Patent US4197271A successfully refreshed from Google Patents.
US4197271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air freshener
Assignee: National City Bank
•
Filing: 1978-11-20
•
Granted: 1980-04-08
•
Expires: 1998-11-20
Abstract
Abstract An air freshener for use, for example, in an automotive vehicle in which an annular scented pad is disposed within a hollow housing formed of mating, shallow, pan-shaped tray sections. One of the tray sections includes an annular axial hub. The other tray section has a guide extending outward therefrom and engageable with the hub to releasably secure the tray sections together with the scented pad entrapped therein. A restraining ridge about the hub holds the pad in position. A double sided pressure sensitive adhesive is fastened to one of the tray sections and is used to secure the housing to a surface within the atomotive vehicle in immobile fashion.
Inventors
- 👤 Michael Fenstermaker
- 👤 James Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:04
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
142 words
A portable air freshener comprising a housing with a cavity formed between a pair of opposing concave trays both having mating circular annular rims, a first of said trays having an axial hub projecting into the concavity of a second of said trays, said hub having outer restraining means and an interior shoulder within said hub which is spirally inclined, an annular removable scented pad disposed concentrically about said hub in said cavity and maintained thereon by said restraining means, and said second of said trays having guide means interiorally disposed relative to said hub for centering said second tray relative to said first tray, said guide means having a resilient outwardly biased catch engaging said shoulder of said hub, whereby relative twisting of said first and second trays together carries said catch up said inclined shoulder, thereby drawing said trays together.
Claim 2
Dependent Claim
142 words
A portable air freshener comprising a housing with a cavity formed between a pair of opposing concave trays both having mating circular annular rims, a first of said trays having an axial hub projecting into the concavity of a second of said trays, said hub having outer restraining means and an interior shoulder within said hub which is spirally inclined, an annular removable scented pad disposed concentrically about said hub in said cavity and maintained thereon by said restraining means, and said second of said trays having guide means interiorally disposed relative to said hub for centering said second tray relative to said first tray, said guide means having a resilient outwardly biased catch engaging said shoulder of said hub, whereby relative twisting of said first and second trays together carries said catch up said inclined shoulder, thereby drawing said trays together.
Claim 3
Dependent Claim
32 words
An air freshener according to claim 1 further characterized in that said annular rims are shaped in mating sawtooth configurations with a plurality of spiral inclines each formed to cover an arc.
Claim 4
Dependent Claim
46 words
An air freshener according to claim 2 further characterized in that the edges of one of said mating rims has a channel formed therein and the other of said edges has a ridge defined therein which resides within said channel to hold said edges transversely immobile.
References Cited (Backward Citations)
GB524042A
Cited
US2797844A
Cited
US2765194A
Cited
US3595607A
Cited
US3836077A
Cited
US3754707A
Cited
US3844478A
Cited
US3784102A
Cited
US3804330A
Cited
US3902877A
Cited
US3976246A
Cited
GB1514712A
Cited
US4014501A
Cited
GB1497580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-08 | 1983-10-08 | 1984-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-08 | 1987-10-08 | 1988-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-08 | 1991-10-08 | 1992-04-08 | $7700.00 | Window Closed / Lapsed |