Patent US495520A successfully refreshed from Google Patents.
Patent US3108529A successfully refreshed from Google Patents.
US3108529A
Expired / Lapsed
US
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Ceiling light and air diffusing fixture
Assignee: Lightolier Inc
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Filing: 1961-10-03
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Granted: 1963-10-29
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Expires: 1981-10-03
Abstract
No abstract record available.
Inventors
- 👤 Donald A Sweetser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:38
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F13/16; F21; F21V; F21V33/00; F21V33/0088; F24F13/02; F24F13/06; F24F13/078
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A LIGHTING FIXTURE COMPRISING A HOUSING HAVING END AND SIDE WALLS AND A TOP WALL, A PAIR OF ELONGATED PANELS POSITIONED IN THE INTERIOR OF SAID HOUSING AND DEPENDING FROM THE TOP WALL THEREOF, SAID PANELS EXTENDING THE LENGTH OF SAID HOUSING, AND BEING SPACED FROM SAID SIDE WALLS RESPECTIVELY, TO DEFINE ELONGATED PASSAGEWAYS WITH RESPECT THERETO, EACH PASSAGEWAY HAVING AN ELONGATED OUTLET AT ITS LOWER END, FLUORESECENT LAMP SUPPORT MEANS IN SAID HOUSING ADAPTED TO SUPPORT FLUORESCENT LAMPS BENEATH SAID TOP WALL AND BETWEEN SAID PANELS, SAID TOP WALL HAVING OPENINGS ALIGNED RESPECTIVELY WITH THE UPPER ENDS OF SAID PASSAGEWAYS TO WHICH A SOURCE OF AIR MAY BE APPLIED, A DAMPER SUPPORTED ON SAID HOUSING TO CONTROL THE QUANTITY OF AIR APPLIED TO SAID OPENINGS AND MEANS ACCESSIBLE THROUGH ONE OF THE OUTLETS TO CONTROL THE POSITION OF SAID DAMPER.
Claim 2
Dependent Claim
141 words
A LIGHTING FIXTURE COMPRISING A HOUSING HAVING END AND SIDE WALLS AND A TOP WALL, A PAIR OF ELONGATED PANELS POSITIONED IN THE INTERIOR OF SAID HOUSING AND DEPENDING FROM THE TOP WALL THEREOF, SAID PANELS EXTENDING THE LENGTH OF SAID HOUSING, AND BEING SPACED FROM SAID SIDE WALLS RESPECTIVELY, TO DEFINE ELONGATED PASSAGEWAYS WITH RESPECT THERETO, EACH PASSAGEWAY HAVING AN ELONGATED OUTLET AT ITS LOWER END, FLUORESECENT LAMP SUPPORT MEANS IN SAID HOUSING ADAPTED TO SUPPORT FLUORESCENT LAMPS BENEATH SAID TOP WALL AND BETWEEN SAID PANELS, SAID TOP WALL HAVING OPENINGS ALIGNED RESPECTIVELY WITH THE UPPER ENDS OF SAID PASSAGEWAYS TO WHICH A SOURCE OF AIR MAY BE APPLIED, A DAMPER SUPPORTED ON SAID HOUSING TO CONTROL THE QUANTITY OF AIR APPLIED TO SAID OPENINGS AND MEANS ACCESSIBLE THROUGH ONE OF THE OUTLETS TO CONTROL THE POSITION OF SAID DAMPER.
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) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |