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US3838985A
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Composite three layer metal thermostat
Assignee: Texas Instruments Inc
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Filing: 1973-06-08
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Granted: 1974-10-01
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Expires: 1993-06-08
Abstract
Abstract A support arrangement for the shadow mask in a color television tube of slim design is shown to include a plurality of support members formed of a low cost thermostat metal embodying only iron alloy materials, which thermostat metal displays high strength and corrosion resistance at elevated temperatures and displays low flexivity and stable thermal response properties, the thermostat metal having outer metal layers of approximately equal thickness formed of nickel-chromium-iron and nickel-iron alloys respectively and having an intermediate layer of selected stainless steel comprising between 45 and 65 percent of the total thickness of the thermostat metal providing the thermostat metal with a flexivity in the range from 90 to 110 in the temperature range from room temperature up to about 350*F.
Inventors
- 👤 J Ornstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:09
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/06; H01J29/07; H01J29/073; H01H; H01H37/00; H01H37/02; H01H37/32; H01H37/52; H01H2037/528; H01J2229/00; H01J2229/07; H01J2229/0722; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/925; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/125; Y10T428/12507; Y10T428/1266
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
236 words
A COMPOSITE THREE-LAYER THERMOSTAT METAL METERIAL COMPRISING AN OUTER LAYER OF SELECTED THICKNESS OF A METAL HAVING A NOMINAL COMPOSITION BY WEIGHT A NICKEL, 3 PERCENT CHROMIUM AND THE BALANCE IRON, ANTOHER OUTER LAYER OF APPROXIMATELY EQUAL THICKNESS OF A METAL ALLOY HAVING A NOMINAL COMPOSITION BY WEIGHT OF ABOUT 36 PERCENT NICKEL AND THE BALANCE IRON, AND AN INTERMEDIATE LAYER OF A METAL ALLOY SELECTED FROM THE GROUP CONSISTING OF AN ALLOY HAVING A NOMINAL COMPOSITION BY WEIGHT OF 0.05 PERCENT (MAX.) CARBON, 1.00 PERCENT (MAX.) MANGANESE, 1.00 PERCENT (MAX.) SILICON, 10.00 TO 12.00 PERCENT CHROMIUM, 0.50 PERCENT TITANIUM, AND THE BALANCE IRON, AN ALLOY HAVING A NOMINAL COMPOSITION BY WEIGHT OF 0.08 PERCENT (MAX.) CARBON, 1.00 PERCENT (MAX.) MANGANESE, 1.00 PERCENT (MAX.) SILICON, 0.030 PERCENT (MAX.) SULFUR, 11.50 TO 14.50 PERCENT CHEOMIUM, 0.10 TO 0.30 PERCENT ALUMINUM AND THE BALANCE IRON, AND AN ALLOY HAVING A NOMINAL COMPOSITION BY WEIGHT OF 0.15 PERCENT (MAX.) SILICON, 1.00 PERCENT (MAX.) MANGANESE, 1.00 PERCENT (MAX.) SILICON 0.030 PERCENT (MAX.) SULFUR, 11.50 TO 13.50 PERCENT CHROMIUM, AND THE BALANCE IRON, SAID INTERMEDIATE METAL LAYER BEING DISPOSED BETWEEN AND A METALLURGICALLY BONDED TO SAID OUTER METAL LAYERS AND HAVING A THICKNESS COMPRISING FROM ABOUT 45 TO 65 PERCENT OF THE TOTAL THICKNESS OF THE COMPOSITE MATERIAL PROVIDING THE COMPOSITE MATERIAL WITH A FLEXIVITY OF ABOUT 90 TO 110 IN THE TEMPERATURE RANGE FROM ROOM TEMPERATURE UP TO ABOUT 350*F.
Claim 2
Dependent Claim
236 words
A COMPOSITE THREE-LAYER THERMOSTAT METAL METERIAL COMPRISING AN OUTER LAYER OF SELECTED THICKNESS OF A METAL HAVING A NOMINAL COMPOSITION BY WEIGHT A NICKEL, 3 PERCENT CHROMIUM AND THE BALANCE IRON, ANTOHER OUTER LAYER OF APPROXIMATELY EQUAL THICKNESS OF A METAL ALLOY HAVING A NOMINAL COMPOSITION BY WEIGHT OF ABOUT 36 PERCENT NICKEL AND THE BALANCE IRON, AND AN INTERMEDIATE LAYER OF A METAL ALLOY SELECTED FROM THE GROUP CONSISTING OF AN ALLOY HAVING A NOMINAL COMPOSITION BY WEIGHT OF 0.05 PERCENT (MAX.) CARBON, 1.00 PERCENT (MAX.) MANGANESE, 1.00 PERCENT (MAX.) SILICON, 10.00 TO 12.00 PERCENT CHROMIUM, 0.50 PERCENT TITANIUM, AND THE BALANCE IRON, AN ALLOY HAVING A NOMINAL COMPOSITION BY WEIGHT OF 0.08 PERCENT (MAX.) CARBON, 1.00 PERCENT (MAX.) MANGANESE, 1.00 PERCENT (MAX.) SILICON, 0.030 PERCENT (MAX.) SULFUR, 11.50 TO 14.50 PERCENT CHEOMIUM, 0.10 TO 0.30 PERCENT ALUMINUM AND THE BALANCE IRON, AND AN ALLOY HAVING A NOMINAL COMPOSITION BY WEIGHT OF 0.15 PERCENT (MAX.) SILICON, 1.00 PERCENT (MAX.) MANGANESE, 1.00 PERCENT (MAX.) SILICON 0.030 PERCENT (MAX.) SULFUR, 11.50 TO 13.50 PERCENT CHROMIUM, AND THE BALANCE IRON, SAID INTERMEDIATE METAL LAYER BEING DISPOSED BETWEEN AND A METALLURGICALLY BONDED TO SAID OUTER METAL LAYERS AND HAVING A THICKNESS COMPRISING FROM ABOUT 45 TO 65 PERCENT OF THE TOTAL THICKNESS OF THE COMPOSITE MATERIAL PROVIDING THE COMPOSITE MATERIAL WITH A FLEXIVITY OF ABOUT 90 TO 110 IN THE TEMPERATURE RANGE FROM ROOM TEMPERATURE UP TO ABOUT 350*F.
Claim 3
Dependent Claim
52 words
A thermostat metal material as set forth in claim 1 wherein said intermediate metal layer has a thickness comprising about 55 percent of the total thickness of the composite material providing the thermostat metal material with a flexivity of about 100 in the temperature range from room temperature up to about 350*F.
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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |