US3614499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Target structure for camera tubes consisting of a magnesium oxide layer supported on one side of a metal mesh
Assignee: General Electric Co
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Filing: 1969-05-01
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Granted: 1971-10-19
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Expires: 1989-05-01
Abstract
Abstract A target structure is disclosed having superior electrical properties and mechanical strength. The target comprises a homogenous magnesium oxide membrane supported by a fine gauge nickel mesh. The target structure can be used in either directbeam or return-beam-type camera tubes.
Inventors
- 👤 William C Deits
- 👤 Bernard E Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:41
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/41; H01J29/413
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
68 words
A target structure for a scanning beam electrOnic device comprising a metallic support frame member, a finely apertured nickel metal mesh rigidly positioned across said frame member, and a homogeneous magnesium oxide target comprising a continuous layer of about 400-600 angstrom thickness supported directly on one side of said metal mesh, one surface of said layer being in line contact with said one side of the metal mesh.
Claim 2
Dependent Claim
68 words
A target structure for a scanning beam electrOnic device comprising a metallic support frame member, a finely apertured nickel metal mesh rigidly positioned across said frame member, and a homogeneous magnesium oxide target comprising a continuous layer of about 400-600 angstrom thickness supported directly on one side of said metal mesh, one surface of said layer being in line contact with said one side of the metal mesh.
Claim 3
Dependent Claim
39 words
The target structure of claim 1 wherein said finely apertured nickel metal mesh has a gauge of about 1,000 lines per inch and has a ratio of mesh-to-opening area sufficient to provide about 60 percent transmission of light therethrough.
Claim 4
Dependent Claim
69 words
A rugged target structure for a scanning beam electronic device comprising a metallic support frame member, a finely apertured metal mesh rigidly positioned across said frame member, and a homogeneous, thin, magnesium oxide target comprising a continuous layer of about 400-600 angstrom thickness supported directly on one side of said metal mesh, one surface of said layer being in line contact with said one side of said metal mesh.
Claim 5
Dependent Claim
69 words
A rugged target structure for a scanning beam electronic device comprising a metallic support frame member, a finely apertured metal mesh rigidly positioned across said frame member, and a homogeneous, thin, magnesium oxide target comprising a continuous layer of about 400-600 angstrom thickness supported directly on one side of said metal mesh, one surface of said layer being in line contact with said one side of said metal mesh.
Claim 6
Dependent Claim
17 words
The target structure of claim 3 wherein said target layer comprises an oxidized layer of magnesium metal.
References Cited (Backward Citations)
US2785328A
Cited
US2922906A
Cited
US3249784A
Cited
US3319103A
Cited
US3441787A
Cited
US3509414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |