Patent US3581448A successfully refreshed from Google Patents.
US3581448A
Expired / Lapsed
US
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Support for luminaire and ceiling panels
Assignee: Armstrong World Industries Inc
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Filing: 1969-04-16
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Granted: 1971-06-01
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Expires: 1989-04-16
Abstract
Abstract The ceiling is made of a plurality of square modules, each module containing an illuminating means. A support structure mounts a square frame member in the middle and above the grid members forming the lower plane of the ceiling. An illuminating means is mounted in the square frame to define the upper plane of the ceiling. Ceiling boards are rested against the grid members in the lower plane of the ceiling and the frame member in the upper plane of the ceiling to form a module. The module gives the appearance of a square assembly with a square lighting fixture mounted therein and four trapezoidal ceiling panels extending from the grid members of the square module to the square lighting fixture.
Inventors
- 👤 Henry J Roux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:43
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/06; E04B9/12; E04B9/16; E04B9/32
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
162 words
A suspended ceiling for use with a room having a main structural ceiling from which said suspended ceiling is to be suspended comprising a main grid assembly consisting of a plurality of grid members arranged in a polygonal configuration defining the lower plane of the suspended ceiling, smaller frame members being formed into a smaller polygonal configuration support frame and being positioned above the lower ceiling plane and centrally of the module formed by the grid members to form the upper ceiling plane, independent support means connected to the support frame in the upper ceiling plane and carried by the grid members in the lower ceiling plane for positioning the upper frame relative to the grid members and to carry the load placed on the upper frame, a plurality of trapezoidal ceiling boards being carried by the grid members and upper support frame, and a lighting fixture being mounted within the upper support frame constituting the upper plane of the ceiling system.
Claim 2
Dependent Claim
162 words
A suspended ceiling for use with a room having a main structural ceiling from which said suspended ceiling is to be suspended comprising a main grid assembly consisting of a plurality of grid members arranged in a polygonal configuration defining the lower plane of the suspended ceiling, smaller frame members being formed into a smaller polygonal configuration support frame and being positioned above the lower ceiling plane and centrally of the module formed by the grid members to form the upper ceiling plane, independent support means connected to the support frame in the upper ceiling plane and carried by the grid members in the lower ceiling plane for positioning the upper frame relative to the grid members and to carry the load placed on the upper frame, a plurality of trapezoidal ceiling boards being carried by the grid members and upper support frame, and a lighting fixture being mounted within the upper support frame constituting the upper plane of the ceiling system.
Claim 3
Dependent Claim
42 words
The ceiling system of claim 1 wherein the means supporting the support frame relative to the grid members is a plurality of truss structureS resting upon the grid members and support members extending between the truss members and carrying the support frame.
Claim 4
Dependent Claim
42 words
The ceiling system of claim 2 wherein molding members extend from the corners of the support frame to the corners of the grid members forming the ceiling module to provide a decorative effect at the joint between two adjacent trapezoidal ceiling boards.
References Cited (Backward Citations)
US2549189A
Cited
US2710335A
Cited
US3321877A
Cited
US3343310A
Cited
US3372270A
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US3415018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |