US4234914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incandescent display system
Assignee: Stewart Warner Electronics Corp
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Filing: 1979-03-13
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Granted: 1980-11-18
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Expires: 1999-03-13
Abstract
Abstract An incandescent display system suitable for use in displaying video images is disclosed. Incandescent lamps are positioned closely to each other in order to achieve a high resolution picture. The lamps are mounted in modules which can be removed from the rear of the display for periodic servicing. The modules include openings to permit cooling air to flow over the surface of the lamps and the display system enclosure is pressurized to create a constant flow of air for this purpose.
Inventors
- 👤 Raymond J. Boesen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:22
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/28
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
133 words
A lamp tray assembly for an incandescent lamp display system including an enclosure having a front panel with a plurality of openings therethrough for the receipt of incandescent lamps said tray assembly comprising: (a) a chassis having a pluraity of openings therein, (b) a plurality of lamp sockets, each secured over one of said chassis openings and adapted to receive an incandescent lamp therein, said sockets being smaller in size than the chassis openings so that air may pass through said openings to cool the incandescent lamps, (c) means for releasably securing said tray assembly including said chassis and lamp sockets to said front panel from the rear side thereof during operation of said display system and permitting removal of the tray assembly from said front panel to periodically service the incandescent lamps.
Claim 2
Dependent Claim
133 words
A lamp tray assembly for an incandescent lamp display system including an enclosure having a front panel with a plurality of openings therethrough for the receipt of incandescent lamps said tray assembly comprising: (a) a chassis having a pluraity of openings therein, (b) a plurality of lamp sockets, each secured over one of said chassis openings and adapted to receive an incandescent lamp therein, said sockets being smaller in size than the chassis openings so that air may pass through said openings to cool the incandescent lamps, (c) means for releasably securing said tray assembly including said chassis and lamp sockets to said front panel from the rear side thereof during operation of said display system and permitting removal of the tray assembly from said front panel to periodically service the incandescent lamps.
Claim 3
Dependent Claim
48 words
The lamp tray assembly according to claim 1 wherein said chassis openings are circular and said sockets are of a smaller diameter than said openings thereby to let air pass through the annular space defined between the circumference of the socket and the circumference of the chassis opening.
Claim 4
Dependent Claim
33 words
The lamp tray assembly according to claim 1 wherein said tray assembly further includes handle means secured to said chassis permitting easy withdrawal of the tray assembly from the display system for servicing.
Claim 5
Dependent Claim
36 words
The assembly according to claim 1 wherein said chassis openings are spaced one from the other at less than 2.5 inches center to center thereby to produce a high density display having improved visual display resolution.
References Cited (Backward Citations)
US2295863A
Cited
US2597680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-18 | 1984-05-19 | 1984-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-18 | 1988-05-19 | 1988-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-18 | 1992-05-19 | 1992-11-18 | $7700.00 | Window Closed / Lapsed |