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| Number | Title | Issue Date |
| 8085528 | Apparatus and method for an electrical system enclosure The present disclosure describes an apparatus for enclosing electrical equipment. A shutter panel with at least one shutter aperture, at least one guide piece configured to align the shutter panel with a stab-on bore of a unit area, an operator member and a mounting... | 12/27/2011 |
| 7440259 | Closure device for a withdrawable rack A closure device for a withdrawable rack adapted for receiving power circuit breaker includes a plate arrangement having at least two plates provided with openings and movable relative to one another so that the plate arrangement is changeable between an open positi... | 10/21/2008 |
| 7348505 | Shutter locking system for draw-out circuit breakers and method of assembly thereof A cassette for a draw-out circuit breaker apparatus is disclosed. The cassette comprises a base having a front edge and a back edge, the back edge defining a back plane, a set of shutters disposed at the back plane and configured to open and close, and a set of shut... | 03/25/2008 |
| 7310221 | Switching installation provided with an electrically insulating barrier A switching installation (5) having a circuit breaker (12), which is connected to a cable connection (33), and optionally a disconnector (14) for making or breaking a conductive connection between the cable connection (33) and a ra... | 12/18/2007 |
| 7136278 | Enclosed electrical switchgear and method of manufacture A company switch-type of electrical switchgear is disclosed having improved safety characteristics and having a reduced profile. The electrical connections are typically all enclosed in one area facing one direction such that access to the connections can be control... | 11/14/2006 |
| 7078634 | Mounting structure for an electric switch The aim of the invention is to achieve, in the simplest possible manner, a movement of an electric switch (3) of a medium-high voltage switch panel on a mounting structure (1) between an interrupt position, a test position and an operating position. To... | 07/18/2006 |
| 7064641 | Cathedral door shutter assembly A shutter assembly for a shuttered bus assembly is provided. The shuttered bus assembly is coupled to a circuit breaker housing assembly. The circuit breaker housing assembly is structured to enclose a circuit breaker assembly. The circuit breaker assembly is struct... | 06/20/2006 |
| 7047563 | Command authorization via RADIUS Command authorization may be accomplished using the RADIUS protocol by providing a user profile on the server for each user. This user profile may be transferred to a network device, such as a NAS, when the user initiates a NAS session. It may be stored in a local c... | 05/16/2006 |
| 6995327 | Four-way interlock system and bypass transfer switch employing the same An interlock system is for a bypass transfer switch including first, second, third and fourth circuit breakers. First, second, third and fourth interlock assemblies each include a mounting bracket coupled on or proximate to a corresponding one of the circuit breaker... | 02/07/2006 |
| 6943999 | Low cost safety switch interlock defeat operator An apparatus for defeating an interlock for an electrical cabinet permits a technician qualified to service the equipment within the cabinet to defeat the interlock and open the cabinet while current is flowing through the equipment therein, while permitting the int... | 09/13/2005 |
| 6643122 | Battery servicing system with bridging protection For use with a rack for supporting a first battery having first terminals and a second battery having second terminals, an interlock kit comprising a partition mount and a partition. The partition mount is couplable to the rack proximate the first battery... | 11/04/2003 |
| 6448519 | Contact system arrangement for plug-in circuit breakers and base A plug-in contact system for a plug-in type circuit breaker is disclosed. The movable contacts are easily engaged within the circuit breaker by the design of the contact support which includes a guiding protrusion, thus lowering the necessary insertion fo... | 09/10/2002 |
| 6414839 | Shutter mechanism for vertical bus of motor control center A compact automatic shutter mechanism in an electrical enclosure provides enhanced protection against inadvertent electrical contact for personnel working within and around the electrical enclosure, and also makes it possible to install more equipment in ... | 07/02/2002 |
| 6081419 | Protection device for an electronic instrument and method A protection device for an electronic instrument having a power supply, a power cord for attachment to the power supply, and an interlock member being movable between a first position preventing attachment of the power cord to the power supply, and a seco... | 06/27/2000 |
| 5761025 | Low cost power switchgear There is described a novel arc extinction method for use in switchgear, and improved, low cost power switchgear incorporating the novel arc quenching method. By physically severing the arc and the substantially simultaneous interposition of a high dielect... | 06/02/1998 |
| 5734547 | Power switchgear The present invention, in one form, is an apparatus for interrupting current flow between a fixed contact and a movable contact. An insulating partition has an aperture, and the fixed contact and movable contact are on opposite sides of the partition aper... | 03/31/1998 |
| 5701229 | Station device to which is connected an electronic apparatus such as tape recorder Electronic apparatus such as a tape recorder, a disc player or a radio receiver is connected to a station device. The electronic apparatus has a terminal portion for connection to the station device, an opening/closing unit for opening or closing the term... | 12/23/1997 |
| 5701232 | Sliding protection door for covering one or both of a pair of mutually exclusive electrical connectors An apparatus in a hand-held computing device for providing non-simultaneous user access to a pair of mutually exclusive electrical connectors is disclosed. The present invention includes a slidable door having three operative positions. In its closed posi... | 12/23/1997 |
| 5550707 | Low cost power switchgear There is described a novel arc extinction method for use in switchgear, and improved, low cost power switchgear incorporating the novel arc quenching method. By physically severing the arc and the substantially simultaneous interposition of a high dielect... | 08/27/1996 |
| 5497287 | Electrical port safety guard mechanism An electrical port safety guard mechanism in the form of a shutter assembly is positioned between the vertical power bus conductors in an electric motor control center and the electric components contained therein. The shutter assembly allows access to th... | 03/05/1996 |
| 5495888 | Heater control A heater control for controlling operation of a heater switch (12) in an evaporative cooler having an alternative heater mode in which a heater element (40) is energized and part of the air flow is blanketed by a shutter (37) controlled by a slide (24) or... | 03/05/1996 |
| 5486978 | Draw-out circuit breaker unit with coordinated cable interlock and shutter A cable interlock actuated by a plunger extended from the back of a draw-out circuit breaker when the breaker is closed, prevents closure of a second circuit breaker by holding it in the trip condition. A shutter which closes to prevent access to power sy... | 01/23/1996 |
| 5483416 | Adjustable insulating barrier arrangement for air insulated padmounted switchgear A barrier arrangement for use in a multiple-phase padmounted switchgear includes a pair of insulated upper and lower barrier panels mounted in spaced vertical tandem and stationary relation one above the other so as to define a gap therebetween and an ins... | 01/09/1996 |
| 5343355 | Safety shutter device for drawout type switch gear The safety shutter device comprises, a fixed shutter blade (19) provided on the front face of the lead conductor carrying member (11), at least one shutter driving unit accommodated in an insertion space (18) which is between the lead conductor carrying m... | 08/30/1994 |
| 5327321 | Protective shutter assembly for electrical terminals and method of using same The present invention provides a shutter assembly for covering an exposed electrical terminal located in a control center into which removably inserts an electrical control device connecting to the terminal. The assembly includes a shutter to cover the ex... | 07/05/1994 |
| 5181164 | Compartment barrier for padmounted switchgear In an electrical distribution apparatus a switchgear device has a fixed element disposed within a shielded region of an enclosure of the apparatus, and a movable element supported for movement between a closed position in contact with the fixed element an... | 01/19/1993 |
| 5097382 | Circuit device racking mechanism A racking mechanism for a fused circuit breaker includes a drive assembly that is removable as a unit from the breaker and fuse truck. A modular assembly includes a drive unit having a drive shaft and a travelling nut and yoke for rotating a pair of lever... | 03/17/1992 |
| 5001600 | Dead front fuse door A dead front fuse mounting assembly for use in high voltage enclosures, utilizes a shock absorber assisted door design to reduce impact forces which occur when such assemblies are improperly opened. Secondly the interior of the fuse compartment is closed ... | 03/19/1991 |
| 4926286 | Enclosed switchboard An enclosed switchboard has a contact frame fitted with contacts which can move relative to a unit frame having a circuit breaker, an electromagnetic switch, and an auxiliary relay, etc. mounted thereon. The contacts can be operated to disconnected, test,... | 05/15/1990 |
| 4868714 | IC card including enclosed sliding shutter An IC card having a package in which a semiconductor device is accommodated, a plurality of electrode terminals disposed on a surface of the package near the front end thereof in the direction in which the IC card is inserted into a connector in an extern... | 09/19/1989 |
| 4827374 | Flip out fuse assembly A dead front fuse mounting assembly supports the fuse on a hingedly mounted plate which can pivot through a 90° arc to allow access to the fuse. The plate can be latched in a circuit closed position and cannot be released therefrom until a high voltage e... | 05/02/1989 |
| 4688144 | Shutter assembly for a motor controller A shutter mechanism is provided for a motor control center of the type having a backwall with a stab opening for receiving a stab connector for making electrical contact with bus bars which are behind the panel. The shutter consists of two pieces, a stati... | 08/18/1987 |
| 4635225 | Magnetic bubble cassette A magnetic bubble cassette including a case containing a magnetic bubble device and a connector. The cassette has a cover that is pivotably mounted by means of a support pin on the end of said case so as to permit opening and closing of the case. When the... | 01/06/1987 |
| 4486815 | Shutter device for control unit of control center A shutter device is provided for each of a plurality of control unit removably accommodated in vertically superposed unit spaces of a control center. A plate-shaped protective barrier is disposed on the rear surface of each unit space and includes three r... | 12/04/1984 |
| 4468531 | Safety shield assembly for a drawout-type circuit breaker A safety shield assembly for insertion within a drawout circuit breaker compartment between the load and line receivers in the compartment and the power stabs on the circuit breaker. The shield assembly utilizes a moveable shield, a pair of spring motors ... | 08/28/1984 |
| 4447682 | Isolation shields for a 2500-4000 amp circuit breaker compartment A shield mechanism for isolating line and load stabs within a 2500-4000 ampere circuit breaker compartment is disclosed having a primary operating arm for operating a lower moveable shield and an upper moveable shield interconnected by a reversing bell cr... | 05/08/1984 |
| 4443676 | Interchangeable shield arrangement for a circuit breaker compartment A shield unit for interchangeable fit within circuit breaker compartments of various manufacture contains a split linkage arrangement of two pivotally connected arms, a return spring and a connecting spring to operate a shield linkage mechanism. The shiel... | 04/17/1984 |
| 4424425 | Circuit breaker compartment shield assembly A shield assembly for isolating line and load stabs within a circuit breaker compartment when the circuit breaker is removed from the compartment. The assembly consists of a pair of separately hinged shields interconnected by a link which terminates in a ... | 01/03/1984 |
| 4417108 | Switchgear shutter There is provided by this invention a novel switchgear shutter design employing curvilinear displaced shutter means which provide an entirely metallic grounded surface between the potentially live contacts and the front of the compartments. This novel shu... | 11/22/1983 |
| 4395602 | Isolation shield for circuit breaker compartment secondary disconnects A slideably mounted insulating shield is positioned over the terminals of a secondary disconnect attached to the side wall of a circuit breaker compartment. Inserting the circuit breaker into the compartment brings the secondary disconnect terminals on th... | 07/26/1983 |
