Patent application number | Description | Published |
20100134221 | ADD-ON TRIP MODULE FOR MULTI-POLE CIRCUIT BREAKER - An add-on module adapted to be attached to the basic mechanical structure of a multi-pole circuit breaker includes multiple extended terminal plates each of which is adapted to replace one of the input and output terminals for one of the poles, multiple electromechanical transducers each of which is coupled to one of the extended terminal plates for producing a mechanical movement in response to a predetermined magnitude of electrical current in the extended terminal plate to which that transducer is coupled, a mechanical actuator coupled to the electromechanical transducers and to the movable contacts for operating the trip mechanism in response to a predetermined movement of any of the transducers, and a calibration element for adjusting mechanical movement of at least one of said multiple electromechanical transducers so as to control an aspect of trip actuation. | 06-03-2010 |
20100155136 | Circuit Breaker Current Transformer Conductor Location Device For Improved Sensing Accuracy And Assembly - A circuit breaker includes a breaker housing, a transformer housing, and a plurality of conductor locators. The transformer housing is enclosed within the breaker housing and has an opening for receiving a plurality of conductors. The plurality of conductor locators is desirably located adjacent to the transformer housing and is movable between an open position and a closed position. The conductors are generally centered in the opening of the transformer housing when the conductor locators are in the closed position. | 06-24-2010 |
20100164657 | Add-On Trip Module For Multi-Pole Circuit Breaker - An add-on module adapted to be attached to the basic mechanical structure of a multi-pole circuit breaker includes multiple extended terminal plates each of which is adapted to replace one of the input and output terminals for one of the poles, multiple electromechanical transducers each of which is coupled to one of the extended terminal plates for producing a mechanical movement in response to a predetermined magnitude of electrical current in the extended terminal plate to which that transducer is coupled, a mechanical actuator coupled to the electromechanical transducers and to the breaker contacts for operating a trip mechanism in response to a predetermined mechanical movement of any of the transducers, and a mechanical reset arm coupling the reset mechanism to the mechanical actuator for resetting the actuator in response to the resetting of the host circuit breaker. | 07-01-2010 |
20120325632 | MOVEABLE CONTACT CLOSING ENERGY TRANSFER SYSTEM FOR MINIATURE CIRCUIT BREAKERS - An energy transfer system absorbs impact forces and/or energy from a moveable conductive blade directly attached to a moveable contact in a circuit breaker. The energy transfer system includes a rotatable member and a biasing member. The rotatable member has an axis of rotation about which the rotatable member is rotatable between a first position and a second position. The rotatable member further includes a protrusion. The protrusion has an initial curved engagement surface portion, a planar engagement surface portion next to the initial curved engagement surface portion, and a final curved engagement surface portion next to the planar engagement surface portion. The biasing member biases the rotatable member towards the first position. The movable conductive blade impacts the initial curved engagement surface portion to cause the rotatable member to begin to rotate about the axis of rotation such that the moveable conductive blade then contacts the planar engagement surface portion and then the final curved engagement surface portion. | 12-27-2012 |
20130001201 | CONFIGURATION OF AN ARC RUNNER FOR A MINIATURE CIRCUIT BREAKER - An arc runner configured to provide a substantially constant separation between a side surface of a conductive contact carrier and an arc discharge surface of the arc runner during an initial portion of a separation of two contacts. The arc discharge surface is preferably a flat surface oriented perpendicular to an axis of rotation of one contact away from the other. The conductive contact carrier having the side surface is configured to allow the arc runner to repeatedly travel along its side without mechanical interference during repeated openings and closings of the contacts. During the initial portion of the separation of the contacts, an electrical arc generated between the contacts during the separation is desirably transferred off of the contacts to the arc discharge surface after the separation between the contacts exceeds the distance between the side surface and the arc discharge surface. | 01-03-2013 |
20130248335 | FLOATING STATIONARY CONTACT TO CREATE STABLE, LOW RESISTANCE CONTACT JOINTS - A floating contact assembly for use in a circuit breaker includes a contact, a floating member, a bearing element, a jaw member, and a flexible conductor. The floating member includes a joint surface and the contact is electrically connected to a surface of the floating member opposite the joint surface. The bearing element is configured to abut the joint surface of the floating member such that the floating member is configured to rotate about a first axis that passes through the bearing element. The jaw member is configured to electrically connect the floating contact assembly to an external electrical component and the flexible conductor electrically couples the jaw member to the floating member. | 09-26-2013 |
20130328657 | CIRCUIT BREAKER THERMAL LOAD VISUAL GAUGE - A thermal gauge for circuit breaker useful for indicating operating conditions, such as in a miniature circuit breaker, has a thermal transducer thermally connected to the current path of the circuit breaker such that heat transfer causes the transducer to give a visible display of heat, latch engagement, or current draw within the breaker directly through a window in the face of the circuit breaker. | 12-12-2013 |
20140158508 | FLEXIBLE CONDUCTOR (BRAID) BONDED TO LOW MATERIAL COST PLUG ON JAW - A substitute for the traditional single piece fixed contact/jaw member on a line-side of a miniature circuit breaker includes a line-side jaw member (e.g., a clip), a flexible conductor (e.g., braided wire), and a line-side contact. The line-side jaw member uses any springy metal or plastic for the clip function and inside the jaw member is the flexible conductor acting as a conductor (e.g., electrically connecting the circuit breaker to a busbar). The flexible conductor leads to the line-side contact. Such an arrangement can save on conductive metal in a circuit breaker. Additionally, the flexible conductor may provide better and more contact points for conduction. | 06-12-2014 |