Patent US4000437A successfully refreshed from Google Patents.
US4000437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric display device
Assignee: Refac International Ltd
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Filing: 1975-12-17
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Granted: 1976-12-28
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Expires: 1995-12-17
Abstract
Abstract A solid state light emitting display device utilizing two light emitting elements displayed in a single channel having ends in which each element is disposed closer to the ends of the channel than to each other.
Inventors
- 👤 Saul Lederhandler
- 👤 Robert Maggio
- 👤 Winthrop Blythe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:06
CPC Classifications
H; H10; H10W; H10W90/00; H10H; H10H20/00; H10H20/80; H10H20/85; H10H20/855; H10H20/856
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
82 words
A display device comprising: a frame member having a channel formed therein; first and second solid state light emitting members arranged in said channel; said channel having only first and second end walls; said first and second light emitting members being fixed in spaced apart positions in a manner to define first and second spacings with said first and second end walls respectively and a third spacing between said members; said third spacing being larger than either said first or second spacing.
Claim 2
Dependent Claim
82 words
A display device comprising: a frame member having a channel formed therein; first and second solid state light emitting members arranged in said channel; said channel having only first and second end walls; said first and second light emitting members being fixed in spaced apart positions in a manner to define first and second spacings with said first and second end walls respectively and a third spacing between said members; said third spacing being larger than either said first or second spacing.
Claim 3
Dependent Claim
16 words
A display device in accordance with claim 1 wherein said first and second spacings are equal.
Claim 4
Dependent Claim
36 words
A display device in accordance with claim 2 including a plurality of said channels arranged at angles to one another to form adjacent closed loops, electrical means for activating the elements selected to form a display.
Claim 5
Dependent Claim
28 words
A display device in accordance with claim 1 wherein said frame includes first and second channels arranged at an angle to each other and forming a corner thereby.
Claim 6
Dependent Claim
38 words
A display device in accordance with claim 1 wherein: said solid state light emitting members have length said channel has length; and, said channel length is at least more than twice the length of said light emitting members.
Claim 7
Dependent Claim
81 words
The device claimed in claim 1 including further: a circuit board means; said circuit board means having bonding pads and first aligning members formed thereon; said frame member having aligning apertures; said frame member having second aligning members formed thereon for mating with said aligning apertures; said light emitting members disposed at least in groups of two at a spacing 1 and having a length q; and, each of said channels having an uninterrupted channel length greater than 1 + q.
Claim 8
Dependent Claim
21 words
The device claimed in claim 6 wherein: said first aligning members are apertures and, said second aligning members are mounting posts.
Claim 9
Dependent Claim
15 words
The device claimed in claim 7 wherein: said light emitting members comprise light emitting diodes.
Claim 10
Dependent Claim
17 words
The device claimed in claim 8 wherein: said light emitting diodes have a light transmitting coating thereon.
Claim 11
Dependent Claim
35 words
The device claimed in claim 1 wherein: said channel has thickness; said thickness formed by a plurality of straight wall members extending from said channel; each of said wall members having a single planar surface.
Claim 12
Dependent Claim
42 words
The device claimed in claim 10 including further: a filter plate member adapted to fit over said frame member and said channels for forming a visual contrast with said frame member such that said light emitting members will appear brighter when energized.
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) | 1979-12-28 | 1980-06-28 | 1980-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-28 | 1984-06-28 | 1984-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-28 | 1988-06-28 | 1988-12-28 | $7700.00 | Window Closed / Lapsed |