US3786602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modular ceiling assembly
Assignee: Celotex Corp
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Filing: 1972-05-01
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Granted: 1974-01-22
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Expires: 1992-05-01
Abstract
Abstract A modular light fixture and sound absorbing panel assembly which can be easily inserted into place in a preassembled suspension system with the support hangers for the suspension system being symmetrically located with respect to the supporting legs of the modules.
Inventors
- 👤 J Wilkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:51
CPC Classifications
E; E04; E04B; E04B9/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
228 words
A modular light fixture and sound absorbing panel assembly adapted to be supported on upstanding perpendicularly intersecting webs of a preassembled suspension system having a rectangular openings between spaced suspension members comprising: a rectangular light fixture having a top surface lying in a horizontal plane and having lower edges in a plane parallel with and spaced from said top surface, outwardly and downwardly extending tubular legs, each having a top portion connected to said top surface and overlying respective corners thereof, each of said top portions overlying and being connected to an area of said top surface of said light fixture at a respective underlying right angle formed by said rectangular top surface of said light fixture, each of said legs having a lower elongated terminal portion remote from said top portion and terminating in a plane parallel with and spaced from said plane formed by said lower edges, said lower elongated terminal portion being disposed in the vertical planes in which the perpendicularly intersecting webs connect, each of said lower terminal portions of said legs having slots therein adapted to fit over and engage at least two of said upstanding webs at their intersection, said lower terminal portion being longer than the length of said slots, and panels of sound absorbing material supported on said suspension system and lying against said lower edges of said light fixture.
Claim 2
Dependent Claim
228 words
A modular light fixture and sound absorbing panel assembly adapted to be supported on upstanding perpendicularly intersecting webs of a preassembled suspension system having a rectangular openings between spaced suspension members comprising: a rectangular light fixture having a top surface lying in a horizontal plane and having lower edges in a plane parallel with and spaced from said top surface, outwardly and downwardly extending tubular legs, each having a top portion connected to said top surface and overlying respective corners thereof, each of said top portions overlying and being connected to an area of said top surface of said light fixture at a respective underlying right angle formed by said rectangular top surface of said light fixture, each of said legs having a lower elongated terminal portion remote from said top portion and terminating in a plane parallel with and spaced from said plane formed by said lower edges, said lower elongated terminal portion being disposed in the vertical planes in which the perpendicularly intersecting webs connect, each of said lower terminal portions of said legs having slots therein adapted to fit over and engage at least two of said upstanding webs at their intersection, said lower terminal portion being longer than the length of said slots, and panels of sound absorbing material supported on said suspension system and lying against said lower edges of said light fixture.
Claim 3
Dependent Claim
31 words
A modular light fixture and sound absorbing panel assembly as recited in claim 1, in which said preassembled suspension system has square openings and said light fixture is of square configuration.
Claim 4
Dependent Claim
29 words
A modular light fixture and sound absorbing panel assembly as recited in claim 1 in which each of said tubular legs has at least two bends intermediate its ends.
Claim 5
Dependent Claim
40 words
A modular light fixture and sound absorbing assembly as recited in claim 1 in which said slots are in alIgned pairs with each pair of slots being in a vertical plane perpendicular to the other of said pair of slots.
Claim 6
Dependent Claim
280 words
In combination a modular light fixture and sound absorbing panel assembly, and a ceiling suspension assembly adapted to be fixed to an overhead support, said ceiling suspension assembly comprising a rectangular grid formed of interconnected perpendicularly intersecting coplanar suspension members, each of said suspension members having at least one central upstanding vertical web, means attached to said suspension members at said intersections and adapted to be secured to said overhead support for maintaining said suspension assembly in a horizontal plane; said light fixture comprising: a rectangular light fixture having a top surface lying in a horizontal plane and having lower edges in a plane parallel with and spaced from said top surface, outwardly and downwardly extending tubular legs, each having a top portion connected to said top surface and overlying respective corners thereof, each of said top portions overlying and being connected to an area of said top surface of said light fixture at a respective underlying right angle formed by said rectangular top surface of said light fixture, each of said legs having a lower elongated terminal portion remote from said top portion and terminating in a plane parallel with and spaced from said plane formed by said lower edges, said lower elongated terminal portion being disposed in the vertical planes in which the perpendicularly intersecting webs connect, each of said lower terminal portions of said legs having slots therein adapted to fit over and engage at least two of said upstanding webs at their intersection, said lower terminal portion being longer than the length of said slots, and panels of sound absorbing material supported on said suspension system and lying against said lower edges of said light fixture.
Claim 7
Dependent Claim
280 words
In combination a modular light fixture and sound absorbing panel assembly, and a ceiling suspension assembly adapted to be fixed to an overhead support, said ceiling suspension assembly comprising a rectangular grid formed of interconnected perpendicularly intersecting coplanar suspension members, each of said suspension members having at least one central upstanding vertical web, means attached to said suspension members at said intersections and adapted to be secured to said overhead support for maintaining said suspension assembly in a horizontal plane; said light fixture comprising: a rectangular light fixture having a top surface lying in a horizontal plane and having lower edges in a plane parallel with and spaced from said top surface, outwardly and downwardly extending tubular legs, each having a top portion connected to said top surface and overlying respective corners thereof, each of said top portions overlying and being connected to an area of said top surface of said light fixture at a respective underlying right angle formed by said rectangular top surface of said light fixture, each of said legs having a lower elongated terminal portion remote from said top portion and terminating in a plane parallel with and spaced from said plane formed by said lower edges, said lower elongated terminal portion being disposed in the vertical planes in which the perpendicularly intersecting webs connect, each of said lower terminal portions of said legs having slots therein adapted to fit over and engage at least two of said upstanding webs at their intersection, said lower terminal portion being longer than the length of said slots, and panels of sound absorbing material supported on said suspension system and lying against said lower edges of said light fixture.
Claim 8
Dependent Claim
45 words
In combination a modular light fixture and sound absorbing panel assembly and a ceiling suspension assembly as recited in claim 5 in which each of said suspension members has a central longitudinal cross-section of inverted U-shaped configuration with a pair of spaced parallel upstanding webs.
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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |