US3320352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quartz-to-metal seal
Assignee: General Electric Co
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Filing: 1964-09-29
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Granted: 1967-05-16
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Expires: 1984-09-29
Abstract
No abstract record available.
Inventors
- 👤 Delmar D Kershaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:07
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/02; H; H01; H01J; H01J5/00; H01J5/32; Y; Y10; Y10S; Y10S228/00; Y10S228/903; Y10S285/00; Y10S285/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A SEALED VITREOUS ELECTEC DEVICE HAVING A HIGH PRESSURE RESISTANT STEM SEALED THERETO COMPRISING A VITREOUS OUTER STEM TUBE, A ROD CONDUCTOR EXTENDING THROUGH SAID TUBE, AN ELONGATED METAL THIMBLE ENCIRCLING SAID ROD, SAID ROD EXTENDING THROUGH SAID THIMBLE AND BEING HERMETICALLY JOINED THERETO AT ITS CLOSED END, SAID THIMBLE HAVING ITS OPEN END FACING IN THE DIRECTION OF THE INNER END OF SAID STEM WHICH IS SEALED TO SAID ELECTRICAL DEVICE, THE OPEN END OF SAID THIMBLE HAVING A FEATHERED EDGE SEALED TO SAID OUTER STEM TUBE, AND A CAPILLARY VITREOUS PORTION WITHIN SAID OUTER STEM TUBE AT ITS INNER END HAVING AN APERTURE THERETHROUGH THROUGH WHICH SAID ROD EXTENDS.
Claim 2
Dependent Claim
111 words
A SEALED VITREOUS ELECTEC DEVICE HAVING A HIGH PRESSURE RESISTANT STEM SEALED THERETO COMPRISING A VITREOUS OUTER STEM TUBE, A ROD CONDUCTOR EXTENDING THROUGH SAID TUBE, AN ELONGATED METAL THIMBLE ENCIRCLING SAID ROD, SAID ROD EXTENDING THROUGH SAID THIMBLE AND BEING HERMETICALLY JOINED THERETO AT ITS CLOSED END, SAID THIMBLE HAVING ITS OPEN END FACING IN THE DIRECTION OF THE INNER END OF SAID STEM WHICH IS SEALED TO SAID ELECTRICAL DEVICE, THE OPEN END OF SAID THIMBLE HAVING A FEATHERED EDGE SEALED TO SAID OUTER STEM TUBE, AND A CAPILLARY VITREOUS PORTION WITHIN SAID OUTER STEM TUBE AT ITS INNER END HAVING AN APERTURE THERETHROUGH THROUGH WHICH SAID ROD EXTENDS.
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) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |