US2586752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloy resistance element and method for manufacturing same
Assignee: New York University
•
Filing: 1946-09-26
•
Granted: 1952-02-19
•
Expires: 1966-09-26
Abstract
No abstract record available.
Inventors
- 👤 Weber Ernst
- 👤 Johnson Stanley Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:46
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN THE MANUFACTURE OF ALLOY RESISTANCE ELEMENTS, THE PROCESS WHICH COMPRISES HEATING A CLEAN DIELECTRIC CARRIER TO TEMPERATURES WITHIN THE RANGE OF FROM ABOUT 300* C. IN AN ENCLOSED SPACE IN WHICH THE PRESSURE IS LESS THAN 8X10-5 MM. OF MERCURY, SIMULTANEOUSLY HEATING A TUNGSTEN FILMENT IN SAID ENCLOSED SPACE IN CONTACT WITH A NICKEL ALLOY, SELECTED FROM A GROUP CONSISTING OF NICKEL-CHROMIUM AND NICKEL-COPPER, UNDER CONDITIONS CAUSING THE ALLOY TO MELT, TO COVER THE FILAMENT AND TO VAPORIZE, SAID DIELECTRIC CARRIER BEING SUFFICIENTLY CLOSE TO THE FILAMENT TO BE COATED BY THE VAPORIZED METAL, STOPPING THE HEATING OF THE FILAMENT BEFORE ANY SUBSTANTIAL CONTAMINATION OF THE COATING IS PRODUCED BY VAPORIZATION OF TUNGSTEN FROM THE FILAMENT, AND VAPORIZING MAGNESIUM FLUORIDE IN PROXIMITY TO THE ALLOY-COATED CARRIER TO COAT SAID CARRIER WITH MAGNESIUM FLUORIDE WHILE STILL UNDER A VACUUM.
Claim 2
Dependent Claim
139 words
IN THE MANUFACTURE OF ALLOY RESISTANCE ELEMENTS, THE PROCESS WHICH COMPRISES HEATING A CLEAN DIELECTRIC CARRIER TO TEMPERATURES WITHIN THE RANGE OF FROM ABOUT 300* C. IN AN ENCLOSED SPACE IN WHICH THE PRESSURE IS LESS THAN 8X10-5 MM. OF MERCURY, SIMULTANEOUSLY HEATING A TUNGSTEN FILMENT IN SAID ENCLOSED SPACE IN CONTACT WITH A NICKEL ALLOY, SELECTED FROM A GROUP CONSISTING OF NICKEL-CHROMIUM AND NICKEL-COPPER, UNDER CONDITIONS CAUSING THE ALLOY TO MELT, TO COVER THE FILAMENT AND TO VAPORIZE, SAID DIELECTRIC CARRIER BEING SUFFICIENTLY CLOSE TO THE FILAMENT TO BE COATED BY THE VAPORIZED METAL, STOPPING THE HEATING OF THE FILAMENT BEFORE ANY SUBSTANTIAL CONTAMINATION OF THE COATING IS PRODUCED BY VAPORIZATION OF TUNGSTEN FROM THE FILAMENT, AND VAPORIZING MAGNESIUM FLUORIDE IN PROXIMITY TO THE ALLOY-COATED CARRIER TO COAT SAID CARRIER WITH MAGNESIUM FLUORIDE WHILE STILL UNDER A VACUUM.
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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) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |