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| Number | Title | Issue Date |
| 7639113 | Enclosed insulator assembly for high-voltage distribution systems An enclosed insulator assembly has a generally cylindrical polysiloxane body, a tubular Durethan® core with upper and lower terminals, Multilam™ contacts within the terminals, an arc-quenching tube, and a manually removable handle. Entrance holes in the body acco... | 12/29/2009 |
| 7349189 | Electrical surge protection using in-package gas discharge system The present invention comprises using an electrode (107) arranged with a small gap or opening (108) placed in parallel with an electrically sensitive component (105) and housed with a gas inside an enclosure (100) to form a discharge gap.... | 03/25/2008 |
| 7245473 | Switchable lightning arrester system The switchable lightning-arrester system has a safety-switchable connector (10), which, for differing power-line features, can include optionally a counter-lever safety connector (14), a slide safety connector (40), a hinged safety connector ( | 07/17/2007 |
| 7223928 | Switch with improved protection from ice conditions An arrangement is provided to protect an electrical switch from the deleterious effects of ice formation that inhibits switch operation. In a preferred arrangement, an ice shield is provided that protects the current-carrying contact structures and other operative e... | 05/29/2007 |
| 7109877 | Fault monitoring apparatus and method A fault condition monitoring apparatus for use with a fuse cutout includes a housing operable to be supported by the fuse cutout. The housing has first and second contacts operable to make electrical contact with fuse contacts on the fuse cutout when the housing is ... | 09/19/2006 |
| 7012498 | Fuse holder for a plurality of fuses A fuse holder assembly (1) is provided having at least two electrically insulated fuse housings in the form of passages (5, 33) associated with the body and each of which is adapted to receive a fuse (6) held under tension therein by means of an... | 03/14/2006 |
| 6922132 | Fuse cutout with improved dropout performance An improved fuse cutout is provided of the type having a fuse tube assembly that moves to a dropout position upon operation in response to a fault current or other overcurrent. These types of fuse cutouts include the pivotal mounting of the fuse tube assembly with r... | 07/26/2005 |
| 6724291 | Door sensing fuse block with side extending rotary disconnect A fuse block for cabinet mounting provides a shaft that may exit a side of the cabinet to be received by a handle mounted on that side. A finger attached to the inner cabinet door provides for an interlock by engaging with a bolt communicating with the shaft prevent... | 04/20/2004 |
| 6531948 | Fuse handler A fuse handling device for use with a fuse unit having a pair of contacts between which a fuse terminals which act as switching contacts may extend in use. The handling device comprises an actuating lever operable into a first position and a second positi... | 03/11/2003 |
| 6418005 | Power circuit breaker The power circuit breaker has an igniter unit disposed in a cylindrical wall formed in a main housing. A holder is disposed in the cylindrical wall so as to oppose to the igniter unit. The holder has a boss engaged with the cylindrical wall, and a fuse el... | 07/09/2002 |
| 6350958 | Manually operated actuating device and method An actuating device (60) operated by a hookstick (4) is attached to a manually operated fused cutout switch (2) or a oil circuit recloser switch (14). The device (60) comprises a cantilever (62) with a pair of opposing hook-shaped receptacles (70, 72) for... | 02/26/2002 |
| 6211768 | Non-venting cutout mounted fuse A non-venting current limiting fuse for mounting in a cutout comprises a high current fuse component and a low current fuse component housed in separate compartments of a housing and connected in series. Interruption of a low current overload results in o... | 04/03/2001 |
| 6130391 | Method of manually operating an actuating device An actuating device operated by a hookstick is attached to an existing ring on a manually operated fused cutout switch or oil circuit recloser switch. The device comprises a cantilever and a clamp for attaching the cantilever about the existing ring. The ... | 10/10/2000 |
| 6093901 | Manually operated actuating device An actuating device operated by a hookstick is attached to a manually operated oil circuit recloser switch. The device comprises a cantilever and an affixed switch lever. The cantilever includes a pair of lever arms, each having a hook-shaped receptacle f... | 07/25/2000 |
| 5998748 | Manually operated actuating device An actuating device operated by a hookstick is attached to an existing ring on a manually operated fused cutout switch or oil circuit recloser switch. The device comprises a cantilever and a clamp for attaching the cantilever about the existing ring. The ... | 12/07/1999 |
| 5982266 | Fuse block-out device An improved fuse block-out device is disclosed that includes a fuse block-out device that includes a first portion shaped to be received by a fuse block and a second portion shaped to securely engage a fuse. When a fuse is removed from the fuse block, the... | 11/09/1999 |
| 5805046 | Current responsive latching apparatus for disconnecting and isolating an electrical device A current responsive latching apparatus may be employed in a dropout fuseholder or other electrical component for retaining the component in a current-carrying position and disconnecting and isolating the electrical component upon the occurrence of an ove... | 09/08/1998 |
| 5773777 | Circuit-interrepting device with handling features A circuit-interrupting device for electrical power distribution and transmission systems is provided having improved handling provisions for removal and installation with respect to conventional mountings. The handling provisions permit the circuit-interr... | 06/30/1998 |
| 5760673 | Current limiting fuse and dropout fuseholder A current-limiting dropout fuseholder includes multiple current paths through the fuse body. A primary current path includes a high current fusible element. A secondary current path in parallel with the primary path includes a triggering conductor that ex... | 06/02/1998 |
| 5757260 | Medium voltage switchgear with means for changing fuses Fuses for the potential transformers (PTs) in medium voltage switchgear are mounted in fuse assemblies which are reciprocated within the switchgear enclosure independently of the transformers they protect between a connected position in which the fuse ass... | 05/26/1998 |
| 5675308 | Current-limiting fuse and housing arrangement having a seal between an element and housing A low-exhaust composite drop-out assembly is provided that is utilizable in a standard cutout mounting in electrical power distribution systems. The composite drop-out assembly includes current-limiting and low-current clearing sections and is easily remo... | 10/07/1997 |
| 5670927 | Universal fuse holder and cut-out with built-in safety features and method A universal fuse holder and cut-out is provided with a slot having a length L and width W aligned with the fuse tube and engageable with the fuse tube and engageable by a projecting arm or member of a hot switch stick so as to enable safe and expedient ma... | 09/23/1997 |
| 5604475 | Current-limiting fuse and housing arrangement A current-limiting device is provided having a low profile configuration (generally flat polyhedron) that defines a cavity of predetermined dimensions and an elongated circuitous path through the cavity. The device also includes provisions for supporting ... | 02/18/1997 |
| 5532668 | Universal fuse holder and cut-out with built-in safety features and method A universal fuse holder and cut-out safety adapter. The adapter is adapted to be secured to the fuse tube and has a slot having a length L and a width W for engagement by the projecting arm of a hot stick switch.... | 07/02/1996 |
| 5485136 | Load break disconnecting device with solid arc suppression means An improved load break disconnecting device is disclosed, comprising a conductive portion having a non-gassing fuse, a fuse cartridge having first and second ends and enclosing said fuse, a conducting hinge assembly and conducting stationary contact means... | 01/16/1996 |
| 5440287 | Current responsive latching apparatus for disconnecting and isolating an electrical device A current responsive latching apparatus may be employed in a dropout fuseholder or other electrical component for retaining the component in a current-carrying position and disconnecting and isolating the electrical component upon the occurrence of an ove... | 08/08/1995 |
| 5300912 | Electrical cutout for high voltage power lines An electrical cutout with a modular product design is provided with a constructional configuration for the insulator wherein the insulator is light in weight, has sufficient mechanical strength, can be readily injection molded, and wherein the creep dista... | 04/05/1994 |
| 5191311 | Switch for use as a vertically mounted cut out or in-line switch A switch, for an electrical transmission line, can be used as a vertically mounted cut out or as an in-line switch. The switch has an insulator, mounting bars at either end, and a first and second brackets extending from the mounting bars. Brackets are co... | 03/02/1993 |
| 5093657 | Distribution cutout condition sensor A fused cutout for a power distribution system, which cutout includes an insulating member (2) having two opposed ends and a recess located between the two opposed ends, a fuse (12) defining a current path and having an element for interrupting the curren... | 03/03/1992 |
| 4961063 | Fuse tube for power and cutout fuses A fuse tube is provided for cutout and power fuse assemblies. The fuse tube has a body with a red retroreflective portion and a white retroreflective portion. When conducting the red portion lies above the white portion. When the fuse blows, the white por... | 10/02/1990 |
| 4906961 | Rain shield for expulsion-type circuit interrupters A rain shield for a circuit-interrupting device is provided that includes a housing for attachment to the circuit interrupter adjacent an exhaust outlet of the circuit interrupter. The rain shield prevents the ingress of moisture while providing a path fo... | 03/06/1990 |
| 4870387 | Beam strengthened cutout insulator An improved, integrally cast, synthetic resin insulator (22) especially adapted for use in an electrical cutout device (20) is provided which can be readily fabricated and gives greatly enhanced beam strength and arc track resistance characteristics. The ... | 09/26/1989 |
| 4857879 | Drop-out expulsion fuse An ejecta trap for a drop out expulsion fuse of the type comprising an elongate insulating body with a conductive head fitting and tail socket. The tail socket is pivotally connected to the tail fitting and the head and tail fittings are adapted to electr... | 08/15/1989 |
| 4688013 | Switchgear assembly for electrical apparatus A switchgear assembly for an electrical apparatus capable of improving operability thereof to a practical extent, as well as reducing not only installation area or space for various devices to be disposed below the switchgear but also the weight of the sw... | 08/18/1987 |
| 4542363 | Open fuse cutout An open fuse cutout has a built-in lightning arrester. A supporting insulator has an attachment hole extending substantially perpendicularly to the axis thereof with the lightning arrester element fixedly fitted in the attachment hole. The lightning arres... | 09/17/1985 |
| 4540968 | Open fuse cutout An open fuse cutout has a built-in lightning arrester. The open fuse cutout includes a supporting insulator with a protective cap fixed to an upper end thereof and containing the lightning arrester disposed laterally or vertically. The lightning arrester ... | 09/10/1985 |
| 4480245 | Electric cutout An electrical cutout having a support insulator with a line terminal and fuse support assembly at each end, each of which includes a line terminal, a fuse support element and means for their support on the insulator and also includes a contact element mor... | 10/30/1984 |
| 4480244 | Apparatus for the remote closing of fuse circuits Apparatus for remote closing of fuse circuits for overhead power lines is described which has a body fabricated of insulating material for detachable engagement with a fuse tube, the apparatus having a handle with a head thereon extending therefrom with a... | 10/30/1984 |
| 4450425 | Apparatus for remote closing of fuse circuits Apparatus for remote closing of fuse circuits for overhead power lines is described which apparatus comprises a rod of insulating material for insertion into the bottom of a fuse tube, the rod having a cord attached thereto and extending to the ground for... | 05/22/1984 |
| 4326184 | Electric cutout An electric cutout includes a fuseholder in which a fusible element is mounted, a conducting element pivotally mounted to the lower end of the fuseholder and having a pair of trunnions disposed within a pair of spaced jaws on which a pair of guide surface... | 04/20/1982 |
