US4676954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air freshener
Assignee: Individual
•
Filing: 1986-05-12
•
Granted: 1987-06-30
•
Expires: 2006-05-12
Abstract
Abstract A forced air furnace air freshener attached to a cold air return duct thereof. A pair of vertically spaced openings are provided in a wall of the duct. A basket has its lid mounted on the outside of such wall, which lid carries a scent block. The hinged main portion of the gasket is normally closed so that air flowing through the cold air duct is by-passed through said openings and is scented by said scent block.
Inventors
- 👤 James L. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:06
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/12; Y; Y10; Y10S; Y10S261/00; Y10S261/88
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
146 words
In combination with a cold air return duct of a forced air furnace, having a pair of vertically spaced openings in one wall thereof, a basket having a lid, said lid being mounted on the outside of said duct, said lid having holes in registry with said openings and which lid carries a scent block, a gasket between said lid and said outside of said duct, said basket being hinged to said lid and, when in the closed position of the basket, being adapted to completely enclose said scent block during normal operation of said air furnace, and deflector fins mounted on the inside wall of said duct immediately adjacent to said vertically spaced openings to deflect cold air return into said basket so as to enable cold air in said duct to be by-passed externally of the cold air return and through said scented block.
Claim 2
Dependent Claim
146 words
In combination with a cold air return duct of a forced air furnace, having a pair of vertically spaced openings in one wall thereof, a basket having a lid, said lid being mounted on the outside of said duct, said lid having holes in registry with said openings and which lid carries a scent block, a gasket between said lid and said outside of said duct, said basket being hinged to said lid and, when in the closed position of the basket, being adapted to completely enclose said scent block during normal operation of said air furnace, and deflector fins mounted on the inside wall of said duct immediately adjacent to said vertically spaced openings to deflect cold air return into said basket so as to enable cold air in said duct to be by-passed externally of the cold air return and through said scented block.
Claim 3
Dependent Claim
29 words
The combination recited in claim 1 wherein said scent block is supported in a foraminous container suspended on said lid for use elsewhere when the scent is partially depleted.
References Cited (Backward Citations)
US3136829A
Cited
US3209744A
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US3366775A
Cited
US3355155A
Cited
US3491746A
Cited
US3930797A
Cited
US4067692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-29 | 1990-12-29 | 1991-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-29 | 1994-12-29 | 1995-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-29 | 1998-12-29 | 1999-06-30 | $7700.00 | Window Closed / Lapsed |