Class 218/35 - With vent means

Subclass of Class 218 - High-voltage switches with arc preventing or extinguishing devices
Definition: Subject matter including means to release excess arc gases
No. of patents: 20
Last issue date: 03/20/2012

Number	Title	Issue Date
8138439	Limiter including a number of gas channels and electrical switching apparatus employing the same A limiter includes a housing having a number of gas ports, a number of gas vents and a number of gas channels. Each of the number of gas channels is between a corresponding one of the number of gas ports and a corresponding one of the number of gas vents. The limite...	03/20/2012
7348514	Slot motor and circuit breaker including the same A circuit breaker includes fixed and movable contacts, an operating mechanism including a movable arm carrying the movable contact, an arc chute including a plurality of spaced apart first and second arc plates, and a slot motor. A slot motor structure is disposed a...	03/25/2008
7202436	Secondary arc chute and electrical switching apparatus incorporating same A secondary arc chute is for an electrical switching apparatus including a housing, a pair of separable contacts enclosed within the housing, and a primary arc chute disposed proximate the separable contacts in order to attract an arc generated by the separable cont...	04/10/2007
7009132	Terminal assembly for vented circuit breaker and circuit breaker incorporating same A circuit breaker vents at least some of the arc gases generated during current interruption from an internal cavity containing separable contacts through a terminal recess vent in a wall in the housing into an external terminal recess. The line side main conductor ...	03/07/2006
6977354	Arc hood and power distribution system including the same An arc hood includes a housing having a first chamber with two ends, a top and a bottom having an opening, and a smaller second chamber disposed on the top of the first chamber. The smaller second chamber includes two ends, a top and a bottom. Each of the ends of th...	12/20/2005
6960736	Switching gas damper for low-voltage power circuit breakers A switching gas damper for low-voltage power circuit breakers, is arranged as an attachment above the arcing chambers for additional damping, deionization and cooling of the switching gases. The switching gas damper includes a cuboid enclosure with separate inlet op...	11/01/2005
6919785	Pressure sensitive trip mechanism for a rotary breaker A pressure sensitive trip mechanism for actuating a circuit breaker operating mechanism to trip a circuit breaker includes a trip lever and a trip bar. The trip lever is rotatable about a first pivot. The trip bar is positioned proximate the trip lever. The trip bar...	07/19/2005
6784393	Arc quenching device for low-voltage switching devices An arc quenching device for an air-switching low-voltage switching device includes quenching plates, which are arranged between and attached to parallel insulating walls, as well as a cover. A separate cooling device may be introduced into the space between the quen...	08/31/2004
6762389	Gas discharge filter for electrical switching apparatus A gas discharge filter is for cooling ionized gases discharged from a circuit breaker. The circuit breaker includes separable contacts electrically connected in series between line and load terminals, a housing, an arc chamber within the housing structured to exting...	07/13/2004
6703576	Arc chute with valve and electric power switch incorporating same A main valve for an arc chute is formed by a flexible sheet member that is mounted over a gas opening of the arc chamber structure by extensions on arc plates that form guides received in elongated slots in the ends of the flexible sheet member. The force...	03/09/2004
6188036	Bottom vented circuit breaker capable of top down assembly onto equipment A bottom vented circuit breaker capable of top-down assembly onto equipment (10) includes a plurality of breaker cassettes (12) disposed in a base (14) with a cover (16) mounted upon the base (14). Breaker cassettes (12) include breaker connection lugs (1...	02/13/2001
6002313	Molded case circuit breaker with pressure release mechanism A circuit interrupter including an operating mechanism and separable main contacts interconnected with load and line terminals has an interface region between the top and bottom portions of the completed housing thereof, which may be of reduced cross sect...	12/14/1999
5756951	Arc chute having three barriers for the passage of arc gasses An arc chute for a circuit-breaker has a chute member with arc splitters and an end member that seals off the chute member to the top. The end member has three barriers for arc gases, the first and the second barrier have webs with a more or less square c...	05/26/1998
5731561	Power switch with an ARC quenching device A power switch has a pole unit with a switch contact arrangement, an arc quenching device and a flow channel. Switching gases from the arc quenching device are provided into the flow channel and, after cooling, provided to the side of the switch contact a...	03/24/1998
5589672	Circuit breaker with arc quenching device and vent A circuit breaker is formed of a stationary contact member bent back into a U-shape and having a stationary contact at a bent back portion thereof, a moving contact member situated adjacent to the stationary contact member to be able to contact with the s...	12/31/1996
5569894	Circuit breaker arc quenching device with venting structure including flapper valve An arc quenching device for a circuit breaker having a stationary contact member and a moving contact member includes a magnetic element formed of an arc quenching core and a base plate. The arc quenching core includes a back wall, and two side walls exte...	10/29/1996
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
4963849	Compact current limiting circuit breaker A compact circuit breaker utilizing an electronic trip unit for overcurrent determination contains a compact slot motor and a compact arc chute to minimize and control the arc that occurs when the circuit breaker contacts become separated upon intense ove...	10/16/1990
4764650	Molded case circuit breaker with removable arc chutes and disengageable transmission system between the operating mechanism and the poles A sub-assembly comprising a contact finger support cage and a connection pad of each pole is securedly united to an intermediate insulating partition of the case by a bracket and screw fixing device. The cage is pivotally mounted on a spindle positioned i...	08/16/1988
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

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Class 218/35 - With vent means