US3770404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-to-glass-to-ceramic seal
Assignee: US CAPACITORS Inc A CORP OF
•
Filing: 1971-09-24
•
Granted: 1973-11-06
•
Expires: 1991-09-24
Abstract
Abstract A method of making a seal comprising a metal member bonded to a glass member, said glass member in turn bonded to a ceramic member, said glass member and said ceramic member being resistant to corrosive materials in the device being sealed, said metal member, glass member and ceramic member having compatible coefficients of thermal expansion.
Inventors
- 👤 E Koons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:28
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/08; H01G9/10; C; C03; C03C; C03C27/00; C03C27/04; C03C27/042; C03C27/044
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
47 words
The method of claim 1, including the further step of, prior to the step of closing the open end of the case, attaching weldable, solderable or brazable means to the ceramic portion of the metal-to-glass-to-ceramic seal, the means being substantially chemically inert with respect to the electrolyte.
Claim 2
Dependent Claim
22 words
The method of claim 2, wherein the weldable, solderable or brazable means is a metal containing means extending to adjacent the case.
Claim 3
Dependent Claim
35 words
The method of claim 3, wherein the step of joining the seal to the side wall of the case includes welding, soldering or brazing the metal containing means to the side wall of the case.
Claim 4
Dependent Claim
26 words
The method of claim 1, including the further step of, prior to the step of closing the open end of the case, metallizing the ceramic means.
Claim 5
Dependent Claim
63 words
The method of claim 1, including the further step of, prior to the step of closing the open end of the case, attaching to the ceramic portion of the glass-to-metal-to-ceramic seal weldable, solderable or brazable means substantially chemically inert with respect to the electrolyte, the means attached to the external surface of the seal during closing of the open end of the case.
Claim 6
Independent Claim
137 words
A method of making metal-to-glass-to-ceramic seal including the steps of providing an elongated metal means spaced from the side wall of and in an aperture of an apertured ceramic means and a sufficient quantity of glass to substantially completely fill space between the elongated metal means and the side wall of the aperture of the apertured ceramic means, causing the glass to flow to fill the space between the elongated metal means and the side wall of the ceramic means at a temperature below the temperature at which the elongated metal means and the ceramic means flow, bonding the glass to the elongated metal means and the side wall of the aperture of the apertured ceramic means to form a metal-to-glass-to-ceramic seal, and attaching weldable, solderable or brazable means to the ceramic portion of the metal-to-glass-to-ceramic seal.
Claim 7
Dependent Claim
26 words
The method of claim 7, wherein the weldable, solderable or brazable means is a metal containing means extending to about the periphery of the ceramic means.
Claim 8
Dependent Claim
16 words
The method of claim 7, wherein the elongated metal means is a dielectric film forming metal.
References Cited (Backward Citations)
US2100187A
Cited
US2206489A
Cited
US3225132A
Cited
US3275358A
Cited
US3275901A
Cited
US3356466A
Cited
US3436109A
Cited
US3467509A
Cited
US3522489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |