US3864658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode for a granular electrical circuit element and method of making same
Assignee: General Electric Co
•
Filing: 1973-09-24
•
Granted: 1975-02-04
•
Expires: 1993-09-24
Abstract
Abstract A ceramic-metal electrode is provided on the granular surface of a block of non-linear resistance material such as silicon carbide. The electrode forms a low resistance electrical contact with granules of the silicon carbide, and is manufactured by applying a water-moistened composition of an easily reducible, refractory metal oxide, in combination with a suitable clay, to predetermined areas of the non-linear material. The electrode composition is then fired in a reducing atmosphere to form a ceramic-metal electrode that affords excellent electrical conductive properties and provides a bond to the surface of the material, thereby to improve its long duration strength.
Inventors
- 👤 John J Pitha
- 👤 Howard F Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:34
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/28; H01C17/281; H01C17/283; H01C7/00; H01C7/10; H01C7/102; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49101
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
74 words
A NON-LINEAR RESISTOR HAVING A BODY CONSTITUTED OF A MASS OF CABLE GRAINS OF THE CLASS CONSISTING OF SILICON CARBIDE, TUNGSTEN CARBIDE AND BORON CARBIDE, IN COMBINATION WITH AT LEAST ONE LOW RESISTANCE ELECTRODE AFFIXED TO A PREDETERMINED SURFACE AREA OF SAID BODY IN ELECTRICAL CONDUCTING RELATIONSHIP THEREWITH, SAID ELECTRODE COMPRISING A COMPOSITION CONSISTING OF AT LEAST 30 PERCENT BY WEIGHT OF TI AND 20 PERCENT BY WEIGHT OF CR CONTAINED IN A MATRIX.
Claim 2
Dependent Claim
74 words
A NON-LINEAR RESISTOR HAVING A BODY CONSTITUTED OF A MASS OF CABLE GRAINS OF THE CLASS CONSISTING OF SILICON CARBIDE, TUNGSTEN CARBIDE AND BORON CARBIDE, IN COMBINATION WITH AT LEAST ONE LOW RESISTANCE ELECTRODE AFFIXED TO A PREDETERMINED SURFACE AREA OF SAID BODY IN ELECTRICAL CONDUCTING RELATIONSHIP THEREWITH, SAID ELECTRODE COMPRISING A COMPOSITION CONSISTING OF AT LEAST 30 PERCENT BY WEIGHT OF TI AND 20 PERCENT BY WEIGHT OF CR CONTAINED IN A MATRIX.
Claim 3
Dependent Claim
36 words
An invention as defined in claim 1 including a second electrode affixed to a second predetermined surface area of said body in electrical conducting relationship therewith, said first and second areas being disposed in spaced-apart relationship.
Claim 4
Dependent Claim
20 words
An invention as defined in claim 2 wherein said electrodes are affixed to said body on opposite sides thereof, respectively.
Claim 5
Dependent Claim
25 words
An invention as defined in claim 3 wherein said body is generally cylindrical in form, and said electrodes are affixed, respectively, to the ends thereof.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |