Abstract: An electrical bushing includes a replaceable stud which connects the electrical bushing which is mounted on the housing for an electrial distribution unit to electrical equipment located outside the housing. The replaceable stud includes a first stud shank connectable to a conductor within the body of the electrical bushing and which is stronger than a second stud shank connectable to the electrical equipment located outside the housing. The replaceable stud, if damaged, can be removed from the bushing body without otherwise disturbing the bushing body or any connections between the electrical bushing and equipment positioned inside the housing.

Abstract: This invention is directed to an improved seal for an electrical conductor bushing operable in service above about 69 kV. Typically, the seal is interposed between the bushing cap and the porcelain. Two flat, thin non-metallic gaskets are stacked together and separated from each other by means of a rigid washer. The rigid washer is provided with a pair of inner and outer upstanding flanges which form a trough for engagement therein of one of the gaskets. The gasket-washer assembly provides oil-tight integrity for the bushing under standard industry cantilever and thermal expansion tests.

Abstract: An electrical insulating bushing for conversion between various current ratings and characterized by a tubular column including an insulating portion, a tubular conductor extending through the column and connected to terminals at the top and bottom of the column, and another conductor disposed within the tubular conductor and connected to the terminal at the top of the column. In order to convert the bushing to a different current rating, a replacement conductor is provided which can be substituted for the conductor within the tubular conductor. The replacement conductor and tubular conductor are electrically connected together in spaced alignment near the bottom terminal by a conductive annulus and a coil spring.

Abstract: A high voltage bushing has a central conductor which is surrounded by an insulation bushing core. The outer end of the conductor is bare and extends beyond the end of the bushing core. A mounting flange is also secured to the bushing core. One end of a hollow porcelain weathershed is fitted over the outer end of the central conductor and bushing core and seats against the mounting flange and defines an annular volume between the interior of the porcelain weathershed and the exterior of the bushing core. The bushing core is tapered down toward its end so that the annular volume within the weathershed has a tapered outer surface. The free end of the porcelain weathershed receives a bushing cap which seals the annular volume and can be bolted against the porcelain weathershed by a nut which is threaded onto the outer end of the conductor.

Abstract: A self-sealing electrode guide for supporting an electrode in an electrode port of a welding chamber, includes a housing adapted to be mounted in the electrode port and a sealing sleeve accommodated in a housing channel defined in the housing. The sealing sleeve has opposite first and second ends and an open-ended passage adapted to receive the electrode. The first end is disposed for exposure to an external force which is oriented in a direction extending from the first end towards the second end and which is derived from a pressure in the welding chamber. An abutting arrangement is provided in the housing for cooperating with the second end to prevent displacement of the sealing sleeve relative to the housing. The sealing sleeve is resiliently deformable by the external force for assuming a deformed state in which the sealing sleeve is sealingly pressed about the electrode and against housing walls forming the housing channel.

Abstract: An elongated electric bushing for a transformer, reactor, or the like is provided with a flexible intermediate flange (3) which comprises a plurality of spring devices (28) oriented in the longitudinal direction of the bushing, and a cardan assembly (11) for taking up longitudinally directed forces arising in case of an earthquake.

Abstract: The invention discloses resulting products and a method of producing high voltage resistant members employed in electrical installations such as bushings and insulators. The method comprises placing a sheath of unvulcanized elastomer on a core, which for example is a fiberglass rod, for example by extruding the sheath thereon, and mounting vulcanized sheds on the sheath therealong, then vulcanizing the sheath to form an integrated high voltage resistant member. The sheath is unvulcanized when the sheds are mounted thereon and then the sheath is heated to vulcanize it, in order to bond it to the sheds and to the core. The sheds also can be molded directly onto the sheath together therewith in steps along the length of the core. For producing a bushing, the sheath is placed on a core formed of a conductive stud wrapped with paper and metal foil and then impregnated with a suitable hardenable resin.

Abstract: A watertight bushing and bolt mounting assembly includes a collar portion around the bushing with a first groove within which is received an upturned flange surrounding an opening in the wall member through which the bushing extends. A resilient first seal member around the flange is pressed against the wall member, the flange or the shoulder formed therebetween to create a watertight seal around the opening when the bushing is clamped to the wall member. A clamp plate secures the bushing to the wall member by means of a watertight bolt mounting assembly which includes a nut with an annular cavity receiving an upturned lip surrounding the bolt bore. A bolt seal member is located around the lip of the bolt bore and is pressed by the nut against the wall member, the lip or the bolt shoulder formed therebetween to create a watertight seal around the bolt bore.

Abstract: Disclosed is a seal which provides effective hermetic sealing of insulated metallic feedthroughs in metallic containers. The device has particular applicability in the fabrication of pressurized metal/gas battery cells such as those used in spacecraft. A conductive terminus protrudes through a metallic vessel which may be pressurized. It is desired to maintain electrical separation between the terminus and the wall of the vessel by means of a dielectric, which is compressed between the terminus and a metallic boss to provide a hermetic seal. The compressive force is applied radially outwardly by means of drawing a nondeformable pin through a hollow cylindrical barrel constituting the terminus, thereby slightly deforming the barrel and grossly deforming the dielectric. The pin may be either pulled out of the barrel from within the vessel or pushed into the barrel from outside the vessel, but in each case force is applied radially outwardly in a gradual, relatively frictionless fashion.

Abstract: A piercing fluid-tight connector device for use with ultra-low temperature cable for supplying external electrical current to a motor of a pump located in an accumulation tank or vessel. An insulating sleeve having a flange with a female thread at an inner peripheral surface of the sleeve is threadingly engaged with an electrically conductive rod with a male thread thereof. A sealing member is interposed between the sleeve and rod. The coupled sleeve and rod extend through an aperture in a main metal body with the flange of the insulating sleeve and the metal body being in contact with each other, preferably through a packing, so as to provide a fluid-tight structure.

Abstract: The passage in a wall which separates the interior of the housing of a glandless submersible motor pump from the surrounding atmosphere is normally sealed by an annular seat which is placed against the end face of a muff forming a detachable part of the wall, and by a temperature- and pressure-resistant ceramic sleeve which surrounds an elongated metallic conductor and normally bears against the seat owing to the pressure differential between the interior of the housing and the surrounding atmosphere. If the sleeve is destroyed, a normally confined plunger of the conductor bears directly against the seat to prevent escape of fluid from the pump housing. That end portion of the conductor which extends into the housing is surrounded by one or more layers of insulating tape and by a tubular sheath which is shrunk onto the tape and exhibits at least some thermal-shock-absorbing characteristics.

Abstract: Current lead-in of the coaxial type, including at least two conducting tubes passing through a container wall, a gas-tight seal disposed between the tubes and the walls, an induction heating coil supplied with high frequency current from the tubes for producing a melting zone in a semiconductor rod, and a pressure-deformable electrically-insulating tension element disposed between the tubes. The tubes are in the form of an inner end and an outer tube. A pressure plate and a ring are disposed near one end of the inner tube, a ceramic tube surrounds the inner tube between the ring and the tension elements, and a ceramic ring stop is disposed at the other end of the inner tube. The ceramic tube and tension element have smaller outside diameters than the ring and stop and they are surrounded by the outer tube. Pressure is applied to the tension element by screws in the pressure plate or by a nut screwed onto the inner tube.

Abstract: A high power flexible connector has a first conductive member adapted for connection to a bushing and a second conductive member adapted for connection to a winding. A plurality of flexible conductors connect the first member to the second member. Mechanically, the conductors provide for independent movement of the bushing with respect to the winding. Electrically, the cables provide a plurality of current paths and produce an electric field when carrying a current. The conductors are arranged such that the induced electric field is uniform.

Abstract: A thermally actuatable electrical switch construction having a housing carrying an electrically insulating end plug provided with an opening passing therethrough and in which a portion of a conductive lead is disposed so that opposed ends of the lead extend beyond opposed ends of the plug and respectively define a fixed contact inside the housing and a terminal outside the housing, the portion of the lead being retained in the opening by a sealing compound disposed in the opening and extending around the portion of the lead and interlocking therewith to tend to prevent axial movement of the lead into the housing as well as to tend to prevent rotational movement of the lead relative to the end plug.

Abstract: A thermally actuatable electrical switch construction having a housing carrying an electrically insulating end plug provided with an opening passing therethrough and in which a portion of a conductive lead is disposed so that opposite ends of the lead extend beyond opposed ends of the plug and respectively define a fixed contact inside the housing and a terminal outside the housing, the portion of the lead being retained in the opening by a sealing compound disposed in the opening and extending around the portion of the lead and interlocking therewith to tend to prevent axial movement of the lead into the housing as well as to tend to prevent rotational movement of the lead relative to the end plug. The portion of the lead has a substantially unrecessed cylindrical peripheral surface throughout the entire length thereof and has a plurality of outwardly extending cog-like members that extend outwardly from the peripheral surface and interlock with the sealing compound in the opening of the end plug.

Abstract: A thermally actuatable electrical switch construction having a housing carrying an electrically insulating end plug provided with an opening passing therethrough and in which a portion of a conductive lead is disposed so that opposite ends of the lead extend beyond opposed ends of the plug and respectively define a fixed contact inside the housing and a terminal outside the housing, the portion of the lead being retained in the opening by a sealing compound disposed in the opening and extending around the portion of the lead and interlocking therewith to tend to prevent axial movement of the lead into the housing as well as to tend to prevent rotational movement of the lead relative to the end plug. The portion of the lead has a series of at least two convolutions that interlock with the sealing compound in the opening of the end plug. The two convolutions respectively have apexes that respectively engage the internal surface of the end plug substantially on opposite sides thereof.

Abstract: An adapter for retaining a conductive rod within a high voltage bushing insulator is disclosed. The adapter is crimped onto parallel slots of the conductive rod and located within a cavity of the insulator. The crimped adapter prevents radial, axial, and angular movement of the conductive rod relative to the insulator.

Abstract: The invention discloses resulting products and a method of producing high voltage resistant members employed in electrical installations such as bushings and insulators. The method comprises placing a sheath of unvulcanized elastomer on a core, which for example is a fiberglass rod, for example by extruding the sheath thereon, and mounting at least partially vulcanized sheds on the sheath therealong, then vulcanizing the sheath to form an integrated high voltage resistant member. The sheath is unvulcanized when the sheds are mounted thereon and then the sheath is heated to vulcanize it, in order to bond it to the sheds and to the core. The sheds also can be molded directly onto the sheath together therewith in steps along the length of the core. For producing a bushing, the sheath is placed on a core formed of a conductive stud wrapped with paper and metal foil and then impregnated with a suitable hardenable resin.

Abstract: A high voltage seismic bushing charged with an insulating material has a procelain tube having an adapter rigidly connected to one end of the tube. The adapter is flexibly connected to a mounting flange such that the porcelain tube is free to move relative to the mounting flange in the event of an earthquake. The means for flexibly connecting the adapter to the mounting flange utilizes a spring mechanism to absorb the energy through friction to attenuate the movement of the porcelain tube. A resilient buffer member is interposed between the adapter and the mounting flange to provide a predetermined spacing therebetween and absorb the impact due to the movement of the adapter relative to the mounting flange. A sealing member seals the interface between the adapter and the mounting flange for containing the insulating material charged therein.

Abstract: An electrically insulating, structurally strong bushing assembly for use at the chassis mounting interface of an electronic chassis, especially a Low Power RF chassis requiring a single point electrical ground, includes a specially machined epoxy-glass bushing for electrical insulation with a steel insert for high strength. The epoxy-glass bushing is machined from plate stock with the grain direction running perpendicular to the structural load and includes both inside and outside threads. The steel insert threads into the epoxy-glass bushing which is then threaded into the electronic chassis.

Abstract: A high voltage seismic bushing charged with an insulating material has a porcelain tube having an adapter rigidly connected to one end of the tube. A connecting plate is rigidly connected to a mounting flange. The adapter is flexibly connected to the connecting plate such that the porcelain tube is free to move relative to the mounting flange in the event of an earthquake. The means for flexibly connecting the adapter to the connecting plate utilizes a damping mechanism to attenuate the movement of the porcelain tube. A resilient buffer member is interposed between the adapter and the connecting plate to provide a predetermined spacing therebetween and absorb the impact due to the movement of the adapter relative to the connecting plate. A sealing member seals the interface between the adapter and the connecting plate for containing the insulating material charged therein.

Abstract: The new conductor facility for electrodes, in particular for electrodes immersed in corrosive molten salts, features the following components:(a) A graphite pipe or tube which is open at both ends, fits tightly into a recess in the electrode and passes through the furnace or cell wall or roof.(b) A metallic electrical conductor, which is positioned inside the graphite pipe and can be pushed forward inside it, is made of a metal with a melting point lower than the temperature of the molten salt charge and makes contact with the electrode in the liquid state at the operating temperature of the furnace or cell.(c) A protective pipe, which surrounds the graphite pipe and is made of a dense, electrically insulating ceramic material, has one end tightly embedded in the electrode and the other end passing through the wall or roof, and is stable under the operating conditions of the furnace or cell.

Abstract: A self-sealing battery terminal including a hydroformed Inconel outer case, a low shear strength sealant material, and a central post in the form of a bolt which acts as both a conductor and transmits the preload from a pair of Belleville washers to a lower ceramic washer. The lower ceramic washer acts like a piston to compress the sealant when the nut on the central post is tightened. The Belleville washers serve to maintain a minimum tension on the central post. A top ceramic washer is held in place by the tension in the central bolt as long as the tension exceeds a minimum value.

Abstract: An insulating support means mounts a bus conductor on a grounded metal wall through which the bus conductor extends. The bus conductor has a thin coating of insulating material bonded to its exterior. The support means comprises a porcelain sleeve mounted on the metal wall and surrounding the bus conductor, with the inner periphery of the sleeve disposed in spaced relationship to the insulating coating. Positioned between the inner periphery of the porcelain sleeve and the insulating coating is a disc of resilient insulating material closely surrounding the bus conductor. This disc has an axial length much shorter than the porcelain sleeve and is thus spaced axially from both ends of the porcelain sleeve.

Abstract: An electrical connector in the form of a double bushing insert comprises means for electrically and mechanically threadably connecting the insert to a transformer bushing well. Such means is adapted to permit free angular rotation of the insert in opposite directions through a predetermined angle after the insert has been torqued into fixed operative threadable engagement with the bushing well stud without a need to back-off the insert from the stud by loosening the threaded connection therebetween.

Abstract: An electric penetration assembly for passing electrical conductors through the wall of a pressure vessel has at least one hermetically sealed electric feed-through conductor surrounded by an insulator. The insulator is symmetrical about an axis parallel with the conductors and is impervious with a pervious means disposed between the ends. The insulator is shaped wherein an external conical section is disposed between two external cylindrical sections and wherein the pervious means communicates with the conical section. The assembly is inserted into a header plate having at least one transverse aperture formed with a female conical section disposed between two female cylindrical sections. In the female conical sections are formed two axially spaced grooves for accepting O-ring type gaskets and the plate has at least one capillary bore formed therein which communicates with the conical section and with one face of the plate.

Abstract: An insulator assembly for use in assisting the transfer of electrical power from one side to the other of a bulkhead or panel having a hole therein. The assembly uses a basic insulator device having a body portion as well as an upstanding feedthrough portion, with the upstanding portion being of a size so as to extend through a hole in the bulkhead or panel. The upstanding member is provided with a hole therethrough in which a current-carrying member is secured. Such current-carrying member forms the support for at least one connector means on the upstanding member, and at least one connector means on the body portion, thereby facilitating connection to a current-carrying member located on each side of the bulkhead.

Abstract: A cathode support assembly includes an apertured ceramic member, an apertured spring washer, and a dual diameter eyelet having an outwardly crimped portion and a peened end portion exerting a force on the ceramic member and spring washer therebetween. In the fabrication process, the ceramic member and spring washer are telescoped over the eyelet and into contact with the crimped portion and the end of the eyelet is peened into contact therewith to exert a force thereon.

Abstract: A novel housing structure for a high voltage power supply results in an easily replaceable electrical high voltage bushing. In this an elongated electrode is attached at an end to a support member and extends through an opening in a boundary plate, which is spaced from and supports said support member, and a hollow elongated electrical insulator, the "bushing," ensleeves said electrode and extends through said boundary plate opening to said insulating support means. A film coating is provided on the electrode and a like film coating is provided on the elongated insulator. The voids within the housing are filled with conventional "potting" material. The film coatings are moisture impervious to serve as moisture barriers and are indissoluble in, essentially, and nonadhesive with the potting material to allow detachment of the bushing.

Abstract: A connector-terminal assembly for passing electrical current through a furnace firewall. A one piece insulator fits through a hole in the firewall and is braced to the firewall by a single retainer clip. A connector suitable for high temperature use is slideably mounted in a hole centrally through the insulator and retained therein by the electrical terminals on either end thereof. The insulator is mounted in the firewall independently of the connector mounting in the insulator, and vice versa. The insulator is mounted to the firewall free of compressive stress along the connector axis and the connector is mounted in the insulator free of tensile stress along its axis to allow for heat expansion of both components.

Abstract: A bushing assembly adapted for installation as a feedthrough type of connection in a transformer, switchgear, sectionalizing point or any other application includes a cast conductor element embedded in a body of molded insulating material, and an insert preformed to close tolerances in said cast element and adapted to cooperate with a section of an insulating material mold to seal the mold during molding of the body of insulating material.

Abstract: An electrical feedthrough for connecting electrical components on opposite sides of a bulkhead includes a conductive sleeve, and disposed within the sleeve is a dielectric body carrying an electrical conductor extending longitudinally of the sleeve. The electrical conductor is physically spaced and electrically insulated by the dielectric body from the conductive sleeve, and a part of the dielectric body is physically deformed to effect a hermetic seal with the conductive sleeve and/or electrical conductor. In the method of assembly of the electrical feedthrough of the subject invention, a part of the dielectric body is deformed to effect the hermetic seal.

Abstract: Disclosed is an insulative header assembly with electrical feed through terminals therein. The header includes at least one tapered opening therethrough. A depression or counterbore at the narrow end of the tapered opening forms a shoulder therewith. A metallic one-piece feedthrough terminal with a tapered portion is forced into the tapered opening tightly enough to form a seal therewith. Part of the tapered portion extends into the recess or depression. The metal in the depression is flared to overlap the shoulder and thus securely fix the terminal in place. There are splines in the depression, and the metal that is forced into the depression conforms to the shape of the splines and thus rotatably restrains the terminal in the header.

Abstract: A tapered electrical pass-through connector for allowing conductors to go through a hole in a vessel wall from the high pressure side to the low pressure side and capable of withstanding up to 150,000 PSI from the high pressure side. The small diameter end of the tapered connector is inserted into the vessel hole and the conductors extend through holes in the connector. A bonding agent surrounds the conductors in the connector holes and the holes are tapered and dimensioned to a small diameter to prevent the bonding agent from being blown out of the holes under pressure.

Abstract: An electrical bushing assembly suitable for operation in an ambient temperature of 150.degree. C. The electrical bushing assembly includes a ferrous electrical conductor insulated with wholly aromatic polyamide fibers impregnated with silicone oil and surrounded by a ceramic insulating member which includes Al.sub.2 O.sub.3.

Abstract: Method of passing an uninsulated, relatively rigid, conductor through an opening in a non-conductive housing wall. The conductor has a cross-section which is substantially less than the cross-section of the opening yet is firmly maintained in place by means of a rivet which presses a portion of the conductor against a surface surrounding the opening.