Class 218/147 - Arc shielding means

Subclass of Class 218 - High-voltage switches with arc preventing or extinguishing devices
Definition: Subject matter including means surrounding the contacts
No. of patents: 36
Last issue date: 05/22/2012

Number	Title	Issue Date
8183490	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 ...	05/22/2012
8119947	Pivoting barrier for contact arm protection A circuit breaker includes a pivoting arc barrier that is interposed between the moving contact arm axis of motion and the moving contact, so that arc gasses are deflected away from the contact arm structure. The pivoting arc barrier pivots in a complimentary motion...	02/21/2012
7863537	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 insul...	01/04/2011
7081596	Arc-quenching device for circuit breakers having double-break contacts The present invention relates to an arc-quenching device for circuit breakers having double-break contacts for use in low-voltage distribution systems. Provided around a prechamber (41) is a magnetic shield (91) for the purpose of intensifying the magn...	07/25/2006
7034241	Efficient venting means for a circuit breaker An arrangement for reducing pressure inside a circuit breaker caused by gas produced during an electrical interruption event, including a base, an interrupter assembly, and a trip unit base. A structure having a surface is positioned in the base at an angle relative...	04/25/2006
7034642	Blow open moving contact assembly for electric power switching apparatus with a very high current interruption rating A moving contact assembly for a high-current interruption electric power switching apparatus has an inner carrier for the contact fingers that is rigidly held in a withstand position in an outer carrier by a spring biased cam follower pin engaging a cam profile on t...	04/25/2006
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
6630640	Electrical switch An electrical switch for electrical tools having an electric motor operated by a DC voltage. The switch comprises a contact system including a stationary contact and a switching contact, an operating element which acts on the switching contact to initiate...	10/07/2003
6344629	Apparatus for assembling vehicle body On a setting cart which is movable back and forth between a setting station and a vehicle body assembly station, there are provided floor panel setting members, side sill receiving members and side panel forcing members which force side panels toward a fl...	02/05/2002
6025568	Electric switch An electric switch (1), in particular for electric hand tools having an electric motor operated by means of direct current. The switch (1) possesses a contact system (9) consisting of a fixed contact (10) and of a switching contact (11), an actuating memb...	02/15/2000
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
5723841	Circuit breaker having arc gas suppressing barrier on a movable contact A distribution circuit breaker for two circuits operated by a common handle, in which an arc gas generated in one circuit is prevented from flowing into the other circuit includes a breaking mechanism chamber (A) for a first circuit and another breaking m...	03/03/1998
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
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
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
5073764	Current limiting apparatus In a twin-contact type current limiting apparatus in which two contacts are electrically connected in series with each other, each of movable contact arms (23a, 23b) is extended in substantially parallel with and along each of stationary contact arms (21a...	12/17/1991
4926016	Moving contact blade barrier A single piece contact barrier for separating and maintaining the spacing of the contact blades in a circuit breaker. The barrier is also adapted to form an insulating barrier between the contact blades and produce an arc quenching vapor. Under certain ci...	05/15/1990
4727345	Contact arrangement for low voltage circuit breaker with a flexible current lead A contact arrangement for a low-voltage circuit breaker comprises a pivotally mounted holder for two or more contact levers which are connected by flexible current leads to a fixed connecting device or connecting bar. Between the current leads, a spacer i...	02/23/1988
4716265	Circuit breaker with arc shielded contact arm To prevent a separation arc from migrating along the movable contact arm 12 of a circuit breaker and welding its biasing spring 14, the arm is protected by an insulating shield 22 underlying its lower face, flanking its sides, and having outwardly extendi...	12/29/1987
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
4677260	Cam operated switch A rotatable cam operated switch having a cam whose peripheral surface constitutes a cam surface. A guide groove is formed along the entire periphery of the cam surface. A first contact plate closer to the cam and a second contact plate farther from the ca...	06/30/1987
4651024	Electromagnetically actuated high DC current switch A high DC current switch includes a pair of annular, conductive rails with a pair of brushes mounted for rotary movement therebetween. DC current is conducted by the rails to and from the brushes in directions to electromotively accelerate the brushes int...	03/17/1987
4628392	Explosion proof electrical connector system with quick power disconnect An electrical connector system, particularly one that connects armored electrical cables for oil wells through an upper surface connector that is mated to a feed-through mandrel, automatically operates a circuit breaker in the main power circuit as the up...	12/09/1986
4616112	Electrical switch having arc-protected contacts An electrical switch comprises a dielectric base member having parallel stationary contact assemblies provided with aligned contact segments, each of the contact segments including an exposed contact section and a dielectric section. A spring-biased movab...	10/07/1986
4551701	Thermally actuated switching device A thermally actuated switching device is disclosed that comprises a fixed contact placed on a proper member, a thermally actuated member such as a bimetallic member in the center of which is formed of a thin dish shape which contributes to a snap-action c...	11/05/1985
4476361	Disconnect contact assembly According to the reciprocal movement of a movable arm, a stationary arm is connected or disconnected to fingers mounted to the movable arm. A metal ring electrically connected to the stationary arm and coated on the front end with an insulator coating sur...	10/09/1984
4464642	Circuit breaker The present invention consists in a circuit breaker wherein a pair of rigid conductors which are disposed therein and at least one of which has a movable portion that separates a pair of contacts on the basis of the electromagnetic force of an excess curr...	08/07/1984
4451718	Circuit breaker The present invention combines the provision of arc shields surrounding the contacts of a circuit breaker with a magnetic driving means to raise the arc voltage of an arc drawn across the contacts and to effectively drive the arc, whereby the performance ...	05/29/1984
4403125	Gas-insulated disconnecting switch An insulating gas-filled disconnecting switch comprises a metallic container filled hermetically with an insulation gas, and a movable electrode and a stationary electrode disposed within the metallic container and electrically insulated from the latter. ...	09/06/1983
4249049	High voltage plain break circuit interrupter An improved circuit interrupter for high voltage and low current provides reactor and capacitor switching functions with fewer serial interrupters. Improved electrical field configuration is provided by moving and stationary contact shields, surrounding t...	02/03/1981
4249050	Vacuum switch A vacuum switch having a vacuum vessel and a pair of separable contacts disposed in the vessel comprises a pair of opposing shields surrounding the contacts respectively in the vacuum vessel, and the shields have reentrant portions in which the contacts a...	02/03/1981
4168405	Electrical reversing switch The switch comprises two contactors movable along two rows of four contacts, to an "OFF" position in which each contactor bridges the second and third contacts in each row, a first "ON" position in which each contactor bridges the first and third contacts...	09/18/1979
4104497	Disconnect contact assembly for metal-clad switchgear and the like This disconnect contact assembly comprises a tubular insulator projecting forwardly through a grounded metal plate and surrounding the usual bridging contact subassembly. A current transformer secondary assembly surrounds the tubular insulator. Two separa...	08/01/1978
4068913	Electrical connector apparatus Apparatus for connecting and disconnecting a male contact element and a high voltage cable includes a housing securable to the cable and defining an axial passage having a cavity, a piston assembly with a female contact element movable in the passage and ...	01/17/1978
4059816	Electrical loadbreak fuse and canister assembly An electrical loadbreak fuse and canister assembly with arc quenching means operative upon withdrawal of the fuse from the canister or upon insertion of the fuse in the canister under either load or fault conditions. The canister, formed of a glass filled...	11/22/1977

PatentStorm

Quotables

PatentStorm News

Class 218/147 - Arc shielding means