US3555267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilated lighting fixture
Assignee: LOK PRODUCTS Co
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Filing: 1967-09-13
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Granted: 1971-01-12
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Expires: 1987-09-13
Abstract
Abstract A recessed lighting fixture having a ventilating channel positioned at one or both ends thereof. The channel is formed by plates, one having an offset portion and the other extending into the offset portion to form a tortuous path for air flowing into the fixture. The channel acts as a dust trap and prevents any light from escaping therethrough.
Inventors
- 👤 Ormond S Sutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:45
CPC Classifications
F; F21; F21V; F21V31/00; F21V31/03; F21S; F21S8/00; F21S8/02; F21V29/00; F21V29/50; F21V29/70; F21V29/83; F21V33/00; F21V33/0088; F21V33/0092; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
148 words
A lighting fixture comprising: a housing, means for mounting lamps in said housing, a plurality of slots formed in said housing above said lamp mounting means whereby air may exit therefrom, diffuser means mounted on said housing, said diffuser means having an upstanding flange along each longitudinal edge thereof, and means positioned at the end of said housing for permitting air to enter said housing, said means comprising a first plate having an offset portion, a second plate having a portion extending into said offset portion of said first plate whereby a tortuous path is formed, said path having a first end opening within said housing and a second end opening exteriorly thereof; a pair of end plates for mounting said first and second plates, and clip means mounted on each of said end plates, said clip means being mounted on said upstanding flanges of said diffuser means.
Claim 2
Dependent Claim
148 words
A lighting fixture comprising: a housing, means for mounting lamps in said housing, a plurality of slots formed in said housing above said lamp mounting means whereby air may exit therefrom, diffuser means mounted on said housing, said diffuser means having an upstanding flange along each longitudinal edge thereof, and means positioned at the end of said housing for permitting air to enter said housing, said means comprising a first plate having an offset portion, a second plate having a portion extending into said offset portion of said first plate whereby a tortuous path is formed, said path having a first end opening within said housing and a second end opening exteriorly thereof; a pair of end plates for mounting said first and second plates, and clip means mounted on each of said end plates, said clip means being mounted on said upstanding flanges of said diffuser means.
Claim 3
Dependent Claim
32 words
The fixture of claim 1 wherein said second plate is provided with pin means adapted to cooperate with said housing to permit said diffuser means to be moved away from said housing.
Claim 4
Dependent Claim
37 words
The fixture of claim 1 wherein said flanges of said diffuser means are each provided with a horizontally extending lip, and wherein said housing is provided with inturned flanges for supporting said lips of said diffuser means.
Claim 5
Dependent Claim
184 words
A lighting fixture comprising: a housing, an enclosure plate within said housing, means in said housing below said closure plate for mounting lamps therein, a transformer enclosure within said housing and above said enclosure plate, a plurality of slots formed in said enclosure plate adjacent said transformer enclosure, a plurality of slots formed in said housing above said enclosure plate whereby air may exit from said housing, diffuser means mounted on said housing, said diffuser means having an upstanding flange along each longitudinal edge thereof, and means positioned at one end of said housing for permitting air to enter said housing, said means comprising a first plate having an offset portion, a second plate having a portion extending into said offset portion of said first plate whereby a tortuous path is formed, said path having a first end opening within said housing and a second end opening exteriorly thereof; a pair of end plates for mounting said first and second plates, and clip means mounted on each of said end plates, said clip means being mounted on said upstanding flanges of said diffuser means.
Claim 6
Dependent Claim
184 words
A lighting fixture comprising: a housing, an enclosure plate within said housing, means in said housing below said closure plate for mounting lamps therein, a transformer enclosure within said housing and above said enclosure plate, a plurality of slots formed in said enclosure plate adjacent said transformer enclosure, a plurality of slots formed in said housing above said enclosure plate whereby air may exit from said housing, diffuser means mounted on said housing, said diffuser means having an upstanding flange along each longitudinal edge thereof, and means positioned at one end of said housing for permitting air to enter said housing, said means comprising a first plate having an offset portion, a second plate having a portion extending into said offset portion of said first plate whereby a tortuous path is formed, said path having a first end opening within said housing and a second end opening exteriorly thereof; a pair of end plates for mounting said first and second plates, and clip means mounted on each of said end plates, said clip means being mounted on said upstanding flanges of said diffuser means.
Claim 7
Dependent Claim
32 words
The fixture of claim 4 wherein said second plate is provided with pin means adapted to cooperate with said housing to permit said diffuser means to be moved away from said housing.
Claim 8
Dependent Claim
37 words
The fixture of claim 4 wherein said flanges of said diffuser means are each provided with a horizontally extending lip, and wherein said housing is provided with inturned flanges for supporting said lips of said diffuser means.
Claim 9
Dependent Claim
33 words
The fixture of claim 4 wherein each of said clip means has a U-shaped portion for receiving said flange of said diffuser means, said U-shaped portion having tangs for firmly grasping said flange.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |