US3566102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light panel
Assignee: ARTCREST PRODUCTS CO Inc
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Filing: 1967-09-13
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Granted: 1971-02-23
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Expires: 1987-09-13
Abstract
Abstract A light panel which may be used from either side to produce two different lighting effects. The panel is a translucent sheet having a plurality of protuberances on one side and a plurality of indentations on the opposite side. Each of the protuberances has a plurality of plane surfaces intersecting the plane of the sheet, and each of the indentations has a plurality of plane surfaces also intersecting the plane of the sheet.
Inventors
- 👤 Arthur D Choyke Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:33
CPC Classifications
F; F21; F21V; F21V5/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
204 words
A translucent sheet for use as a reversible light panel having a plurality of randomly positioned protuberances on one surface, each of said protuberances having a random number of plane surfaces, each of said plane surfaces defining a random angle with the adjacent surface of the sheet, each of the protuberances having its upper portion rounded, and a plurality of regular indentations formed on the opposite surface of the sheet, each of the indentations being formed by four plane surfaces, each of the plane surfaces of the indentations defining a given angle with the adjacent opposite surface of the sheet, said indentations being aligned to have the edges of the indentations form straight lines with the adjacent surface of the sheet, each of the indentations having its depth from the respective adjacent surface of the sheet greater than the height of the highest protuberance above the respective adjacent surface of the sheet, whereby a light source positioned on one side of the sheet produces a given type optical effect when the sheet is viewed from the other side, And a light source positioned on the opposite side of the sheet produces another type optical effect when the sheet is viewed from the one side.
Claim 2
Dependent Claim
204 words
A translucent sheet for use as a reversible light panel having a plurality of randomly positioned protuberances on one surface, each of said protuberances having a random number of plane surfaces, each of said plane surfaces defining a random angle with the adjacent surface of the sheet, each of the protuberances having its upper portion rounded, and a plurality of regular indentations formed on the opposite surface of the sheet, each of the indentations being formed by four plane surfaces, each of the plane surfaces of the indentations defining a given angle with the adjacent opposite surface of the sheet, said indentations being aligned to have the edges of the indentations form straight lines with the adjacent surface of the sheet, each of the indentations having its depth from the respective adjacent surface of the sheet greater than the height of the highest protuberance above the respective adjacent surface of the sheet, whereby a light source positioned on one side of the sheet produces a given type optical effect when the sheet is viewed from the other side, And a light source positioned on the opposite side of the sheet produces another type optical effect when the sheet is viewed from the one side.
Claim 3
Dependent Claim
51 words
A translucent sheet for use as a reversible light panel as defined in claim 1, wherein the angle of the plane surface of the indentation with the adjacent surface of the sheet is greater than the angle between the plane surface of the protuberance with the adjacent surface of the sheet.
Claim 4
Dependent Claim
58 words
A translucent sheet for use as a reversible light panel as defined in claim 1, wherein the angle between the plane surface of the indentation and the respective adjacent surface of the sheet is at least twice as great as the largest angle between the plane surface of a protuberance and the respective adjacent surface of the sheet.
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |