Patent US4540491A successfully refreshed from Google Patents.
Patent US3573452A successfully refreshed from Google Patents.
US3573452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminaire
Assignee: General Electric Co
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Filing: 1969-04-14
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Granted: 1971-04-06
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Expires: 1989-04-14
Abstract
Abstract A wall mounted luminaire comprising a one-piece housing having a transverse wall sloping downwardly toward the rear forming an upper ballast compartment and a lower lamp compartment. The housing has rear vent openings at the top and bottom to permit convection flow of heated air through the housing while providing for drainage of rainwater which may enter the unit.
Inventors
- 👤 Lewis W Kenyon
- 👤 Robert G Kilpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:09
CPC Classifications
F; F21; F21V; F21V29/00; F21V29/50; F21V29/70; F21V29/83; F21S; F21S8/00; F21S8/03; F21S8/033; F21V17/00; F21V17/10; F21V17/104
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
153 words
A luminaire comprising, in combination, a housing having a rear wall, a transverse wall projecting forwardly from the top of said rear wall, and a top wall defining with said transverse wall a rearwardly open upper compartment above said rear wall, a light transmitting closure detachably secured to the front of said housing defining with said rear wall a lower compartment separated from the upper compartment by said transverse wall, lampholder means mounted in the upper compartment, said transverse wall having a lamp opening below said lampholder means through which a lamp may be inserted with substantial clearance for operative attachment to the lampholder means, said rear wall being formed at the bottom thereof with an aperture, whereby during operation of the luminaire cool air drawn into the lower compartment through said bottom aperture passes upwardly around the lamp, through said lamp opening and out through the rearward opening of the upper compartment.
Claim 2
Dependent Claim
153 words
A luminaire comprising, in combination, a housing having a rear wall, a transverse wall projecting forwardly from the top of said rear wall, and a top wall defining with said transverse wall a rearwardly open upper compartment above said rear wall, a light transmitting closure detachably secured to the front of said housing defining with said rear wall a lower compartment separated from the upper compartment by said transverse wall, lampholder means mounted in the upper compartment, said transverse wall having a lamp opening below said lampholder means through which a lamp may be inserted with substantial clearance for operative attachment to the lampholder means, said rear wall being formed at the bottom thereof with an aperture, whereby during operation of the luminaire cool air drawn into the lower compartment through said bottom aperture passes upwardly around the lamp, through said lamp opening and out through the rearward opening of the upper compartment.
Claim 3
Dependent Claim
15 words
A luminaire as defined in claim 1, said transverse wall sloping upwardly toward the front.
Claim 4
Dependent Claim
33 words
A luminaire as defined in claim 2, said transverse wall having at least one aperture at the front thereof through which heated air may flow from the lower compartment to the upper compartment.
Claim 5
Dependent Claim
34 words
A luminaire as defined in claim 2, said transverse wall having a plurality of spaced apertures at the front thereof through which heated air may flow from the lower compartment to the upper compartment.
Claim 6
Dependent Claim
16 words
A luminaire as defined in claim 3, including electrical operating components mounted in the upper compartment.
Claim 7
Dependent Claim
31 words
A luminaire as defined in claim 5, including a reflector mounted on said rear wall in the lower compartment for directing light from the lamp outwardly through said light transmitting closure.
Claim 8
Dependent Claim
44 words
A luminaire as defined in claim 6, said reflector having a lower portion extending generally along said rear wall and a forwardly bent upper portion, said upper portion directing convection airflow toward said lamp opening and defining with said rear wall a wiring compartment.
Claim 9
Dependent Claim
45 words
A luminaire as defined in claim 5, and a cover on the rear opening of said upper compartment, said cover being spaced at its top from said top wall so as to define therewith a vent for escape of heated air from said upper compartment.
Claim 10
Dependent Claim
26 words
A luminaire as defined in claim 8, said cover being spaced at its bottom from said transverse wall so as to define therewith a drain opening.
Claim 11
Dependent Claim
34 words
A luminaire as defined in claim 1, said top wall having a front surface and clamp band means clamping said light transmitting closure at its top to the front surface of said top wall.
Claim 12
Dependent Claim
37 words
A luminaire as defined in claim 10, said front surface being formed with projecting means having top and bottom surfaces, said clamp band means clamping said light transmitting closure to the bottom surface of said projecting means.
Claim 13
Dependent Claim
71 words
A luminaire as defined in claim 11, said light transmitting closure having a top surface bearing against said projecting means and a rear edge face urged against a bearing surface of said rear housing wall, said top surface and said rear face being at a predetermined angle relative to one another, said bottom surface and said bearing surface being at an angle less than said predetermined angle relative to one another.
Claim 14
Dependent Claim
76 words
A luminaire as defined in claim 10, said housing having opposite sides formed with recessed portions, hinge means at one end of said clamp band means hingedly connecting the same to said housing and arranged within one of said recessed portions, and latch means at the other end of said clamp band means for detachably connecting the same to said housing, said other end of said clamp band means being arranged within the other recessed portion.
Claim 15
Dependent Claim
22 words
A luminaire as defined in claim 1, and means for mounting said housing at its rear wall on a vertical supporting surface.
Claim 16
Dependent Claim
49 words
A luminaire as defined in claim 10, said clamp band means being hingedly connected at one end to said housing and latched at the other end to said housing, and means at the rear of said housing securing the respective ends of said clamp band means to said housing.
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) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |