Patent EP0194031A1 successfully refreshed from Google Patents.
US4482579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for supplying viscous material
Assignee: Sony Corp
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Filing: 1983-01-17
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Granted: 1984-11-13
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Expires: 2003-01-17
Abstract
Abstract For supplying frit slurry to the sealing surface of a funnel portion of a cathode ray tube, air under pressure, preferably saturated with a solvent for the frit slurry, is supplied to a vessel containing the frit slurry, and the latter is transported by the air under pressure out of an outlet of the vessel and through a hose or hoses for deposit on the sealing surface. The flow of frit slurry is regulated by a valve between the vessel outlet and the hoses. The frit slurry contained in the vessel is stirred continuously to maintain a substantially constant slurry viscosity as the slurry leaves the vessel outlet.
Inventors
- 👤 Makoto Fujii
- 👤 Akira Ikuzawa
- 👤 Edward C. Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:50
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/06; B; B05; B05C; B05C5/00; B05C5/02; B05C5/0208; B05C5/0212; B05C5/0216; H; H01; H01J; H01J9/00; H01J9/24; H01J9/26; H01J9/263
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
91 words
An apparatus for applying viscous material to a surface of an article comprising: supply means for providing a gas under pressure; saturating means for saturating said gas with a vaporized solvent for said viscous material to deter drying of the latter when exposed to the saturated gas under pressure; and containment means for containing said viscous material and to which said saturated gas under pressure is supplied, said containment means having an outlet through which said viscous material is forced by said saturated gas under pressure for application to said surface.
Claim 2
Independent Claim
91 words
An apparatus for applying viscous material to a surface of an article comprising: supply means for providing a gas under pressure; saturating means for saturating said gas with a vaporized solvent for said viscous material to deter drying of the latter when exposed to the saturated gas under pressure; and containment means for containing said viscous material and to which said saturated gas under pressure is supplied, said containment means having an outlet through which said viscous material is forced by said saturated gas under pressure for application to said surface.
Claim 3
Dependent Claim
34 words
An apparatus as in claim 1; wherein said containment means includes stirring means which substantially, continuously stir said viscous material to maintain a substantially constant viscosity of said viscous material forced through said outlet.
Claim 4
Dependent Claim
20 words
An apparatus as in claim 2; wherein said stirring means includes blades which are fully submerged in said viscous material.
Claim 5
Dependent Claim
35 words
An apparatus as in claim 3; further comprising duct means for supplying said viscous material therethrough to said surface of said article and which communicate at one end with said outlet of said containment means.
Claim 6
Dependent Claim
18 words
An apparatus as in claim 4; wherein said duct means have nozzle means at the other end thereof.
Claim 7
Dependent Claim
19 words
An apparatus as in claim 5; wherein said duct means includes a pair of hoses of substantially equal dimensions.
Claim 8
Dependent Claim
32 words
An apparatus as in claim 5; further comprising valve means actuable for halting the flow of said viscous material from said containment means outlet to said one end of said duct means.
Claim 9
Independent Claim
68 words
A method of applying a viscous material to a surface of an article which comprises the steps of: pressurizing a gas; saturating said gas with a solvent for said viscous material; and applying said saturated gas under pressure to a vessel containing said viscous material and having an outlet through which said viscous material is forced by said saturated gas under pressure for application to said sealing surface.
Claim 10
Independent Claim
68 words
A method of applying a viscous material to a surface of an article which comprises the steps of: pressurizing a gas; saturating said gas with a solvent for said viscous material; and applying said saturated gas under pressure to a vessel containing said viscous material and having an outlet through which said viscous material is forced by said saturated gas under pressure for application to said sealing surface.
Claim 11
Dependent Claim
11 words
A method as in claim 8; wherein said gas is air.
Claim 12
Dependent Claim
19 words
A method as in claim 9; wherein said solvent is isoamyl acetate and said viscous material is frit slurry.
Claim 13
Dependent Claim
20 words
A method as in claim 10; wherein said air is pressurized at approximately 25 to 30 pounds per square inch.
Claim 14
Dependent Claim
21 words
A method as in claim 11; wherein said frit slurry forced through said outlet has a viscosity of approximately 75,000 centipoises.
Claim 15
Dependent Claim
35 words
A method as in claim 10; further comprising substantially continuously stirring said frit slurry in said vessel adjacent said outlet to maintain a substantially constant viscosity of said frit slurry as forced through said outlet.
Claim 16
Dependent Claim
175 words
A method as in claim 13; wherein the frit slurry is applied in an atmosphere having a pressure less than the pressure of said pressurized air and to said sealing surface of the article through at least one duct which communicates, at one end, with said outlet and has a nozzle at its other end; and further comprising moving said nozzle in a predetermined path along said sealing surface between initial and terminal points, allowing the flow of said frit slurry through said outlet into said duct as said nozzle moves so that the frit slurry is discharged from said nozzle in said path from said initial point, and halting said flow of the frit slurry through said outlet into said duct prior to the arrival of said nozzle at said terminal point so that discharge of the frit slurry from said nozzle during the final incremental movement of the latter to said terminal point is effected by a gradual release of pressure within said at least one duct to said atmosphere through said nozzle.
Claim 17
Dependent Claim
38 words
A method as in claim 8; wherein said article is a funnel portion of a cathode ray tube having a sealing surface, and said viscous material is frit slurry applied to the sealing surface of the funnel portion.
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) | 1987-11-13 | 1988-05-14 | 1988-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-13 | 1992-05-14 | 1992-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-13 | 1996-05-14 | 1996-11-13 | $7700.00 | Window Closed / Lapsed |