US3701193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of assembling and mounting an aperture mask in a mask-panel assembly of a cathode-ray tube using a full surface spacer
Assignee: RCA Licensing Corp
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Filing: 1971-03-05
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Granted: 1972-10-31
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Expires: 1991-03-05
Abstract
Abstract The method includes supporting a panel of a cathode-ray tube in a given position, placing on the inner surface of the faceplate a flexible spacer having a predetermined thickness related to the desired spacing q between an aperture mask to be assembled with the panel and the faceplate, and then, placing the mask against the flexible spacer. The spacer is forced against the inner surface of the faceplate and the mask is forced against the spacer. The mask, frame and frame supports are assembled and detachably mounted on the studs of the panel. In a particular form of the method, the mask is detachably mounted in the panel by welding the support members to the frame and by welding the mask to the frame while maintaining the mask conformed to the desired contour at the desired spacing q.
Inventors
- 👤 Frank Rowland Ragland Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:40
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/06; H01J29/07; H01J29/073; H01J2229/00; H01J2229/07; H01J2229/0727; H01J2229/0766; H01J2229/0772
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
195 words
In the manufacture of a cathode-ray tube mask-panel assembly including a panel having a contoured faceplate and sidewalls, at least three support studs extending from said sidewall, a frame assembly including a frame and frame support members, and an aperture mask having an apertured portion attached to the frame, the method of mounting and assembling the mask in said panel comprising the steps of a. supporting a panel in a given position, b. placing on the inner surface of said faceplate panel a flexible spacer having a predetermined thickness related to a prescribed spacing between said mask to be assembled and said faceplate, said spacer having surface dimensions at least the same size as that of the apertured portion of said mask, c. then, placing said mask loosely in surface contact against said spacer, d. forcing substantially the entire surface of said spacer into substantial contact against said contoured faceplate, e. forcing substantially the entire surface of said mask into substantial contact with said spacer, and f. then, detachably mounting and permanently assembling said mask, said frame and said frame supports on said studs of said panel while continuing said forcing steps (d) and (e).
Claim 2
Dependent Claim
195 words
In the manufacture of a cathode-ray tube mask-panel assembly including a panel having a contoured faceplate and sidewalls, at least three support studs extending from said sidewall, a frame assembly including a frame and frame support members, and an aperture mask having an apertured portion attached to the frame, the method of mounting and assembling the mask in said panel comprising the steps of a. supporting a panel in a given position, b. placing on the inner surface of said faceplate panel a flexible spacer having a predetermined thickness related to a prescribed spacing between said mask to be assembled and said faceplate, said spacer having surface dimensions at least the same size as that of the apertured portion of said mask, c. then, placing said mask loosely in surface contact against said spacer, d. forcing substantially the entire surface of said spacer into substantial contact against said contoured faceplate, e. forcing substantially the entire surface of said mask into substantial contact with said spacer, and f. then, detachably mounting and permanently assembling said mask, said frame and said frame supports on said studs of said panel while continuing said forcing steps (d) and (e).
Claim 3
Dependent Claim
40 words
The method of claim 1 including the additional steps of g. discontinuing said forcing steps (d) and (e), h. removing said mask and said spacer from said panel, and i. remounting said mask in said panel in said mounted position.
Claim 4
Dependent Claim
104 words
The method of claim 2 wherein said support members include at least three hook plates preassembled with said frame and a corresponding number of leaf springs each having a hole in one end, the steps between step (b) and step (c) comprising j. placing a frame preassembled with at least three hook plates in said panel oriented with said masks, and k. placing one leaf spring corresponding to each of said hook plates on said panel by engaging the hole in one end with a stud and frictionally engaging the other end with said hook plate to detachably moUnt said mask on said panel.
Claim 5
Dependent Claim
46 words
The method of claim 3 wherein said mounting step comprises i. welding each of said leaf springs to said corresponding hook plate to detachably mount said frame in said panel, and ii. welding said mask to said frame to detachably mount said mask in said panel.
Claim 6
Dependent Claim
32 words
The method of claim 3 wherein said frame is preassembled with said support members, said mounting step comprising welding said mask to said frame to detachably mount said mask in said panel.
Claim 7
Dependent Claim
137 words
The method of claim 1 wherein said flexible spacer has a first set of connecting channels in the surface in contact with the inside surface of said faceplate, including prior to step (f) and additional steps of i. placing a flexible sheet member having a second set of connecting channels loosely on said mask with said second set of channels in contact with said mask, said sheet member the same size as said apertured portion of said mask, ii. applying a vacuum to a first set of connecting channels on said spacer to force said spacer into substantially full surface contact with said inner surface of said faceplate, and iii. applying a vacuum to a second set of connecting channels in said flexible sheet member to force said mask into substantially full surface contact with said spacer.
Claim 8
Dependent Claim
24 words
The method of claim 6 wherein said frame is preassembled with said support members, said mounting step comprises welding said mask to said frame.
Claim 9
Dependent Claim
57 words
The method of claim 6 wherein said first set of connected channels is equally spaced over said faceplate surface and said second set of connecting channels is equally spaced over said apertured surface of said mask when said spacer is positioned between said mask and said faceplate and said flexible sheet member is positioned against said mask.
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) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |