US3555663A
Expired / Lapsed
US
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Method of making an annular glass-to-metal joint
Assignee: United States Department of the Navy
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Filing: 1968-12-09
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Granted: 1971-01-19
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Expires: 1988-12-09
Abstract
Abstract A GLASS-TO-METAL JOINT FOR USE UNDER EXTREME PRESSURE WHEREIN THE ABUTTING GLASS EDGE IS GROUNDED TO A RADIUS EQUAL TO ONE-HALF THE THICKNESS OF THE GLASS, FIRE-POLISHED AND FITTED INTO A MATING GROOVE PROVIDED IN A REINFORCED PLASTIC BAND ATTACHED TO THE EDGE OF THE METAL ELEMENT. THIS STRUCTURE IS USED IN JOINING A GLASS HEMISPHERE TO A STEEL CYLINDER IN A SUBMERSIBLE.
Inventors
- 👤 Willis R Forman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:00
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/54; E06B3/58; E06B3/62; B; B63; B63B; B63B3/00; B63B3/13; E06B2003/6238; E06B2003/6244; E06B2003/625; E06B2003/6258; E06B2003/627; E06B2003/6273; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49893
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |