US3708622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode-ray tube with laminated safety panel and separate light-attenuating layer
Assignee: RCA Licensing Corp
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Filing: 1971-09-27
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Granted: 1973-01-02
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Expires: 1991-09-27
Abstract
Abstract A cathode-ray tube comprising an evacuated envelope including a viewing window, and a transparent glass safety panel laminated to the window with an adhesive material. The tube includes a separate nonreflective light-attenuating layer between the adhesive material and at least one of the window and the panel.
Inventors
- 👤 G Long
- 👤 M Brown
- 👤 G Guille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:03
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/89; H01J29/896; H01J29/87; H01J2229/00; H01J2229/87; H01J2229/875
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
11 words
a luminescent viewing screen inside said envelope adjacent said viewing window,
Claim 2
Dependent Claim
19 words
The cathode-ray tube defined in claim 1 wherein said light-attenuating layer is between said adhesive material and said window.
Claim 3
Dependent Claim
19 words
The cathode-ray tube defined in claim 1 wherein said light-attenuating layer is between said adhesive material and said panel.
Claim 4
Dependent Claim
17 words
a transparent glass safety panel having a surface closely spaced from said window and outside said envelope,
Claim 5
Dependent Claim
21 words
a separate nonreflective, light-attenuating layer coated on said panel surface, said layer being comprised of light-opaque particles dispersed in binder, and
Claim 6
Dependent Claim
27 words
The cathode-ray tube defined in claim 1 wherein said light-attenuating layer is a neutral gray filter which attenuates the brightness of transmitted light by at least 20%.
Claim 7
Dependent Claim
4 words
A cathode-ray tube comprising
Claim 8
Dependent Claim
19 words
an organic adhesive material adhering said laminating surface of said window to said coated surface of said safety panel.
Claim 9
Dependent Claim
20 words
The cathode-ray tube defined in claim 5 wherein said light-attenuating layer is comprised of carbon particles in an organic binder.
Claim 10
Dependent Claim
34 words
The cathode-ray tube defined in claim 5 wherein the binder for said light-attenuating layer is the primer layer normally used to promote the wetting and adherence of the laminating surfaces by said adhesive material.
Claim 11
Dependent Claim
20 words
The cathode-ray tube defined in claim 5 wherein said light-attenuating layer is comprised of light-opaque particles dispersed in organic binder.
Claim 12
Dependent Claim
21 words
The cathode-ray tube defined in claim 5 wherein said light-attenuating layer is comprised of light-opaque particles dispersed in an inorganic binder.
Claim 13
Dependent Claim
22 words
The cathode-ray tube defined in claim 5 wherein said light-attenuating layer is comprised of light-opaque particles of organic material in a binder.
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) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |