Patent US4849862A successfully refreshed from Google Patents.
US4849862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspended air purifier light fixture
Assignee: Mega Erg Inc
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Filing: 1988-02-19
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Granted: 1989-07-18
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Expires: 2008-02-19
Abstract
Abstract suspended air purifier fixture including, a radially-symmetrical enclosure forming an internal cavity and including a peripheral surface having a plurality of circumferential openings and a lower surface with a central opening perpendicular and adjacent to the peripheral surface. A centrifugal fan is located within the enclosure and is coaxial with the central opening. An intake assembly is coaxial with the central opening and includes a vane for directing an intake flow of air through the assembly and into the enclosure through the central opening. An air filter is circumferentially disposed relative to the fan and occupies the space between the vane and the peripheral surface. An output grille covers the circumferential openings to have an exhaust air flow perpendicular to the intake thorugh the central opening. Suspension means are located at the surface of the enclosure opposite to the lower surface for supporting the fixture from an overhead position.
Inventors
- 👤 Steve Diskin
- 👤 Lawrence Lerner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:22
CPC Classifications
F; F24; F24F; F24F8/00; F24F8/80; F24F8/10; F24F8/108; F24F8/15; F24F8/158; F24F2221/00; F24F2221/14; Y; Y02; Y02A; Y02A50/00; Y02A50/20
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
178 words
A suspended air purifier fixture which comprises: a symmetrical enclosure extending radially outward from a central axis and forming an internal cavity disposed around the central axis and including a peripheral surface having a plurality of circumferential openings and further including a lower surface of the enclosure perpendicular and adjacent said peripheral surface and said lower surface having a central opening disposed around the central axis, centrifugal fan means located within said enclosure and coaxial with said central opening, an intake assembly coaxial with the central opening and comprising vane means for directing an intake flow of air through said assembly and into said enclosure through the central opening, air filtration means circumferentially disposed relative to said fan means and occupying the space between the vane and the peripheral surface, an output grille covering the circumferential openings in said peripheral surface to have an exhaust air flow perpendicular to the intake through the central opening, and suspension means located at the surface of the enclosure opposite to said lower surface for supporting the fixture from an overhead position.
Claim 2
Dependent Claim
178 words
A suspended air purifier fixture which comprises: a symmetrical enclosure extending radially outward from a central axis and forming an internal cavity disposed around the central axis and including a peripheral surface having a plurality of circumferential openings and further including a lower surface of the enclosure perpendicular and adjacent said peripheral surface and said lower surface having a central opening disposed around the central axis, centrifugal fan means located within said enclosure and coaxial with said central opening, an intake assembly coaxial with the central opening and comprising vane means for directing an intake flow of air through said assembly and into said enclosure through the central opening, air filtration means circumferentially disposed relative to said fan means and occupying the space between the vane and the peripheral surface, an output grille covering the circumferential openings in said peripheral surface to have an exhaust air flow perpendicular to the intake through the central opening, and suspension means located at the surface of the enclosure opposite to said lower surface for supporting the fixture from an overhead position.
Claim 3
Dependent Claim
29 words
The suspended air purifier fixture as recited in claim 1 wherein said enclosure means includes an upper plate and lower plate separated by spacers to form the internal cavity.
Claim 4
Dependent Claim
18 words
The suspended air purifier fixture as recited in claim 1 wherein said filter means includes an electrostatic precipitator.
Claim 5
Dependent Claim
17 words
The suspended air purifier fixture as recited in claim 1 where said filter means includes media filters.
Claim 6
Dependent Claim
22 words
The suspended air purifier fixture as recited in claim 1 including additional filter means and with the additional filter means activated charcoal.
Claim 7
Dependent Claim
19 words
The suspended air purifier fixture as recited in claim 1 additionally including illumination means mounted below said lower surface.
Claim 8
Dependent Claim
39 words
The suspended air purifier fixture as recited in claim 6 wherein said illumination means includes translucent diffuser panels mounted below said lower surface to form a space between said diffuser panels and lower surface for mounting light emitting devices.
Claim 9
Dependent Claim
42 words
The suspended air purifier fixture as recited in claim 7 wherein the space between said diffuser panel and lower surface communicates with the central opening to have air trapped at the periphery of the fixture drawn into the central opening for filtering.
Claim 10
Dependent Claim
17 words
The suspended air purifier fixture recited in claim 1 wherein the symmetrical enclosure is octagon in shape.
Claim 11
Dependent Claim
44 words
The suspended air purifier fixture recited in claim 1 wherein the centrifugal fan means has a toroidal shape formed by a plurality of vane members and with the vane members extending forwardly relative to the direction of rotation of the fan to reduce noise.
Claim 12
Dependent Claim
29 words
The suspended air purifier fixture as recited in claim 1 additionally including shroud elements located on an upper surface to direct air to the cavity from an upper position.
Claim 13
Dependent Claim
34 words
The suspended air purifier fixture as recited in claim 11 wherein the fan means includes a fan motor and the air directed to the cavity by the shroud elements provides cooling of the motor.
References Cited (Backward Citations)
US2359021A
Cited
US3320406A
Cited
US4526592A
Cited
US4560395A
Cited
US4666478A
Cited
US4626262A
Cited
US4681024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-17 | 1993-01-16 | 1993-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-17 | 1997-01-16 | 1997-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-17 | 2001-01-16 | 2001-07-18 | $7700.00 | Window Closed / Lapsed |