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Class 174/31R - Axial passage and/or through wall or plate


Subclass of Class 174 - Electricity: conductors and insulators
Definition: Structures (1) having a passage arranged substantially axially
No. of patents: 61
Last issue date: 04/22/2008


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NumberTitleIssue Date
7361207System and method for electrostatically depositing aerosol particles
A system useful for electrostatic deposition (ESD) of aerosol particles and methods of depositing the aerosol particles onto a substrate are disclosed. The ESD system and the method of the present invention are useful for electrostatically depositing nanoparticles p...
04/22/2008
7116007Protecting medium voltage inductive coupled device from electrical transients
There is provided a method for protecting loads associated with power distribution system inductive signal couplers. The method includes (a) providing an inductive signal coupler having a first winding in series with a line conductor of a power distribution system, ...
10/03/2006
6963025Wildlife protector guard for high voltage electrical termination
A wildlife protector guard is provided for a high voltage electrical termination in a high voltage electrical power distribution system. The guard is provided by an electrically insulating shell having a central section concentrically surrounding an axial end of the...
11/08/2005
6685231Insulation piece for a pipeline
An insulation piece for a pipeline conveys electrically conductive liquids from a point that is at a ground potential to a point connected to a high voltage. The liquid is conveyed discontinuously by portion-by-portion transport by the carriage flow of th...
02/03/2004
6515232High voltage bushing and method of assembling same
A high voltage bushing comprising an insulator enclosing a conductor and a mounting flange slid over the insulator. The outer surface of the insulator defines a flange seat for contacting one end of the mounting flange. A gasket may be positioned on the f...
02/04/2003
6452109Bushing for high electrical voltage
A bushing for a high electric voltage has a casing through which a central conductor is passed so that it is electrically insulated. Conducting liners spaced a distance apart are arranged concentrically around the central conductor, a combination which fu...
09/17/2002
6291774Wildlife guard cover
A wildlife guard for electrical power distribution equipment has two hingedly mounted sections which close together to form a protective cover at the top of an insulator bushing on electrical equipment. The wildlife guard is adapted by its structure to fi...
09/18/2001
6150613Power transformer and coupling means
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 ...
11/21/2000
6140573Hollow core composite bushings
An improved hollow core composite bushing for use in, for example, a dead tank circuit breaker, is smaller and lighter and offers other advantages over previous designs. The hollow core bushing includes therein a fiber reinforced plastic (FRP) elongated t...
10/31/2000
6093886Vacuum-tight continuous cable feedthrough device
A vacuum-tight cable feedthrough device includes a metallic first flange that is penetrated by a slot. Passing through the slot is a flat stripline cable that includes a plurality of conductive signal channels encompassed by a dielectric material on whose...
07/25/2000
5723814Supporting insulator having a two-part interlocking outer ring
A supporting insulator for installation between connecting flanges of a gas-insulated switching installation is provided with an outer ring, with an insulator body which is in the form of a disk and which is formed of a hardened cast resin, and with at le...
03/03/1998
5389734Device for protecting the end of an electric cable against the effects of insulation breakdown
A device for protecting the end of a high or very high tension electric cable having synthetic insulation from the effects of insulation breakdown, comprises an insulator and a metal enclosure defining a gastight chamber around said end, which chamber con...
02/14/1995
5270487Grommet
A grommet is provided with a small diameter cylindrical portion defining a first aperture and an expanded diameter portion defining a second aperture which is in communication with the first aperture for inserting a wire harness. In the second aperture of...
12/14/1993
5198622Condenser body for the field control of the connection of a transformer bushing
The invention relates to a condenser body for field control in transformer bushings and the connection of the body to the conductor of a transformer winding for transformers used in HVDC converter plants. The condenser body is arranged as a solid of revol...
03/30/1993
4965407Modular bushing
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 elec...
10/23/1990
4956903Method of producing an insulating bushing free from any risk of explosion
A method of producing a ceramic insulating bushing to be filed with dielectric gas under pressure and which is free from any risk of explosion, comprising the following operations: (1) manufacturing a ceramic bushing (10) having an inside surface which is ...
09/18/1990
4886945Replaceable bushing and contact assembly for blade type air insulated switchgear
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 ...
12/12/1989
4780577Electrical bushing of a gas insulated electrical apparatus
An electrical bushing of a gas insulated electrical apparatus comprises an insulating tube, a central conductor extending through the insulating tube and a cylindrical shield disposed between the central conductor which is electrically connectable to grou...
10/25/1988
4774385Electrical bushing for use with a gas insulated electrical apparatus
An electrical bushing for use with a gas insulated electrical apparatus comprises an insulating tube, a central conductor extending through said insulating tube, a grounded cylindrical shield disposed between the central conductor and the insulating tube,...
09/27/1988
4700014Cap for insulator support housing
A cover cap (40) is provided for covering the open end of a support insulator (38) having a discharge electrode hanger rod (28) passing coaxially therethrough. The cover cap (40) comprises a top (42) and a sloping side wall (44) extending coaxially outwar...
10/13/1987
4609775Bushing including an expansion compensation seal
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...
09/02/1986
4584429Electrical assembly including a metal enclosure and a high voltage bushing
A high voltage feed-through bushing has a conductive gasket to connect a conductive coating to a metal enclosure. A central conductor rod of the bushing is surrounded by an insulating tube which is surrounded by a tubular conductor to establish a floating...
04/22/1986
4540848Electric high-voltage earthquake-resistant bushing
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) ...
09/10/1985
4528421Porcelain gas-filled bushing with electrodes for moderating the electric field
A porcelain gas-filled bushing wherein a central conductor passes through a porcelain tube which is filled with an insulating gas, a fitting flange which is fastened to one end of the porcelain tube is grounded, and an electrode which encircles the centra...
07/09/1985
4523052Gas-insulated bushing
A gas-insulated bushing including an insulating tube filled with an insulating gas, a central conductor centrally arranged within the insulating tube, and a capacitor unit connected to the central conductor and partitioning the interior of the insulating ...
06/11/1985
4500745Hybrid electrical insulator bushing
A bushing for insulating a conductor in a high-voltage electrical transmission system is fabricated of paper and metallic foil disposed as coaxial layers about the conductor. At one end of the bushing, the paper is impregnated with oil. At the opposite en...
02/19/1985
4484019High voltage RF feedthrough bushing
Described is a multi-element, high voltage radio frequency bushing for trmitting RF energy to an antenna located in a vacuum container. The bushing includes a center conductor of complex geometrical shape, an outer coaxial shield conductor, and a thin-wa...
11/20/1984
4477692High voltage terminal bushing for electrical apparatus
This high-voltage terminal bushing comprises a tubular shell of electrical insulating material having a passageway extending between its ends and an electrical conductor within the passageway that has an external surface spaced from the internal surface o...
10/16/1984
4458101Gas-insulated epoxy bushing having an internal throat shield and an embedded ground shield
A gas-insulated bushing comprises an elongated epoxy insulating shell having a grounded mounting plate secured at one end thereof and an electrical connection terminal secured at the other end thereof. An inner conductor at high voltage is disposed within...
07/03/1984
4454373Bushing for gas-insulated electrical equipment
A bushing in which a conductor penetrates through the center of a porcelain tube of which the one end is closed, the other end of the porcelain tube is closed by a cone-shaped insulation spacer which protrudes into the porcelain tube and which also suppor...
06/12/1984
4431859Bushing for gas-insulated electrical equipment
The invention comprises a bushing surrounding an electrical conductor, including a porcelain tube which employs a gaseous insulator, an insulating tube disposed with a space of small volume set relative to the inner periphery of the porcelain tube, the sm...
02/14/1984
4426547Gas-filled insulating bushing having chambers separated by an insulating partition
A gas-filled insulating bushing includes a center conductor and a porcelain tube enclosing therein an insulating gas. A tubular insulating partition is arranged adjacent to an inner wall of the porcelain tube to define the space therein into two spaces co...
01/17/1984
4424402Gas-insulated bushing
An improved gas-insulated bushing having a high withstand voltage and an increased capacity to cool a conductor, wherein the upper end portion of a potential-controlling capacitor in the form of a stopped tube is directly airtightly fitted to the outer su...
01/03/1984
4403105Gas-insulated bushing having finger contact expansion joint
A gas-insulated bushing includes an elongated hollow insulating shell with an elongated inner conductor disposed therein spaced apart from the insulating shell, with an insulating gas electrically insulating the conductor from the insulating shell. A term...
09/06/1983
4403104Gas-insulated bushing having minimized throat diameter
A low-pressure gas-insulated bushing is provided including an elongated, hollow insulating shell having a terminal end and a throat end with a opening therethrough. A bushing terminal is secured to the shell terminal end, and an insulating gas at low pres...
09/06/1983
4401841Explosion resistant insulator and method of making same
An electrical insulator assembly and method of manufacturing same, having a generally cylindrical or conical body portion formed of a breakable cast solid insulation system and a reinforcing member having a corrugated configuration and formed of a web or ...
08/30/1983
4392015Condenser-type electrical bushing with central electrode aligning wedging blocks
The present invention is a condenser-type electrical bushing having a mounting flange, an upper weather casing connected to the mounting flange, a central electrode and a lower casing, both supported by the upper weather casing. A condenser is wound about...
07/05/1983
4387266Foil-insulated high voltage bushing with embossed potential control inserts
A high voltage insulating bushing is formed of wound insulating foils and is provided with conductive parts which are at different electrical potentials and with a wound insulating body arranged between the conductive parts. The wound insulating body cont...
06/07/1983
4370514High-voltage bushing with double-layered potential control inserts
A high voltage insulating bushing formed of wound insulating foils is provided with a double layer material interposed between preselected windings of the insulating foils. The double layer material is formed of insulating material which has been laminate...
01/25/1983
4362897High-voltage bushing with layers of preshrunk embossed insulating foils
A high voltage insulator bushing is formed of wound insulating foils and is provided with conductive parts which are at different electric potentials and with a wound insulator body arranged between the conductive parts. The wound insulator body contains ...
12/07/1982
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