US5087273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air freshening device
Assignee: Ward Products Inc
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Filing: 1990-11-05
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Granted: 1992-02-11
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Expires: 2010-11-05
Abstract
Abstract An air freshening device used in conjunction with an air circulation system of a business or residential building for impregnating the air with an aromatic scent. The device comprises a rectangular envelope made out of an air permeable synthetic mesh containing a plurality of aromatic beads. The envelope has a fastener at one corner. It is affixed to the internal conduit of the air circulation system, preferably to the main air filter for the system. As air passes through the air permeable envelope, the aromatic beads volatize, saturating the air with a fragrant scent. The air is then transferred throughout the building via the normal conduit or duct system.
Inventors
- 👤 Lacy D. Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:33
CPC Classifications
B; B01; B01D; B01D39/00; B01D46/00; B01D46/10; F; F24; F24F; F24F3/00; F24F3/12; Y; Y10; Y10S; Y10S261/00; Y10S261/88
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
101 words
For use in freshening air, the combination comprising an air circulation system; an air filter in the circulation system; an air freshening material comprising a plurality of scented particulate beads; an air permeable envelope enclosing the air freshening material and keeping the air freshening material inside of the envelope; and a fastener attached at one end to the air permeable envelope adapted for securing the envelope to the air filter and comprising an eyelet ring secured to the air permeable packet and a single point fastener threaded through the eyelet ring for attaching the air freshening device to the air filter.
Claim 2
Dependent Claim
101 words
For use in freshening air, the combination comprising an air circulation system; an air filter in the circulation system; an air freshening material comprising a plurality of scented particulate beads; an air permeable envelope enclosing the air freshening material and keeping the air freshening material inside of the envelope; and a fastener attached at one end to the air permeable envelope adapted for securing the envelope to the air filter and comprising an eyelet ring secured to the air permeable packet and a single point fastener threaded through the eyelet ring for attaching the air freshening device to the air filter.
Claim 3
Dependent Claim
17 words
The air freshening combination of claim 1 wherein the air freshening material comprises scented extruded plastic beads.
Claim 4
Dependent Claim
31 words
The air freshening combination of claim 1 wherein the air permeable envelope comprises opposite sides of multi-threaded mesh, sealed around the perimeter so as to keep the contents inside the envelope.
Claim 5
Dependent Claim
26 words
The air freshening combination of claim 3 wherein the mesh used in the envelope has greater than 60% open surface area to allow for air penetration.
Claim 6
Dependent Claim
25 words
The air freshening combination of claim 3 wherein the envelope is separated into a plurality of partitions, each containing a portion of air freshening material.
Claim 7
Dependent Claim
101 words
An air freshening device for use in air circulating systems comprising: an air freshening material comprising a plurality of scented extruded plastic particulate beads; an air permeable envelope enclosing the air freshening material wherein the air permeable envelope comprises opposite sides of multi-threaded mesh sealed around the perimeter so as to keep the contents inside the envelope, said envelope being separated into a plurality of partitions each containing a portion of said air freshening material; and a fastener, attached at one end to the air permeable envelope adapted for securing the envelope inside the conductive path of the air circulation system.
Claim 8
Dependent Claim
101 words
An air freshening device for use in air circulating systems comprising: an air freshening material comprising a plurality of scented extruded plastic particulate beads; an air permeable envelope enclosing the air freshening material wherein the air permeable envelope comprises opposite sides of multi-threaded mesh sealed around the perimeter so as to keep the contents inside the envelope, said envelope being separated into a plurality of partitions each containing a portion of said air freshening material; and a fastener, attached at one end to the air permeable envelope adapted for securing the envelope inside the conductive path of the air circulation system.
Claim 9
Dependent Claim
26 words
The air freshening device of claim 6 wherein the mesh used in the envelope has greater than 60% open surface area to allow for air penetration.
Claim 10
Dependent Claim
104 words
An air filter for use in a central air circulation system, in combination with an air freshening device comprising: an air freshening material comprising a plurality of scented particulate beads; an air permeable envelope, enclosing the air freshening material and keeping the air freshening material inside of the envelope, wherein the envelope comprises opposite sides of multi-threaded mesh, sealed around the perimeter and having greater than 60% open surface area to allow for air penetration; and a fastener, attached at one end to the air permeable envelope adapted for securing the envelope to the filter inside the conductive path of the air circulation system.
Claim 11
Dependent Claim
104 words
An air filter for use in a central air circulation system, in combination with an air freshening device comprising: an air freshening material comprising a plurality of scented particulate beads; an air permeable envelope, enclosing the air freshening material and keeping the air freshening material inside of the envelope, wherein the envelope comprises opposite sides of multi-threaded mesh, sealed around the perimeter and having greater than 60% open surface area to allow for air penetration; and a fastener, attached at one end to the air permeable envelope adapted for securing the envelope to the filter inside the conductive path of the air circulation system.
Claim 12
Dependent Claim
17 words
The air filter combination of claim 8 wherein the air freshening material comprises scented extruded plastic beads.
Claim 13
Dependent Claim
25 words
The air filter combination of claim 8 wherein the envelope is separated into a plurality of partitions, each containing a portion of air freshening material.
Claim 14
Dependent Claim
41 words
The air filter combination of claim 8 wherein the fastener comprises: an eyelet ring, secured to the air permeable packet; and a single point fastener, threaded through the eyelet ring, for attaching the air freshening device to an air circulation system.
Claim 15
Dependent Claim
113 words
An air freshening device for use in air circulation systems comprising: an air freshening material comprising a plurality of scented particulate beads; an air permeable envelope enclosing the air freshening material wherein the air permeable envelope comprises opposite sides of multi-threaded mesh sealed around the perimeter so as to keep the contents inside the envelope; and a fastener attached at one end to the air permeable envelope adapted for securing the envelope inside the conductive path of an air circulation system and comprising an eyelet ring secured to the air permeable packet and a single point fastener threaded through the eyelet ring for attaching the air freshening device to an air circulation system.
Claim 16
Dependent Claim
113 words
An air freshening device for use in air circulation systems comprising: an air freshening material comprising a plurality of scented particulate beads; an air permeable envelope enclosing the air freshening material wherein the air permeable envelope comprises opposite sides of multi-threaded mesh sealed around the perimeter so as to keep the contents inside the envelope; and a fastener attached at one end to the air permeable envelope adapted for securing the envelope inside the conductive path of an air circulation system and comprising an eyelet ring secured to the air permeable packet and a single point fastener threaded through the eyelet ring for attaching the air freshening device to an air circulation system.
References Cited (Backward Citations)
US1769409A
Cited
US2738224A
Cited
US3784102A
Cited
US3902877A
Cited
US4065262A
Cited
US4118226A
Cited
US4257787A
Cited
US4315837A
Cited
US4306892A
Cited
US4614299A
Cited
US4563333A
Cited
US4604114A
Cited
US4913942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-10 | 1995-08-12 | 1996-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-10 | 1999-08-12 | 2000-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-10 | 2003-08-12 | 2004-02-11 | $7700.00 | Window Closed / Lapsed |