Abstract: A terminal is provided for introducing signals from an electrical terminal pin in a heart pacemaker to a terminal lead introduced into a patient's body. The terminal pin is disposed in a lid of the heart pacemaker so that the terminal pin is insulated from the lid. Means are also provided for introducing the signals on the terminal pin to the terminal lead without subjecting the pin to undue stresses.The terminal includes a hollow, electrically conductive ferrule disposed in concentric relationship with the terminal pin and attached to the lid. An electrical filter is disposed in the ferrule and is maintained in fixed relationship to the ferrule and the terminal. Insulating means are provided for bonding the ferrule and the terminal.An elongated sleeve is disposed on the ferrule and an insulating material is disposed between the terminal pin and the sleeve and is hermetically sealed to the terminal pin and the sleeve.

Abstract: A terminal is provided for introducing signals from an electrical terminal pin in a heart pacemaker to a terminal lead introduced into a patient's body. The terminal pin is disposed in a lid of the heart pacemaker so that the terminal pin is insulated from the lid. Means are also provided for introducing the signals on the terminal pin to the terminal lead without subjecting the pin to undue stresses.The terminal includes a hollow, electrically conductive ferrule disposed in concentric relationship with the terminal pin. The ferrule is provided with a flange which is disposed against the lid. An electrical filter is disposed in the ferrule and means are provided for maintaining the filter in fixed relationship to the ferrule and the terminal. Insulating means are provided for bonding the ferrule and the terminal. An inductance may also be included in the terminal and may be connected to the filter to enhance the filtering effect.

Abstract: New alloys containing gold, vanadium, yttrium and/or scandium, optionally including niobium. The alloys are particularly suitable for brazing and for metallizing, most particularly for brazing hermetic ceramic-metal seals. Unique brazing structures and methods are also disclosed.

Abstract: A leak-tight joint between a Kovar ceramic feed-through and an aluminum housing is obtained by electron beam welding a short length of the outside surface of the Kovar cylindrical shell of the feedthrough to a region of nickel deposited on a thin wall cylindrical tube of aluminum formed in the aluminum housing.

Abstract: New alloys containing gold, vanadium, yttrium and/or scandium, optionally including niobium. The alloys are particularly suitable for brazing and for metallizing, most particularly for brazing hermetic ceramic-metal seals. Unique brazing structures and methods are also disclosed.

Abstract: A bakable multi-pins vacuum feedthrough suitable for providing electrical connection from outside into a vacuum vessel of a synchrotron, comprising a metal cylinder and a disc-shaped ceramic pin-holder having multi-pins, wherein the pin-holder is sealingly fixed inside the cylinder at a place axially nonidentical with where the pin-holer and the multi-pins are sealingly fixed, so that favorable resistibility against high vacuum, baking, and strong radioactive rays is attained.

Abstract: A feed-thru type hermetic electrical connector including at least one connector pin feeding through an insulator block within the metallic body of the connector shell. A compression stop arrangement coaxially disposed about the insulator body is brazed to the shell, and the shoulder on the insulator block bears against this top in a compression mode, the high pressure or internal connector being at the opposite end of the shell. Seals between the pin and an internal bore at the high pressure end of the insulator block and between the insulator block and the metallic shell at the high pressure end are hermetically brazed in place, the first of these also functioning to transfer the axial compressive load without permitting appreciable shear action between the pin and insulator block.

Abstract: A feedthrough connector for use on an implantable electronic cardiac pacer. A single structure provides a means for connecting a heart lead to the pacer and feedthrough into the body of the pacer. The feedthrough may include filtering means to protect against external interferences. The entire structure has provisions for physical compliance to absorb stresses due to different heat coefficients and as may be caused during assembly and use. Also disclosed is a method for making the feedthrough connector.

Abstract: A sealed terminal of invention is used for a metal vessel containing water and has improved characteristics such as anticorrosive characteristics, water sealing characteristic and high mechanical strength and insulating characteristic. A terminal conductor of an auxiliary anode is seal-bonded in a terminal opening of the metal vessel with an insulator comprising mica and glassy material and which is softened at a temperature lower than about 900.degree. C. and is plastic deformable under compression.

Abstract: An electrical terminal device comprises a metallic body or support cut through which an iron-chronmium alloy, conductive lead wire extends in an insulated and sealed manner. The free ends of the lead wire or wires extend out of the cup. A glass-to-metal seal is provided between the wires and the cup. The free ends of the lead wires are partially plated or coated with a layer of an oxidation resistant metal. A portion intermediate the free ends is provided with a layer of chromium oxide to improve the seal between the lead wire and a fused glass bead held in an aperture in said support cup. The method of manufacturing such devices comprises partially plating a nickel, copper or other metal which is resistant to oxidation in a hydrogen atmosphere at high temperature and humidity, on the surface of the terminal end portions of the lead wires, while the intermediate portion where the conductor is secured to a glass bead is left free of such a plating.

Abstract: An electrical terminal assembly for use in conducting current through the wall of a sealed motor compressor unit and more particularly to a shield of dielectric material arranged on said terminal assembly so as to prevent contaminants when present in said motor compressor unit from depositing on said terminal assembly.

Abstract: A metal body, for example, a cover for hermetically sealed electrochemical cells, is relatively flexible and electrically conductive. An aperture is provided within the body to receive an electrically insulating material, such as glass, which mounts a terminal or metal lead, for the cell. In the process for producing the seal, the body is positioned with the lead therein and a sealing glass is placed thereabout. The assembly is fired at a temperature high enough to achieve melting of said sealing glass and effecting a between the body, lead and glass to form a glass-to-metal seal. At least one surface of the lead is then ground to be flush with the glass and then the assembly is refired to heal cracks formed in the glass by the grinding operation.

Abstract: Hermetic glass seals of high electrical resistivity are provided. Glass compositions suitable for use in such seals and based on lead-silica glasses are described. Glass compositions having particular efficacy in a nuclear reactor environment also are described.

Abstract: An insulated, corrosion-resistant heart pacer is described which incorporates a novel tantalum output means, said output means having disposed on at least the exterior surfaces thereof an anodically-formed substantially continuous Ta.sub.2 O.sub.5 insulating layer. The output means of the pacer or other medical electronic device comprises a tantalum centerpin disposed through a hermetically sealed titanium case, which centerpin is welded to a tantalum feed wire, the combination providing a device in which the Ta.sub.2 O.sub.5 insulating layer reduces the electrical leakage from the tantalum conductor to the titanium case, and whereby the insulating layer disposed thereon further protects the pacer from electrolysis and electrochemical corrosion. An alternate embodiment of the present invention provides tantalum conduit means for electrically connecting an energy source to logic circuitry which is disposed within a hermetically sealed titanium case.

Abstract: A hermetic terminal comprising a metallic wall having at least one opening therein through which a conductor pin extends, said pin being secured in said opening by means of a glass-to-metal seal, said pin comprising three distinct sections, namely, a first section of any suitable electrically conductive material, such as cold rolled steel, a second intermediate section of a sealing alloy, such as stainless steel or a nickel-iron alloy, and a third section of a highly conductive, corrosion-resistant metal, such as copper. The intermediate section of the pin, i.e., the sealing alloy, contacts the glass in the aforesaid glass-to-metal seal with the copper section of the pin extending in one direction from the metallic wall and the cold rolled steel section of the pin extending in the opposite direction therefrom.