Patent US3176447A successfully refreshed from Google Patents.
US3176447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air purifier
Assignee: General Electric Co
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Filing: 1961-06-07
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Granted: 1965-04-06
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Expires: 1981-06-07
Abstract
No abstract record available.
Inventors
- 👤 William A Omohundro
- 👤 Kranz Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:41
CPC Classifications
F; F24; F24F; F24F8/00; F24F8/10; F24F8/192; B; B01; B01D; B01D46/00; B01D46/10; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y10; Y10S; Y10S55/00; Y10S55/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
208 words
AN AIR PURIFIER COMPRISING A VERTICALLY SHALLOW CASING HAVING UPSTANDING FRONT AND REAR WALLS AND GENERALLY HORIZONTAL BOTTOM AND TOP WALLS, SAID BOTTOM WALL BEING SUBSTANTIALLY OPEN TO DEFINE AN ENLARGED AIR INLET, AN AIR DISCHARGE OPENING FORMED IN THE TOP PORTION OF SAID FRONT WALL, AN ELONGATED ULTRA-VIOLET LAMP LOCATED IN THE UPPER REAR PORTION OF SAID CASING AND EXTENDING GENERALLY PARALLEL TO SAID REAR WALL, AN ELONGATED ELECTRON EMITTING PLATE ARRANGED GENERALLY PARALLEL TO SAID ULTRA-VIOLET LAMP BETWEEN SAID LAMP AND SAID REAR WALL, BAFFLE MEANS POSITIONED IN THE UPPER PORTION OF SAID CASING BETWEEN SAID AIR DISCHARGE OPENING AND SAID LAMP, A COARSE FILTER POSITIONED ACROSS SAID AIR INLET HAVING OPENINGS WHICH VARY IN SIZE FROM APPROXIMATELY .010 INCH TO .040 INCH, A SUPERFINE FILTER ARRANGED GENERALLY PARALLEL TO SAID FIRST FILTER AND FORMED OF FIBERS HAVING A MEANS DIAMETER OF APPROXIMATELY ONE MICRON, A LAYER OF MATERIAL ARRANGED GENERALLY PARALLEL TO SAID FILTERS AND SPACED DOWNSTREAM THEREFROM TO DEODORIZE THE AIR WHICH PASSES THROUGH THE FILTERS, AND A FAN POSITIONED IN THE TOP PORTION OF SAID CASING BETWEEN SAID LAMP AND SAID BAFFLE WALLS FOR DRAWING AIR THROUGH SAID FILTERS, BETWEEN SAID PLATE AND SAID LAMP, ALONG SAID BAFFLE AND THROUGH THE DISCHARGE OPENING.
Claim 2
Dependent Claim
208 words
AN AIR PURIFIER COMPRISING A VERTICALLY SHALLOW CASING HAVING UPSTANDING FRONT AND REAR WALLS AND GENERALLY HORIZONTAL BOTTOM AND TOP WALLS, SAID BOTTOM WALL BEING SUBSTANTIALLY OPEN TO DEFINE AN ENLARGED AIR INLET, AN AIR DISCHARGE OPENING FORMED IN THE TOP PORTION OF SAID FRONT WALL, AN ELONGATED ULTRA-VIOLET LAMP LOCATED IN THE UPPER REAR PORTION OF SAID CASING AND EXTENDING GENERALLY PARALLEL TO SAID REAR WALL, AN ELONGATED ELECTRON EMITTING PLATE ARRANGED GENERALLY PARALLEL TO SAID ULTRA-VIOLET LAMP BETWEEN SAID LAMP AND SAID REAR WALL, BAFFLE MEANS POSITIONED IN THE UPPER PORTION OF SAID CASING BETWEEN SAID AIR DISCHARGE OPENING AND SAID LAMP, A COARSE FILTER POSITIONED ACROSS SAID AIR INLET HAVING OPENINGS WHICH VARY IN SIZE FROM APPROXIMATELY .010 INCH TO .040 INCH, A SUPERFINE FILTER ARRANGED GENERALLY PARALLEL TO SAID FIRST FILTER AND FORMED OF FIBERS HAVING A MEANS DIAMETER OF APPROXIMATELY ONE MICRON, A LAYER OF MATERIAL ARRANGED GENERALLY PARALLEL TO SAID FILTERS AND SPACED DOWNSTREAM THEREFROM TO DEODORIZE THE AIR WHICH PASSES THROUGH THE FILTERS, AND A FAN POSITIONED IN THE TOP PORTION OF SAID CASING BETWEEN SAID LAMP AND SAID BAFFLE WALLS FOR DRAWING AIR THROUGH SAID FILTERS, BETWEEN SAID PLATE AND SAID LAMP, ALONG SAID BAFFLE AND THROUGH THE DISCHARGE OPENING.
References Cited (Backward Citations)
DE516277C
Cited
US2195565A
Cited
US2251964A
Cited
US2628083A
Cited
US2449681A
Cited
US2638644A
Cited
US2651383A
Cited
US2855641A
Cited
US2945554A
Cited
US2999562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |