Process for the manufacture of an electrical contact point
Abstract
Abstract IMPROVED PROCESS OF PRODUCING CONTACTS HAVING A BASE SUPPORT OR SUBSTRATE COATED ON AT LEAST PART OF AT LEAST ONE SURFACE WITH A HARD TO FORM METAL SUCH AS TUNGSTEN, RHENIUM, MOLYBDENUM, RUTHENIUM, IRIDIUM OR AN ALLOY THEREOF WHEREIN THE METAL COATING MATERIAL IS PROVIDED AS AT LEAST THE INSIDE SURFACE OF A CYLINDER AND POSSIBLY ALSO AS AN AXIAL ROD INTHE CYLINDER, ATTACHED TO A HIGH FREQUENCY GENERATOR WHICH CYLINDER HAS A LONGITUNDINAL SLIT THEREIN, A PLASMA IS GENERATED BY THE HIGH FREQUENCY GENERATOR WHICH ATOMIZES THE METAL AND DISCHARGES SUCH THROUGH THE SLIT ONTO A SUITABLE SUBSTRATE WHICH MAY BE MADKED, IF DESIRED. THE PROCESS IS SUITABLY CARRIED OUT IN A HERMETICALLY SEALED CHAMBER HAVING VACUUM PUMPING MEANS ATTCHED THERETO AND GAS ADMITTANCE MEANS ATTACHED THERETO WHEREBY THE PRESSURE CAN BE REGULATED TO 10-2 TO 1MM. HG A AND THE ATMOSPHERE CAN BE REGULATED AS DESIRED.
Inventors
- 👤 Walter Reichelt
Bibliographic Details
Claims Analysis
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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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |