Patent US3771507A successfully refreshed from Google Patents.
Patent US4006546A successfully refreshed from Google Patents.
US4006546A
Expired / Lapsed
US
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Back-lighted display arrangement
Assignee: GTE Sylvania Inc
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Filing: 1976-05-19
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Granted: 1977-02-08
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Expires: 1996-05-19
Abstract
Abstract A back-lighted display arrangement including a soft, compressible opaque light baffle sandwiched between a lamp assembly and a display panel. The light baffle has a grid-like configuration defining a plurality of compartments each of which is arranged to receive a different one of a plurality of lamps supported by the lamp assembly and to direct light emitted by the lamp onto a different one of a plurality of display areas of the display panel. The light baffle establishes a positive light-tight seal between the baffle and the lamp assembly and display panel for preventing light in one compartment from escaping into an adjacent compartment.
Inventors
- 👤 Richard W. Anderson
- 👤 Frederick F. Bodenrader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:14
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/04; G09F13/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
139 words
A back-lighted display arrangement, comprising: a light source support member supporting a plurality of light source means thereon; display means including a plurality of display areas each of which is associated with a different one of the plurality of light source means and is arranged to be back-lighted by light emitted by the associated light source means; and a light baffle of a compressible material compressively sandwiched between the light source support member and the display means for establishing a light seal between the baffle and the light source support member and display means, said compressed light baffle having portions defining a plurality of compartments each arranged to receive a different one of the plurality of light source means whereby light emitted by the light source means is directed onto the display area associated with the light source means.
Claim 2
Dependent Claim
139 words
A back-lighted display arrangement, comprising: a light source support member supporting a plurality of light source means thereon; display means including a plurality of display areas each of which is associated with a different one of the plurality of light source means and is arranged to be back-lighted by light emitted by the associated light source means; and a light baffle of a compressible material compressively sandwiched between the light source support member and the display means for establishing a light seal between the baffle and the light source support member and display means, said compressed light baffle having portions defining a plurality of compartments each arranged to receive a different one of the plurality of light source means whereby light emitted by the light source means is directed onto the display area associated with the light source means.
Claim 3
Dependent Claim
19 words
A back-lighted display arrangement in accordance with claim 1 wherein: the light baffle is of a soft, compressible material.
Claim 4
Dependent Claim
22 words
A back-lighted display arrangement in accordance with claim 1 wherein: the light baffle is of a flexible, resilient, light-weight, electrically non-conductive material.
Claim 5
Dependent Claim
20 words
A back-lighted display arrangement in accordance with claim 3 wherein: the light baffle is of a polyurethane cellular foam material.
Claim 6
Dependent Claim
56 words
A back-lighted display arrangement in accordance with claim 1 wherein: the light source means are arranged on the light source assembly in a row and column format; the compartments of the light baffle are in a row and column format; and the display areas of the display means are arranged in a row and column format.
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) | 1980-02-08 | 1980-08-09 | 1981-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-08 | 1984-08-09 | 1985-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-08 | 1988-08-09 | 1989-02-08 | $7700.00 | Window Closed / Lapsed |