Sealed electrical feedthrough device
US4982055A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1989 |
| Grant date | Jan 1, 1991 |
| Priority date | — |
| Expiry date | Nov 29, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K7/023
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The feedthrough device includes first and second half housing members, each of which has an internal chamber. The feedthrough device further includes a removable header member that fits within the chambers of the first and second half housing members when they are threaded together. The first half housing member has a threaded protrusion which fits into a threaded aperture located in the wall of a sealed structure, such as the wall of a vacuum furnace. The threaded protrusion arrangement includes a first "O" ring which seals the periphery of the aperture in the wall of the sealed structure. The header has first connectable terminals on one end and second connectable terminals on the other end. In between the first and second connectable terminals of the header there is located a plate member which fits along the edge of the first half housing member chamber; and located between that edge and the plate is a second "O" ring. Wires connecting the first and second terminals pass through the plate member in a sealed arrangement. The second half housing member has an abutting structure located at the end of its chamber so that when the second half housing member threads with the first ho…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.