Terminal assembly and method of forming terminal assembly
US6255598A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1999 |
| Grant date | Jul 3, 2001 |
| Priority date | — |
| Expiry date | Jul 15, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R4/62
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A primarily polycrystalline but partially amorphous electrical insulator can hermetically seal first and second spaced electrical terminals, one made from an anodized aluminum and the second made from a beryllium copper or Kovar or an alloy of beryllium, copper, nickel and gold. Nickel may be diffused into the beryllium copper and a noble metal may be deposited on the nickel. The insulator provides a flat meniscus to abut a corresponding electrical insulator in a cable. The insulator may provide an electrical impedance of approximately 50 ohms, an electrical resistivity greater than approximately 10.sup.18 ohms and a dielectric constant of approximately 6.3. The insulator operates satisfactorily in a frequency range to approximately 40 gigahertz. The insulator may be made from the following mixture: Range of Relative Material Amounts by Weight Red Lead (PbO) 156-279 Silicon Dioxide (Quartz) 340 Sodium Carbonate 139-165 Potassium Carbonate 151-189 Lithium Carbonate 64-148 Boric Acid 111-183 Calcined Alumina 47-128 The mixture may be converted into a frit by heating it at about 400.degree. F. for about 10 minutes, then at about 600.degree. F. for about 60 minutes and then at about 15…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.