US4067130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sign board casing
Assignee: COLORLUX AS
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Filing: 1976-11-04
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Granted: 1978-01-10
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Expires: 1996-11-04
Abstract
Abstract The invention relates to an oblong sign board casing comprising a reflector sheet provided with parallel embossings extending in planes substantially perpendicular to a longitudinal axis. The profiled reflector sheet is curved about 90° round a longitudinal axis, whereby a self-supporting construction is obtained. This construction renders it possible to provide the front plate with a flange and a sharp edge at the bottom. The embossings cause an effective diffusion of the light, also towards the bottom face.
Inventors
- 👤 Poul Rasmussen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:45
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/04; G09F13/0418; G09F13/0422; G09F13/0481; G09F13/14; G09F13/0472; G09F2013/145
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
145 words
A self supporting illuminated sign casing defined by a reflector of corrugated sheet, diffusing light means employing one or several light sources such as fluorescent tubes, said light sources being mounted on said reflector, and a front plate mounted at the edges of the reflector, the corrugations of said reflector sheet being substantially parallel embossings extending in planes substantially perpendicular to a longitudinal axis, said casing including: said corrugated reflector sheet comprising two substantially plane zones substantially perpendicular to each other and a curved intermediate zone having a radius of curvature of 3 to 20 cm, and by the front plate being secured to the two plane reflector zones perpendicular to each other, said front plate being further defined by a bottom portion with flange means and a sharp edge to enable placement of said sign board casing in adjoining relation to a proximate surface.
Claim 2
Dependent Claim
145 words
A self supporting illuminated sign casing defined by a reflector of corrugated sheet, diffusing light means employing one or several light sources such as fluorescent tubes, said light sources being mounted on said reflector, and a front plate mounted at the edges of the reflector, the corrugations of said reflector sheet being substantially parallel embossings extending in planes substantially perpendicular to a longitudinal axis, said casing including: said corrugated reflector sheet comprising two substantially plane zones substantially perpendicular to each other and a curved intermediate zone having a radius of curvature of 3 to 20 cm, and by the front plate being secured to the two plane reflector zones perpendicular to each other, said front plate being further defined by a bottom portion with flange means and a sharp edge to enable placement of said sign board casing in adjoining relation to a proximate surface.
Claim 3
Dependent Claim
17 words
A sign casing as claimed in claim 1, wherein the embossings having a substantially trapezoidal cross section.
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) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |