Patent US4329620A successfully refreshed from Google Patents.
US4329620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray tube with light transparent panel and adhesive therefor
Assignee: Raytheon Co
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Filing: 1979-02-23
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Granted: 1982-05-11
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Expires: 1999-02-23
Abstract
Abstract An electron discharge device including a cathode ray tube having an evacuated envelope terminated at one end in a faceplate to which a transparent panel is bonded by an interposed adhesive layer of stabilized light-transmissive material comprising a mixture of epoxy resin and a hygroscopic curing agent having a predetermined quantity of water added thereto prior to mixing with the resin.
Inventors
- 👤 Ralph L. Lanciano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:01
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; C; C09; C09J; C09J163/00; C08; C08L; C08L2666/00; C08L2666/54
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
80 words
A device comprising: a body having a viewable portion; a light transmissive layer of gelled adhesive material having a surface bonded to the viewable portion of the body and having an opposing surface, the gelled adhesive material comprising a mixture of transparent epoxy resin, a hygroscopic transparent curing agent, and a light transmission stabilizing agent consisting of a predetermined additive quantity of water; and a transparent laminate disposed over the light transmissive layer and bonded to the opposing surface thereof.
Claim 2
Independent Claim
80 words
A device comprising: a body having a viewable portion; a light transmissive layer of gelled adhesive material having a surface bonded to the viewable portion of the body and having an opposing surface, the gelled adhesive material comprising a mixture of transparent epoxy resin, a hygroscopic transparent curing agent, and a light transmission stabilizing agent consisting of a predetermined additive quantity of water; and a transparent laminate disposed over the light transmissive layer and bonded to the opposing surface thereof.
Claim 3
Dependent Claim
18 words
A device as set forth in claim 1 wherein the epoxy resin includes a multi-functional base epoxy resin.
Claim 4
Dependent Claim
16 words
A device as set forth in claim 2 wherein the base epoxy resin comprises bisphenol-A epichlorohydrin.
Claim 5
Dependent Claim
17 words
A device as set forth in claim 3 wherein the epoxy resin includes a modifier epoxy resin.
Claim 6
Dependent Claim
14 words
A device as set forth in claim 4 wherein the modifier comprises polyglycol epoxide.
Claim 7
Dependent Claim
17 words
A device as set forth in claim 1 wherein the curing agent comprises an acid type hardener.
Claim 8
Dependent Claim
18 words
A device as set forth in claim 6 wherein the acid type curing agent is boron trifluoride etherate.
Claim 9
Dependent Claim
17 words
A device as set forth in claim 1 wherein the curing agent comprises a base type hardener.
Claim 10
Dependent Claim
18 words
A device as set forth in claim 8 wherein the base type hardener is an amine epoxy hardener.
Claim 11
Dependent Claim
90 words
An electron discharge device including: an evacuated envelope provided with a radiation transparent portion having an outer surface; a radiation transparent panel disposed adjacent the outer surface of the radiation transparent portion and aligned therewith; and a radiation transmissive layer of gelled adhesive material having respective opposing surfaces bonded to the outer surface of the radiation transparent portion and to the panel, the gelled adhesive material comprising a mixture of epoxy resin, a hygroscopic curing agent, and a radiation transmission stabilizing agent consisting of a predetermined additive quantity of water.
Claim 12
Dependent Claim
90 words
An electron discharge device including: an evacuated envelope provided with a radiation transparent portion having an outer surface; a radiation transparent panel disposed adjacent the outer surface of the radiation transparent portion and aligned therewith; and a radiation transmissive layer of gelled adhesive material having respective opposing surfaces bonded to the outer surface of the radiation transparent portion and to the panel, the gelled adhesive material comprising a mixture of epoxy resin, a hygroscopic curing agent, and a radiation transmission stabilizing agent consisting of a predetermined additive quantity of water.
Claim 13
Dependent Claim
20 words
An electron discharge device as set forth in claim 10 wherein the epoxy resin comprises a light transmissive epoxy resin.
Claim 14
Dependent Claim
19 words
An electron discharge device as set forth in claim 11 wherein the light transmissive epoxy resin includes bisphenol-A epichlorohydrin.
Claim 15
Dependent Claim
19 words
An electron discharge device as set forth in claim 10 wherein the curing agent comprises a boron trifluoride compound.
Claim 16
Dependent Claim
18 words
An electron discharge device as set forth in claim 10 wherein the curing agent is boron trifluoride etherate.
Claim 17
Dependent Claim
98 words
A cathode ray tube including: an evacuated envelope provided with a light-transparent faceplate portion having an outer surface; an imaging screen disposed within the envelope and adjacent the faceplate portion; a light-transparent panel disposed adjacent the outer surface of the faceplate portion and aligned therewith; and a light-transmissive layer of gelled adhesive material having respective opposing surfaces bonded to the outer surface of the faceplate portion and to the panel; the gelled adhesive material comprising a mixture of epoxy resin, a hygroscopic curing agent, and a light transmission stabilizing agent consisting of a predetermined additive quantity of water.
Claim 18
Dependent Claim
98 words
A cathode ray tube including: an evacuated envelope provided with a light-transparent faceplate portion having an outer surface; an imaging screen disposed within the envelope and adjacent the faceplate portion; a light-transparent panel disposed adjacent the outer surface of the faceplate portion and aligned therewith; and a light-transmissive layer of gelled adhesive material having respective opposing surfaces bonded to the outer surface of the faceplate portion and to the panel; the gelled adhesive material comprising a mixture of epoxy resin, a hygroscopic curing agent, and a light transmission stabilizing agent consisting of a predetermined additive quantity of water.
Claim 19
Dependent Claim
22 words
A cathode ray tube as set forth in claim 15 wherein the epoxy resin includes a multi-function base resin and a modifier.
Claim 20
Dependent Claim
17 words
A cathode ray tube as set forth in claim 16 wherein the base resin includes bisphenol-A epichlorohydrin.
Claim 21
Dependent Claim
18 words
A cathode ray tube as set forth in claim 15 wherein the curing agent comprises boron trifluoride etherate.
Claim 22
Dependent Claim
18 words
A cathode ray tube as set forth in claim 15 wherein the curing agent comprises an amine hardener.
Claim 23
Dependent Claim
17 words
A cathode ray tube as set forth in claim 15 wherein the water is chemically pure water.
Claim 24
Dependent Claim
26 words
A cathode ray tube as set forth in claim 15 wherein the curing agent comprises about six to ten percent by weight of the epoxy resin.
Claim 25
Dependent Claim
25 words
A cathode ray tube as set forth in claim 15 wherein the water comprises about two to five percent by weight of the curing agent.
References Cited (Backward Citations)
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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) | 1985-05-10 | 1985-11-09 | 1986-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-10 | 1989-11-09 | 1990-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-10 | 1993-11-09 | 1994-05-11 | $7700.00 | Window Closed / Lapsed |