| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 218146000 | Contact structure | 29 |
| 20080237191 | ELECTRICAL SWITCHING APPARATUS, AND ACCESSORY MODULE AND STRAIN RELIEF MECHANISM THEREFOR - A strain relief mechanism is provided for an accessory for an electrical switching apparatus, such as a circuit breaker. The accessory includes an enclosure having a first end with an aperture, a second end disposed opposite and distal from the first end, and a number of electrical conductors, such as wires, extending through the aperture and outwardly from the first end of the accessory enclosure. The strain relief mechanism includes a support extending outwardly from the first end of the enclosure, and being proximate the aperture and the number of electrical conductors extending therethrough. A fastening mechanism, such as a wire tie, wraps around the electrical conductors and the support in order to secure the number of electrical conductors to the support and resist undesired movement thereof. First and second portions of the enclosure are fastened together without a plurality of separate fasteners. | 10-02-2008 |
| 20080237192 | ELECTRICAL SWITCHING APPARATUS AND ACCESSORY TRAY THEREFOR - An accessory tray is provided for an electrical switching apparatus, such as a circuit breaker, including a housing, an operating mechanism, and a number of accessories. The housing has a cavity with a first end and the second end, and is disposed beneath the operating mechanism. The accessory tray includes an elongated member including first and second ends and is structured to receive the circuit breaker accessories. A guide mechanism guides the elongated member into and out of the cavity, in order to install the circuit breaker accessories beneath the operating mechanism. When the elongated member is disposed within the cavity, the first end is disposed at or about the cavity first end and the second end is disposed at or about the cavity second end. The accessory tray may be a single-piece molded member having a plurality of mounting portions for removably securing a plurality of circuit breaker accessories. | 10-02-2008 |
| 20080237193 | ELECTRICAL SWITCHING APPARATUS, AND ACCESSORY MODULE AND ELECTRICAL CONDUCTOR MOUNT THEREFOR - An electrical conductor mount is provided for an accessory including a number of electrical conductors and an actuator. The electrical conductor mount includes an accessory enclosure from which or to which the electrical conductors extend. A mounting element is disposed on the enclosure proximate the electrical conductors external to the accessory enclosure. The mounting element includes a receiving portion structured to receive the electrical conductors, and a retaining portion retains the electrical conductors within the receiving portion. The mounting element mounts the electrical conductors in a position in which they do not obstruct operation of the actuator. The mounting element may be a resilient hook including a first end disposed on the enclosure of an accessory module. The retaining portion may be a hook disposed on the second end of the resilient hook. | 10-02-2008 |
| 20100044345 | 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 M | 02-25-2010 |
| 20100155371 | SHORT-CIRCUIT DEVICE FOR MEDIUM AND HIGH-VOLTAGE SWITCHING DEVICES - A short-circuit device is provided for medium and high-voltage switching devices, in which at least one moving contact is moved onto a fixed contact by means of a propelling charge. Two contact arrangements are provided in series to provide a higher dielectric strength. Each of the contact arrangements includes a fixed contact and a moving contact. A first fixed contact of a first one of the contact arrangements contains a mechanical ignition device for providing a propelling charge to a moving contact of the second one of the contact arrangements, such that when the moving contact reaches the fixed contact of the first contact arrangement, the propelling charge is mechanically ignited to cause the moving contact of the second contact arrangement to be propelled toward the fixed contact of the second contact arrangement. | 06-24-2010 |
| 20110084048 | CIRCUIT BREAKER WITH PARALLEL RATED CURRENT PATHS - A circuit breaker is provided which can be filled with a quenching gas and which has two contact arrangements, which can be moved relative to one another and along a longitudinal axis of the circuit breaker. The contact arrangements form a arcing contact system and a rated current contact system connected electrically in parallel with it. One of the contact arrangements includes inner rated current contacts and outer rated current contacts of the rated current contact system, where the inner rated current contacts overhang the outer rated current contacts in the direction of the longitudinal axis, and the outer rated current contacts coaxially surround the inner rated current contacts. The circuit breaker has a high current carrying capability as well as a reliable switching-on and -off behavior, such as during and after the occurrence of a short-circuit current in the circuit breaker. | 04-14-2011 |
| 20110180514 | GAS INSULATED SWITCHGEAR - A gas insulated switchgear includes stationary contacts, movable contacts contactable with or uncontactable from the stationary contacts, an insulation case housing the stationary contacts and the movable contacts so as to support the same, the insulation case having a shape of a pipe, flanges disposed at an inner circumferential surface of the insulation case in a circumferential direction, each of the flanges having an annular shape, and a collection groove portion formed at the flanges and collecting metal particles generated during contact or separation operation between the stationary contactors and the movable contactors. Under this configuration, the metal particles can be collected and laid in the collection groove portion provided at the flanges, accordingly, the metal particles cannot be stuck on an insulation member or other components of the insulation case, resulting in obviating occurrence of insulation breakdown within the switchgear and improving reliability of a product. | 07-28-2011 |
| 20110247997 | METHOD FOR PRODUCING CONTACT MAKERS FOR VACUUM SWITCHING CHAMBERS - The invention relates to a method for producing contact makers for vacuum switching chambers, which are used in low-voltage, medium-high voltage, and high-voltage engineering, during which the contact makers are provided with slots extending from the middle area of the contact to the edge. The invention also relates to the contact maker itself. In order to improve a method for producing contact makers in vacuum switching chambers as well as a contact maker of the type in question so that the production method is distinctly less complicated, and the contact maker is sufficient for the highest functional demands, the invention provides that the contact makers are produced in a powder metallurgical process in which they are provided with near final contours and near final dimensions. During this process, said slots are already made in the green compact and are fixed during a subsequent sintering. | 10-13-2011 |
| 20120261385 | GAS CIRCUIT BREAKER - A gas circuit breaker is provided, avoiding change in the position of a cover member and without weakening of the blow of gas to the arc in an arc discharge cavity even when a surface of the cover member in contact with the arc discharge cavity is damaged. The gas circuit breaker includes a contact ring, a holder attached to the contact ring, and extending to a path of arc-extinguishing gas that extinguishes an arc, and an electrically insulative cover member attached to the holder. | 10-18-2012 |
| 20120312785 | CONTACT PIECE FOR A VACUUM INTERRUPTER CHAMBER - The disclosure relates to a method for producing a contact piece, for use in a vacuum interrupter chamber, especially in a low, medium or high voltage vacuum interrupter chamber. The aim of the disclosure is to improve multi-layer contact systems in such a manner that even larger layer thicknesses can be used to improve the electrical properties. For this purpose, the contact piece is comprised of at least two layers of powder-metallurgical pressed green compacts with a solder film inserted thereinbetween, the layers being soldered together in a soldering furnace in a desired relative position to each other at the same time the layers are sintered. | 12-13-2012 |
| 20130008873 | ELECTRICAL HIGH-VOLTAGE ON-LOAD DISCONNECTOR AND METHOD FOR OPENING THE SAME - A high-voltage disconnector includes first and second contact elements movable along a disconnecting axis with first and second latching elements fixed thereto, respectively, a drive system for moving the first contact element in an opening direction along the axis to open the disconnector, and a restoring system for restoring the second contact element counter to the opening direction. With the disconnector closed, the first and second latching elements are arranged in a latched connection with one another. During an initial phase of the movement of the first contact element in the opening direction the latched connection initially remains, and the second contact element is carried along by the first contact element in the opening direction. During a disconnecting phase, the latched connection is released, the second element is restored by the restoring system counter to the opening direction, and the second contact element is disconnected from the first contact element. | 01-10-2013 |
| 20130193110 | CONTACT ARRANGEMENT FOR HIGH-POWER ELECTRICAL SWITCHING - In a contact arrangement for high-power electrical switching devices having at least two circular contact piece pairs in a convex/flat or convex/convex contact piece pair of contact pieces directly connected in parallel, mechanically and electrically in a circuit. A central recess, the largest diameter of which is approximately ⅕ of the contact diameter of a contact piece, is provided in the contact surface of at least one contact piece partner of a contact piece pair. In a convex/concave or flat/concave contact piece pair of contact pieces, however, a positive projection is arranged within the centre of the concave contact surface of a contact piece partner, the largest diameter of which is approximately ⅕ of the contact diameter of the contact piece. | 08-01-2013 |
| 20140097154 | SWITCH - A movable contact for a rotary switch is provided. The movable contact includes first and second contacts for contacting a stationary contact, where the first and second contacts are arranged at a distance from each other for receiving the stationary contact between the first and second contacts. The first contact is a straight contact blade for contacting stationary contacts at both ends of the blade. The second contact is a spring element configured to bend when the stationary contact is placed between the first contact and the second contact, and to cause a pressing force to the stationary contact to press the stationary contact against the first contact after the stationary contact has been placed between the first contact and the second contact. | 04-10-2014 |
| 20140360984 | GAS INSULATED SWITCHGEAR - Compact lightweight gas insulated switchgear which assures sufficient electrode fixing strength equivalent to the fixing strength given by brazing and is structurally simple and enables efficient arc rotation with low operating energy. In the switchgear, a movable arcing contact is located on a movable element, opposite to a fixed arcing contact and electrically connected to, or disconnected from, the fixed arcing contact as the movable element moves. The movable arcing contact includes, in order from its tip opposite to the fixed arcing contact, a first electrode as a convex hollow coaxial cylindrical electrode, hollow coaxial cylindrical first spacer, and second electrode as a hollow coaxial cylindrical electrode and has electric conduction means to connect the first and second electrodes electrically through the first spacer. The first and second electrodes are fixed through the first spacer by a fixing member having higher resistivity than the first and second electrodes. | 12-11-2014 |
| 20150034599 | HIGH VOLTAGE INTERRUPTER UNIT WITH IMPROVED MECHANICAL ENDURANCE - A high voltage interrupter unit includes a switching chamber within which at least two electric contact elements of a contact system are arranged to be moved relative to one another. The contact system includes at least one mechanical element which is at least in part not in fixed mechanical connection with either of the two contact elements. In order to increase the mechanical endurance of the contact system, the at least one mechanical element is sheathed at least in part in a layer of a synthetic, abrasion resistant material. | 02-05-2015 |
| 20150041438 | ELECTRIC CURRENT SWITCHING APPARATUS - An electric switch is disclosed which includes a housing module housing a movable contact and a stationary contact having a contact portion to be contacted by the movable contact . The stationary contact can include a mounting portion, which mounting portion can be positioned closer to the centre of the housing module than the contact portion of the stationary contact. | 02-12-2015 |
| 20150048054 | ELECTRICAL CONTACT SYSTEM - A system including a contact tip that includes an arcing surface, a base surface, and a graded structure is presented. The graded structure includes a first region comprising a first surface proximate to the arcing surface, a second region comprising a second surface proximate to the base surface, and an intermediate region disposed between the first region and the second region. A concentration of silver in the graded structure decreases from the first surface to the second surface. A method of forming a contact tip includes preparing starting materials for a first region, an intermediate region, and a second region of the contact tip. The starting materials of the first, intermediate, and second regions are sequentially added to a container to form a graded blend of starting materials. The graded blend of starting materials are compacted and heat-treated to form a contact tip having a graded structure. | 02-19-2015 |
| 20150069020 | Contact Materials for High Voltage Direct Current Systems - A contact element for high voltage direct current switches includes a matrix made of a first material selected from the group comprising copper, silver, palladium, platinum, tungsten, molybdenum, rhenium, nickel, gold, and alloys thereof. The contact element also includes a foreign phase, which is dispersed in the matrix and is made of a second material selected from the group comprising carbon, tin(II) oxide, tin(IV) oxide, zinc(II) oxide, tungsten, nickel and mixtures thereof. The contact element has a porosity of ≦1.0% by volume, based on a total volume of the contact element. | 03-12-2015 |
| 20150090695 | ELECTRIC CURRENT SWITCHING APPARATUS - An exemplary movable contact for an electric switch having a first contact blade and a second contact blade. Each of the first contact blade and the second contact blade includes an assembly hole. The movable contact having an assembly pin wherein the assembly pin includes a separation portion having a diameter greater than the assembly holes of the first and second contact blades thereby keeping the first and second contact blades separated from each other. The assembly pin includes a contact blade portion on each side of the separation portion for insertion to the assembly holes of the contact blades. | 04-02-2015 |
| 20150340179 | CURRENT CONNECTION AND/OR CUT-OFF DEVICE COMPRISING PERMANENT CONTACTS WITH REDUCED WEAR - Device for making and/or breaking a current including a pair of permanent contacts ( | 11-26-2015 |
| 20150364280 | Switching Method and Switching Device - A switching device has a first contact side with a first nominal current contact piece and a first electric arc contact piece, and a second contact side with a second electric arc contact piece and a second nominal current contact piece. In order to generate a relative movement between the first and second contact sides, the first electric arc contact piece and the first nominal current contact piece as well as the second electric arc contact piece and the second nominal current contact piece are driven. For switching, the first contact piece is moved by a movement profile and the first nominal current contact piece is moved by a movement profile that differs from the movement profile of the first electric arc contact piece. A movement profile of the second electric arc contact piece and the second nominal current contact piece deviate from each other. | 12-17-2015 |
| 20150371796 | Switching Device Arrangement - A switching device arrangement has a first contact set and a second contact set. The first contact set includes a first electric arc contact element and a first nominal current contact element. The first nominal current contact element can be moved relative to the first electric arc contact element. A first transmission is introduced in a kinematic chain in order to generate a relative movement of the first nominal current contact element and the first electric arc contact element. The first transmission is operationally connected between a stationary counter bearing and the first electric arc contact piece. | 12-24-2015 |
