US3131920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sectionalized crucible
Assignee: General Electric Co
•
Filing: 1962-04-02
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Granted: 1964-05-05
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Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 Gerald E Reinker
- 👤 Jr Henry G Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:10
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/06; C03B5/08; C03B5/02; C03B5/033; C03B5/0334
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A SECTIONAL GRAPHITE CRUCIBLE FOR THE FUSION OF CRYSTALLINE QUARTZ COMPRISING A BASE MEMBER AND A SIDE WALL UPSTANDING ON SAID BASE MEMBER, SAID SIDE WALL COMPRISING A PLURALITY OF INTERENGAGED LONGITUDINALLY EXTENDING SECTIONS JOINED TOGETHER ALONG THEIR LONGITUDINAL EDGES BY EXPANSIBLE RABBET JOINTS AND A RETAINING MEMBER SUPERPOSED ON THE INTERENGAGED SIDE WALL SECTIONS, SAID BASE MEMBER AND SAID RETAINING MEMBER HAVING INTEGRAL FLANGES OVERLAPPING THE INTERENGAGED SIDE WALL SECTIONS, SAID FLANGES BEING SPACED OUTWARDLY FROM SAID SIDE WALL SECTIONS WHEN THE JOINTS BETWEEN SAID SIDE WALL SECTIONS ARE COMPLETELY CLOSED TO PROVIDE SPACE FOR LIMITED EXPANSION OF THE RABBET JOINTS BETWEEN SAID WALL SECTIONS AND OUTWARD MOVEMENT OF SAID WALL SECTIONS ON EXPANSION OF QUARTZ CRYSTALS HEATED IN THE CRUCIBLE, SAID FLANGES BEING ADAPTED FOR CLOSELY FITTING ABOUT THE INTERENGAGED SIDE WALL SECTIONS, WHEN SAID JOINTS ARE EXPANDED AND SAID SIDE WALL SECTIONS MOVE INTO SAID EXPANSION SPACE, TO MAINTAIN THE CONTINUITY OF THE SIDE WALL CIRCUMFERENTIALLY FOR CONTAINING MOLTEN FUSED QUARTZ WITHIN THE CRUCIBLE.
Claim 2
Dependent Claim
167 words
A SECTIONAL GRAPHITE CRUCIBLE FOR THE FUSION OF CRYSTALLINE QUARTZ COMPRISING A BASE MEMBER AND A SIDE WALL UPSTANDING ON SAID BASE MEMBER, SAID SIDE WALL COMPRISING A PLURALITY OF INTERENGAGED LONGITUDINALLY EXTENDING SECTIONS JOINED TOGETHER ALONG THEIR LONGITUDINAL EDGES BY EXPANSIBLE RABBET JOINTS AND A RETAINING MEMBER SUPERPOSED ON THE INTERENGAGED SIDE WALL SECTIONS, SAID BASE MEMBER AND SAID RETAINING MEMBER HAVING INTEGRAL FLANGES OVERLAPPING THE INTERENGAGED SIDE WALL SECTIONS, SAID FLANGES BEING SPACED OUTWARDLY FROM SAID SIDE WALL SECTIONS WHEN THE JOINTS BETWEEN SAID SIDE WALL SECTIONS ARE COMPLETELY CLOSED TO PROVIDE SPACE FOR LIMITED EXPANSION OF THE RABBET JOINTS BETWEEN SAID WALL SECTIONS AND OUTWARD MOVEMENT OF SAID WALL SECTIONS ON EXPANSION OF QUARTZ CRYSTALS HEATED IN THE CRUCIBLE, SAID FLANGES BEING ADAPTED FOR CLOSELY FITTING ABOUT THE INTERENGAGED SIDE WALL SECTIONS, WHEN SAID JOINTS ARE EXPANDED AND SAID SIDE WALL SECTIONS MOVE INTO SAID EXPANSION SPACE, TO MAINTAIN THE CONTINUITY OF THE SIDE WALL CIRCUMFERENTIALLY FOR CONTAINING MOLTEN FUSED QUARTZ WITHIN THE CRUCIBLE.
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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |