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| Number | Title | Issue Date |
| 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 |
| 6969816 | Switching arrangement for low-voltage circuit breakers A switching arrangement for low-voltage circuit breakers with a high nominal current includes movable switching contacts arranged essentially on a moveable contact carrier. It further includes fixed switching contacts and a device for cooling, de-ionizing and exting... | 11/29/2005 |
| 6590172 | Circuit breaker mechanism for a rotary contact system A circuit breaker is provided wherein the circuit breaker comprises a contact arm movable between a closed position, an open position and a blown open position wherein the contact arm is disposed in the circuit breaker. A bumper disposed to contact the co... | 07/08/2003 |
| 6414255 | Switch A switch device for switching an electrical connection between two connection parts is disclosed. Conventional switch devices comprise a contact lever having a switch contact, the flow of current taking place by way of the contact lever when the switch de... | 07/02/2002 |
| 6376788 | Magnetically collapsible toggle linkage for electrical switching apparatus An electromagnetic blow-open device for a pole of a circuit breaker where the pole has a stationary contact and a movable contact. The movable contact includes contact fingers mounted on a contact carrier. The contacts have an open position and a closed p... | 04/23/2002 |
| 6369340 | Circuit breaker mechanism for a contact system A rotary contact circuit breaker employs a crank to couple a switching mechanism to the rotary contact pole structure. The use of a crank allows for the mechanism and pole structure the individually optimized without effecting the performance of the other... | 04/09/2002 |
| 6310307 | Circuit breaker rotary contact arm arrangement A rotary contact arrangement for circuit breakers of the type including a pair of movable contacts (30,36), one arranged on each end of the rotary contact arm (32), utilizes a single pair of contact springs (38), one spring on each side of the rotary cont... | 10/30/2001 |
| 6121560 | Switching contact system for a low voltage power switch with flexible conductors A switching contact system of a low-voltage circuit breaker has a bus with cord-like flexible conductors attached thereto. The flexible conductors are accommodated between a connecting surface (30) of the bus (26) and an end piece (27), which is in contac... | 09/19/2000 |
| 6114641 | Rotary contact assembly for high ampere-rated circuit breakers A circuit breaker rotary contact assembly employs a common pivot between the rotor assembly and the rotary contact arm. A pair of off-center expansion springs directly engage the rotor at one end and engage the rotary contact arm via a linkage arrangement... | 09/05/2000 |
| 6103986 | Circuit breaker including bridging contact with magnetic structure A U-shaped magnetic plate is positioned on the side of a movable contact shoe opposite to a fixed contact shoe, and the tips of the respective legs of the magnetic plate face via a gap the movable contact shoe in a closed condition of the movable contact ... | 08/15/2000 |
| 6015957 | High ampacity pinless conducting joint in movable contact arm assembly An air circuit breaker movable contact arm assembly is presented. The movable contact arm assembly comprises an electrically-conductive support having at least one slot formed therein to receive a first end of the movable contact arm. The movable contact ... | 01/18/2000 |
| 5927484 | Circuit breaker with welded contact interlock, gas sealing cam rider and double rate spring A circuit breaker includes a housing, an operating mechanism and separable main contacts, and a rotatable crossbar which rotates to open and close the contacts. The crossbar interacts by way of a protrusion thereon with a rotatable, positive off-link. A h... | 07/27/1999 |
| 5899323 | Electrical switching apparatus with contact finger guide A contact guide member extends transversely to the contact fingers on the contact carrier of electrical switching apparatus and has spaced openings through which the contact fingers extend and are held in spaced relation. The contact finger guide member i... | 05/04/1999 |
| 5793270 | Circuit breaker with latch preventing rebound of blow open contact arm The movable contact arms of a circuit breaker are latched in the blow open position to prevent rebound and possible restrike of the arc in response to the very high magnetic repulsion forces generated by a short circuit in the protected electrical system.... | 08/11/1998 |
| 5780800 | Circuit breaker contact arm and spring shield An arc isolation shield for molded case circuit breakers is inserted between the circuit breaker case and cover and attached to one leg of the operating cradle. The knee of the circuit breaker moveable contact arm contacts the bottom of the shield and mov... | 07/14/1998 |
| 5596184 | Switch including a moving element, a repelling element and a conductor A switch includes a moving element having a traveling contact at one end thereof, and a repelling element having a repelling contact at one end thereof and extending substantially parallel to the moving element, and the repelling contact capable of making... | 01/21/1997 |
| 5585609 | Circuit breaker with movable main contact multi-force-level biasing element A circuit breaker including a base having an operating mechanism mounted thereon, a line contact blade assembly coupled to the operating mechanism for movement between open and closed positions, and a load contact blade assembly pivotally supported by a t... | 12/17/1996 |
| 5341191 | Molded case current limiting circuit breaker A molded case circuit breaker having current limiting capabilities optimized for relatively smaller frame sizes. More specifically, one aspect of the invention relates to a two-piece carrier assembly for carrying the main and arcing contact arms which all... | 08/23/1994 |
| 5189384 | Circuit breaker having improved contact structure A power circuit breaker having movable and relatively stationary contact assemblies operable between open and closed positions. The contact assemblies respectively include pivotally mounted first and second conductive members. The first and second conduct... | 02/23/1993 |
| 5072082 | Electromagnetically locked contact blade A high voltage ground blade assembly which has a folding member to aid in breaking ice and lowering the force to operate the blade assembly in combination with an electric coil which creates an electromagnetic force to prevent the folding member from movi... | 12/10/1991 |
| 4926018 | Moving mains arc movement loop A contact blade for a circuit breaker configured such that the current path in the blade produces a magnetic field which affects an arc present at the contact of the blade. The configuration of the blade produces a substantially U-shaped current loop in t... | 05/15/1990 |
| 4926019 | Moving copper pivot A pivoting electrical connected useable in a molded case circuit breaker including a pair of contact plates for contacting the circular contact member of a contact carrying arm. The pivoting electrical connection provides at least three contact locations ... | 05/15/1990 |
| 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 |
| 4845459 | Contact arrangement of a low-voltage circuit breaker with electro-dynamic breaking A contact arrangement of a low-voltage circuit breakeer with electrodynamic breaking or opening. In contact arrangements which contain a compression spring for pretensioning a contact lever into the make position or after a dead center position is passed,... | 07/04/1989 |
| 4745384 | Circuit interrupter A circuit interrupter comprises a contact arm assembly for supporting the movable contact composed of a first contact arm and a second contact arm pivotally supported by a common pin, the first contact arm having an elongated guide hole extending in the d... | 05/17/1988 |
| 4698607 | High speed contact driver for circuit interruption device A bridging contact is arranged across two fixed contacts with a pair of parallel, closely spaced conductors serving as the bridging contact carrier. The conductors each form a pair of upper and lower links joined by means of a toggle pivot pin and are ref... | 10/06/1987 |
| 4695690 | Closing delay arrangement for current limiting circuit breaker contacts A control arrangement to prevent or delay the closing of current limiting circuit breaker contacts after opening by repulsion due to a short circuit is disclosed. A first contact arm and a second contact arm are operatively associated with a ratchet or pa... | 09/22/1987 |
| 4638277 | Circuit breaker with blow open latch An electric circuit breaker with blow open contact arm characterized by a pair of separable contacts one of which is mounted on a contact arm that is rotatably mounted on mounting bracket. The contacts maintain a repulsion magnetic force which operates to... | 01/20/1987 |
| 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 |
| 4614928 | Automatic switch with an arc blast field An automatic switch wherein a movable switch lever bears a contact element which cooperates with a fixed contact element bonded to a ferromagnetic contact strip which serves to provide a compact arc-extinguishing device. The ferromagnetic metal strip is m... | 09/30/1986 |
| 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 |
| 4598187 | Current limiting circuit breaker A current limiting circuit breaker utilizes a first pair of contacts for carrying continuous current and controlled by an operating mechanism. A second pair of contacts is arranged on a pair of movable contact arms ahead of an arc chute for rapid repulsio... | 07/01/1986 |
| 4562419 | Electrodynamically opening contact system An electrodynamically opening contact system including a fixed and a movable contact element. The movable contact is biased by a prestressed spring arrangement which is pivotally mounted at one end while at its other end slidably engages the movable conta... | 12/31/1985 |
| 4485283 | Current limiter unit A current limiter unit employs both a magnetic repulsion field and a gas pressure force to direct arcs to within the high voltage region of an arc chute. The unit confines the evolved gas pressure in all directions except in the direction of the arc plate... | 11/27/1984 |
| 4454395 | Circuit breaker A circuit breaker having means for quickly opening a pair of contacts, a U-shaped flux board which surrounds the conductors that have contacts attached to the end portions thereof, so that the electromagnetic repulsive force produced by the electric curre... | 06/12/1984 |
| 4430631 | Circuit breaker with increased current interrupting capacity A narrow width, molded case circuit breaker having parallel, oppositely directed current paths in a conductive stationary contact support (8c) and a pivoting movable contact arm (12b) to cause separation of the contacts (10, 16) by repelling electromagnet... | 02/07/1984 |
| 4370636 | Electromagnetic dual break contactor An electromagnetically operated, straight-line motion dual-break electrical contactor has current conductors entering a contact area from opposite directions. In the contact area the conductors are closely spaced and have finite parallel substantially fla... | 01/25/1983 |
| 4302644 | Contact breaker with magnetic arc blowing An electrical contact breaker has a stationary contact, and a movable contact. The movable contact is connected to a terminal by a flexible conductor. For blowing out the arc formed when the contacts separate under load, there is a blowing means including... | 11/24/1981 |
| 4301341 | Electrical switchgear On opening of a circuit breaker, an end portion of a pivotable contact arm disengages from fixed contacts such that an arc is drawn therebetween radially across the pole face of a field coil, the end portion of the contact arm moving transversely to the f... | 11/17/1981 |
