US3422220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television display tube with ferromagnetic screening member
Assignee: Philips North America LLC
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Filing: 1966-05-10
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Granted: 1969-01-14
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Expires: 1986-05-10
Abstract
No abstract record available.
Inventors
- 👤 Robert Richard Bathelt
- 👤 Constantius Johannes Wal Panis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:53
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/867; H01J29/87
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A CATHODE-RAY TUBE FOR COLOR TELEVISION DISPLAY COMPRISING AN ENVELOPE HAVING ADJOINING CONE AND WINDOW PORTIONS HAVING SMOOTHLY GROUND EDGES JOINED BY A GLAZELIKE MATERIAL, SAID WINDOW PORTION HAVING A SIDE FACE PROVIDED WITH REFERENCE EXTENSIONS, A FERROMAGNETIC SCREENING HOOD SURROUNDING SAID SIDE FACE OF THE WINDOW AND A MAJOR PORTION OF THE CONE, SAID HOOD FURTHER COMPRISING TWO JOINED ANNULAR PORTIONS, ONE OF WHICH SURROUNDS AND IS SPACED FROM THE SIDE-FACE OF THE WINDOW AND SUPPORTS MEMBERS FOR POSITIONING THE TUBE IN A HOUSING, SAID PORTION HAVING A WIDTH SUCH THAT SAID PORTION EXTENDS BEYOND THE JUNCTURE BETWEEN THE CONE AND THE WINDOW, AND A FILLER MATERIAL FILLING THE SPACE BETWEEN SAID PORTION AND THE SIDE-FACE OF THE WINDOW WHEREBY SAID PORTION SERVES AN ANTI-IMPLOSION MEMBER, SAID JUNCTURE BETWEEN THE CONE AND THE WINDOW AND THE SURFACES OF SAID REFERENCE EXTENSIONS BEING FREE OF AN ADHESIVE CONTACT WITH SAID FILLER MATERIAL.
Claim 2
Dependent Claim
152 words
A CATHODE-RAY TUBE FOR COLOR TELEVISION DISPLAY COMPRISING AN ENVELOPE HAVING ADJOINING CONE AND WINDOW PORTIONS HAVING SMOOTHLY GROUND EDGES JOINED BY A GLAZELIKE MATERIAL, SAID WINDOW PORTION HAVING A SIDE FACE PROVIDED WITH REFERENCE EXTENSIONS, A FERROMAGNETIC SCREENING HOOD SURROUNDING SAID SIDE FACE OF THE WINDOW AND A MAJOR PORTION OF THE CONE, SAID HOOD FURTHER COMPRISING TWO JOINED ANNULAR PORTIONS, ONE OF WHICH SURROUNDS AND IS SPACED FROM THE SIDE-FACE OF THE WINDOW AND SUPPORTS MEMBERS FOR POSITIONING THE TUBE IN A HOUSING, SAID PORTION HAVING A WIDTH SUCH THAT SAID PORTION EXTENDS BEYOND THE JUNCTURE BETWEEN THE CONE AND THE WINDOW, AND A FILLER MATERIAL FILLING THE SPACE BETWEEN SAID PORTION AND THE SIDE-FACE OF THE WINDOW WHEREBY SAID PORTION SERVES AN ANTI-IMPLOSION MEMBER, SAID JUNCTURE BETWEEN THE CONE AND THE WINDOW AND THE SURFACES OF SAID REFERENCE EXTENSIONS BEING FREE OF AN ADHESIVE CONTACT WITH SAID FILLER MATERIAL.
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) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |