Patent US4657323A successfully refreshed from Google Patents.
US4044246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceiling mounted light fixture
Assignee: MARVIN ELECTRIC MANUFACTURING COMPANY Inc
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Filing: 1976-08-12
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Granted: 1977-08-23
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Expires: 1996-08-12
Abstract
Abstract A light fixture is disclosed which is capable of being mounted flush with a ceiling without causing overheating of an associated junction box set into the ceiling immediately above the fixture. An upwardly and radially outwardly extending passageway is defined in the fixture between a ceiling cover plate having an upwardly and radially outwardly extending lower surface and a funnelform plate spaced below the ceiling cover plate. The funnelform plate has a center opening and light bulbs are disposed outwardly of the opening, beneath this plate. Passageways are dispose in an annular ring about the fixture and below the plate such that ambient air must pass across the lights to the center opening in the plate. The air may then pass through the upwardly and outwardly extending passageway as it is heated by the plate. The continual passage of air in this manner prevents overheating of the associated junction box located in the ceiling.
Inventors
- 👤 Peter J. Docimo
- 👤 Paul L. Richey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 22:59
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/04; F21V; F21V29/00; F21V29/15; F21V29/50; F21V29/70; F21V29/74; F21V29/83
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
97 words
A light fixture to be mounted to a ceiling, comprising a ceiling cover plate having an underside extending upwardly and outwardly from a central position to meet the ceiling when positioned thereon; a second plate extending outwardly from a central position beneath said ceiling cover plate, said second plate having an opening therethrough; fastening means extending between said ceiling cover plate and said second plate to hold said second plate spaced from said ceiling cover plate to define and upwardly and radially outwardly extending passageway; light socket means positoned below said second plate outwardly of said opening.
Claim 2
Dependent Claim
97 words
A light fixture to be mounted to a ceiling, comprising a ceiling cover plate having an underside extending upwardly and outwardly from a central position to meet the ceiling when positioned thereon; a second plate extending outwardly from a central position beneath said ceiling cover plate, said second plate having an opening therethrough; fastening means extending between said ceiling cover plate and said second plate to hold said second plate spaced from said ceiling cover plate to define and upwardly and radially outwardly extending passageway; light socket means positoned below said second plate outwardly of said opening.
Claim 3
Dependent Claim
35 words
The light fixture of claim 1 further comprising inlet passageway means spaced from said light socket means beneath said second plate such that ambient air may flow past said light socket means to said opening.
Claim 4
Dependent Claim
19 words
The light fixture of claim 1 wherein said second plate extends upwardly and radially outwardly in a funnelform shape.
Claim 5
Dependent Claim
32 words
The light fixture of claim 1 further including a mounting assembly, said mounting assembly being attachable to the ceiling, said ceiling cover plate being capable of fixedly depending from said mounting assembly.
Claim 6
Dependent Claim
49 words
The light fixture of claim 1 further including a cover diffuser depending from near said second plate and an inlet passageway means spaced from said light socket means between said second plate and said diffuser such that ambient air may flow past said light socket means to said opening.
Claim 7
Dependent Claim
32 words
The light fixture of claim 1 wherein said ceiling cover plate defines a cavity between said ceiling cover plate and said ceiling when said ceiling cover plate is positioned against said ceiling.
Claim 8
Dependent Claim
14 words
The light fixture of claim 6 further including insulative material positioned in said cavity.
Claim 9
Dependent Claim
16 words
The light fixture of claim 1 wherein said opening is centrally located through said second plate.
Claim 10
Dependent Claim
148 words
A light fixture to be mounted to a ceiling, comprising a mounting assembly, said mounting assembly being attachable to the ceiling; a ceiling cover plate capable of being fixed beneath said mounting assembly and having an underside extending upwardly and outwardly from a central positon when fixed to said mounting assembly; a second plate extending upwardly and outwardly from a central position beneath said ceiling cover plate, said second plate having an opening through the center thereof; fastening means extending between said ceiling cover plate and said second plate to hold said second plate spaced from said ceiling cover plate to define an upwardly and radially outwardly extending passageway; light socket means positioned below said second plate outwardly of said opening; inlet passageway means spaced from said light socket means beneath said second plate such that ambient air may flow past said light socket means to said opening.
Claim 11
Dependent Claim
148 words
A light fixture to be mounted to a ceiling, comprising a mounting assembly, said mounting assembly being attachable to the ceiling; a ceiling cover plate capable of being fixed beneath said mounting assembly and having an underside extending upwardly and outwardly from a central positon when fixed to said mounting assembly; a second plate extending upwardly and outwardly from a central position beneath said ceiling cover plate, said second plate having an opening through the center thereof; fastening means extending between said ceiling cover plate and said second plate to hold said second plate spaced from said ceiling cover plate to define an upwardly and radially outwardly extending passageway; light socket means positioned below said second plate outwardly of said opening; inlet passageway means spaced from said light socket means beneath said second plate such that ambient air may flow past said light socket means to said opening.
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) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |