Patent DE1276684B successfully refreshed from Google Patents.
US3041133A
Expired / Lapsed
US
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Method and apparatus for preventing breakage of liners
Assignee: Texas Instruments Inc
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Filing: 1960-09-27
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Granted: 1962-06-26
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Expires: 1980-09-27
Abstract
No abstract record available.
Inventors
- 👤 Hicks John Edwin
- 👤 Sigler John Elmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:55
CPC Classifications
C; C22; C22B; C22B41/00; C30; C30B; C30B15/00; C30B15/10; F; F27; F27D; F27D21/00; F27D21/0021; Y; Y10; Y10S; Y10S117/00; Y10S117/915
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
THE METHOD OF PREVENTING THE BREAKAGE OF A QUARTZ LINER DURING COOLING, SAID CRUCIBLE HAVING AN APERTURE AT THE BOTTOM THEREOF, SAID LINER HAVING AN ANNULAR LIP AT THE BOTTOM THEREOF ENCLOSING AN APERTURE EXTENDING INTO THE APERTURE OF SAID CRUCIBLE, SAID LIP BEING POSITIONED IN SPACED RELATION WITH THE WALL OF SAID CRUCIBLE, WHICH INCLUDES THE STEPS OF INTRODUCTING PRESSURIZED GAS BETWEEN SAID CRUCIBLE AND SAID LINER THROUGH THE SPACE BETWEEN SAID CRUCIBLE WALL AND SAID ANNULAR LIP, WHEREBY THE GAS, WORKING ITS WAY BETWEEN THE LINER AND THE CRUCIBLE, GENTLY
References Cited (Backward Citations)
US2872299A
Cited
US2879189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-25 | 1965-12-25 | 1966-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-25 | 1969-12-25 | 1970-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-25 | 1973-12-25 | 1974-06-26 | $7700.00 | Window Closed / Lapsed |