Abstract: A soldered feed-through device that is inserted into a bulkhead opening has one or more sets of laterally protruding and symmetrically distributed teeth that cut through the bulkhead material as the feed-through is inserted into the bulkhead opening. The teeth automatically center the feed-through device within the bulkhead opening and resist tilting of the feed-through and its through-hole conductor so that application of solder to the area between the feed-through and the inner periphery of the opening produces a solder joint having uniform radial thickness of preferably about 0.14 mm (0.0055 in.).

Abstract: A press-fit feed-through device has one or more sets of laterally protruding and symmetrically distributed teeth that are laterally aligned and cut through the material of a bulkhead as the feed-through is inserted into a bulkhead opening. Lateral grooves disposed immediately inboard of each set of teeth receive the bulkhead material cut by the respective set of teeth. In feed-through devices having more than one set of teeth, the additional sets of teeth are located successively outboard of, and in axial alignment with, the first set of teeth, and cut successively deeper into the bulkhead as the feed-through is inserted into the opening.

Abstract: A press-fit feed-through device has one or more sets of laterally protruding and symmetrically distributed teeth that are laterally aligned and cut through the material of a bulkhead as the feed-through is inserted into a bulkhead opening. Lateral grooves disposed immediately inboard of each set of teeth receive the bulkhead material cut by the respective set of teeth. In feed-through devices having more than one set of teeth, the additional sets of teeth are located successively outboard of, and in axial alignment with, the first set of teeth, and cut successively deeper into the bulkhead as the feed-through is inserted into the opening.

Abstract: A soldered feed-through device that is inserted into a bulkhead opening has one or more sets of laterally protruding and symmetrically distributed teeth that cut through the bulkhead material as the feed-through is inserted into the bulkhead opening. The teeth automatically center the feed-through device within the bulkhead opening and resist tilting of the feed-through and its through-hole conductor so that application of solder to the area between the feed-through and the inner periphery of the opening produces a solder joint having uniform radial thickness of preferably about 0.14 mm (0.0055 in.).

Abstract: An improved method of manufacture for wire feed-through devices, wherein a pre-formed tubular seal having a central axial opening for accommodating the wire insulates the wire from the ferrule and provides a tight environmental seal between the ends of the ferrule. The seal is radially compressed and then inserted, either by itself or with the wire, into the central opening of the ferrule so that the seal is maintained in compression between the wire and an inside diameter of the ferrule. In devices where one end of the ferrule opening is enlarged to accommodate one or more filter elements, the seal is positioned in the narrow portion of the ferrule opening, and additionally serves to maintain an inherent concentricity of the wire within the ferrule during installation and attachment of the filter elements, and injection or insertion of encapsulant material into the enlarged portion of the ferrule opening.