US4529905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray tube apparatus
Assignee: Sony Corp
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Filing: 1982-12-07
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Granted: 1985-07-16
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Expires: 2002-12-07
Abstract
Abstract A cathode ray tube apparatus having a metal body with heat radiation effect which is located at least at a front periphery of a front panel of the cathode ray tube, a transparent panel located at the front of the front panel and facing the front panel with a predetermined distance therebetween, the metal body abutting the front periphery of the front panel and a periphery of the transparent panel to form a space therein; and transparent coolant sealed in the space.
Inventors
- 👤 Akio Ohkoshi
- 👤 Kiichi Ueno
- 👤 Tsuneo Muchi
- 👤 Tamihaura Masatoki
- 👤 Isamu Michiba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:26
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/006; H01J2229/00; H01J2229/0061; H01J2229/0069; H01J2229/0076; H01J2229/0084; H01J2229/0092
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
130 words
A liquid cooled cathode ray tube comprising a cathode ray tube with a transparent planar front panel coated with a phosphor screen, a metal heat radiator and spacer surrounding said planar front panel and extending outwardly therefrom, a planar transparent panel supported by said metal heat radiator a short spaced distance from said planar front panel, elastic resin between said metal heat radiator and spacer and said planar front panel and said planar transparent panel and elastically sealing said heat radiator to said planar front panel and to said planar transparent panel to form a closed sealed liquid retaining chamber, and transparent coolant selected from the group of water, benzyl alcohol, methyl benzoate, ethyl benzoate, diethyl oxalate, dibuthyl phthalate, ethylene glycol, and mixtures thereof, filling the sealed liquid retaining chamber.
Claim 2
Dependent Claim
130 words
A liquid cooled cathode ray tube comprising a cathode ray tube with a transparent planar front panel coated with a phosphor screen, a metal heat radiator and spacer surrounding said planar front panel and extending outwardly therefrom, a planar transparent panel supported by said metal heat radiator a short spaced distance from said planar front panel, elastic resin between said metal heat radiator and spacer and said planar front panel and said planar transparent panel and elastically sealing said heat radiator to said planar front panel and to said planar transparent panel to form a closed sealed liquid retaining chamber, and transparent coolant selected from the group of water, benzyl alcohol, methyl benzoate, ethyl benzoate, diethyl oxalate, dibuthyl phthalate, ethylene glycol, and mixtures thereof, filling the sealed liquid retaining chamber.
Claim 3
Dependent Claim
21 words
A liquid cooled cathode ray tube according to claim 1 wherein said metal heat radiator is formed with heat radiating fins.
Claim 4
Dependent Claim
23 words
A cathode ray tube apparatus according to claim 1, wherein said metal radiator has attaching pieces to support said cathode ray tube apparatus.
Claim 5
Dependent Claim
29 words
A cathode ray tube apparatus according to claim 1, wherein said transparent coolant is a liquid having electric conductivity which is grounded to a chassis through said metal body.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-15 | 1989-01-14 | 1989-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-15 | 1993-01-14 | 1993-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-15 | 1997-01-14 | 1997-07-16 | $7700.00 | Window Closed / Lapsed |