US3447233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonding thermoelectric elements to nonmagnetic refractory metal electrodes
Assignee: National Aeronautics and Space Administration
•
Filing: 1966-09-30
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Granted: 1969-06-03
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Expires: 1986-09-30
Abstract
No abstract record available.
Inventors
- 👤 Martin Weinstein
- 👤 Eldon J Sherwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:05
CPC Classifications
B; B23; B23K; B23K20/00; Y; Y10; Y10S; Y10S228/00; Y10S228/903; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49169; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12528; Y10T428/12687; Y10T428/12701; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/1284
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A METHOD OF BONDING A TUNGSTEN ELECTRODE TO A THERMOELECTRIC ELEMENT SELECTED FROM THE GROUP CONSISTING OF LEAD-TELLURIDE AND LEAD-TIN-TELLURIDE, COMPRISING THE STEPS OF: CLEANING THE THERMOELECTRIC ELEMENT AND THE ELECTRODE, LAPPING A SURFACE OF THE THERMOELECTRIC ELEMENT AND AND THE ELECTRODE TO FORM A FLAT FACE ON EACH, ASSEMBLING THE ELEMENT AND THE ELECTRODE SO THAT THE LAPPED SURFACES ARE IN CLOSE CONTACT, AND HEATING THE ASSEMBLY TO A TEMPERATURE OF FROM 840 TO 850*C. FOR A PERIOD OF TIME SUFFICIENT OT BOND THE ELECTRODE MATERIAL ONTO THE THERMOELECTRIC ELEMENT AND THEREBY FORM A STRONG STABLE BOND THERE BETWEEN.
Claim 2
Independent Claim
100 words
A METHOD OF BONDING A TUNGSTEN ELECTRODE TO A THERMOELECTRIC ELEMENT SELECTED FROM THE GROUP CONSISTING OF LEAD-TELLURIDE AND LEAD-TIN-TELLURIDE, COMPRISING THE STEPS OF: CLEANING THE THERMOELECTRIC ELEMENT AND THE ELECTRODE, LAPPING A SURFACE OF THE THERMOELECTRIC ELEMENT AND AND THE ELECTRODE TO FORM A FLAT FACE ON EACH, ASSEMBLING THE ELEMENT AND THE ELECTRODE SO THAT THE LAPPED SURFACES ARE IN CLOSE CONTACT, AND HEATING THE ASSEMBLY TO A TEMPERATURE OF FROM 840 TO 850*C. FOR A PERIOD OF TIME SUFFICIENT OT BOND THE ELECTRODE MATERIAL ONTO THE THERMOELECTRIC ELEMENT AND THEREBY FORM A STRONG STABLE BOND THERE BETWEEN.
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) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |