Transformer Bushing Type Or High Voltage Underground Connector Patents (Class 439/921)
  • Patent number: 8641434
    Abstract: An electrical connector feedthru insert assembly may include a connector body having a first leg projecting from the body in a first direction and second and third legs projecting from the body in a second direction substantially opposing the first direction. The first leg may be configured for insertion into a bushing well in a transformer, the bushing well including a conductive stud therein. The first leg may include a longitudinal bore extending therethrough configured for alignment with the conductive stud in the bushing well upon insertion of the first leg into the bushing well, the longitudinal bore having a bolt passage portion and a first shoulder portion. The feedthru insert assembly may further include a bolt sized for insertion into the longitudinal bore and including a tool engagement shoulder portion to engage the first shoulder portion of the longitudinal bore. Application of rotational force to the tool engagement shoulder portion may cause the bolt to threadingly engage the conductive stud.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: February 4, 2014
    Assignee: Thomas & Betts International, Inc
    Inventors: Larry N. Siebens, Alan D. Borgstrom
  • Patent number: 8449310
    Abstract: A high voltage link apparatus may include a link assembly that includes an insulated bushing portion; a first feed thru junction bushing portion; and a second feed thru junction bushing portion. The insulated bushing portion is electrically isolated from the first feed thru junction bushing portion and the second feed thru junction bushing portion. The first feed thru junction bushing portion is conductively coupled to the second feed thru junction bushing portion. First, second, and third bushing interfaces are provided for conductively coupling to first, second, and third power cables, respectively. Each of the first, second, and third bushing interfaces include link receiving portions configured to receive the link assembly therein. The link assembly is installable in the first, second, and third bushing interfaces in first and second, reversible orientations.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: May 28, 2013
    Assignee: Thomas & Betts International, Inc.
    Inventor: Larry N. Siebens
  • Patent number: 8408925
    Abstract: An electrical connector assembly may include a connector body having a conductor receiving end, a first connector end, and a visible open port. A contact assembly may extend axially within the connector body from the conductor receiving end to the first connector end. A conductive insert may be inserted into the visible open port. At least a portion of the contact assembly is visible through the visible open port prior to insertion of the conductive insert or following removal of the conductive insert. The portion of the contact assembly visible through the visible open port includes a first contact portion and a second contact portion separated by a gap. A portion of the conductive insert is received in the gap between the first contact portion and the second contact portion to allow current to flow from the second contact portion to the first contact portion upon insertion of the conductive insert into the visible open port.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: April 2, 2013
    Assignee: Thomas & Betts International, Inc.
    Inventors: Alan D. Borgstrom, Kieran P. Higgins
  • Patent number: 8152547
    Abstract: Stiff and soft materials each provide certain advantages when used in the manufacture of separable insulated connectors, such as elbow and T-body connectors. Utilizing a shell or an insert that includes one section made from a stiff material and one section made from a soft material can provide a separable insulated connector that capitalizes on the advantages associated with both types of materials. The stiff materials and soft materials can be placed strategically on the shell or insert of the separable insulated connector to maximize the advantages of each material. For example, the stiff material can be used to form a section of the separable insulated connector where strength and durability is most desirable, and conversely, the soft material can be used to form a section of the connector where flexibility is desirable. A relatively stiff band can be provided around a relatively soft portion of a connector.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: April 10, 2012
    Assignee: Cooper Technologies Company
    Inventor: David Charles Hughes
  • Patent number: 8109776
    Abstract: Stiff and soft materials each provide certain advantages when used in the manufacture of separable insulated connectors, such as elbow and T-body connectors. Utilizing a shell or an insert that includes one section made from a stiff material and one section made from a soft material can provide a separable insulated connector that capitalizes on the advantages associated with both types of materials. The stiff materials and soft materials can be placed strategically on the shell or insert of the separable insulated connector to maximize the advantages of each material. For example, the stiff material can be used to form a section of the separable insulated connector where strength and durability is most desirable, and conversely, the soft material can be used to form a section of the connector where flexibility is desirable.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: February 7, 2012
    Assignee: Cooper Technologies Company
    Inventors: David Charles Hughes, Thomas Augustia, John Mitchell Makal, Michael John Gebhard, Sr.
  • Patent number: 8101874
    Abstract: A watertight junction box includes a box body, a lower floating plate, an upper floating plate, a lock cap, a modular cable inserted into the box body and kept in contact with sharp copper contacts, a holding down plate for holding down an external power wire on the upper floating plate to cause electric contact between the external power wire and the sharp copper contacts, and a predetermined amount of silicon rubber filled in between the lower and upper floating plate that is deformed to wrap about the connection area between the sharp copper contacts and the external power wire when the lock cap is tightly fastened to the box body to force down the holding down plate.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: January 24, 2012
    Assignee: Smart Electric Works Co., Ltd.
    Inventor: Jerry S. C. Yang
  • Patent number: 8043102
    Abstract: The present invention discloses a connector sheath (1) adapted to be used in a cable connector assembly, comprising a T-shaped main insulation bushing (102), an inner semiconductive shield layer (105) disposed in the T-shaped main insulation bushing and integrally formed with the T-shaped main insulation bushing; and an outer semi-conductive shield layer (101) disposed on an outer surface of the T-shaped main insulation bushing and integrally formed with the T-shaped main insulation bushing. The T-shaped main insulation bushing is generally made of an elastic insulation material having a dielectric constant value in the range from about 5 to about 15. The present invention also discloses a cable connector assembly having a connector sheath.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: October 25, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Huo Ying Lu, Qi Su
  • Patent number: 7985093
    Abstract: An impedance assembly is provided for a termination device, disconnectable connector, or other type of joint for an electrical connection, such as an elbow, to facilitate preventing improper installation. More specifically, an impedance assembly can include an obstruction member that help prevent the insertion of a stud into a female device, such as a bushing, unless the stud is properly inserted through the aperture of the lug of the cable assembly. The obstruction member can include a flexible and/or displaceable member that can be displaced by the lug of the cable assembly. Alternatively, an impedance assembly can prevent the rotation of a female member which rotates to receive the stud of a male device. The impedance assembly can include an element that is received in a cavity, groove, etc. of the female member for preventing the rotation of the female member unless the element is removed therefrom. For example, the element can be removed from the cavity, groove, etc.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: July 26, 2011
    Assignee: Richards Manufacturing Company, a New Jersey Limited Partnership
    Inventors: Glenn J. Luzzi, Mario DaSilva
  • Patent number: 7972155
    Abstract: A hotstick operable electrical connector for use in a power distribution system that includes a housing, a well and first and second frustoconical members extending from a surface of the housing. Each frustoconical member has a distal end and an axial bore that extends from the distal end into the housing. The well includes a wall, a base with an aperture and a tapered cavity that extends into the housing from the surface opposite the frustoconical members. The well is adapted to receive a male end of an insert device, such as a feed-thru insert or bushing insert. The aperture provides communication between the cavity and the axial bore of one of the frustoconical members. An electrical contact assembly extends through the aperture between the cavity and the axial bore. The integrally formed well provides a means for direct connection with an insert device without the use of an adapter.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: July 5, 2011
    Assignee: Thomas & Betts International, Inc.
    Inventor: Larry Siebens
  • Patent number: 7950939
    Abstract: Medium voltage separable insulated connector system for power distribution systems and configured to make and break energized connections at rated voltage but in the absence of load current.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: May 31, 2011
    Assignee: Cooper Technologies Company
    Inventors: David Charles Hughes, Brian Todd Steinbrecher, John Mitchell Makal, Frank John Muench
  • Patent number: 7950940
    Abstract: Separating connector assemblies of a separable connector system. The separable connector assemblies include one or more pairs of connectors configured to engage and disengage one another in electrical connection and disconnection operations, respectively. An operator can disengage the connectors by pushing the connectors together and then pulling the connectors apart. Pushing the connectors together shears interface adhesion between the connectors, making it easier for the operator to pull the connectors apart. One of the connectors can include a nose end having an undercut segment configured to not engage an interior surface of the other connector when the connectors are engaged. Limiting the surface area of the nose end that interfaces with the interior surface of the other connector reduces surface adhesion and a pressure drop when separating the connectors, making separation easier to perform.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: May 31, 2011
    Assignee: Cooper Technologies Company
    Inventor: David Charles Hughes
  • Patent number: 7901228
    Abstract: A fuse test and ground device includes an insulated housing with a bore that extends from the front of the housing towards the rear of the housing. An electrical contact is disposed partially within the bore. A current interrupter, such as a fuse, is electrically connected between the contact and a testing ground lead. An eye, having it's surface insulated by the housing, can be attached to the housing and provide a connection point for manipulation of the device. A grounding bore extends from a second aperture into the housing and provides an electrical connection to the contact. A grounding plug can be connected to ground on one end and inserted into the grounding bore to create a permanent ground for the device. An annunciator is connected to the current interrupter such that the annunciator provides an indication when a current flows through the current interrupter.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: March 8, 2011
    Assignee: Cooper Technologies Company
    Inventors: David Charles Hughes, Steven Guy Whitmore
  • Patent number: 7891999
    Abstract: A fuse test and ground device includes an insulated housing with a bore that extends from the front of the housing towards the rear of the housing. An electrical contact is disposed partially within the bore. A current interrupter, such as a fuse, is electrically connected between the contact and a testing ground lead. An eye, having it's surface insulated by the housing, can be attached to the housing and provide a connection point for manipulation of the device. A grounding bore extends from a second aperture into the housing and provides an electrical connection to the contact. A grounding plug can be connected to ground on one end and inserted into the grounding bore to create a permanent ground for the device. An annunciator is connected to the current interrupter such that the annunciator provides an indication when a current flows through the current interrupter.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: February 22, 2011
    Assignee: Cooper Technologies Company
    Inventors: David Charles Hughes, Steven Guy Whitmore
  • Patent number: 7854620
    Abstract: A separable connector shield housing includes a layer of conductive material disposed at least partially around a layer of non-conductive material. The layers are molded together. For example, the conductive material can be overmolded around the non-conductive material, or the non-conductive material can be insert molded within the conductive material. The molding results in an easy to manufacture, single-component shield housing with reduced potential for air gaps and electrical discharge. The shield housing defines a channel within which at least a portion of a contact tube may be received. A contact element is disposed within the contact tube. The conductive material substantially surrounds the contact element. The non-conductive material can extend along an entire length of the contact tube and other components, or it may only extend partially along the contact tube. The non-conductive material can include an integral nose piece disposed along a nose end of the contact tube.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: December 21, 2010
    Assignee: Cooper Technologies Company
    Inventors: David Charles Hughes, Paul Michael Roscizewski
  • Patent number: 7811113
    Abstract: An electrical connector, such as a bushing insert, with a fault-closure lockout feature includes a housing with an inner bore having opposite ends. One end has an opening providing access to the inner bore. A piston-contact element is movable between first and second axially spaced positions within the inner bore. During fault conditions, the piston-contact element moves from the first position to the second position to accelerate connection with a male contact of another electrical connector, such as a cable connector, thereby inhibiting the formation of flashover or electrical arc. After fault closure, a lockout member on the piston-contact element prevents moving the piston-contact element from the second position to the first position.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: October 12, 2010
    Assignee: Cooper Technologies Company
    Inventor: David Charles Hughes
  • Patent number: 7803003
    Abstract: An electrical connector for connecting to an electrical apparatus within a high power circuit includes an electrical contact and an enclosure. The electrical contact is configured to connect to a bushing of an electrical apparatus within a high power circuit. The electrical contact extends along a first direction from a coupling region. The enclosure extends from the coupling region in a second direction that is nonparallel to the first direction. The enclosure includes two or more electrical devices, with each electrical device being connected to the electrical contact within the coupling region and providing a current path from the electrical apparatus to at least one external coupling device within the high power circuit.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: September 28, 2010
    Assignee: Cooper Technologies Company
    Inventor: David Charles Hughes
  • Patent number: 7758367
    Abstract: A seating indicator for loadbreak connectors and deadbreak connectors that includes a substantially round, elastic O-ring having a body and an opening, wherein the O-ring is installed on the transition shoulder portion of a loadbreak bushing insert, and wherein the O-ring extends radially and outwardly from the bushing insert when an elbow connector is properly installed thereon. The O-ring can be hollow so that it will more easily deform and can be made from an elastomeric material in easily viewable colors.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: July 20, 2010
    Assignee: Thomas & Betts International, Inc.
    Inventors: Larry Norman Siebens, Anthony Reed, Roger Provencal
  • Patent number: 7708576
    Abstract: A high-voltage electrical connector system comprises a bushing with a longitudinal axis, a shoulder, a first end, and a second end, wherein the shoulder is between the first end and the second end; a ring arranged circumferentially around a first outside diameter of the bushing, the ring disposed between the shoulder and the second end, the ring including a channel therein defining a circumferential extension extending axially toward the first end; a ground shield disposed on a second outside diameter of the bushing between the ring and the second end, the ground shield comprising one or more of conductive material and semiconductive material; and an insulative portion adjacent the ring and disposed circumferentially over a portion of the ground shield.
    Type: Grant
    Filed: August 25, 2008
    Date of Patent: May 4, 2010
    Assignee: Cooper Industries, Ltd.
    Inventors: David Charles Hughes, Marie Way, Mark Kadow
  • Patent number: 7695291
    Abstract: A fuse test and ground device includes an insulated housing with a bore that extends from the front of the housing towards the rear of the housing. An electrical contact is disposed partially within the bore. A current interrupter, such as a fuse, is electrically connected between the contact and a testing ground lead. An eye, having it's surface insulated by the housing, can be attached to the housing and provide a connection point for manipulation of the device. A grounding bore extends from a second aperture into the housing and provides an electrical connection to the contact. A grounding plug can be connected to ground on one end and inserted into the grounding bore to create a permanent ground for the device. An annunciator is connected to the current interrupter such that the annunciator provides an indication when a current flows through the current interrupter.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: April 13, 2010
    Assignee: Cooper Technologies Company
    Inventors: David Charles Hughes, Steven Guy Whitmore
  • Patent number: 7690955
    Abstract: A bushing well, which generally includes a bushing well housing defining a conical inner cavity for receiving an end of a bushing insert and an electrically conductive insert disposed within the housing, wherein the insert has an installation tool engagement portion accessible by an installation tool via the inner cavity of the housing for attaching the bushing well to an electrical device.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: April 6, 2010
    Assignee: Thomas & Betts International, Inc.
    Inventors: Larry Siebens, Alan Borgstrom
  • Patent number: 7674122
    Abstract: This invention relates to providing a means to removeably mount a feed through/grounding bushing commonly used to bond together, ground and/or park power distribution cables. Many pieces of power distribution equipment have U brackets for removable attachment of accessories and temporary placed maintenance equipment. The present invention addresses holding the bushing at an angle relative to the U bracket and surrounding surface and adjustability of the bushing height relative to the U bracket for strain relief and adjusting for improved work room. Also addressed is the advantage of cable identification by numbering the wells so that a lineman may readily select the cables even after the bushing may have been set aside for equipment replacement. This is especially useful on but not limited to this invention since the U bracket mounting means is moveable and would not always provide positive identification of one end of a multi well bushing.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: March 9, 2010
    Inventor: Denton L. Jackson, III
  • Patent number: 7670152
    Abstract: A dual interface separable insulated connector comprising a faraday cage molded over a bus bar for use in an electric power system and a method of manufacturing the same are provided. The faraday cage can be disposed within a semi-conductive shell. The configuration of the separable insulated connector can provide for easier bonding between the faraday cage and insulating material. Additionally, the configuration can eliminate or reduce the need to coat the bus bar with an adhesive agent and to smooth the metal bus bar to remove burrs, other irregularities, and sharp corners from the bar. Manufacturing the dual interface separable insulated connector can include molding a semi-conductive rubber faraday cage over a conductive bus bar, inserting the faraday cage into a shell, and injecting insulating material between the faraday cage and shell.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: March 2, 2010
    Assignee: Cooper Technologies Company
    Inventors: David Charles Hughes, Mark Clifford Kadow, Michael John Gebhard, Sr.
  • Patent number: 7648376
    Abstract: A loadbreak connector formed by a power cable elbow and a bushing insert with increased flashover distance is disclosed. The power cable elbow includes a conductive member having an energized portion and a non-energized portion, a cable receiving end, a loadbreak bushing insert receiving end with an elbow cuff that extends beyond the energized portion. The bushing insert includes an insulative outer housing and an insulative interface sleeve. The insulative outer housing has an axial bore with a conductive socket, a first, second end mid-section, and a transition shoulder portion between the second end section and the mid-section. The insulative interface sleeve extends over the outer housing from the mid-section to the second end section. When the power cable elbow is installed on the second end section, the flashover distance from the top of the second end section to the bottom of the elbow cuff is increased.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: January 19, 2010
    Assignee: Thomas & Betts International, Inc.
    Inventor: Alan D. Borgstrom
  • Patent number: 7591693
    Abstract: A latching mechanism for joining separable insulated connectors employs a plurality of finger contacts to create an interference fit with an electrode probe of an elbow connector. The electrode probe enters a cylindrical grouping of the plurality of finger contacts and a projection causes an interference fit between the finger contacts and the electrode probe. The finger contacts latch the connectors together and require a removal force greater than the latching force required to latch the connectors. The latching mechanism provides a multi-point current path between an elbow connector and a power transmission or distribution apparatus and provides operator feedback to indicate the latching of the mechanism.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: September 22, 2009
    Assignee: Cooper Technologies Company
    Inventor: David C. Hughes
  • Publication number: 20090233496
    Abstract: A bushing well, which generally includes a bushing well housing defining a conical inner cavity for receiving an end of a bushing insert and an electrically conductive insert disposed within the housing, wherein the insert has an installation tool engagement portion accessible by an installation tool via the inner cavity of the housing for attaching the bushing well to an electrical device.
    Type: Application
    Filed: May 21, 2009
    Publication date: September 17, 2009
    Inventors: Larry Siebens, Alan Borgstrom
  • Patent number: 7588469
    Abstract: An apparatus for connecting two or more members is provided wherein the apparatus includes a first leg having an opening, a conductive portion and an insulated portion extending between the conductive portion and the opening. A connecting member can electrically connect to the conductive portion and engage a cable assembly and an apparatus received in alternate legs of the apparatus.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: September 15, 2009
    Assignee: Richards Manufacturing Company
    Inventor: Glenn J. Luzzi
  • Patent number: 7578682
    Abstract: A dual interface separable insulated connector comprising a faraday cage molded over a bus bar for use in an electric power system and a method of manufacturing the same are provided. The faraday cage can be disposed within a semi-conductive shell. The configuration of the separable insulated connector can provide for easier bonding between the faraday cage and insulating material. Additionally, the configuration can eliminate or reduce the need to coat the bus bar with an adhesive agent and to smooth the metal bus bar to remove burrs, other irregularities, and sharp corners from the bar. Manufacturing the dual interface separable insulated connector can include molding a semi-conductive rubber faraday cage over a conductive bus bar, inserting the faraday cage into a shell, and injecting insulating material between the faraday cage and shell.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: August 25, 2009
    Assignee: Cooper Technologies Company
    Inventors: David Charles Hughes, Mark Clifford Kadow, Michael John Gebhard, Sr.
  • Patent number: 7556540
    Abstract: A bushing well, which generally includes a bushing well housing defining a conical inner cavity for receiving an end of a bushing insert and an electrically conductive insert disposed within the housing, wherein the insert has an installation tool engagement portion accessible by an installation tool via the inner cavity of the housing for attaching the bushing well to an electrical device.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: July 7, 2009
    Assignee: Thomas & Betts International, Inc.
    Inventors: Larry Siebens, Alan Borgstrom
  • Patent number: 7530843
    Abstract: An electrical terminal is sealed for use in high voltage vehicle systems. The terminal has a cylindrical section positioned between a contact section for mating with another electrical contact or terminal and a crimp section for mechanically and electrically securing the terminal to an electrical wire. The cylindrical section is integral with both the contact section and the crimp section, and includes an outer surface with a circumferential groove. The groove receives and retains an o-ring seal for preventing contaminant seepage between the contact section and the crimp section when the contact section is inserted into a connector for mating with the other contact or terminal. The contact section may be either a substantially flat eyelet contact, a male contact or female contact.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: May 12, 2009
    Assignee: Yazaki North America, Inc.
    Inventors: Semere T. Tesfay, John J. Hasija, Alexander J. Advey
  • Patent number: 7524202
    Abstract: A high voltage loadbreak bushing insert includes an insulative housing having a first end section, a second end section opposite the first end section, a mid-section disposed between the first and second end sections and a transition shoulder portion disposed between the second end section and the mid-section. The second end section is dimensioned for insertion into a power cable elbow connector and the mid-section is dimensioned to be sealed against an elbow cuff of the power cable elbow connector. The transition shoulder portion includes at least one raised portion protruding radially outwardly from the transition shoulder portion. The raised portion is adapted to force the elbow cuff of the power cable elbow connector to expand in a radially outward direction upon withdrawal of the second end section from the power cable elbow connector, thereby venting a cavity formed between the bushing insert and the power cable elbow connector.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: April 28, 2009
    Assignee: Thomas & Betts International, Inc.
    Inventors: Frank M. Stepniak, Alan D. Borgstrom, Larry N. Siebens
  • Patent number: 7517242
    Abstract: The invention relates to a clamping device for power cables with an essentially tubular bell housing in which a tubular holding element for a power cable is arranged mobile along the central longitudinal axis of the bell housing, and with a spring which is arranged between a stop in the bell housing and the holding element and pushes the holding element away from the stop along the central longitudinal axis, a display element being arranged at the holding element, so that the tension of the spring can be learned from outside, and the spring surrounds the power cable.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: April 14, 2009
    Assignee: Yxlon International X-Ray GmbH
    Inventors: Peter Brodersen, Henning Doll, Wilhelm Niemann
  • Patent number: 7503785
    Abstract: A separable electrical connector component generally including an insulating housing, a current carrying element disposed within the insulative housing and a voltage control device disposed within the housing. The housing has a mid-section, a first insertion end extending from the mid-section in a first direction, a second insertion end extending from the mid-section in a second direction opposite the first direction and a third section extending outwardly from the mid-section between the first and second insertion ends. The current carrying member extends through the first insertion end, the mid-section and the second insertion end. The voltage control device is disposed within the third section of the housing and is in electrical communication with the current carrying element.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: March 17, 2009
    Assignee: Thomas & Betts International, Inc.
    Inventor: Frank M. Stepniak
  • Patent number: 7494355
    Abstract: A separable insulated connector assembly provided with a thermoplastic interface formed on a surface of a shield.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: February 24, 2009
    Assignee: Cooper Technologies Company
    Inventors: David Charles Hughes, John M. Makal, Edine Mary Heinig
  • Patent number: 7491075
    Abstract: An electrical connector includes a sleeve defining an axis and a contact assembly inserted in the sleeve, the contact assembly including pieces that move axially relative to one another during a fault close operation. An interface between the sleeve and the contact assembly is configured to permit replacement of the contact assembly without replacing the sleeve.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: February 17, 2009
    Assignee: Cooper Technologies Company
    Inventors: David Charles Hughes, John Mitchell Makal, Paul Roscizewski
  • Patent number: 7435120
    Abstract: An electrical insulator preferably for medium and high voltages surrounds an interior space. Electrically active elements can be introduced into the interior space of the electrical insulator. In order to reduce the heat transfer between the interior space and the environment of the electrical insulator, the insulator contains thermally insulating areas.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: October 14, 2008
    Assignee: Siemens Aktiengesellschaft
    Inventors: Lutz-Rüdiger Jänicke, Nils Werning
  • Patent number: 7427207
    Abstract: This invention relates to providing a means to removeably mount a feed through/grounding bushing commonly used to bond together, ground and/or park power distribution cables. Many pieces of power distribution equipment have U brackets for removable attachment of accessories and temporary placed maintenance equipment. The present invention addresses holding the bushing at an angle relative to the U bracket and surrounding surface and adjustability of the bushing height relative to the U bracket for strain relief and adjusting for improved work room. Also addressed is the advantage of cable identification by numbering the wells so that a lineman may readily select the cables even after the bushing may have been set aside for equipment replacement. This is especially useful on but not limited to this invention since the U bracket mounting means is moveable and would not always provide positive identification of one end of a multi well bushing.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: September 23, 2008
    Inventor: Denton L. Jackson, III
  • Patent number: 7351082
    Abstract: An electrical connector may include a connector body having a passageway therethrough. The connector body may include a first layer adjacent the passageway, a second layer surrounding the first layer and comprising an insulative silicone elastomeric material, and a third layer surrounding the second layer. The third layer preferably has a relatively low resistivity, and may also include a semiconductive silicone elastomeric material. In some embodiments, the first layer may also include a semiconductive silicone elastomeric material. The silicone elastomeric material layers may be overmolded.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: April 1, 2008
    Assignee: Homac Mfg. Company
    Inventors: Roy E. Jazowski, Matthew D. Cawood
  • Patent number: 7258585
    Abstract: A latching mechanism for joining separable insulated connectors employs a plurality of finger contacts to create an interference fit with an electrode probe of an elbow connector. The electrode probe enters a cylindrical grouping of the plurality of finger contacts and a projection causes an interference fit between the finger contacts and the electrode probe. The finger contacts latch the connectors together and require a removal force greater than the latching force required to latch the connectors. The latching mechanism provides a multi-point current path between an elbow connector and a power transmission or distribution apparatus and provides operator feedback to indicate the latching of the mechanism.
    Type: Grant
    Filed: January 13, 2005
    Date of Patent: August 21, 2007
    Assignee: Cooper Technologies Company
    Inventors: David C. Hughes, Frank J. Muench
  • Patent number: 7234980
    Abstract: A loadbreak electrical connector may include a housing having first and second intersecting passageways therein, and a conductive member to be received in the first passageway. The conductive member may have a first end to receive a cable end, and have a transverse internally threaded opening adjacent a second end thereof accessible via the second passageway. A loadbreak probe may be received in the second passageway and have an externally threaded end for threading into the threaded opening. The threaded end of the loadbreak probe may include a proximal portion and a bullnose tip connected thereto, or a self-aligning anti cross-threading tip.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: June 26, 2007
    Assignee: Homac Mfg. Company
    Inventors: Roy E. Jazowski, Paul W. Lubinsky
  • Patent number: 7204705
    Abstract: A description is given of a high-voltage connector having a plug with a rubber cone (13) for insertion into a coupling socket (20). Such a connector is also referred to as a rubber cone plug system and serves in particular to connect X-ray radiators with high-voltage generators. The connector is noteworthy in particular in that the length of the rubber cone (13) is dimensioned such that, in the inserted state, there remains an expansion space (25) between an end face of the rubber cone (13) and a bottom of the coupling socket (20), into which expansion space (25) the rubber cone (13) can thermally expand. A particular advantage of this design lies in the fact that, by virtue of the thermal changes on account of highly fluctuating operating temperatures of the connected devices, the high-voltage strength is not impaired even after a large number of such temperature cycles.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: April 17, 2007
    Assignee: Koninklijke Philips Electronics, N.V.
    Inventors: Hans Negle, Bernd Wandler
  • Patent number: 7108568
    Abstract: A loadbreak electrical connector may include a housing having first and second intersecting passageways therein, and a conductive member to be received in the first passageway. The conductive member may have a first end to receive a cable end, and have a transverse internally threaded opening adjacent a second end thereof accessible via the second passageway. A loadbreak probe may be received in the second passageway and have an externally threaded end for threading into the threaded opening. The threaded end of the loadbreak probe may include a proximal portion and a bullnose tip connected thereto, or a self-aligning anti cross-threading tip.
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: September 19, 2006
    Assignee: Homac Mfg. Company
    Inventors: Roy E. Jazowski, Paul W. Lubinsky
  • Patent number: 7104822
    Abstract: An electrical connector may include a connector body having a passageway therethrough. The connector body may include a first layer adjacent the passageway, a second layer surrounding the first layer and comprising an insulative silicone elastomeric material, and a third layer surrounding the second layer. The third layer preferably has a relatively low resistivity, and may also include a semiconductive silicone elastomeric material. In some embodiments, the first layer may also include a semiconductive silicone elastomeric material. The silicone elastomeric material layers may be overmolded to thereby increase production speed and efficiency thereby lowering production costs. The silicone elastomeric material may also provide excellent electrical performance and other advantages.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: September 12, 2006
    Assignee: Homac Mfg. Company
    Inventors: Roy E. Jazowski, Matthew D. Cawood
  • Patent number: 7104823
    Abstract: A connector body may have a passageway therethrough and may include a first layer adjacent the passageway and having a relatively low resistivity, a second layer surrounding the first layer and including a material having a relatively high resistivity, and a third layer surrounding the second layer and including a material having the relatively low resistivity. At least one of the first, second and third layers may include a thermoplastic elastomer (TPE) material. The connector body may also include at least one member of a different thermoplastic material than the TPE material and being bonded to adjacent portions of the TPE material. For example, the different thermoplastic material may comprise polypropylene and the member may be a pulling eye or test point insert. In other embodiments, instead of TPE, at least one of the first, second and third layers may include a silicone material.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: September 12, 2006
    Assignee: Homac Mfg. Company
    Inventors: Roy E. Jazowski, Marie T. Lubinsky, legal representative, Paul W. Lubinsky, deceased
  • Patent number: 7044769
    Abstract: An electrical connector includes a body with first and second end sections, a mid-section disposed between the first and second end sections. The mid-section is radially larger than each of the first and second end sections and includes an outer surface. A transition shoulder is disposed between the first end section and the mid-section. The transition shoulder includes a face wall extending between the outer surface of the mid-section and an outer surface of the first end section. A plurality of radial indicator ribs extend from the outer surface of the mid-section. Each of the radial indicator ribs includes an abutment surface laterally offset from the face wall of the transition shoulder to abut or almost abut a portion of a mating electrical connector.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: May 16, 2006
    Assignee: Hubbell Incorporated
    Inventors: Tiebin Zhao, Jefferson Wang, James F. Cameron
  • Patent number: 7044760
    Abstract: A method for forming a separable electrical connector having an electrical interface surface includes the steps of molding an interface shell from a thermoplastic, placing the interface shell against an electrical interface portion of a mold cavity and molding a housing within the mold cavity. When placed in the mold cavity, the interface shell provides a barrier to the mold cavity interface portion, wherein the housing is isolated from the electrical interface potion of the mold cavity by the interface shell. The shell has an inner surface and an outer surface and the housing is bonded to one of the inner and outer surfaces, wherein the other of the inner and outer surfaces of the shell defines the electrical interface surface of the electrical connector.
    Type: Grant
    Filed: January 5, 2004
    Date of Patent: May 16, 2006
    Assignee: Thomas & Betts International, Inc.
    Inventors: Alan D. Borgstrom, Frank M. Stepniak
  • Patent number: 6984791
    Abstract: An elbow terminator has a socket in which an electrical probe is disposed. The terminator is insertable onto an electrical bushing such that a tongue of the bushing is received in the socket of the terminator, and the probe of the terminator is electrically coupled to a contact sleeve disposed within the tongue. A latching mechanism produces positive latching between the tongue and socket when the tongue has been inserted to a predescribed depth within the socket. In order to enable an operator to visually observe that the tongue has been inserted to the prescribed depth, the bushing carries a color band which becomes completely disposed (invisible) in the socket when positive latching occurs. Alternatively, the bushing can be provided with gauge tabs which become aligned with a witness line formed on the terminator when positive latching occurs.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: January 10, 2006
    Assignee: Cooper Technologies Company
    Inventors: Andrew E. Meyer, Todd Kim Knapp, Frank J. Muench Jr.
  • Patent number: 6939183
    Abstract: A connector is attachable to an extending transformer stud. The connector includes an elongate central body having a longitudinal bore opening at one end for insertable accommodation of the transformer stud. The longitudinal bore accepts more than one size stud without increasing the size and cost needed for two separate mounting holes. The connector according to the present invention accepts the pitch of at least two different size threads and with the typical setscrew locking arrangement, maintains thread engagement on one side of the stud, securing the stud and maintaining an electrical contact area between the stud and the connector.
    Type: Grant
    Filed: July 6, 2004
    Date of Patent: September 6, 2005
    Assignee: Thomas & Betts International, Inc.
    Inventors: Michael John Ferretti, George Triantopoulos
  • Patent number: 6926547
    Abstract: An arc quenching electrical connector has a male pin terminal which inserts longitudinally into a receptacle or terminal having a gassing wall engaged concentrically about the receptacle. During “hot unplugging” of the electrical connector, an arc is carried between a tip of the male pin and a contact surface of a leading end of the receptacle. The gassing wall extends over and is directly engaged to a portion of the contact surface. Because the gassing wall is also preferably an electrical insulator, the arc communicates electrically with the exposed contact surface and is biased directly against the gassing wall. The gassing wall, when heated by the adjacent arc, quenches or reduces the energy of the arc by releasing gas which eliminates arc erosion of the terminals.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: August 9, 2005
    Assignee: Delphi Technologies, Inc.
    Inventors: Thomas J. Schoepf, Rafil Basheer, Ismat Abu-Isa
  • Patent number: 6843685
    Abstract: An electrical cable connector having a voltage detection test point generally includes an internal conductor, an inner insulating sheath surrounding the conductor, a conductive outer shield surrounding the insulating sheath, a separately molded plastic insulative shield disposed adjacent an opening formed in the conductive outer shield and held by the inner insulating sheath and a conductive voltage detection test point terminal disposed within the plastic insulative shield, wherein the test point terminal is capacitively coupled to the internal conductor for external testing of a voltage of the connector. In a preferred method for forming an electrical cable connector, such as a loadbreak power cable elbow connector, having a voltage detection test point, an insulative shield is first molded from a thermoplastic and a conductive voltage detection test point terminal is inserted within the plastic insulative shield. An outer shield is then molded from a conductive material.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: January 18, 2005
    Assignee: Thomas & Betts International, Inc.
    Inventors: Alan Borgstrom, John Knight
  • Patent number: 6796820
    Abstract: An electrical connector includes a connector body having a passageway therethrough. The connector body may include a first layer adjacent the passageway, a second layer surrounding the first layer, and a third layer surrounding the second layer. At least one of the layers may include a thermoplastic elastomer (TPE) material. The connector may also include a cold shrink core within at least a portion of the passageway. The cold shrink core may include a carrier and a release member connected thereto so that the carrier maintains adjacent connector portions in an expanded state, such as to permit insertion of an electrical conductor. The release member can then be activated, such as pulling, to remove the cold shrink core so that the connector closes upon the electrical conductor.
    Type: Grant
    Filed: May 15, 2003
    Date of Patent: September 28, 2004
    Assignee: Homac Mfg. Company
    Inventors: Roy E. Jazowski, Matthew D. Cawood