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| Number | Title | Issue Date |
| 7369022 | Auxiliary switch sub-assembly and electrical switching apparatus employing the same An auxiliary switch sub-assembly is provided for a telecommunication system circuit breaker including a housing having an opening, separable contacts inside the housing, and an operating mechanism operating the separable contacts between open and closed positions. T... | 05/06/2008 |
| 7319373 | Electrical switching apparatus and terminal housing therefor An auxiliary switch terminal housing is provided for a telecommunication system circuit breaker including an enclosure, separable contacts inside the enclosure, line and load terminals in electrical communication with the separable contacts, an operating mechanism f... | 01/15/2008 |
| 7250836 | Terminal support for a circuit breaker trip unit A terminal assembly for use in a circuit breaker. The terminal assembly includes a first member and a second member abutting the first member. The second member includes a pair of protruding arms to be inserted into a corresponding pair of recesses in a circuit brea... | 07/31/2007 |
| 7220933 | Arc quenching device for circuit breakers The present invention specifies an arc quenching device having improved current limitation and reduced heat losses, in the case of which a moving contact piece (31) is not subject to increased erosion and wear. For this purpose, a quenching path according to ... | 05/22/2007 |
| 7187258 | Circuit breaker A circuit breaker includes an elongated movable contact having a contact at one end thereof for flowing a current therethrough and the other end rotatably supported with a holder, and a protection cover made of an insulating material for covering and protecting a mo... | 03/06/2007 |
| 7148774 | Contact assembly A circuit breaker contact assembly includes a line conductor having a folded back fixed contact end, a fixed contact mounted on the contact end, and a movable contact arm having an inner edge and first and second ends. A movable contact is mounted on the first end. ... | 12/12/2006 |
| 7141751 | Breaker for providing successive trip mechanism based on PTC current-limiting device Disclosed is a breaker for providing successive trip mechanism based on PTC current-limiting device, which includes a first switch having first fixed/movable contact points; a second switch having second fixed/movable contact and connected to the first switch in par... | 11/28/2006 |
| 7105764 | Monolithic stationary conductor and current limiting power switch incorporating same A current limiting power switch has a monolithic stationary conductor with a conductor section that mounts fixed contacts that engage moving contacts on moving contact fingers to form a reverse current loop with the contacts closed. A terminal section projects trans... | 09/12/2006 |
| 7102471 | Electrical power breaker with a switching contact arrangement having a current loop A power breaker includes a switching contact arrangement having a current loop in order to allow a force dependent on the current to act on the contact members. For this purpose, sections, which are arranged parallel to one another and such that they are arched and ... | 09/05/2006 |
| 7091438 | Circuit breaker with improved arc extinction system An improved circuit breaker includes an arc extinction system having one or more insulators that generates a desirable gas in the presence of an arc. The exemplary circuit breaker includes gas-generating insulators disposed at three sides of a stationary contact and... | 08/15/2006 |
| 5583328 | High voltage switch including U-shaped, slitted stationary contact assembly with arc extinguishing/magnetic blowout features A switch includes a fixed contact having a first conductor portion connected to a terminal, a second conductor portion having a stationary contact, and a third conductor portion. The third conductor portion is disposed on the side of the other end of a mo... | 12/10/1996 |
| 5313031 | Electric switch gear with improved stationary contact configuration A switch is configured that: in the closed-circuit state, at least part of its movable contact arm enters into a oblong generally hexahedral space defined by its elongated stationary conductor in its closed circuit position. Both contacting and breaking o... | 05/17/1994 |
| 5268661 | Current throttle technique A circuit interrupter characterized by a movable contact on a contact-carrying arm movable between open and closed positions of a stationary contact mounted on one leg of a U-shaped conductor with another leg secured to the circuit breaker housing with a ... | 12/07/1993 |
| 4996507 | CT quick change assembly and force transmitting spacer A molded case circuit breaker is provided with a quick change current transformer assembly. The current transformer is used to sense overcurrent conditions and apply a signal to an electronic trip unit to trip the circuit breaker. The quick change assembl... | 02/26/1991 |
| 4891618 | Laminated copper assembly A laminated contact assembly is formed from a number of individual contact assemblies. Each individual contact assembly includes a contact arm portion, which carries a movable main or arcing contact and a stationary conductor portion. A flexible shunt is ... | 01/02/1990 |
| 4849590 | Electric switch with counteracting electro-electro-dynamic forces A switch has contacts constructed so that an electro-dynamic force is created by the current flowing through the switch which tends to maintain the switch in a closed state. This force counteracts other electro-dynamic forces which tend to open the switch... | 07/18/1989 |
| 4654491 | Circuit breaker with contact support and arc runner A circuit breaker characterized by a movable contact on a contact-carrying arm movable between open and closed positions of a stationary contact mounted on one leg of a U-shaped conductor with another leg secured to the circuit breaker housing, a U-shaped... | 03/31/1987 |
| 4654490 | Reverse loop circuit breaker with high impedance stationary conductor A reverse loop circuit breaker characterized by a movable contact mounted on a contact-carrying arm movable between open and closed positions of a stationary contact that is mounted on one leg of a U-shaped conductor with another leg secured to the circui... | 03/31/1987 |
| 4636762 | Contact assembly having a current-dependent force increasing the contact force A contact assembly for electrical circuit breakers has a contact lever and a lever support with the contact lever mounted thereon in an articulate fashion. The support lever is flexibly positioned around a fixed pivot bearing by a drive linkage device for... | 01/13/1987 |
| 4635014 | Contactor having a Z-shaped current path for blow-out force reduction The electromagnetic forces tending to force open the contacts of an electromagnetic contactor are reduced by providing a current flow path having a geometry that tends to minimize the magnetically produced forces acting upon the movable contact of an elec... | 01/06/1987 |
| 4608545 | Movable contact arm assembly for a current limiting circuit breaker A movable contact arm assembly is provided for a circuit breaker. The contact assembly includes a carrier which has first and second guide plates with aligned roller guides and bracket supports and a roller which has a middle portion extending between the... | 08/26/1986 |
