Patent US4622492A successfully refreshed from Google Patents.
US4622492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Picture display panel
Assignee: US Philips Corp
•
Filing: 1984-08-27
•
Granted: 1986-11-11
•
Expires: 2004-08-27
Abstract
Abstract A picture display panel is provided having an envelope with internal reinforcement partitions formed onto a display window. The display window is provided with substantially V-shaped grooves on the outside opposite to contact surfaces with the reinforcement partitions. The reinforcement partitions thus become substantially invisible from the outside. The outermost edges of these V-shaped grooves are preferably rounded, and the picture display window surface between juxtaposed grooves may be convexly curved into cylindrical lenses to make the reinforcement partitions even more invisible.
Inventors
- 👤 Piet G. J. Barten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:11
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J29/00; H01J29/86; H01J29/89; H01J29/02; H01J29/028; H01J2329/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
68 words
A display panel comprising an envelope having a display window, a plurality of separated reinforcement partitions extending transversely to said display window, said reinforcement partitions being within said envelope, and a plurality of V-shaped grooves on an exterior surface of said display window with one of said plurality of V-shaped grooves being opposite to each of said plurality of separated reinforcement partitions to therefore render reinforcement partitions invisible.
Claim 2
Dependent Claim
68 words
A display panel comprising an envelope having a display window, a plurality of separated reinforcement partitions extending transversely to said display window, said reinforcement partitions being within said envelope, and a plurality of V-shaped grooves on an exterior surface of said display window with one of said plurality of V-shaped grooves being opposite to each of said plurality of separated reinforcement partitions to therefore render reinforcement partitions invisible.
Claim 3
Dependent Claim
17 words
A display panel according to claim 1, wherein outermost edges of said V-shaped grooves are rounded off.
Claim 4
Dependent Claim
17 words
A display patent according to claim 2, wherein said display window is convexly curved between adjacent grooves.
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) | 1989-11-10 | 1990-05-12 | 1990-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-10 | 1994-05-12 | 1994-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-10 | 1998-05-12 | 1998-11-11 | $7700.00 | Window Closed / Lapsed |