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| Number | Title | Issue Date |
| 8183489 | Contact element An electric contact element for an arcing contact including a contact body arranged to be applied against a contact element. The contact body includes a Mn+1AXn-material, wherein M is at least one transition metal, A is at least one element sel... | 05/22/2012 |
| 7754992 | High current switch and method of operation An electrical switch which includes an insulative housing having a wall defining an axial bore therein, a first electrical contact disposed in the housing bore and a second electrical contact movably disposed in the housing bore between an open position and a closed... | 07/13/2010 |
| 7217895 | Electrical switching apparatus contact assembly and movable contact arm therefor A contact assembly for a circuit breaker includes a fixed contact, a movable contact, and a movable contact arm. The movable contact arm includes a first end carrying the movable contact, a second end, and a pivot portion proximate the second end. A moving arm porti... | 05/15/2007 |
| 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 |
| 6838627 | Contact element and a contact arrangement An element (20) for making an electric contact to another contact member (19) for enabling an electric current to flow between said element (20) and said contact member comprises a body having at least a contact surface thereof coated with a con... | 01/04/2005 |
| 6838632 | Switch contact device for interrupting high current, high voltage, AC and DC circuits A high voltage switch contact structure capable of interrupting high voltage, high current AC and DC circuits. The contact structure confines the arc created when contacts open to the thin area between two insulating surfaces in intimate contact. This forces the arc... | 01/04/2005 |
| 6798325 | Connector rail made of profiled semifinished products for electrical devices and appliances for various nominal currents A connector rail includes a full profile which is provided with first bearing surfaces and second bearing surfaces which are used to provide support in the window opening of the rear wall of the housing. The second bearing surfaces are provided with projections for ... | 09/28/2004 |
| 6774751 | Connecting bars for electrical devices and apparatus for different nominal currents having a cavity Connecting bars are made from profiled semifinished products and have a cavity. The bars have the same outer dimensions for different nominal currents and are intended for connecting the electrical components of electrical devices and apparatus to an external electr... | 08/10/2004 |
| 6717089 | Electric pole for low-voltage power circuit breaker An electric pole for a low-voltage power circuit breaker, comprising: a fixed contact and a movable contact which can be mutually coupled/uncoupled; at least two conducting elements, suitable to electrically connect the movable contact to a power suppl... | 04/06/2004 |
| 6403901 | Spring biased contact system including a rotatable symmetrical contact with two lever arms A contact system having a two-armed contact arm equipped at its opposite ends with contact pieces that can be brought into and out of contact with corresponding contact pieces of stationary busbars. The contact arm is mounted rotatably on a central bearin... | 06/11/2002 |
| 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 |
| 6271493 | High voltage disconnector with fixed and locking members secure under Lorentz forces A high voltage disconnector comprising a fixed contact and a movable contact to the latter to produce an electrical connection between a first conductor and a second conductor, the movable contact and the fixed contact forming, when they are in contact wi... | 08/07/2001 |
| 6242707 | Arc quenching current limiting device including ablative material A current limiting device for protecting electrical circuits has a case and a pair of separable electrodes disposed within the case. Each electrode has a plurality of openings with an ablative member abutting the openings at an outer surface of the electr... | 06/05/2001 |
| 6236010 | Circuit interrupter including a penetrating electrical contact with grip and release structure A penetrating contact design that decreases the time needed to move the male and female contacts of a circuit interrupter from a closed circuit position to an open circuit position. The penetrating contact has a grip-enhancing member that can be located o... | 05/22/2001 |
| 6232570 | Arcing contact arrangement A rotary double-break circuit breaker includes a case defining a circuit breaker enclosure with a rotatable bridge and contact arm arrangement. The contact arm having movable contacts which is rotatable between a closed position and an open position. A pa... | 05/15/2001 |
| 6229109 | Power circuit breaker with rack-pinion operating mechanism for movable contact A contact pin is operationally connected through racks and pinions to a movable mating contact arrangement in such a way that it executes a movement counter thereto. Through two spokes through which the racks are guided, it bears a contact ring which surr... | 05/08/2001 |
| 6211479 | Persistent current circuit switch The invention provides a persistent current circuit switch of high performance having a small contact resistance. The persistent current circuit switch has a pair of oppositely arranged electrodes and ends of the electrodes are brought into line contact o... | 04/03/2001 |
| 6211478 | Switching arrangement and method for its production In a power switch, power-switch fingers of a rated-current switching arrangement, as well as contact fingers (25) of a tulip contact and a switching pin (14) of an arcing switch arrangement, or other parts, each comprise a base body (26, 28) which, at sec... | 04/03/2001 |
| 6188035 | Electrical contact wear and temperature indicator The design of electrical switches that operate under load (with current flowing) requires replacement of the electrical contact after erosion and wear experienced by arcing and raised temperatures reduce functionality below acceptable limits. A quantity o... | 02/13/2001 |
| 6100492 | Consumable switching arrangement A wreath of contact fingers (4) directed radially toward a switching axis (1) presses in the closed position against the circumferential surface of a contact pin (2) with consumable heads (5) fitted on the ends. At an angle of approximately 90°, the cont... | 08/08/2000 |
| 6100489 | Consumable switching arrangement In the switched-on position, under the influence of contact forces generated by elastic deflection or else by mechanical spreading, or spreading caused by the attraction of parallel currents or repulsion of antiparallel currents, of a switching pin (5) , ... | 08/08/2000 |
| 6023036 | Electrical contact wear and temperature indicator The design of electrical switches that operate under load (with current flowing) requires replacement of the electrical contact after erosion and wear experienced by arcing and raised temperatures reduce functionality below acceptable limits. A quantity o... | 02/08/2000 |
| 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 |
| 5981894 | Metal-enclosed, gas-insulated switchgear assembly A metal-enclosed, gas-insulated switchgear assembly having at least one active part (19) is mounted in an enclosure extended along an axis (18). The active part (19) is provided on at least one side with a contact-making assembly (25). The contact-making ... | 11/09/1999 |
| 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 |
| 5869796 | Contact device A contact device has a pair of flanges which extend inward in the radial direction from both ends of an annular shield, and a plurality of contact pieces which are arrayed in the circumferential direction in a space formed by the shield and the pair of fl... | 02/09/1999 |
| 5834723 | Apparatus for retaining a movable contact in a circuit interrupter An apparatus for retaining a movable contact in a circuit interrupter includes a movable element that is displaced by gas pressure within the interrupter housing resulting from arcs generated during initial displacement of the movable element. The movable... | 11/10/1998 |
| 5821495 | Gas circuit breaker A gas circuit breaker includes a case body in which an insulating gas is enclosed, a stationary contact part accommodated in the case body and equipped with tulip type stationary contact members, and a movable contact part having a movable contact member.... | 10/13/1998 |
| 5770828 | Power circuit-breaker The circuit-breaker has a quenching chamber which is filled with an insulating medium, is of cylindrical design and has a quenching zone extending along a longitudinal axis. In addition, it has a fixed contact arrangement, which is arranged in the course ... | 06/23/1998 |
| 5635692 | Contact arrangement for electrical apparatus A contact arrangement is provided for engaging first and second stationary contacts in a predetermined sequential manner, for example so as to appropriately provide a pre-insertion function via the first contact and prior to engagement of the second conta... | 06/03/1997 |
| 5629506 | Low voltage AC contactor including high recovery voltage gas system An AC contactor having a high recovery voltage strength includes a contact assembly and a high recovery voltage gas system coupled to the contact assembly. The contact assembly includes two contact pads per electrical phase, with one of the contact pads b... | 05/13/1997 |
| 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 |
| 5581063 | Arc-resistant shield for protecting a movable contact carrier of a circuit breaker In an electrical switching device including a stationary contact carrier having a stationary contact mounted thereon, a contact carrier assembly comprises a movable contact carrier and an arc-resistant protective shield. The movable contact carrier has a ... | 12/03/1996 |
| 5495083 | Electric switch device with separable contacts including fixed contact mounted current limiter and shunt conductor An electrical switch device with separable contacts is provided with a shunt conductor adapted to receive one end of the arc that is struck when the contacts separate after it has jumped a dielectric gap. The shunt conductor determines an interim arc curr... | 02/27/1996 |
| 5493091 | High voltage circuit breaker contact structure including ionization slot and secondary arcing features An electromechanical switch of the contactor or circuit-breaker type with adjacent contacts, which are provided on respective mobile and fixed contact parts. This arrangement defines a narrow ionization slot which is maintained at the start of contact ope... | 02/20/1996 |
| 5475193 | Arc quenching chamber including gas generating stationary contact insulation and improved arc runner The low-voltage switch includes a stationary contact (2) and a moving contact (3). The two contacts and an arc splitter stack (6) are arranged in an arc quenching chamber (5). An elongation element (14) is fitted on the stationary contact (2), extends in ... | 12/12/1995 |
| 5464956 | Rotating arc interrupter for loadbreak switch A loadbreak switch is provided that utilizes a pivotally mounted movable jaw contact and a main stationary contact that is positioned in the middle of an arc runner. For operation at voltages 15 kV and above, the switch utilizes a shunt contact that bridg... | 11/07/1995 |
| 5448033 | Circuit breaker stationary contact strap A stationary contact strap for a circuit breaker, with an electrically conductive body portion having a plurality of discrete apertures arrayed in a pattern which define at least two input portions for splitting transient current input into the contact st... | 09/05/1995 |
| 5247418 | Arc suppressing switch An arc suppressing switch having a plurality of discrete conductors operative to allow a flow of electricity between a pair of terminals along each of the plurality of discrete conductors when the switch is closed. The conductors are oriented to distribut... | 09/21/1993 |
| 5233143 | High-power gas switch with hydride electrodes A high-power, high-repetition-rate spark gap switch having metal-hydride electrodes is provided The spark gap switch is configured with a trigger and two electrodes fabricated with metal hydrides. The hydride metals may be selected from a variety of alloy... | 08/03/1993 |
