Electrical feedthrough and its manufacture, and apparatus utilizing the feedthrough

• Main Authors: ROMANO, TIMOTHY A, ENEIM, ARTHUR A, HUGHES,GARY B
• Format: Patent
• Language: English; French; German
• Published: 28.06.1995
• Edition: 6
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; COLD ROOMS; COLORIMETRY; COMBINED HEATING AND REFRIGERATION SYSTEMS; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS; CURRENT COLLECTORS; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; HEAT PUMP SYSTEMS; HEATING; ICE-BOXES; LIGHTING; LINE CONNECTORS; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; MANUFACTURE OR STORAGE OF ICE; MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT; MEASURING; MECHANICAL ENGINEERING; PHYSICS; PRINTED CIRCUITS; RADIATION PYROMETRY; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; REFRIGERATORS; TESTING; WEAPONS

An electrical feedthrough is formed of a first layer of an electrically insulating material, an electrically conductive trace overlying the first layer, and a second layer of an electrically insulating material overlying the first layer and the electrically conductive trace, such that the electrically conductive trace is sandwiched between the first layer and the second layer. The insulating materials are preferably ceramics that are co-fired with the electrically conductive trace during the manufacture of the feedthrough. The feedthrough is utilized by joining it to an aperture through the wall of an apparatus. In one form, the feedthrough itself is hermetic and can be joined to the wall with a hermetic seal.