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| Number | Title | Issue Date |
| 7812276 | Electrical switching apparatus, and arc chute and arc member therefor An arc member is provided for an electrical switching apparatus. The electrical switching apparatus includes an operating mechanism for opening and closing separable contacts, and an arc chute disposed proximate the separable contacts to attract an arc generated the... | 10/12/2010 |
| 7723634 | Contactor assembly with arc steering system A contactor assembly includes a stationary contact, an arc contact, an arc arrestor, and a magnetic intensifier. The magnetic intensifier is constructed to extend in generally close proximity to one of the stationary contact and the arc contact. During communication... | 05/25/2010 |
| 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 |
| 7064640 | Low voltage circuit breaker The invention relates to a low voltage circuit breaker which comprises a contact system for a principal current and an arc extinction chamber. An are transmitting element is disposed between the contact system for the principal current and the arc extinction chamber... | 06/20/2006 |
| 6809282 | D.C. circuit breaker with magnets for reducing contact arcing An electromagnetic circuit breaker is provided with a pair of magnets on opposing sides of the contacts in the open position. A magnetic field generated by the magnets combines with the magnetic field generated by the electrical arc created upon opening of the conta... | 10/26/2004 |
| 6417474 | Electrical switching apparatus having an arc runner with an elongated raised ridge A circuit breaker includes a load terminal and a line terminal; a pair of main contacts; a separable pair of arcing contacts; and a moving conductor assembly having a contact carrier mounted for movement between an open position and a closed position to o... | 07/09/2002 |
| 6320149 | Current contact system for a current switch A moving first electrical contact arrangement (K1) has a switching contact (P4) and a U-shaped arcing horn (R1) on the end face. A stationary second electrical contact arrangement (K2) has a switching contact (P1) and a U-shaped electrical conductor loop ... | 11/20/2001 |
| 6300586 | Arc runner retaining feature An arc runner is fixedly retained on a load (or line) strap without hardware and without employing a mechanical operation. Either the arc runner or the strap has features, such as legs or holes, which engage notches or pins on either the strap or the arc ... | 10/09/2001 |
| 6288621 | Pole for an electrical circuit breaker, equipped with a wide arc extinguishing chamber An electrical circuit breaker pole comprises an arc extinguishing chamber with two side flanges, a rear wall, separators, a front opening, a lower arcing horn electrically connected to the stationary contact and an upper arcing horn. The rear part of the ... | 09/11/2001 |
| 5877467 | Circuit breaker current limiting arc runner A circuit breaker is equipped with a current limiting arc runner for effective overcurrent interruption without additional heating under quiescent operating conditions. Upon contact separation, an arc is drawn with the endpoints of the arc being initially... | 03/02/1999 |
| 5844187 | Single piece arcing contact for a circuit breaker A circuit breaker having a movable load contact arm (14'), which pivots between an open position and a closed position, and a stationary line contact arm (16'). The circuit breaker includes an arcing contact structure (210) which is pivotally mounted on t... | 12/01/1998 |
| 5770827 | Circuit breaker magnetic blowout arc extinguishing device with arc runner features There is provided an acr extinguishing device of a circuit breaker which closes and opens an electric line, one of two contact parts being fixed to a base part. The arc extinguishing device includes an arc runner formed of an electrically conductive membe... | 06/23/1998 |
| 5744772 | Molded case circuit breaker with arc suppressant features including magnetically permeable arc horn mounted on the contact arm An electromagnetic circuit breaker is provided with a copper plated arc horn on the top side of the movable contact arm opposite the movable contact. The horn extends beyond the movable contact and has an upturned sweep so as to enhance migration of the e... | 04/28/1998 |
| 5686712 | Electrical contact assembly An electrical contact assembly including a pair of first contact arms, each having a terminal end portion, a tip end portion and first contacts fixed to said tip end portions, and a second contact arm arranged opposite the first contact arms and having a ... | 11/11/1997 |
| 5608198 | Circuit breaker arrangement for protection against electrical arcs An arrangement in an electrical switching device for protection against electrical arcs comprises a tripping mechanism, a stationary contact carrier, a movable contact carrier, an exhaust vent, an arc runner, and an arc extinguishing barrier. The stationa... | 03/04/1997 |
| 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 |
| 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 |
| 5136451 | Current limiter A fault current limiter in which a resistor is inserted by a running arc. The arc is allowed to burn in a commutating unit until the current zero-crossing. Upon the passage through zero the arc is extinguished and the current is commutated to a shunt resi... | 08/04/1992 |
| 5097104 | Contact arrangement for an electrical switching device especially for a contactor A contact arrangement provided for an electrical switching device, particularly for a contactor or protective relay, includes a stationary contact element and a movable contact element. The stationary contact element essentially consists of an elongated c... | 03/17/1992 |
| 5075520 | Contact member for electrical switching devices A contact member for electrical switching devices, in particular contactors, having a linear power supply conductor and an arc runner disposed at a distance from the contact face of the linear power supply conductor. The arc runner has a U-shaped design h... | 12/24/1991 |
| 4973805 | Arc runner, containment support assembly Briefly, the present invention relates to a molded case circuit breaker. The molded case circuit breaker includes at least one pair of separable main contacts, mounted on upper and lower contact arms. One end of the lower contact arm is formed as a U-shap... | 11/27/1990 |
| 4885441 | Circuit Breaker A circuit breaker with arc-extinguishing structure comprises a protrusion (5b) formed on an arc running surface (5a) of arc-runner (5) for smoothly moving an arc, and thus the arc is quickly extinguished.... | 12/05/1989 |
| 4847455 | Electric switching device The switching device has a fixed contact which cooperates with a movable contact secured to a movable contact carrier. The contacts are connected to runner rails for the arc that is created upon the contact opening. The runner rail connected to the movabl... | 07/11/1989 |
| 4845460 | Multipole low-voltage circuit breaker with an insulating material housing and arc-quenching chambers A multipole low-voltage circuit breaker with an insulating material housing and arc quenching chambers. By a new mechanical design, the installation of the arc quenching devices is to be facilitated. All arc quenching chambers of a switchgear are arranged... | 07/04/1989 |
| 4771140 | Circuit interrupter A circuit interrupter comprising a stationary contact assembly having a stationary contact element securely attached to a stationary conductor, and a movable contact assembly having a movable contact element secured on a movable contact arm and operable i... | 09/13/1988 |
| 4766273 | High current double-break electrical contactor Stationary contact, terminal and arc-runner structure for a high-current double-break electrical contactor that affords longer contact life. Each stationary contact (66,80) and turn-back arc-runner (68,82) is connected to the associated terminal (52,72). ... | 08/23/1988 |
| 4757167 | Trident arc horn for circuit breaker A circuit breaker having a contact assembly with a double pivot arrangement. The moving arcing and main contacts provide a smooth surface for meeting the lower arcing contact and the lower main contacts, each mounted on a separate semi-stationary lower bl... | 07/12/1988 |
| 4737606 | Circuit breaker arc stack assembly A circuit breaker having an arc stack assembly that provides a longer arcing path resulting in decreased restriking characteristics during an interrupt cycle. The arc stack assembly has approximately parallel metal arc plates mounted in insulating sides. ... | 04/12/1988 |
| 4689588 | Circuit breaker In a circuit breaker which has an arc runner (2) fixed on a curved fixed conductor (1), an upright part (11b) is formed in extended part of the fixing part (2B) of the arc runner (2); and the upright part (11b) works to retain the arc to prevent from exce... | 08/25/1987 |
| 4672157 | Low voltage circuit breaker with improved breaking A moulded case low voltage circuit breaker for high currents has no arcing contacts and is equipped with arc blow-out means drawing the arc very quickly away from the contacts. An insulating shield associated with the moving contact forms an arc formation... | 06/09/1987 |
| 4656446 | Current limiting circuit breaker with series double break contact system per pole A current limiting circuit breaker characterized by pairs of stationary and movable contacts with the movable contacts connected in series; an arc-extinguishing chamber including arc guide rails associated with each pair of contacts and in side-by-side re... | 04/07/1987 |
| 4652707 | Power switch A power switch includes a fixed contact member 13 to which a fixed contact 14 is joined, a movable contact member 5 to which there is joined a movable contact 6 movable into and out of contact with the fixed contact 14 of the fixed contact member 13, a co... | 03/24/1987 |
| 4642428 | Circuit interrupter A circuit interrupter comprising a stationary conductor carrying a stationary contact, a movable contact arm carrying thereon a movable contact which, when in the open position, defines an arcing region together with the stationary contact, an operating m... | 02/10/1987 |
| 4618748 | Switching device for electrical switching apparatus A switching device is provided for electrical switchgear, particularly contactors. The switching device includes a step-shaped, bowed current lead with a contact portion cooperating with a contact portion of a switch bridge. The switching device also incl... | 10/21/1986 |
| 4612427 | Switch This invention aims at the reduction of stationary contact element wear and at realizing a significant improvement in the interrupting capability by providing a stationary contact having a hollow cut-out portion formed therein in the vicinity of the porti... | 09/16/1986 |
| 4521655 | Electric power switch with slotted commutation end plate In an electric power switch in which an arc generated between movable and stationary contacts 6, 14 migrates to an arc runner 15 and a commutation end plate and is extinguished by a grid 2 arranged therebetween, a cut is formed at least in the lower half ... | 06/04/1985 |
| 4477704 | Power switching device A power switching device including a fixed contact, a movable contact, an arc runner for transferring a leg of an electric arc to the outside of the fixed contact, a U-shaped fixed contactor electrically connected to the fixed contact, and a deionizing gr... | 10/16/1984 |
| 4453053 | Circuit breaker with arc restricting device The present invention relates to a circuit breaker comprising a pair of contactors each comprising a rigid conductor with a contact secured thereon, wherein at least one of the contactors is also provided with an electrically conductive projection secured... | 06/05/1984 |
| 4450328 | Electromagnetic contactor means with improved arc runner An electromagnetic contact having a fixed and a moveable contact which are brought into and out of disengagement by operation of an electromagnet. An arc runner substantially surrounding the contacts aide in extinguishing the arc created upon separation o... | 05/22/1984 |
