Patent US3748438A successfully refreshed from Google Patents.
US3748438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vaporizer device
Assignee: COSWELL PROD INC US
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Filing: 1972-01-14
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Granted: 1973-07-24
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Expires: 1992-01-14
Abstract
Abstract An electrically heated vaporizer having a pair of prongs to be plugged into a wall socket for vaporizing a chemically treated diffusable tablet for deodorizing, disinfecting, perfuming or otherwise treating air of a room, is formed of a hollow housing suitably foraminous to enable air to flow through so that air currents induced by the heater pass about the tablet to effect diffusion action. The housing is separated into two compartments by a partition on one side of which is the electrical heater, and the other side provides a shelf for the tablet. The partition panel has a sizeable number of small perforations for air passage, and oppositely arranged upwardly and outwardly inclined wings predetermine the position of the tablet and also baffle the air to the outlet passages.
Inventors
- 👤 H Costello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:28
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/015; A61L9/02; A61L9/03; Y; Y10; Y10S; Y10S261/00; Y10S261/65; Y10S261/88; Y10S261/89
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
171 words
In a vaporizer device designed to be plugged into an electrical wall outlet having a hollow body structure separated to provide a lower chamber and an upper chamber, there being air inlet port means in the lower chamber and air outlet port means in the upper chamber, the port means in the upper chamber comprising a plurality of elongate closely spaced ports, and a back casing member having a resistance-type electrical heating element extending into the lower chamber, the improvement which comprises a partition or shelf panel for supporting a chemically treated tablet and fitting said hollow body structure for providing said chambers and having a plurality of closely spaced holes covering an area of the order of three fourths the area thereof, and wings or flaps on opposite sides of and forming a part of said shelf panel and inclining upwardly and outwardly and terminating respectively in close juxtaposition to the outermost air outlet ports for directing the air to same and also insuring the positioning of the tablet thereon.
Claim 2
Dependent Claim
171 words
In a vaporizer device designed to be plugged into an electrical wall outlet having a hollow body structure separated to provide a lower chamber and an upper chamber, there being air inlet port means in the lower chamber and air outlet port means in the upper chamber, the port means in the upper chamber comprising a plurality of elongate closely spaced ports, and a back casing member having a resistance-type electrical heating element extending into the lower chamber, the improvement which comprises a partition or shelf panel for supporting a chemically treated tablet and fitting said hollow body structure for providing said chambers and having a plurality of closely spaced holes covering an area of the order of three fourths the area thereof, and wings or flaps on opposite sides of and forming a part of said shelf panel and inclining upwardly and outwardly and terminating respectively in close juxtaposition to the outermost air outlet ports for directing the air to same and also insuring the positioning of the tablet thereon.
Claim 3
Dependent Claim
29 words
A vaporizer device as claimed in claim 1, in which the free end portions Of said wings project into the respective outlet ports to engage the outer edges thereof.
Claim 4
Dependent Claim
31 words
A vaporizer device as claimed in claim 1, comprising inwardly projecting nubbins on said back casing member adapted to overlie said panel for assisting in retaining same in position of use.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |