Bushing Type Patents (Class 174/152R)
  • Patent number: 6158609
    Abstract: A housing for a device mountable on a mounting surface has a housing element provided with two mounting flanges each having a passage adapted to extend substantially perpendicularly to the mounting surface and formed to receive a mounting bolt, two bushings extending through the mounting flanges and surrounding the passages, the bushings being composed of metal and injection molded with a material of the housing element, each of the passages being formed as an elongated hole with a width adapted to correspond to a diameter of the bolts, the bushings corresponding to a contour of the passages and surrounding the passages with a radial distance therefrom, the bushings being provided with peripheral formations which are filled with the material of the housing element, and the bushings at an inner peripheral side being free from the material of the housing over a part of an axial length of the bushings and a lower side of the mounting flanges.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: December 12, 2000
    Assignee: Robert Bosch GmbH
    Inventor: Harry Kaiser
  • Patent number: 6156979
    Abstract: The invention concerns a bushing device (12) designed to be fitted through a hole in a wall including a body (20) and a cover (18) each adapted to be disposed on one side of the wall and rod and connection (14, 16) for connecting the body (20) and the cover (18) to grip said wall between them, the body (20) and the cover (18) including aligned passages (22, 47) adapted to receive a conductive rod (14). The cover (18) includes an inner core (44) delimiting the passage (47) for receiving the rod (14) and an outer sheath (46) covering the lateral wall of the inner core (44), the inner core (44) and the outer sheath (46) being made of different materials.
    Type: Grant
    Filed: September 2, 1998
    Date of Patent: December 5, 2000
    Assignee: Pioch S.A.
    Inventor: Olivier Pioch
  • Patent number: 6150613
    Abstract: A power transformer is provided with a housing having a plurality of apertures for receipt of a bushing well of a bushing assembly. Each bushing assembly includes a bushing well adapted to be secure in one aperture of the power transformer, and a bushing adapted to be connected to a terminal in the bushing well to permit the conducting of electric current between the bushing assembly and the transformer. The bushing assembly further includes a connector for connecting the bushing conductor to a terminal positioned in the bushing well. The power transformer includes a cap to cover and isolate the unused bushing wells. The cap is preferably a plate structure that attaches to the lip of the bushing well and uses the dielectric formed by the air enclosed by the cap and the bushing well to prevent sparking over to adjacent sites, corona discharge, and accidental contact with a live terminal therein, and to guards against contamination of the bushing well.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: November 21, 2000
    Assignee: Jersey Central Power & Light Co.
    Inventor: Scott J. Bergstrom
  • Patent number: 6051794
    Abstract: A waterproofing member for a wire harness connecting portion of a motor for driving a window regulator of a vehicle is constructed such that it includes an opening being provided at each axial direction end portion of the waterproofing member, a mounting portion provided at one of the axial direction end portions of the waterproofing member, and fixed to the wire harness connecting portion so as to seal the wire harness connecting portion; a press-fit portion provided at the other of the axial direction end portions of the waterproofing member, and press-fit against a peripheral wall of the through-hole of the door panel so as to seal the through-hole; and further includes an elastic portion which is formed at an axial direction intermediate portion between the mounting portion and the press-fit portion and is formed so as to be elastically deformable along an axial direction of the waterproofing member, which elastic portion being able to change relative positions of the mounting portion and the press-fit po
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: April 18, 2000
    Assignee: Asmo Co., Ltd.
    Inventors: Manabu Katou, Tatsuya Suzuki
  • Patent number: 5952617
    Abstract: A power transformer is provided with a housing having a plurality of apertures for receipt of a bushing well of a bushing assembly. Each bushing assembly includes a bushing well adapted to be secure in one aperture of the power transformer, and a bushing adapted to be connected to a terminal in the bushing well to permit the conducting of electric current between the bushing assembly and the transformer. The bushing assembly further includes a connector for connecting the bushing conductor to a terminal positioned in the bushing well. The power transformer includes a cap to cover and isolate the unused bushing wells. The cap is preferably a plate structure that attaches to the lip of the bushing well and uses the dielectric formed by the air enclosed by the cap and the bushing well to prevent sparking over to adjacent sites, corona discharge, and accidental contact with a live terminal therein, and to guards against contamination of the bushing well.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: September 14, 1999
    Assignee: Jersey Central Power & Light Company
    Inventor: Scott J. Bergstrom
  • Patent number: 5808536
    Abstract: A power transformer is provided with a housing having a plurality of apertures for receipt of a bushing well of a bushing assembly. Each bushing assembly includes a bushing well adapted to be secured in one aperture of the power transformer, and a bushing adapted to be connected to a terminal in the bushing well to permit the conducting of electric current between the bushing assembly and the transformer. The bushing assembly further includes a connector for connecting the bushing conductor to a terminal positioned in the bushing well. The power transformer may include a cap to cap the unused bushing wells. The cap is, preferably, a plate structure that attaches to the lip of the bushing well and uses the dielectric formed by the air enclosed by the cap and the bushing well to prevent sparking over to adjacent sites and corona discharge, to prevent accidental contact with the live terminal therein, and to guard against contamination of the well.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: September 15, 1998
    Assignee: General Signal Corporation
    Inventors: Isaac J. Sandlin, Jr., Hyeong Jin Sim, Jerry Woodward
  • Patent number: 5808858
    Abstract: A gas-tight and/or oil-tight bushing is provided for attachment to a capacitor housing and for providing a connection to a capacitor. The bushings are composed of metal pins electrically insulated from the housing as well as insulators for increasing the leakage distance. The insulators have sections that extend into the inside of the housing to which a cooperating member that connects the bushing to the housing by clamping is secured. An O-ring is arranged between the insulator and the metal pin for sealing. The O-ring is preferably surrounded by a plastic sleeve that prestresses the O-ring for an improved sealing function.
    Type: Grant
    Filed: February 27, 1997
    Date of Patent: September 15, 1998
    Assignee: Siemens Matsushita Comp. GmbH & Co. KG
    Inventor: Harald Vetter
  • Patent number: 5783772
    Abstract: A novel leakage radiation preventing element effectively prevents radio waves from being radiated from an electronic appliance, without depending upon a capacitor or a choke coil. The leaked current I.sub.os and I.sub.or generated from a hole or a gap formed in a casing or a chassis is introduced into a wave guide path and then attenuated by radio wave absorption function of a magnetic substance disposed therein. A coaxial conductor (2) is passed through a hole (107) formed in a chassis (3). The wave guide path (104) is formed between the chassis and a conductive disk (101) electrically floated from the chassis. A radially outward end of the wave guide path (i.e., the outer circumferential end of the conductive disk) is shorted to the chassis at high frequency, and further the inside of the wave guide path is filled with a ferrite ring (102).
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: July 21, 1998
    Assignee: Uro Denshi Kogyo Kabushiki Kaisha
    Inventors: Michiharu Takahashi, Hitoshi Komine, Yuji Ichikawa
  • Patent number: 5774035
    Abstract: A current transformer for a load switch which has an interior construction tightly engaged with a main bushing therein, allows a voltage in a cable to be detected by forming an engaging hole, communicated with a conductive socket of the main bushing, on a portion of an outer circumferential surface thereof, and which has a current transformer coating casing, made of a rubber material, for thereby diminishing a thickness of the current transformer, includes a core in a ring shape, a coil winding the core, a rubber coating member for tightly covering the core and the coil therein, and coil terminals connected to both ends of the coil. The rubber coating member includes a lower coating part for tightly covering a base unit of the main bushing, and an upper coating part for tightly covering a jaw unit of the main bushing, as well as the coil and the core.
    Type: Grant
    Filed: June 26, 1997
    Date of Patent: June 30, 1998
    Assignee: LG Industrial Systems Co., Ltd.
    Inventor: Seok Won Lee
  • Patent number: 5742489
    Abstract: A transformer housing includes a main compartment enclosing the transformer and an auxiliary compartment. The power source is connected to the primary windings in the auxiliary compartment and the electrical load is connected to the secondary windings in the main compartment. Insulating bushings mounted to the walls of the main compartment support the connections between the secondary windings and the load, maintaining these electrical connections a sufficient distance away from the walls of the housing, and each other, to substantially prevent electrical leakage from the connections to the housing or each other.
    Type: Grant
    Filed: December 5, 1994
    Date of Patent: April 21, 1998
    Assignee: France/Scott Fetzer Company
    Inventor: David H. Riesland
  • Patent number: 5726390
    Abstract: An electric bushing is provided with a capacitive voltage-tapping electrode having a simplified design as an insulating ring-shaped plastic body. The plastic body is coated with conductive lacquer and has supporting feet which engage on a shielding body belonging to the bushing. One of the supporting feet bears a connecting element linked to the conductive layer.
    Type: Grant
    Filed: July 21, 1995
    Date of Patent: March 10, 1998
    Assignee: Siemens Aktiengesellschaft
    Inventors: Friedrich Schweppe, Helmut Spaeck
  • Patent number: 5635674
    Abstract: An assembly of heat shrink tubes provides an interface across a barrier, such as a boundary of a chamber of a transformer housing. Each of the tubes has an axial aperture for receiving at least one respective electrical lead, such as ones extending from a transformer disposed in the chamber of the transformer housing to a connection outside the chamber. The interface preferably also includes a plurality of bushings, wherein each of the bushings is disposed in the axial aperture of a respective one of the heat shrink tubes. A support member is preferably included so that the heat shrink tubes are disposed adjacent a plurality of holes defined through the support member. An adhesive fluid tightly connects the heat shrink tubes to the support member. The chamber of the transformer housing includes a wall having an inner surface, against which an insulating liquid is disposed, and an outer surface, against which a gas is disposed.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: June 3, 1997
    Inventor: Donald W. Owen
  • Patent number: 5623125
    Abstract: A post-mounted device for mounting over an electrical transformer output post extends through an orifice in a wall of the electrical transformer with the post-mounted device having a body positioned on a first side of the wall and a cover positioned on a second side of the wall, with fasteners used to clamp the wall between the body and the cover. The post-mounted device includes a portion that restricts pivotal motion of the cover relative to the wall and a gasket provided in this portion seals the cover against the wall. The cover also includes a stepped cylindrical opening at an end of the cover opposite from the end of the cover that seals against the wall, with the stepped cylindrical opening containing a gasket in its smaller diameter portion for radially sealing against the output post, and a stepped spacer that is partially contained within the smaller diameter portion and partially contained within the larger diameter portion of the stepped cylindrical opening.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: April 22, 1997
    Assignee: Pioch
    Inventor: Olivier Pioch
  • Patent number: 5561273
    Abstract: An electrical cable holding case that can prevent a charged resin material for sealing from cracking by blocking the sharp bending of electrical cables when they are taken out of the case is provided. An electrical cable holding case includes a cylindrical case main body and a lid-like rear holder having electrical insertion holes and resin charging holes. Electrical cables taken out of the case main body via the electrical cable insertion hole of the rear holder are embedded by resin molding from the case main body to the outer surface of the rear holder to hold the electrical cables so as to be watertight. Electrical cable support walls are arranged at the edges of the electrical cable insertion holes outside the rear holder.
    Type: Grant
    Filed: November 9, 1994
    Date of Patent: October 1, 1996
    Assignee: Yazaki Corporation
    Inventor: Makoto Yamanashi
  • Patent number: 5548089
    Abstract: A bushing wherein the voltage stress across the surface of the bushing is alleviated by placement of a layer of insulating material in direct contact with the surface. The insulating material is preferably a high-voltage type, heat-shrinkable, halogen-free polyolefin, and is preferably fully shrunk to conform to the contours of the outer surface of the bushing.
    Type: Grant
    Filed: January 13, 1994
    Date of Patent: August 20, 1996
    Assignee: Cooper Industries, Inc.
    Inventor: Miguel B. Yamat
  • Patent number: 5518819
    Abstract: The present invention is related to a rubber vibration insulator comprising a rubber composition for a rubber insulator wherein at least one selected from unsaturated fatty acid amide and N-substituted fatty acid amide is contained. For this reason, friction coefficient can be greatly reduced in wide temperature range including low temperature range and high temperature range, not in a narrow temperature range near to a normal temperature. Furthermore, the above unsaturated fatty acid amide can be easily melted in a rubber compound so as to be mixed into a normal kneading operation resulting in a superior workability.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: May 21, 1996
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Akihiro Shibahara, Hajime Kato
  • Patent number: 5500490
    Abstract: The connector permits wires to be used to conduct signals through a fluid-tight boundary. The wire sheath is removed around a medial portion of the wire to expose the surface of the inner conductor. A sealing material contacts the inner conductor surface and also the adjacent sheath surfaces, thereby defining a serpentine boundary which inhibits fluid leakage along the wire surface.
    Type: Grant
    Filed: January 10, 1994
    Date of Patent: March 19, 1996
    Assignee: Borg-Warner Automotive, Inc.
    Inventors: Chester E. Moyers, Robert L. Lenz
  • Patent number: 5483023
    Abstract: A high voltage bushing includes an insulator sleeve adapted to be fitted over a conductor; an annular metal mounting flange telescoped over the sleeve, the mounting flange having a substantially smooth, axially extending cylindrical portion and a radial portion located at one end of the axial portion; an annular, axially extending epoxy layer between the mounting flange cylindrical portion and the insulator sleeve, the epoxy layer having a thickness of at least about 0.50 inch; and an annular ferrule sealing the juncture of the porcelain sleeve and the mounting flange on a side of the radial portion remote from the axial portion. The annular ferrule has a radial section engaging the radial portion of the mounting flange, and an axial section soldered to the porcelain sleeve.
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: January 9, 1996
    Assignee: General Electric Co.
    Inventor: Gary R. Barnes
  • Patent number: 5448017
    Abstract: A grommet, to be installed on a wire harness penetrating through two panels, comprising: a first member (11) and a second member (12), wherein the wire portion (21) is inserted into the large-diameter portion (15), the rib (22) is brought into contact with the stepped portion (16), and the cut-out portion (17) is engaged by the locking projections (23, 24) by adjusting the lengthwise and circumferential directions of the wire portions (14) and (21), so as to connect the wire portion (14) of the first member (11) and the wire portion (21) of second member (12) with each other.
    Type: Grant
    Filed: December 13, 1993
    Date of Patent: September 5, 1995
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Hiroyuki Nakajima, Hiroshi Watanabe
  • Patent number: 5408740
    Abstract: The firewall feed-through adapter of the present invention, and method for making, is an assembly utilizing an aluminum oxide insulator which is specially machined to interfit with the outer insulation of the conductors. The firewall shell is specially designed to compress the insulator about the conductors and their wire insulation to insure a complete sealing of the firewall side of the adapter. The shell of the adapter is machined both to reduce the labor involved in its manufacture, as well as to provide an internal frusto-conic surface which is used to compress the insulation about the conductors and their wire insulation. The action of securing the shell to the back plate simultaneously seals the shell against the firewall while sealing the insulation against the conductors and the inner surfaces of the shell.
    Type: Grant
    Filed: March 26, 1993
    Date of Patent: April 25, 1995
    Assignee: J-Tech
    Inventor: James S. Dee
  • Patent number: 5410102
    Abstract: A cable bushing which provides for an electromagnetically tight guidance of a shielded electrical cable, the jacket of which has been stripped from the shield in the bushing area, and the cable led through an opening in a partition, wherein electrically conductive part shells are mounted to the exposed part of the cable shield and an electrically conductive sleeve is slipped over the part shells. The sleeve is provided with a cover disk, which forms an integral part of the sleeve, with an annular disk which can be radially attached to the sleeve and incorporates a radial slot, with a threaded nut which can be screwed to the sleeve and with a counter-nut acting on the threaded nut. With the exception of the cover disk and the ring disk, all components of the cable bushing have smaller outer dimensions than the inner dimensions of the partition opening. In this way the cable bushing can be preassembled with a cable assembly before being mounted to the partition.
    Type: Grant
    Filed: August 13, 1992
    Date of Patent: April 25, 1995
    Inventors: Eric Guiol, Konrad Buckel, Helmut Rockl
  • Patent number: 5387448
    Abstract: An explosion-proof porcelain housing for a gas-filled insulating apparatus includes a hollow porcelain housing body having a tapered inner surface, and a resin lined on the inner surface of the porcelain housing body. The thickness of the resin lining decreases along the tapered inner surface.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: February 7, 1995
    Assignee: NGK Insulators, Ltd.
    Inventors: Akihiro Watanabe, Keiichi Asai
  • Patent number: 5382856
    Abstract: A collector terminal and hydrogen seal assembly for insertion within a radial hole in a generator rotor and connectable to a conductor bar located within an axial bore formed in the rotor, the seal assembly comprising a substantially cylindrical terminal stud portion having threaded upper and lower sections and a smooth intermediate section; insulation wrapped about the intermediate section; a spacer block located between the seal elements and defining an annular space surrounding the insulation; and a conduit in the terminal stud adapted to introduce compressed air from outside the generator rotor to the annular space for testing the integrity of the seal elements.
    Type: Grant
    Filed: December 9, 1992
    Date of Patent: January 17, 1995
    Assignee: General Electric Co.
    Inventors: Richard J. Keck, Kirk G. O'Brien, Michael J. Bigelow
  • Patent number: 5352853
    Abstract: A terminal case is sealingly fitted in an opening formed in a case of a transmission. The terminal case is formed with a partition wall by which the interior of the case is divided into inside and outside bore parts which are respectively exposed to the interior of the transmission and the outside of the transmission. The partition wall is formed with a plurality of apertures through which electric wires extend. Each of the electric wires within the outside bore part is provided with an enlarged stopper member whose size is larger than that of the corresponding aperture of the partition wall. A plastic adhesive is packed in the outside bore part in a manner to surround all the stopper members.
    Type: Grant
    Filed: September 22, 1992
    Date of Patent: October 4, 1994
    Assignee: Jatco Corporation
    Inventor: Kazuo Takagi
  • Patent number: 5342998
    Abstract: A terminal bushing which has (a) an elongated central conductor made by a powder metallurgy process from metal particles sintered together at elevated temperatures after being compacted under pressure and (b) a tubular shell of polymeric insulating material molded under high within a mold pressure about the central conductor and forming a joint with the central conductor that has a high resistance to leakage along the conductor. The central conductor includes at opposite ends of the molded tubular insulating shell mold-interface regions that are formed by the powder metallurgy process and are located to interface with and to fit tightly within the mold that is used for molding the insulating shell, thereby limiting to low values the quantity of pressurized polymer ejected about the mold-interface regions during the molding.
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: August 30, 1994
    Assignee: General Electric Company
    Inventors: Michael G. Nolte, Gary D. Davis, Ronny D. Jergenson, Robert W. Scheu, Timothy G. Tillery
  • Patent number: 5281767
    Abstract: An improved, failure-resistant, low mechanical stress electrical connector bushing (10) is provided which includes an elongated, central metallic conductor rod (12) with an insulative epoxy body (14) cast about the central rod (12). The rod is of substantially constant diameter throughout its length, and includes a male connection end (16) and an opposed female connection end (18). The connection end (18) presents an upset, integral, cold-forged, radially expanded terminal portion (20) having a diameter greater than the constant diameter rod (12), and presents a butt end face (24). Stress analysis confirms that the bushing (10) develops reduced, mechanical thermally induced stresses, as compared with a prior design.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: January 25, 1994
    Assignee: A.B. Chance Company
    Inventors: Edward L. West, L. Ronald Beard
  • Patent number: 5227587
    Abstract: A hermetic terminal assembly arrangement for an opening extending through a wall housing panel wherein the opening periphery is threaded to adjustably receive an externally threaded annular sleeve through which a current conducting pin extends, the terminal assembly arrangement including a first seal between the pin and annular sleeve and a second compressible seal between the sleeve and housing.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: July 13, 1993
    Assignee: Emerson Electric Co.
    Inventor: F. Dieter Paterek
  • Patent number: 5200578
    Abstract: A feedthrough bushing for a high voltage diode provides for using compression sealing for all sealing surfaces. A diode assembly includes a central conductor extending through the bushing and a grading ring assembly circumferentially surrounding and coaxial with the central conductor. A flexible conductive plate extends between and compressively seals against the central conductor and the grading ring assembly, wherein the flexibility of the plate allows inner and outer portions of the plate to axially translate for compression sealing against the central conductor and the grading ring assembly, respectively. The inner portion of the plate is bolted to the central conductor for affecting sealing. A compression beam is also bolted to the central conductor and engages the outer portion of the plate to urge the outer portion toward the grading ring assembly to obtain compression sealing therebetween.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: April 6, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: John P. Brucker
  • Patent number: 5175903
    Abstract: A drive connection for the arm (2) of a windscreen wiper comprises a metallic wiper arm (2), a spindle (5) by which it is driven and means (7) for electrically insulating the wiper arm (2) from the spindle (5), thus electrically isolating the arm (2) and blade of the wiper from the rest of the vehicle.
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: January 5, 1993
    Assignee: Trico Products Corporation
    Inventor: Martyn Curtis
  • Patent number: 5092798
    Abstract: An electrical bushing for connection with an electrical apparatus is disclosed. The electrical bushing includes a bushing well which defines an internal cavity, and an electrical conductor having a first end for electrical connection with the electrical apparatus and having a second end extending within the internal cavity. A replaceable stud is electrically connected to the second end of the electrical conductor, and the bushing well further includes a guide flange. The guide flange extends within the internal cavity around the second end of the electrical conductor such that it is spaced from the second end, and guides the stud into connection with the second end of the electrical conductor.
    Type: Grant
    Filed: April 30, 1991
    Date of Patent: March 3, 1992
    Assignee: Cooper Power Systems, Inc.
    Inventor: Frank J. Muench
  • Patent number: 5077450
    Abstract: A high-voltage test terminal for interconnection between high-voltage power lines and the bushing stud member of a transformer or reactor. An insulator component of the terminal is placed in compression rather than tension, the terminal having a substantially reduced moment arm to withstand angular forces which are created upon interconnection between the power lines and the stud member. Metallic end fittings for the insulator serve to maintain the insulator in permanent compression and provide ready disconnection of the bus bars of the terminal for determination of induced electrical currents such as by Doble testing. The insulator is mounted horizontally between the end fittings and between the power lines in substantially parallel and horizontal alignment therewith, and eliminates the torsional stresses which have been generated previously with upright post-type insulators.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: December 31, 1991
    Inventor: Masoud Rafiee
  • Patent number: 5015895
    Abstract: Method and apparatus for providing electrical insulation and hydrogen leakage resistance functions required on a radial lead portion of a field winding assembly for rotors of hydrogen cooled turbine-generators. A glass cloth tube impregnated with an epoxy resin binder is machined to desired tolerances to provide a controlled interference fit over the radial lead conductor outer surface. A coating of the epoxy resin or insulating varnish may be brushed on the interface surface. The pre-machined insulating tube not only prevents hydrogen gas from entering the rotor bore area, but also electrically insulates the rotor field windings from the rotor shaft.
    Type: Grant
    Filed: January 4, 1990
    Date of Patent: May 14, 1991
    Assignee: Westinghouse Electric Corp.
    Inventor: Alan L. Obley
  • Patent number: 4990723
    Abstract: A bulkhead connector assembly for supporting a bus bar as it passes through a bulkhead including a rectangular portion having a substantially rectangular cross section and including a rectangular passageway extending therethrough and a circular portion having a substantially circular cross section and including a circular passageway extending therethrough and in communication with the rectangular passageway of the rectangular portion. A mounting flange which is integral with the rectangular and circular portions is disposed intermediate of the rectangular and circular portions for mounting the assembly to a bulkhead. The circular passageway of the circular portion has a plurality of shoulders within the circular passageway with the shoulders defining a rectangular passage within the circular passageway which substantially corresponds to the rectangular passageway of the rectangular portion for mounting and supporting a bus bar as it passes through a bulkhead.
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: February 5, 1991
    Assignee: General Motors Corporation
    Inventors: Rick P. Ziberna, Timothy D. Kaptur
  • Patent number: 4972049
    Abstract: An electrical apparatus comprising a container adapted to contain an electrical mechanism, the container including a wall having an outer surface and having therethrough a bore, a bushing including a contact adapted to be connected to the electrical mechanism, a portion extending through the bore, and a surface facing the outer surface of the wall and having therein an endless recess, the recess surrounding the portion and having a volume, an endless gasket located in the recess, surrounding the portion, and having a volume when the gasket is uncompressed that is less than the volume of the recess, and studs for securing the bushing to the container and for compressing the gasket between the bushing and the outer surface of the container.
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: November 20, 1990
    Assignee: Cooper Power Systems, Inc.
    Inventor: Frank F. Muench
  • Patent number: 4965407
    Abstract: A bushing system for high voltage electrical equipment includes a weathershed with integral annular shirts molded around an electrical conductor. The weathershed has a cavity at its base for mating with the opening in the housing for the high voltage electrical equipment. A dielectric gas in the housing communicates with the cavity in the weathershed. A flange and seal are provided at the base of the weathershed for sealingly connecting the bushing system to the housing. A secondary ground may also be provided.
    Type: Grant
    Filed: December 9, 1988
    Date of Patent: October 23, 1990
    Assignee: Cooper Industries, Inc.
    Inventor: Sidney R. Hamm
  • Patent number: 4956525
    Abstract: An electrical insulating bushing and a method of fabrication with an electrical device having a cabinet with an outer wall and a bushing-receiving aperture in the wall. The bushing includes an elongated body surrounding a central conductor with an annular mounting flange at a mid portion of the insulator body. An interface collar is received in the aperture of the cabinet and is welded to the cabinet wall. Thereafter, the bushing is inserted in the interface collar and is joined thereto with an adhesive. A gasket ring is positioned between the bushing flange and the interface collar prior to the adhesive joinder thereof, so as to augment the fluid-tight seal therebetween.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: September 11, 1990
    Assignee: G & W Electric Company
    Inventor: Robert J. Wilk
  • Patent number: 4927982
    Abstract: A wire channel bushing mountable between two electrical enclosure boxes. The bushing provides a rain-tight channel for wires passing between the boxes and also provides reliable grounding paths for grounding one box to the other.
    Type: Grant
    Filed: April 7, 1989
    Date of Patent: May 22, 1990
    Assignee: Siemens Energy & Automation, Inc.
    Inventors: Donald C. Wight, Keith T. Krueger
  • Patent number: 4924031
    Abstract: A water-tight structure for a multicore cable includes a sealed vessel in which electrical components are arranged, and a grommet having an insertion hole disposed at a multicore cable lead portion of the sealed vessel. The multicore cable is held in the insertion hole of the grommet and has a solder-dipped portion in the grommet which has been bent, a portion of the solder-dipped portion being covered with a metal sleeve.
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: May 8, 1990
    Assignee: Jidosha Kiki Co., Ltd.
    Inventor: Takatoshi Arai
  • Patent number: 4922573
    Abstract: Bushings are embedded within a production drill plate to replicate the hole pattern of a master hole pattern plate. The exterior surface of each bushing is threaded, as is the wall of a receiving hole in the production drill plate. The pitch of the bushing and hole are the same but the pitch diameters are somewhat different so that the threads of the bushing are loosely engaged within the threads of the hole. When the bushing is potted in a properly aligned position, the containment potting material becomes compressed in the thread engagement area thereby resisting axial displacement of the bushing.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: May 8, 1990
    Assignee: Grumman Aerospace Corporation
    Inventors: John M. Miller, Richard O. Barton
  • Patent number: 4886945
    Abstract: Improved switchblade-type, air dielectric switchgear apparatus is provided which utilizes a minimum of supporting insulators and incorporates readily field-replaceable bushing assemblies so that the switchgear apparatus may be serviced in the field using only conventional tools. In preferred forms, the switchgear apparatus includes internal switch assemblies making use of substantially vertically oriented switchblades mounted for pivotal movement about an elevated, generally horizontal axis located above the corresponding stationary contacts. The replaceable bushing assemblies are advantageously mounted at a level for interconnection with the upper ends of associated switchblades, and the assemblies include a conical outermost connection and adapted to receive a line connecting elbow, together with an elongated, inwardly extending, electrically conductive intermediate portion carrying an innermost terminal.
    Type: Grant
    Filed: October 6, 1987
    Date of Patent: December 12, 1989
    Assignee: A. B. Chance Company
    Inventors: Gerald B. Roberts, Edward L. West
  • Patent number: 4791247
    Abstract: An improved electrical bushing is disclosed which includes, in combination, an insulating body of a polyester material, a current-carrying stud, and an adhesive coating applied to the grooved peripheral surface of the stud. The bushing is manufactured by applying the adhesive coating to the peripheral surface of the stud. The polyester insulating body is then molded about the stud. Heast is applied to concurrently cure the polyester body and adhesive coating to achieve a bonded, fluid-tight seal between the stud and the insulating body.
    Type: Grant
    Filed: April 13, 1988
    Date of Patent: December 13, 1988
    Assignee: General Electric Company
    Inventors: Philip A. Cacalloro, Joseph A. St. Jacques
  • Patent number: 4782197
    Abstract: An electrical bushing for use in connection with an electrical apparatus which includes a replaceable stud connector. The replaceable stud has a pair of axially aligned threaded shanks on each side of a flange. The flange on the replaceable stud engages a flange on an electrical conductor in the bushing when one of the threaded shanks of the replaceable stud is threaded into a threaded bore in the electrical conductor, whereby any breakage of the replaceable stud will tend to occur in the other threaded shank.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: November 1, 1988
    Assignee: Westinghouse Electric Corp.
    Inventors: Joseph M. Stunzi, Donald J. Ristuccia
  • Patent number: 4760216
    Abstract: A method for making an electrical bushing having an enlarged intermediate portion and reduced portions at opposite ends. The method is characterized by the steps of mounting an annular flange around one of the reduced portions to form a peripheral gutter adjacent to the one portion, mounting a cap on the other of the reduced portions to form a peripheral gutter adjacent to the other portion, placing a solid solder ring in each gutter, and with the open sides of the gutters upright, heating the solder rings to a molten temperature and cooling the molten solder to below its melting temperature in order to provide a joint between the flange and the one portion and the cap and the other portion.
    Type: Grant
    Filed: January 28, 1987
    Date of Patent: July 26, 1988
    Assignee: Westinghouse Electric Corp.
    Inventors: Peter H. Thiel, James R. Gamble
  • Patent number: 4724284
    Abstract: A high voltage composite member, such as a support insulator or a bushing, comprises a core and a sheath of elastomeric material vulcanized to the core and at least one module of elastomeric material having an external shed and an inner cylindrical surface of predetermined normal diameter. The sheath has circumferentially continuous external bulges overlapping and engaging the ends of the inner surface to hold the module permanently in a desired location on the sheath, the module being substantially free of deforming stress. A sealing material provides a sealed interface between the module and sheath.
    Type: Grant
    Filed: January 27, 1986
    Date of Patent: February 9, 1988
    Assignee: Lapp Insulator Company
    Inventor: Edward S. Wheeler
  • Patent number: 4670625
    Abstract: A bushing arrangement for conveying an electrical conductor through the casing of high voltage electrical apparatus exposed to the weather comprises a rigid member of synthetic resin cast around, so as to be bonded in a gas tight manner to, the conductor, and incorporating an exterior portion protruding outside the casing, the member being enclosed, over at least the major part of its exterior portion, by a plurality of insulting axially-overlapping weather-resistant collars and a stress cone each having a creepage flange or shed, the member being secured to the casing by a flanged collar. The insulating member may be made of a relatively cheap non-weather-resistant epoxy resin and the collars of EPDM rubber.
    Type: Grant
    Filed: July 16, 1986
    Date of Patent: June 2, 1987
    Inventors: Henry S. Wood, John L. Davenport
  • Patent number: 4666164
    Abstract: An aperture, for example a duct having a cable passing through it, is sealed by installing a laminate, comprising an adhesive layer, a heater layer, and a heat-recoverable foam layer, the thickness of which increases on heating, into the gap between the duct wall and the cable with the adhesive layer facing both the wall and the cable. On energizing the heater, the foam increases in thickness and forces the adhesive into sealing engagement with the wall and cable.
    Type: Grant
    Filed: August 21, 1985
    Date of Patent: May 19, 1987
    Assignee: Raychem GmbH
    Inventors: Karlheinz Becker, Bernd Gerlach
  • Patent number: 4656315
    Abstract: An assembly for mechanically connecting an electrical cable to the housing of an electrical device comprises a cable jacket with an annular groove filled with a resinous substance such as polyurethane, the resin forming a prism fitted to an aperture in the device housing. The surface defining the groove is roughened and provided with a multiplicity of teeth.
    Type: Grant
    Filed: May 23, 1983
    Date of Patent: April 7, 1987
    Assignee: Schaller Automation Industrielle Automationstechnik KG
    Inventors: Peter Rathmachers, Bernd Donner
  • Patent number: 4636581
    Abstract: An apparatus which routes electrical conductors through a sealed opening in a wall using a flexible printed wiring cable is disclosed. The apparatus includes a thermoplastic material injection molded around a flexible printed wiring cable. Within the molded object, the cable contains two sections where cable conductors are not enclosed within flexible printed wiring insulation. The two sections are separated by a third section in which cable conductors are enclosed within insulation. The cable additionally contains an increased amount of conductor material where the cable enters and exits the molded object. Two O-rings are contained within the periphery of the molded object.
    Type: Grant
    Filed: June 24, 1985
    Date of Patent: January 13, 1987
    Assignee: Motorola, Inc.
    Inventors: Thomas A. Roche, Robert E. Edminster
  • Patent number: 4625192
    Abstract: A superconducting apparatus comprises a superconducting coil, a cryogenic fluid for cooling the coil, a vessel for enclosing the superconducting coil and the cryogenic fluid, a current lead penetrating into and supported by the vessel and electrically connected to the superconducting coil, and an electrically insulating tube disposed around the current lead. The insulating tube includes an electrically insulating ring disposed around the current lead between the vessel and the current lead and outside of the vessel for electrically insulating and hermetically sealing between the current lead and the vessel, a hollow electrically insulating cylinder disposed around the current lead, and means disposed between the insulating ring and the cylinder for continuously connecting the ring and the cylinder thereby to substantially close any gap therebetween against electrical discharges therethrough.
    Type: Grant
    Filed: February 20, 1985
    Date of Patent: November 25, 1986
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Takeo Kawaguchi
  • Patent number: 4618351
    Abstract: A device for cleaning of gases of electrically conductive particles, like soot and the like, in particular for cleaning of exhaust gases of fossil fuels, like exhaust gases of Diesel motors and the like, with a coagulator admitted by the gases is suggested, whereby for preventing the formation of a short circuit bridge between electrode and housing of coagulator caused by deposition of agglomerates the insulator which provides for an insulated conduct of electrode through housing is provided with a ring segment at the location where the electrode exits into the inside of the housing extending in axial direction from the insulator, whereby at least one preferable ring like annealing zone is provided thereon. Due to the prevailing temperature of about 450.degree. C. at annealing zone all depositing agglomerates are burned off.
    Type: Grant
    Filed: August 10, 1984
    Date of Patent: October 21, 1986
    Assignee: Robert Bosch GmbH
    Inventors: Friedrich Esper, Thomas Frey