High-voltage switches with arc preventing or extinguishing devices inventions 02/09

20090050605 - Circuit breaker having automatic release linkage: Disclosed is a circuit breaker having an automatic release linkage capable of preventing damage and deformation of elements by automatic linkage release before electro-impulsive force generated from within the circuit breaker by a large short-circuit current causes the damage and deformation of open/close linkage.... Agent: Lee, Hong, Degerman, Kang & Waimey

20090045170 - Earthing switch: In an earthing switch a release mechanism releases pressure stored in a puffer type arc cancelling chamber by releasing the chamber at a predetermined area toward a stationary contact unit during a full stroke extent of a movable contact unit so that the puffering operation can be deterred from execution.... Agent: Buchanan, Ingersoll & Rooney PC

20090045171 - Circuit breaker with high speed mechanically-interlocked grounding switch: A circuit breaker apparatus with an integrated grounding switch has a housing with first and second bushings extending outwardly of the housing. A first vacuum bottle is positioned in the housing and has a pair of contactors therein. A second vacuum bottle is positioned in the housing and has a... Agent: Egbert Law Offices

20090032500 - Vacuum insulated switch and vacuum insulated switchgear: The vacuum insulated switch includes a vacuum container; two stationary contacts contained in the vacuum container; two movable contacts contained in the vacuum container, each capable of contacting and separating from a corresponding one of the stationary contacts; a vacuum insulated actuating rod connected to the two movable contacts; an... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.