rib means including at least one rib member extending generally transversely to said frame means; and e) said container means including aperture means for directing passage of air from a forced air source through said container means.

Claim 3

The filter unit defined in claim 1, wherein: a) said rib means includes a pair of rib members extending generally transversely to said frame means.

Claim 4

The filter unit defined in claim 1, wherein: a) said rib means is located substantially equidistantly from the opposite end portions of said frame means.

Claim 5

The filter unit defined in claim 1, wherein: a) said container means includes a pivotable cover means for gaining access thereto.

Claim 6

The filter unit defined in claim 1, wherein: a) said container means includes adjusting means for controlling the flow of air through said container means.

Claim 7

The filter unit defined in claim 1, wherein: a) said aperture means comprises a plurality of generally elongated slots on one side of said container means.

Claim 8

A filter unit for a forced air duct outlet in heating and/or cooling systems, comprising: a) resilient substantially planar frame means; b) disposable filter means having two substantially planar plies of fibrous sheet material of a shape similar to and a size slightly larger than said frame means; c) a substantial portion of the margin of said plies being connected together to form sleeve means having a marginal opening of an extent sufficient for passage of said frame means into said sleeve means; d) said frame means having a size and shape in conformity with the internal wall of a duct outlet such that said frame means, upon insertion into and disposition transversely of the duct outlet, will press the filter means margin into substantially continuous engagement with said duct outlet internal wall; e) said frame means including transverse rib means located substantially equidistantly from opposite end portions of said frame means for strengthening said frame means and forming grasp means for flexing said frame means during insertion of the filter unit into a forced air duct outlet; and f) container means carried by the rib means for receiving volatile scent-carrying means, said container means having a pair of spaced substantially parallel walls disposed substantially parallel to the plane of the frame means, and aperture means through each of said walls, said aperture means are substantially perpendicular to the plane of said frame for directing passage of air from a forced air duct through said container means and said scent-carrying means.

Claim 9

A filter unit for a forced air duct outlet in heating and/or cooling systems, comprising: a) resilient substantially planar frame means; b) disposable filter means having two substantially planar plies of fibrous sheet material of a shape similar to and a size slightly larger than said frame means; c) a substantial portion of the margin of said plies being connected together to form sleeve means having a marginal opening of an extent sufficient for passage of said frame means into said sleeve means; d) said frame means having a size and shape in conformity with the internal wall of a duct outlet such that said frame means, upon insertion into and disposition transversely of the duct outlet, will press the filter means margin into substantially continuous engagement with said duct outlet internal wall; e) said frame means including transverse rib means located substantially equidistantly from opposite end portions of said frame means for strengthening said frame means and forming grasp means for flexing said frame means during insertion of the filter unit into a forced air duct outlet; and f) container means carried by the rib means for receiving volatile scent-carrying means, said container means having a pair of spaced substantially parallel walls disposed substantially parallel to the plane of the frame means, and aperture means through each of said walls, said aperture means are substantially perpendicular to the plane of said frame for directing passage of air from a forced air duct through said container means and said scent-carrying means.

Claim 10

The filter unit defined in claim 7, in which the container means includes slidable cover means adjacent to one of the container means apertured walls and track means for guiding said cover means between selected positions whereby the apertures in said wall are fully closed, partially closed, or substantially fully opened for controlling the flow of air from a duct through the container means and scent-carrying means therein.

Claim 11

The filter unit defined in claim 7, in which the scent-carrying means are scented pellets.

Claim 12

The filter unit defined in claim 7, in which the frame means comprises molded polypropylene.

Claim 13

The filter unit defined in claim 7, in which the filter means comprises nonwoven polyester fiber sheet material.

Claim 14

The filter unit defined in claim 7, in which the filter means includes activated carbon.