| 20160071673 | Switch Contact Chamber Seal - An electrical switch element is disclosed. The electrical switch element includes a housing having a switch chamber, an opening to the switch chamber, electrical switch contacts arranged in the switch chamber, and at least one positive-locking counter-element extending at least partially around the opening. The electrical switch element also includes a cover having at least one positive-locking element engaging the at least one positive-locking counter-element, the cover extending over the opening. | 03-10-2016 |
| 20160133401 | SWITCH DEVICE - A switch device may have a restriction member provided between a support portion and a fixed contact point portion of a polar board for restricting movement of a movable piece to the polar board. The restriction member may have a set height from the polar board such that the restriction member abuts on the movable where the fixed contact point reaches a predetermined height from the polar board due to wear. The movable piece may be supported by the support portion to be displaceable in the longitudinal direction such that when one side of the movable piece makes contact with the first fixed contact point, in a case where the restriction member makes contact with the movable piece, the movable piece may be displaced in the longitudinal direction on a basis of the contact position with the restriction member to be disconnected from the first fixed contact point. | 05-12-2016 |
| 20160379765 | CONTACT PIN AND PIPE CONTACT, AND METHOD FOR PRODUCTION - A contact pin for a high-voltage and/or medium-voltage switch includes a contact tip of arc-erosion resistant material, a tubular support sleeve connected to the contact tip and a support core in the sleeve. The contact tip is in a forward region of the contact pin where arcs arise during use. The sleeve is in a rearward region of the contact pin, adjoining the forward region, where no arcs arise during use. A pipe contact includes an arc-erosion resistant annular contact and a support pipe connected to the annular contact. The annular contact is in a forward region of the pipe contact where arcs arise during use, and the support pipe is in a rearward region of the pipe contact, adjoining the forward region, where no arcs arise during use. Methods for producing a contact pin and a pipe contact are also provided. | 12-29-2016 |
| 218147000 | Arc shielding means | 4 |
| 20090090698 | GASSING INSULATOR ASSEMBLY, AND CONDUCTOR ASSEMBLY AND ELECTRICAL SWITCHING APPARATUS EMPLOYING THE SAME - A gassing insulator assembly for a line conductor assembly of an electrical switching apparatus is provided having a line conductor and first and second gassing insulator members. The insulator members are constructed from a gassing material. The first gassing insulator member is disposed near a first end of the line conductor and the second gassing insulator member is generally disposed between the line conductor and a cantilevered arc runner near a second end of the line conductor. | 04-09-2009 |
| 20110073568 | Shield Apparatus for Circuit Breaker - An improved circuit breaker having an improved shield apparatus provides protection to components that are internal to the circuit breaker during an arc event. A contact arm carrier assembly of the circuit breaker comprises a number of springs that bias a number of movable contacts that are disposed on contact arms into engagement and electrical connection with a stationary contact. The shield apparatus is disposed on a carrier housing of the contact arm carrier assembly and is situated adjacent the springs. A shield member of the shield apparatus is biased into engagement with the contact arms. When the circuit breaker is moved between the ON position and the OFF or TRIPPED positions, the shield of the shield apparatus moves between a retracted position and a deployed position, with the shield remaining in engagement with the contact arms and protecting the springs from damage in an arc event. In one embodiment, the shield member is formed of a material that generates gases when struck by an arc. | 03-31-2011 |
| 20140103013 | CIRCUIT BREAKER WITH TRANSLATING ELECTRICAL CONTACT, CIRCUIT BREAKER ELECTRICAL CONTACT ASSEMBLIES, AND OPERATIONAL METHODS - Circuit breakers having an electrical contact assembly with a moving electrical contact that is linearly translatable within an inner cavity are disclosed. A guide linearly carries a moveable contact assembly having the moving electrical contact and the guide has one or more guide supports accessible by a drive member external to the cavity. According to another aspect, a circuit breaker electrical contact assembly and method of operating a circuit breaker is provided, as are other aspects. | 04-17-2014 |
| 20150041439 | MULTI-INSTRUCTION SWITCH FOR ENHANCING ELECTRICAL INSULATION - A multi-instruction switch for enhancing electrical insulation is provided. The multi-instruction switch includes a housing, a common pin and a switching pin set. The housing comprises an accommodating space which includes a conductive elastic plate moving back-and-forth and a support rack therein. The conductive elastic plate includes a normal connection section and a switching connection section. The support rack includes a limiting track. The common pin is normally in electrical contact with the normal connection section in the housing. The switching pin set includes a first pin having a contact section and a second pin having a trigger section. The limiting track includes a first insulation plate, a second insulation plate, and an insulation space between the first and second insulation plates. As such, the present invention enhances the insulation effect by the first and second insulation plates and the insulation space located at the limiting track. | 02-12-2015 |
