Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 8101881 | Arc resistant switchgear vertical exhaust system An exhaust system for exhausting gases and molten debris caused by an electric arc within a switchgear. The exhaust system includes a switchgear having lower and upper compartments and an exhaust unit externally mounted to the switchgear. A wall panel of the switchg... | 01/24/2012 |
| 8063335 | Gas exhaust for circuit breaker The gas exhaust comprises a generally cylindrical shaped casing closed by a bottom at one end and with openings to allow gas to escape. A duct is arranged in the casing to delimit a central passage inside the duct, and an annular passage surrounding the central pass... | 11/22/2011 |
| 7893379 | Generator circuit breaker with improved switching capacity The disclosure relates to an electrical switching device, e.g., a generator circuit breaker, and to a method for improved switching-gas cooling. Gas jets are formed by a nozzle body in the exhaust area, are directed against a baffle wall and are swirled. The baffle ... | 02/22/2011 |
| 7586058 | Electrical switching apparatus, and ARC hood assembly and chimney therefor A chimney is provided for a circuit breaker arc hood assembly. The circuit breaker housing includes a number of arc chute vents structured to exhaust arc gases. The arc hood assembly includes a body having a first side facing the housing, and a second side opposite ... | 09/08/2009 |
| 7586057 | Electrical switching apparatus and vented case therefor A vented case is provided for an electrical switching apparatus including an arc chute structured to attract and dissipate an arc. The arc produces an ionized gas. The vented case includes at least one housing member comprising an interior, an exterior, a first end,... | 09/08/2009 |
| 7368679 | Arrangement comprising a low voltage power switch and a switching gas damper provided with a carrier element and used for the low voltage power switch A switching gas damper is for low voltage power switches, especially for low voltage power switches which can be inserted into low voltage switching installations. The switching gas damper is arranged above an arc extinguisher of the low voltage power switches and i... | 05/06/2008 |
| 7336477 | Electrical switching apparatus and heat sink therefor A heat sink is for an integrally fused low-voltage power air circuit breaker including a line terminal and electrical bus work coupled to a current limiter. The line terminal, electrical bus work, and current limiter contribute to the formation of a thermal dam. The... | 02/26/2008 |
| 7236352 | Arc resistant switchgear having dedicated vertical plenums An arc resistant switchgear assembly is provided having a front wall, a rear wall, a bottom surface, an upper surface, a first side wall, and a second side wall opposed to the first side wall and spaced a first distance from the first side wall, with each of the fir... | 06/26/2007 |
| 7199318 | Air guidance device for cooling a switch part of an electrical switch An air guidance device is for cooling a switch part of an electrical switch. It includes at least one air guidance element arranged at a distance from the switch part to be cooled, forming at least one air duct which runs vertically when the switch is in the install... | 04/03/2007 |
| 7186941 | Arc extinguisher assembly for molded case circuit breaker An arc extinguisher assembly is provided for a mould cased circuit breaker capable of reducing time for arc extinguishing and preventing contacts from being damaged due to a back flow of an arc. To this end, the arc extinguisher assembly for a mould cased circuit br... | 03/06/2007 |
| 7176771 | Circuit breaker filter assembly An improved filter assembly for a circuit breaker includes a generally rectilinear filter housing having at least two filter mounting zones for receiving at least two filter assemblies, so as to define, in the aggregate, a filter assembly, and at least two filter as... | 02/13/2007 |
| 7170020 | Circuit breaker and terminal cover A circuit breaker includes terminals with screws on a power supply side and a load side disposed at a front end section and a rear end section of a main body case containing a current interrupting unit and a switching mechanism. A terminal cover is detachably attach... | 01/30/2007 |
| 7157997 | Electromagnetic contactor An electromagnetic contactor in which neighboring main contact points have an interphase barrier between them. A concave section is provided at the inner wall face of the interphase barrier at the middle of the emission path of the arc gas that is generated from the... | 01/02/2007 |
| 7140702 | Medium voltage motor control center arc resistant enclosure A medium voltage controller for electrical equipment, such as motors, transformers, reactors, and capacitors, having an arc resistant cabinet, swaged internal electrical connections, a one-piece self-aligning withdrawable finger cluster, a pull-out instrument compar... | 11/28/2006 |
| 7130722 | Smart disconnect switch interbase Apparatus (10) for controlling supply of electricity through an electrical distribution network to a customer. An electrical meter (12) is plugged into an electrical socket (14) at a customer's premises. Electricity flows from a power line throu... | 10/31/2006 |
| 7095606 | Electric switchgear with an enclosed design The aim of the invention is to prevent an unwanted conduction of a flow of gas inside a channel that connects an inner space of an enclosed switchgear (1) to another space. To this end, the channel is closed by means of a closing mechanism according to an inc... | 08/22/2006 |
| 7094986 | ARC chute assembly The arc plates of an arc chute assembly for a circuit breaker are supported in spaced, stacked relation by a structural shell molded of a gas evolving resin. Generation of arc gases, that cool the arc thereby increasing the current interruption capability of the bre... | 08/22/2006 |
| 7084603 | Motor control device A motor control device that can reduce electrical noise is provided. A motor control device includes an inverter, a current controller, a high frequency wave superpositioner, and a high frequency wave setter. An inverter applies a current to the motor. A current con... | 08/01/2006 |
| 7054143 | Electrical installation comprising a decompression channel The invention relates to an electrical installation, especially a medium-voltage switchgear, comprising at least one encapsulated function module (FM), a decompression channel (DK) which is connected to said function module, and at least one inflow opening (EO . . .... | 05/30/2006 |
| 7034241 | Efficient venting means for a circuit breaker An arrangement for reducing pressure inside a circuit breaker caused by gas produced during an electrical interruption event, including a base, an interrupter assembly, and a trip unit base. A structure having a surface is positioned in the base at an angle relative... | 04/25/2006 |
| 7034242 | Arc chute and circuit interrupter employing the same A circuit interrupter arc chute includes first and second support portions, an exit portion supported by the support portions, and a plurality of arc plates supported by the support portions. The exit portion has one or more vent openings. The arc plates have a firs... | 04/25/2006 |
| 7009132 | Terminal assembly for vented circuit breaker and circuit breaker incorporating same A circuit breaker vents at least some of the arc gases generated during current interruption from an internal cavity containing separable contacts through a terminal recess vent in a wall in the housing into an external terminal recess. The line side main conductor ... | 03/07/2006 |
| 7009126 | Load terminal cover A terminal cover for use on molded case circuit breakers. The terminal cover limits access to circuit breaker electrical terminals and uninsulated portions of electrical conductors entering the terminals. The terminal cover also provides selective access to the term... | 03/07/2006 |
| 6977354 | Arc hood and power distribution system including the same An arc hood includes a housing having a first chamber with two ends, a top and a bottom having an opening, and a smaller second chamber disposed on the top of the first chamber. The smaller second chamber includes two ends, a top and a bottom. Each of the ends of th... | 12/20/2005 |
| 6960736 | Switching gas damper for low-voltage power circuit breakers A switching gas damper for low-voltage power circuit breakers, is arranged as an attachment above the arcing chambers for additional damping, deionization and cooling of the switching gases. The switching gas damper includes a cuboid enclosure with separate inlet op... | 11/01/2005 |
| 6936781 | Load terminal cover A load terminal cover assembly for use on circuit breakers installed in electrical enclosures. The assembly selectively limits access to circuit breaker load terminals and uninsulated portions of load conductors entering the load terminals when the enclosure cover a... | 08/30/2005 |
| 6930577 | Circuit breaker lug cover and gasket A molded insulator cover for a circuit breaker molded case includes a terminal connector attachable to the strap terminal. The terminal connector is disposed in the circuit breaker molded case and an insulator discrete from the molded case is disposed around the ter... | 08/16/2005 |
| 6930573 | Interlocking cassettes for dimensional stability A multipole cassette assembly having a center pole cassette assembly includes a first side and a second side, a first outer pole cassette assembly having a first side and a second side, a first spacer interlocking receptacle positioned on one of the first side of th... | 08/16/2005 |
| 6924721 | Gas segregator barrier for electrical switching apparatus A gas segregator barrier is for quenching, segregating and controllably directing ionized gases discharged from a pair of spaced-apart circuit breakers double-branch mounted within a panelboard assembly. The spaced-apart circuit breakers include corresponding pairs ... | 08/02/2005 |
| 6762389 | Gas discharge filter for electrical switching apparatus A gas discharge filter is for cooling ionized gases discharged from a circuit breaker. The circuit breaker includes separable contacts electrically connected in series between line and load terminals, a housing, an arc chamber within the housing structured to exting... | 07/13/2004 |
| 6750743 | Integrated thermal and magnetic trip unit A circuit breaker for a multi-pole electrical distribution circuit includes a cassette associated with each pole in the multi-pole electrical distribution circuit. Each cassette includes a housing, a pair of electrical contacts disposed in the housing, and a thermal... | 06/15/2004 |
| 6717791 | High-voltage circuit breaker with interrupter unit In a high-voltage power breaker having an interrupter unit which is enclosed, with a gap, by a gas-tight housing (16) filled with quenching gas, the interrupter unit has two arcing contacts (1,2) between which an arc produced during disconnection is bl... | 04/06/2004 |
| 6703575 | Arc-extinguishing system for a contact switching apparatus An arc-extinguishing system for a contact switching apparatus having a plurality pieces of grid plate for arc extinction arranged outside the contact switching apparatus so as to be substantially vertical to a movable contact, and an arc box as well as an... | 03/09/2004 |
| 6703576 | Arc chute with valve and electric power switch incorporating same A main valve for an arc chute is formed by a flexible sheet member that is mounted over a gas opening of the arc chamber structure by extensions on arc plates that form guides received in elongated slots in the ends of the flexible sheet member. The force... | 03/09/2004 |
| 6670872 | Low-voltage circuit breaker with an arc-extinguisher chamber and a switching gas damper A low-voltage circuit breaker (1) has an arc-extinguishing chamber (2) and a switching gas damper (4) which consists of two partial bodies (6, 7) that are displaceable in relation to each other. One (6) of the partial bodies (6, 7) is fixed to the circuit... | 12/30/2003 |
| 6624375 | Wire lug/arc vent barrier molded case circuit breaker The present invention provides a wire lug arc vent barrier for protecting a wire lug in a molded case circuit breaker, with the circuit breaker having a housing with a terminal for a load connection and a terminal for a line connection. The wire lug/arc v... | 09/23/2003 |
| 6512192 | Exhaust arc gas manifold A circuit breaker fitted with an exhaust arc gas manifold arranged over ventilation slots of the circuit breaker and disposed at a line end thereof to redirect the arc exhaust gases exiting the ventilation slots. The exhaust arc gas manifold is fixedly at... | 01/28/2003 |
| 6512669 | Medium voltage motor control center instrument compartment A medium voltage controller for electrical equipment, such as motors, transformers, reactors, and capacitors, having an arc resistant cabinet, swaged internal electrical connections, a one-piece self-aligning withdrawable finger cluster, a pull-out instru... | 01/28/2003 |
| 6407354 | Electrical switching apparatus including a baffle member having a deflectable flap A circuit breaker includes an electrically insulating housing, an arc chamber, line and load terminals, separable contacts in series with the terminals, and an operating mechanism. The open position of the separable contacts causes arcing therebetween and... | 06/18/2002 |
| 6407331 | Pressure relief panel for arc resistant cabinets A panel, preferably a ceiling panel, for an arc resistant cabinet defines at least one flap dimensioned and configured to bend outward in response to excessive pressure within the cabinet. The flap is bent into a position wherein it will direct high tempe... | 06/18/2002 |
