US3351996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a rectangular-mask assembly for a shadow-mask type of color tube
Assignee: Rauland Borg Corp
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Filing: 1965-03-29
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Granted: 1967-11-14
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Expires: 1985-03-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Fiore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:58
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/14; H01J9/142; H01J2229/00; H01J2229/07; H01J2229/0722
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
THE METHOD OF MAKING A RECTANGULAR-MASK ASSEMBLY FOR A SHADOW-MASK TYPE OF COLOR TUBE WHICH COMPRISES: FORMING A RECTANGULARLY SHAPED MASK WHICH HAS A PATTERM OF APERTURES DISPOSED OVER A SUBSTANTIALLY SPHERICAL SECTION BORDERED BY A MOUNTING SKIRT DISPOSED ABOUT THE PERIPHERY OF AND EXTENDING NORMAL TO SAID SPHERICAL SECTION; STAMPING FROM A SHEET OF METAL, HAVING A THICKNESS MANY TIMES THAT OF SAID MASK, A RECTANGULARLY SHAPED ANNULAR FRAME HAVING PRINCIPAL DIMENSIONS LARGE COMPARED TO SAID SPHERICAL SECTION AND HAVING AN OUTER EDGE CONTOURED TO CORRESPOND TO THE PERIPHERAL CONTOUR OF SAID SPHERICAL SECTION; FOLDING SAID OUTER EDGE NORMAL TO THE PLANE OF SAID FRAME TO PROVIDE A MOUNTING SKIRT OF RECTANGULAR SHAPE HAVING PREDETERMINED DIMENSIONS FOR TELESCOPING WITH SAID MOUNTING SKIRT OF SAID MASK; HEATING SAID FRAME TO A TEMPERATURE THAT IS HIGH COMPARED TO THE OPERATING TEMPERATURE OF SAID FRAME WHEN INCLUDING WITHIN SAID OPERATING COLOR TUBE TO STRESS RELIEVE SAID FRAME; RESTRIKING SAID FRAME TO RESTORE SAID PREDETERMINED DIMENSIONS; ASSEMBLING SAID MASK TO SAID STRESS-RELIEVED AND RESTRUCK FRAME WITH SAID MOUNTING SKIRTS IN TELESCOPING RELATION; AND MECHANICALLY SECURING SAID SKIRTS TO ONE ANOTHER.
Claim 2
Independent Claim
187 words
THE METHOD OF MAKING A RECTANGULAR-MASK ASSEMBLY FOR A SHADOW-MASK TYPE OF COLOR TUBE WHICH COMPRISES: FORMING A RECTANGULARLY SHAPED MASK WHICH HAS A PATTERM OF APERTURES DISPOSED OVER A SUBSTANTIALLY SPHERICAL SECTION BORDERED BY A MOUNTING SKIRT DISPOSED ABOUT THE PERIPHERY OF AND EXTENDING NORMAL TO SAID SPHERICAL SECTION; STAMPING FROM A SHEET OF METAL, HAVING A THICKNESS MANY TIMES THAT OF SAID MASK, A RECTANGULARLY SHAPED ANNULAR FRAME HAVING PRINCIPAL DIMENSIONS LARGE COMPARED TO SAID SPHERICAL SECTION AND HAVING AN OUTER EDGE CONTOURED TO CORRESPOND TO THE PERIPHERAL CONTOUR OF SAID SPHERICAL SECTION; FOLDING SAID OUTER EDGE NORMAL TO THE PLANE OF SAID FRAME TO PROVIDE A MOUNTING SKIRT OF RECTANGULAR SHAPE HAVING PREDETERMINED DIMENSIONS FOR TELESCOPING WITH SAID MOUNTING SKIRT OF SAID MASK; HEATING SAID FRAME TO A TEMPERATURE THAT IS HIGH COMPARED TO THE OPERATING TEMPERATURE OF SAID FRAME WHEN INCLUDING WITHIN SAID OPERATING COLOR TUBE TO STRESS RELIEVE SAID FRAME; RESTRIKING SAID FRAME TO RESTORE SAID PREDETERMINED DIMENSIONS; ASSEMBLING SAID MASK TO SAID STRESS-RELIEVED AND RESTRUCK FRAME WITH SAID MOUNTING SKIRTS IN TELESCOPING RELATION; AND MECHANICALLY SECURING SAID SKIRTS TO ONE ANOTHER.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |