US4034534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Louvered ceiling
Assignee: Chicago Metallic Co LLC
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Filing: 1976-01-16
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Granted: 1977-07-12
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Expires: 1996-01-16
Abstract
Abstract A light transmitting false ceiling made up of louvers and supporting runners, the latter being adapted to be suspended from a normal ceiling with lamps mounted above the false ceiling. The louvers have extensions at opposite edges for engagement with and support by the adjacent runners. The louvers are made up of intersecting members defining open cells therebetween. Each of the louver members as well as each of the runners is of upwardly open channel section. The runners have downwardly extending slots in their upstanding walls to receive hook-shaped extensions on the louver members, and these slots are wider at the top than at the bottom to facilitate installation on site. The widened runner slots on one wall of each runner are offset from those on the opposed wall by the width of the louver channel members. The hooked-shaped extensions on the members protrude into the channels of the runners and together with the bottom and upstanding walls of the runners block light leaks through the widened runner slots so that light is transmitted uniformly through the false ceiling to yield the appearance of a single large louver with no apparent seams.
Inventors
- 👤 John Ludlum Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:27
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/34; E04B9/345; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7001; Y10T403/7003
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
264 words
A light transmitting, louvered ceiling assembly comprising: a. at least one runner of upwardly open channel section, comprising a first side-wall, a second side-wall and a base wall joining said side-walls; b. a louver comprising first and second sections, adapted to be supported on said runner, each of said first and second sections comprising at least one upwardly open channel member having a third side-wall, a fourth side-wall and a base wall joining said side-walls; c. a downwardly extending slot disposed in each of said first and second side-walls of said runner, each of said slots having widened upper portion, a narrowed lower portion and a substantially vertical edge, the vertical edges of the slots in said first and second side-walls being offset from each other by a distance substantially equal to the spacing between said third and fourth side-walls; d. each of said third side-walls comprising a downwardly extending hook-shaped extension, the extension from said first louver section being engaged in the slot in said runner first side-wall and the extension from said second louver section being engaged in the slot in said runner second side-wall, said extensions projecting within said runner channel, said third side-walls abutting against said vertical edges of said slots in proximity to said extensions, the fourth side-wall of said first louver section terminating in a substantially vertical edge which abuts against said runner first side-wall and the fourth side-wall of said second louver section terminating in a substantially vertical edge which abuts against said runner second side-wall, so as to prevent light leakage through said widened slot portions.
Claim 2
Dependent Claim
264 words
A light transmitting, louvered ceiling assembly comprising: a. at least one runner of upwardly open channel section, comprising a first side-wall, a second side-wall and a base wall joining said side-walls; b. a louver comprising first and second sections, adapted to be supported on said runner, each of said first and second sections comprising at least one upwardly open channel member having a third side-wall, a fourth side-wall and a base wall joining said side-walls; c. a downwardly extending slot disposed in each of said first and second side-walls of said runner, each of said slots having widened upper portion, a narrowed lower portion and a substantially vertical edge, the vertical edges of the slots in said first and second side-walls being offset from each other by a distance substantially equal to the spacing between said third and fourth side-walls; d. each of said third side-walls comprising a downwardly extending hook-shaped extension, the extension from said first louver section being engaged in the slot in said runner first side-wall and the extension from said second louver section being engaged in the slot in said runner second side-wall, said extensions projecting within said runner channel, said third side-walls abutting against said vertical edges of said slots in proximity to said extensions, the fourth side-wall of said first louver section terminating in a substantially vertical edge which abuts against said runner first side-wall and the fourth side-wall of said second louver section terminating in a substantially vertical edge which abuts against said runner second side-wall, so as to prevent light leakage through said widened slot portions.
Claim 3
Dependent Claim
30 words
The assembly set forth in claim 1 wherein said runners and louver members are steel extrusions, the exterior surfaces of the runners and louver members being painted the same color.
Claim 4
Dependent Claim
31 words
An assembly as claimed in claim 1, wherein said runners and louver members are aluminum alloy extrusions, the exterior surfaces of the runners and louver members being painted the same color.
Claim 5
Dependent Claim
28 words
An assembly as claimed in claim 1, wherein each of said slots has a vertical edge and an opposed edge sloping toward the bottom of said vertical edge.
Claim 6
Dependent Claim
42 words
An assembly as claimed in claim 1, wherein the channel heights of the louver members and runners are equal so that upon assembly of the louvers with the runners the base walls of said members and runners lie in the same plane.
Claim 7
Dependent Claim
34 words
The assembly set forth in claim 1 wherein each of said louver sections is formed of intersecting channel members, forming a grid of open cells between the members for transmission of light and air.
Claim 8
Dependent Claim
28 words
An assembly as claimed in claim 6, wherein said members have cooperating slot arrangements therein whereby the louver may be assembled on site by snapping said members together.
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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) | 1980-07-11 | 1981-01-10 | 1981-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-11 | 1985-01-10 | 1985-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-11 | 1989-01-10 | 1989-07-12 | $7700.00 | Window Closed / Lapsed |