High-voltage switches with arc preventing or extinguishing devices inventions 09/07

20070221626 - Gas insulated switchgear: The invention secures superior performance by restraining carbon generation also when using as an arc extinguishing medium a gas comprising the element C and having a global warming potential lower than that of SF6 gas. A fixed contact section and a movable contact section are arranged opposite each other inside... Agent: Foley And Lardner LLP Suite 500

20070221627 - Electric power source for motor vehicle: An electric power source for a motor vehicle is equipped with a welded state discriminator, and while a positive-side contactor and negative-side contactor are controlled to be switched off, the welded state discriminator detects a voltage of a positive-side contactor or negative-side contactor on its loading side with respect to... Agent: Wenderoth, Lind & Ponack, L.L.P.

20070215576 - Electric shock prevention residual current circuit breaker: An electric shock prevention residual current circuit breaker provides electrical shock protection before contact of any current. The circuit breaker eliminating the flaws of the concurrent residual current circuit breakers comprises a digital logic microcontroller, a fault sensor circuit, an electromagnetic trip circuit, a low voltage supply circuit, a ground... Agent: Ruay L. Ho Suite 400

20070215577 - Mold cased circuit breaker: A mold cased circuit breaker is disclosed that enables a user to easily discern an actually connected state between stationary contactors and movable contactors and forcibly separates a connection therebetween if there arises electrical fault, wherein the circuit breaker comprises: a first isolation link hinged at a lower end thereof... Agent: Lee, Hong, Degerman, Kang & Schmadeka

20070205182 - Switching chamber and heavy-duty circuit breaker: The switching chamber for a heavy-duty circuit breaker which can be filled with a quenching gas has a first arcing contact piece (1) and a second arcing contact piece (2), of which at least one (1; 2) can be moved by means of a drive. An arc (4) may burn... Agent: Buchanan, Ingersoll & Rooney PC

20070205183 - Power control device: A power control device prevents unauthorized and unwanted use of electrical devices by locking the plug of the electrical device in the power control device, when the current flowing through the power control device is stopped. The device includes a switch, moveable between on and off conditions by moving a... Agent: Lathrop & Gage Lc