US2664180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quartz-to-metal seal
Assignee: General Electric Co
•
Filing: 1948-05-01
•
Granted: 1953-12-29
•
Expires: 1968-05-01
Abstract
No abstract record available.
Inventors
- 👤 Leo R Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:56
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/32; H01J5/40; H01J5/42; H01J2893/00; H01J2893/0033; H01J2893/0034; Y; Y10; Y10T; Y10T403/00; Y10T403/21; Y10T403/217
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A STEM COMPRISING A VITREOUS SUPPORT, A METAL ROD EXTENDING THROUGH SAID SUPPORT, A METAL DISC HERMETICALLY UNITED WITH SAID ROD AND SAID SUPPORT, SAID ROD BEING OF A METAL FROM THE GROUP CONSISTING OF TUNGSTEN AND MOLYBDEMUM; AND SAID DISC HEING OF THE OTHER METAL OF SADI GROUP, SAID DISC HAIVNG A BELLOWS PORTION FOR RELIEVING RADIAL STRAIN IN DISC, AND METAL CUPS ON OPSAID STEM AND ABOUT SAID BELLOWS PORTION FOR FREE FLEXING OF THE LATTER.
Claim 2
Dependent Claim
78 words
A STEM COMPRISING A VITREOUS SUPPORT, A METAL ROD EXTENDING THROUGH SAID SUPPORT, A METAL DISC HERMETICALLY UNITED WITH SAID ROD AND SAID SUPPORT, SAID ROD BEING OF A METAL FROM THE GROUP CONSISTING OF TUNGSTEN AND MOLYBDEMUM; AND SAID DISC HEING OF THE OTHER METAL OF SADI GROUP, SAID DISC HAIVNG A BELLOWS PORTION FOR RELIEVING RADIAL STRAIN IN DISC, AND METAL CUPS ON OPSAID STEM AND ABOUT SAID BELLOWS PORTION FOR FREE FLEXING OF THE LATTER.
References Cited (Backward Citations)
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-28 | 1957-06-29 | 1957-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-28 | 1961-06-29 | 1961-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-28 | 1965-06-29 | 1965-12-29 | $7700.00 | Window Closed / Lapsed |