| Patent Number |
Title Of Patent |
Date Issued |
| 7145089 |
Self retaining sliding bar interlock for circuit breaker |
December 5, 2006 |
| An interlock mechanism for preventing a first circuit breaker having a first actuating mechanism and a second circuit breaker having a second actuating mechanism from simultaneously being in a closed condition. The interlock mechanism includes a frame, a sliding bar slideably mounted |
| 6812423 |
Circuit breaker including lock for operating mechanism linkage |
November 2, 2004 |
| A circuit breaker includes separable contacts, a trip mechanism having an armature mechanism responsive to selected conditions of current flowing through the contacts, and an operating mechanism for opening and closing the contacts. The operating mechanism includes an open position, a cl |
| 6800824 |
Circuit breaker including frame having stop for operating mechanism link |
October 5, 2004 |
| A circuit breaker includes a case, a frame fixedly disposed within the case, separable contacts, and an operating mechanism for opening and closing the separable contacts. The frame includes a tab. The operating mechanism includes an operating handle, a closed position, an open posit |
| 6800823 |
Circuit breaker including lever for snap close operation |
October 5, 2004 |
| A circuit breaker includes a case, separable contacts having a fixed contact and a movable contact, and an operating mechanism for opening and closing the separable contacts. The operating mechanism includes a closed position, an open position, an operating handle for moving the operatin |
| 6667680 |
Circuit breaker |
December 23, 2003 |
| A circuit breaker includes a handle having OFF, ON and intermediate positions, and an extension. A blocking disk has a spring, and first, second and third surfaces. The handle and disk are co-pivotally mounted. The extension engages the third surface for rotation therewith. A pivot l |
| 6614334 |
Circuit breaker including two circuit breaker mechanisms and an operating handle |
September 2, 2003 |
| A circuit breaker includes a housing, line and load terminals, first and second circuit breaker mechanisms, an operating handle having on and off positions, and first and second links from the operating handle to the respective first and second operating mechanisms. Each of the circuit |
| 6452470 |
Circuit interrupter with improved operating mechanism securement |
September 17, 2002 |
| A circuit interrupter including separable main contacts, an operating mechanism interconnected with the contacts, and a housing in which the contacts and the operating mechanism are disposed. The housing includes a cover positioned on top of a base, the cover including first contact |
| 6445274 |
Circuit interrupter with thermal trip adjustability |
September 3, 2002 |
| A circuit interrupter including a housing, separable main contacts within the housing, and an operating mechanism within the housing and interconnected with the separable main contacts. A trip mechanism is disposed within the housing that includes a trip bar assembly rotatable about |
| 6437671 |
Circuit interrupter with secure base and terminal connection |
August 20, 2002 |
| A circuit interrupter including a housing including an abutment wall, separable main contacts within the housing, and an operating mechanism within the housing and interconnected with the contacts. A terminal is at least partially disposed within the housing. A locking plate is posit |
| 6366187 |
Support and alignment structure for magnetic trip device |
April 2, 2002 |
| A plunger assembly support structure for a molded case circuit breaker magnetic trip mechanism for aligning a trip mechanism plunger assembly. The plunger assembly support structure includes a base member assembly having a plurality of guide members, and a plunger carriage assembly s |
| 6323748 |
Circuit interrupter with improved handle |
November 27, 2001 |
| A circuit interrupter including a housing, separable main contacts disposed in the housing, and an operating mechanism disposed in the housing and interconnected with the contacts. The operating mechanism includes a handle having a base into which is formed a channel. The base includes a |
| 6259342 |
Circuit interrupter with improved welded contact interlock |
July 10, 2001 |
| A circuit interrupter including a housing, separable main contacts disposed in the housing and rotatable between a contact open position and a contact closed position, and an operating mechanism disposed in the housing and interconnected with the contacts for rotating the contacts altern |
| 6232855 |
Circuit interrupter with covered accessory case, adjustable under voltage relay, self-retaining |
May 15, 2001 |
| A molded case circuit breaker is taught with a housing base and a primary cover disposed on the housing base. The primary cover has a recess therein for an auxiliary module which is disposed in the recess. A secondary cover is disposed on the primary cover for covering the recess when th |
| 6208228 |
Circuit interrupter with improved trip bar assembly accomodating internal space constraints |
March 27, 2001 |
| A circuit interrupter including a housing, separable main contacts within the housing, and an operating mechanism within the housing and interconnected with the contacts. A trip mechanism is disposed within the housing and includes a rotatable trip bar assembly that, when selectively |
| 6204465 |
Circuit breaker with arc gas engaging paddles on a trip bar and/or crossbar |
March 20, 2001 |
| A molded case circuit breaker has paddles on the trip bar to utilize the arc gases generated during interruption to speed operation of the latchable operating mechanism and to protect the trip mechanism from debris in the arc gases. Alternatively, or in addition, lateral projections |
| 6157275 |
Circuit interrupter with cradle |
December 5, 2000 |
| A circuit interrupter including a housing, separable main contacts disposed in the housing, and an operating mechanism disposed in the housing and interconnected with the contacts. The operating mechanism includes a cradle for rotating from a first position to a second position in the |
| 6060674 |
Circuit interrupter with plasma arc acceleration chamber and contact arm housing |
May 9, 2000 |
| An electrical circuit interrupter comprising a housing with an operating mechanism disposed therein and including first and second separable main contacts disposed within the housing is taught. There is an electrically conducting first contact support which has a shape which substantiall |
| 6052047 |
Circuit interrupter with covered accessory case, adjustable under voltage relay, self-retaining |
April 18, 2000 |
| A molded case circuit breaker is taught with a housing base and a primary cover disposed on the housing base. The primary cover has a recess therein for an auxiliary module which is disposed in the recess. A secondary cover is disposed on the primary cover for covering the recess when th |
| 5973280 |
Circuit breaker with an anti-lift pivot handle |
October 26, 1999 |
| A circuit breaker handle is provided with a curved bearing surface at its pivot point. The handle bearing surface has a substantially constant radius and is connected to the body of the handle with a necked down handle extension. The handle extension has a width that is less than the |
| 5927484 |
Circuit breaker with welded contact interlock, gas sealing cam rider and double rate spring |
July 27, 1999 |
| A circuit breaker includes a housing, an operating mechanism and separable main contacts, and a rotatable crossbar which rotates to open and close the contacts. The crossbar interacts by way of a protrusion thereon with a rotatable, positive off-link. A handle mechanism is disposed in th |
| 5921380 |
Circuit interrupter with covered accessory case with accessory having lock-in feature and pull t |
July 13, 1999 |
| A molded case circuit breaker is taught with a housing base and a primary cover disposed on the housing base. The primary cover has a recess therein for an auxiliary module which is disposed in the recess. A secondary cover is disposed on the primary cover for covering the recess when th |
| 5910760 |
Circuit breaker with double rate spring |
June 8, 1999 |
| A circuit breaker includes a housing, an operating mechanism and separable main contacts, and a rotatable crossbar which rotates to open and close the contacts. The crossbar interacts by way of a protrusion thereon with a rotatable, positive off-link. A handle mechanism is disposed in th |
| 5693923 |
Motor operator for electrical switches |
December 2, 1997 |
| A motor operator unit for an electrical switch is pivotally mounted on a bracket to swing between a closed, operative position in which an actuator in the motor operator unit engages the switch handle for electrical operation of the switch handle and an open position in which the switch |
| 5565827 |
Circuit breaker with current conducting blow open latch |
October 15, 1996 |
| A circuit breaker has an electrically conductive blow open latch which forms part of the power circuit so that only short flexible shunts are needed between the latch and trip mechanism. Load current can be conducted from the contact arm to the electrically conductive latch solely throug |
| 5510759 |
Miniature circuit breaker with ground fault electronics supported by stiff conductors for easy a |
April 23, 1996 |
| A miniature ground fault circuit breaker having a housing assembled from molded sections has stiff conductors supporting the toroidal coils of the ground fault circuit in position in one molded section and aligning connectors secured to the stiff conductors for easier assembly of the |
| 5200724 |
Electrical circuit breaker operating handle block |
April 6, 1993 |
| Apparatus is provided for an electrical circuit breaker for preventing the handle thereof from being moved to the OFF position when the electrical contacts of the circuit breaker are welded closed. This apparatus mechanically limits the travel of the operating handle so that it may not |
| 5196658 |
Integral manual on/off crank assembly |
March 23, 1993 |
| An electric operator having a reciprocally mounted actuator is adapted to be mechanically coupled to an operating handle from a molded case circuit breaker or a molded case switch for moving the operating handle between an open position or, alternatively, to a closed position. The electr |
| 5057806 |
Crossbar assembly |
October 15, 1991 |
| A crossbar assembly is formed from an elongated metal bar. A pair of contact arm carriers are slid onto the metal bar and welded in place. Molded electrically insulated sleeves are sliding received at each of the crossbar. The insulated sleeves can be either molded directly on the cr |
| 5032813 |
Pinned shunt end expansion joint |
July 16, 1991 |
| A laminated contact assembly formed from a plurality of contact arm subassemblies includes a contact arm portion, for carrying a movable main or arcing contact, and a stationary conductor portion. A flexible shunt, form wound from a flat electrical conductor, is used to connect the c |
| 4996507 |
CT quick change assembly and force transmitting spacer |
February 26, 1991 |
| A molded case circuit breaker is provided with a quick change current transformer assembly. The current transformer is used to sense overcurrent conditions and apply a signal to an electronic trip unit to trip the circuit breaker. The quick change assembly includes an insulated removable |
| 4951020 |
Unriveted upper link securement cross-reference to related applications |
August 21, 1990 |
| A molded case circuit breaker is provided with a toggle assembly having upper toggle links secured to U-shaped members of a cradle assembly with a hardened pin. The pin is formed with annular grooves disposed intermediate the ends forming a center sleeve portion and stop surfaces at each |
| 4951019 |
Electrical circuit breaker operating handle block |
August 21, 1990 |
| Apparatus which is mechanically connected to and out of direct contact of the handle arm of an electrical circuit breaker to prevent the operating lever of the circuit breaker from being moved to the off position when the contacts of the circuit breaker are closed, due to a weldment of t |
| 4939491 |
Combination barrier and auxiliary CT board |
July 3, 1990 |
| A multipurpose combination barrier and auxiliary current transformer board is provided for a circuit breaker. The board is located at the rear of the circuit breaker housing to close an open portion of the housing and act as a barrier to prevent contact with internal circuit breaker comp |
| 4891617 |
Rubber stops in outside poles |
January 2, 1990 |
| A molded case circuit breaker is provided with rubber stop assemblies disposed between the contact assemblies adjacent the outside poles and the cover portion of the housing. The rubber stop assemblies are disposed such that they prevent the contact assemblies from damaging the cover. Th |
| 4887057 |
Cam roll pin assembly |
December 12, 1989 |
| A cam roll pin assembly includes a cylindrical portion having an extending axle at each end for receiving a small roller and a relatively larger roller. The smaller roller is provided for engaging the cam surface on the contact assembly. The larger roller is received within a slot. Retai |
| 4656444 |
Circuit breaker with force generating shunt |
April 7, 1987 |
| A circuit breaker with a force generate shunt characterized by a circuit breaker structure between spaced conductors with a fixed contact on one conductor and a movable contact on a contact arm that is movable between open and closed positions. A flexible shunt connected between the arm |
