US2722085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of sealing an iron cone to a glass window
Assignee: Hartford National Bank and Trust Co
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Filing: 1951-11-06
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Granted: 1955-11-01
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Expires: 1971-11-06
Abstract
No abstract record available.
Inventors
- 👤 Gier Johannes De
- 👤 Hagenberg Theodorus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:18
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/04; C03C27/042; C03C27/046; H; H01; H01J; H01J9/00; H01J9/24; H01J9/26; H01J9/263
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A METHOD OF SEALING A GLASS PART TO A CHROMIUMNICKEL-COATED SEALING EDGE OF AN IRON CONE OF A CATHODE RAY TUBE COMPRISING THE STEPS OF HEATING THE SEALING EDGE IN AN OXIDIZING ATMOSPHERE AT AN ELEVATED TEMPERATURE AND FOR A TIME INTERVAL AT WHICH SUBSTANTIALLY NO DIFFUSION WILL OCCUR BETWEEN THE COATING AND THE IRON AND AT A TEMPERATURE SUBSTANTIALLY ABOVE THAT AT WHICH SEALING BETWEEN A GLASS PART AND THE CONE WILL SUBSEQUENTLY OCCUR IN ORDER TO DEGASIFY THE SEALING EDGE OF THE CONE, THEREAFTER COOLING THE CONE TO AN ELEVATED TEMPERATURE AT WHICH A SEAL CAN BE AFFECTED BETWEEN THE CONE AND A GLASS PART WITHOUT INJURING THE GLASS, THEREAFTER PLACING THE GLASS PART IN CONTACT WITH THE SEALING EDGE AND FORMING A SEAL THEREBETWEEN WHILE THE SEALING EDGE IS STILL AT AN ELEVATED TEMPERATURE, AND COOLING THE CONE WITH THE GLASS PART SEALED THERETO TO RELIEVE STRAIN IN THE GLASS PART.
Claim 2
Independent Claim
154 words
A METHOD OF SEALING A GLASS PART TO A CHROMIUMNICKEL-COATED SEALING EDGE OF AN IRON CONE OF A CATHODE RAY TUBE COMPRISING THE STEPS OF HEATING THE SEALING EDGE IN AN OXIDIZING ATMOSPHERE AT AN ELEVATED TEMPERATURE AND FOR A TIME INTERVAL AT WHICH SUBSTANTIALLY NO DIFFUSION WILL OCCUR BETWEEN THE COATING AND THE IRON AND AT A TEMPERATURE SUBSTANTIALLY ABOVE THAT AT WHICH SEALING BETWEEN A GLASS PART AND THE CONE WILL SUBSEQUENTLY OCCUR IN ORDER TO DEGASIFY THE SEALING EDGE OF THE CONE, THEREAFTER COOLING THE CONE TO AN ELEVATED TEMPERATURE AT WHICH A SEAL CAN BE AFFECTED BETWEEN THE CONE AND A GLASS PART WITHOUT INJURING THE GLASS, THEREAFTER PLACING THE GLASS PART IN CONTACT WITH THE SEALING EDGE AND FORMING A SEAL THEREBETWEEN WHILE THE SEALING EDGE IS STILL AT AN ELEVATED TEMPERATURE, AND COOLING THE CONE WITH THE GLASS PART SEALED THERETO TO RELIEVE STRAIN IN THE GLASS PART.
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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) | 1958-10-31 | 1959-05-02 | 1959-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-31 | 1963-05-02 | 1963-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-31 | 1967-05-02 | 1967-11-01 | $7700.00 | Window Closed / Lapsed |