US3922073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light diffuser system
Assignee: Individual
•
Filing: 1973-04-25
•
Granted: 1975-11-25
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Expires: 1993-04-25
Abstract
Abstract A light diffuser system suspended from a ceiling below a light source includes a framework of T-bar members depending from the ceiling and defining rectangular openings. Secured in each opening is a one-piece, translucent plastic light diffuser panel, formed in a coffer configuration with the cavity opening downward and the walls of the coffer inclined slightly from vertical toward the center of the opening. The walls are tapered from the bottom to the transverse portion, and are painted with an opaque color coating on the ceiling-facing surface. Light diffusing through the translucent, transverse portion stikes the walls, illuminating the color coating more strongly as the taper of the walls increases, and causing a color gradient effect which enhances the apparent depth of the coffer and increases the esthetic appeal of the diffuser system.
Inventors
- 👤 Robert A D Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:14
CPC Classifications
F; F21; F21V; F21V3/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
92 words
Light diffusing means for a ceiling with a light source above comprising: a unitary member having side walls joined to a laterally extending top planar wall and defining a downwardly directed cavity, said top planar wall being translucent for the passage of light from the light source therethrough, and said side walls being translucent; and opaque means substantially completely covering at least one of the inside and outside surfaces of all said side walls for preventing passage of light through said side walls and reflecting incident light passing through said top wall.
Claim 2
Dependent Claim
92 words
Light diffusing means for a ceiling with a light source above comprising: a unitary member having side walls joined to a laterally extending top planar wall and defining a downwardly directed cavity, said top planar wall being translucent for the passage of light from the light source therethrough, and said side walls being translucent; and opaque means substantially completely covering at least one of the inside and outside surfaces of all said side walls for preventing passage of light through said side walls and reflecting incident light passing through said top wall.
Claim 3
Dependent Claim
28 words
The light diffusing means of claim 1 in which said opaque means is affixed to the inner surface of said side walls and constitutes a sound absorbing material.
Claim 4
Dependent Claim
29 words
The light diffusing means of claim 1 in which said side walls and top wall define a coffer, and in which said side walls converge towards said top wall.
Claim 5
Dependent Claim
34 words
The light diffusing system of claim 1, in which the outer surfaces of said side walls are provided with said opaque means as a film to reflect incident light passing through said top wall.
Claim 6
Dependent Claim
17 words
The system of claim 4 in which said film comprises a pigmented paint applied to said surfaces.
Claim 7
Dependent Claim
26 words
The system of claim 1 in which said side walls are tapered in thickness from said top wall to the distal ends of said side walls.
Claim 8
Dependent Claim
18 words
The system of claim 6 in which said side walls have a minimum thickness adjacent said top wall.
Claim 9
Dependent Claim
23 words
The system of claim 1 wherein said member includes horizontally extending flanges extending outwardly from the distal end portions of said side walls.
Claim 10
Dependent Claim
14 words
The system of claim 1 wherein said opaque means is provided with a color.
Claim 11
Dependent Claim
14 words
The system of claim 4 wherein said Opaque means is provided with a color.
Claim 12
Dependent Claim
17 words
The system of claim 1 wherein said side walls define included obtuse angles with said top wall.
Claim 13
Dependent Claim
20 words
The system of claim 11 in which said obtuse angles are in the range of about 100* to 125 *.
Claim 14
Dependent Claim
12 words
The system of claim 11 wherein said angles are about 105 *.
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) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |