| Patent Number |
Title Of Patent |
Date Issued |
| 6853277 |
Auxiliary magnetic trip system |
February 8, 2005 |
| An auxiliary magnetic trip system for a circuit breaker, the auxiliary magnetic trip system includes a strap configured to conduct a first level of electrical current and a second level of electrical current; a u-shape collar with a first pole face, the u-shape collar disposed around the |
| 6700467 |
Circuit interrupter operating mechanism |
March 2, 2004 |
| An operating mechanism controls and trips a separable contact structure arranged in a protected circuit. The mechanism includes a frame, a drive member pivotally coupled to the frame, a spring pivotally connecting the drive member to a drive connector, an upper link pivotally seated on t |
| 6639168 |
Energy absorbing contact arm stop |
October 28, 2003 |
| A circuit breaker cassette comprises a housing having a fixed contact, and a movable contact on a contact arm. The contact arm is positionable in a closed position and an open position, wherein the contact arm is closed when the movable contact is in contact with said fixed contact. A sp |
| 6590482 |
Circuit breaker mechanism tripping cam |
July 8, 2003 |
| A circuit breaker operating mechanism for separating a pair of electrical contacts within an electrical circuit breaker includes a lower link operatively connected to one of the electrical contacts. An upper link includes first and second legs extending from a central portion. The first |
| 6507256 |
Auxiliary magnetic trip system |
January 14, 2003 |
| An auxiliary magnetic trip system for a circuit breaker, the auxiliary magnetic trip system includes a strap configured to conduct a first level of electrical current and a second level of electrical current; a u-shape collar with a first pole face, the u-shape collar disposed around the |
| 6479774 |
High energy closing mechanism for circuit breakers |
November 12, 2002 |
| A circuit breaker operating mechanism comprises a movable handle yoke, a mechanism spring extending in tension from the handle yoke to a pin, and a lower link extending from the pin to a crank operably connected to a contact arm bearing a movable contact. The crank is positionable in ope |
| 6476337 |
Auxiliary switch actuation arrangement |
November 5, 2002 |
| An auxiliary switch activation mechanism is provided for use with a circuit breaker having an auxiliary switch and an operating mechanism for opening and closing main electrical contacts. The auxiliary switch activation mechanism includes a lever having a first end removably connectable |
| 6466117 |
Circuit interrupter operating mechanism |
October 15, 2002 |
| An operating mechanism controls and trips a separable contact structure arranged in a protected circuit. The mechanism includes a frame, a drive member pivotally coupled to the frame, a spring pivotally connecting the drive member to a drive connector, an upper link pivotally seated on t |
| 6459059 |
Return spring for a circuit interrupter operating mechanism |
October 1, 2002 |
| A return spring mechanism is arranged to operate with a circuit breaker operating mechanism during a trip condition. The circuit breaker operating mechanism is movable between a tripped position, a reset position, an off position and an on position. The return spring mechanism is attache |
| 6448521 |
Blocking apparatus for circuit breaker contact structure |
September 10, 2002 |
| A blocking apparatus for blocking a contact structure from closing in a circuit breaker is provided. The apparatus includes a link extending from the circuit breaker and connected to a movable contact arm. The contact structure, being operated by an operating mechanism, remains in a |
| 6437670 |
Magnetic release system for a circuit breaker |
August 20, 2002 |
| A magnetic release system for a circuit breaker, the magnetic release system includes a contact structure; a strap configured to conduct a first level of electrical current and a second level of electrical current; a u-shaped collar having a pole face, the u-shaped collar disposed around |
| 6421217 |
Circuit breaker accessory reset system |
July 16, 2002 |
| An accessory includes a trip arm biased by a spring to pivot in a clockwise direction about a trip arm pivot. A latch is arranged to pivot about a latch pivot and has the trip arm acting on a latch surface on the latch to bias the latch in a counter clockwise direction about the latch pi |
| 6403902 |
Circuit breaker bell alarm accessory having optional reset and lockout function |
June 11, 2002 |
| A combination air circuit breaker bell alarm reset and lock-out accessory unit interacts with the circuit breaker closing system to prevent charging of the circuit breaker closing spring until and unless the bell alarm module has been manually reset in one option and allows automatic res |
| 6400245 |
Draw out interlock for circuit breakers |
June 4, 2002 |
| A draw out interlock mechanism comprises a draw out trip arm pivotally attached in a draw out circuit breaker and an interlock activating assembly attached to a the draw out circuit breaker. The draw out trip arm comprises a first extension on a first end and a second extension on a |
| 6388547 |
Circuit interrupter operating mechanism |
May 14, 2002 |
| An operating mechanism controls and trips a separable contact structure arranged in a protected circuit. The mechanism includes a frame, a drive member pivotally coupled to the frame, a spring pivotally connecting the drive member to a drive connector, an upper link pivotally seated on t |
| 6379196 |
Terminal connector for a circuit breaker |
April 30, 2002 |
| A termination connector for a circuit breaker is disclosed. The termination connector preferably includes a plurality of single pole screw receiving members integrally attached by a molded housing for unitary attachment to a line or load end of a circuit breaker to assist in holding a nu |
| 6346868 |
Circuit interrupter operating mechanism |
February 12, 2002 |
| An operating mechanism controls and trips a separable contact structure arranged in a protected circuit. The mechanism includes a frame, a drive member pivotally coupled to the frame, a spring pivotally connecting the drive member to a drive connector, an upper link pivotally seated on t |
| 6340925 |
Circuit breaker mechanism tripping cam |
January 22, 2002 |
| A circuit breaker operating mechanism for separating a pair of electrical contacts within an electrical circuit breaker includes a lower link operatively connected to one of the electrical contacts. An upper link includes first and second legs extending from a central portion. The first |
| 6281458 |
Circuit breaker auxiliary magnetic trip unit with pressure sensitive release |
August 28, 2001 |
| An auxiliary magnetic trip unit for a circuit breaker arranged on the load strap of an industrial-rated circuit breaker to interrupt circuit current upon occurrence of a high-level short circuit fault. The magnetic trip unit employs a magnet yoke, an armature, a trip lever for interactin |
| 6259048 |
Rotary contact assembly for high ampere-rated circuit breakers |
July 10, 2001 |
| A circuit breaker rotary contact assembly employs a common pivot between the rotor assembly and the rotary contact arm. A pair of off-center expansion springs directly engage the rotor at one end and engage the rotary contact arm via a linkage arrangement at an opposite end thereof. |
| 6242703 |
Bell alarm with automatic reset for small frame air circuit breaker |
June 5, 2001 |
| An air circuit breaker bell alarm accessory interacts with the circuit breaker closing system to allow automatic resetting of the bell alarm module upon resetting of the circuit breaker operating mechanism. A lockout slide extends between the bell alarm module support and the bell al |
| 6232859 |
Auxiliary switch mounting configuration for use in a molded case circuit breaker |
May 15, 2001 |
| A molded case circuit breaker assembly using auxiliary switches to perform indication and control functions. The circuit breaker assembly having at least one pole comprising a stationary and a moveable contact where the moveable contact is connected to a moveable contact arm which is act |
| 6211758 |
Circuit breaker accessory gap control mechanism |
April 3, 2001 |
| An accessory for use within a circuit breaker is provided. The accessory includes an actuator having a movable member, a trip member and a link between the movable member and the trip member. The trip member is configured by including a seat portion that allows for a set gap between |
| 6211757 |
Fast acting high force trip actuator |
April 3, 2001 |
| A trip actuator (66) includes a trip spring (106) to bias the trip arm (104) in a clockwise direction about trip arm pivot (120). In the latched and ready to operate state, the clockwise moment about the axis of the latch pivot (132) created by force "F" opposes the counterclockwise mome |
| 6175288 |
Supplemental trip unit for rotary circuit interrupters |
January 16, 2001 |
| A supplemental magnetic trip unit is arranged on the load strap of an industrial-rated circuit breaker to interrupt circuit current upon occurrence of a short circuit fault. The trip unit employs a U-shaped magnet and a hinged armature that articulates the circuit breaker operating m |
| 6172584 |
Circuit breaker accessory reset system |
January 9, 2001 |
| Compliant assembly (110) includes a reset drive (112) mechanically cooperating with a plunger link (120) having a slide interface latch (130) via an intermediate plunger reset spring (142), plunger link (120) also being proximate to plunger (84) to both accept strikage from or become in |
| 6166344 |
Circuit breaker handle block |
December 26, 2000 |
| A circuit breaker having a crank for coupling a switching mechanism to the contact pole structure is presented. The crank has a pair of cam surfaces which cooperate with a blocking lever to restrict movement of the operating handle when the contacts of the circuit breaker are welded. The |
| 6130390 |
Contact position indicator for an industrial-rated circuit breaker |
October 10, 2000 |
| A circuit breaker contact position indicator assembly includes an indicator lever that interacts with the circuit breaker contact carrier through a indicator lever bell crank and a contact arm bell crank to provide true ON and OFF indication of the circuit breaker contacts. |
| 6114641 |
Rotary contact assembly for high ampere-rated circuit breakers |
September 5, 2000 |
| A circuit breaker rotary contact assembly employs a common pivot between the rotor assembly and the rotary contact arm. A pair of off-center expansion springs directly engage the rotor at one end and engage the rotary contact arm via a linkage arrangement at an opposite end thereof. |
| 6107902 |
Circuit breaker with visible trip indicator |
August 22, 2000 |
| A circuit breaker including a housing having a window, a line terminal and a load terminal, and a circuit trip assembly. The circuit trip assembly includes a rotatable cradle, a moveable armature latch and a pivotable trip support including a trip indicator. Upon the occurrence of a trip |
| 6100481 |
Circuit breaker operating handle torque compensation assembly |
August 8, 2000 |
| A circuit breaker operating handle charging torque compensating module includes an operating handle lever connecting between the operating handle and a support frame by means of an extension spring to maintain a uniform force exerted by the operating handle extension spring. |
| 6087913 |
Circuit breaker mechanism for a rotary contact system |
July 11, 2000 |
| A rotary contact circuit breaker employs a crank to couple a switching mechanism to the rotary contact pole structure. The use of a crank allows for the mechanism and pole structure the individually optimized without effecting the performance of the other. In particular the crank allows |
| 6087610 |
Closing springs release mechanism for industrial-rated circuit breaker |
July 11, 2000 |
| An air circuit breaker ratcheting mechanism includes a ratchet and pawl whereby the closing springs charging gear is prevented from reverse rotation during the closing springs charging operation. Upon completion of the charging operation, the ratchet and pawl become disengaged from the |
| 6084489 |
Circuit breaker rotary contact assembly locking system |
July 4, 2000 |
| The circuit breaker is characterized by separable contacts operable between a closed and an open position a contact arm having a latching surface and a latch arranged to engage the latching surface when the contacts are blown-open under short-circuit conditions. The arrangement of the la |
| 6054661 |
Circuit breaker bell alarm accessory with lockout function |
April 25, 2000 |
| An air circuit breaker bell alarm lock-out accessory interacts with the circuit breaker closing system to prevent charging of the circuit breaker closing spring until and unless the bell alarm module has been manually reset. A lockout slide on the bell alarm module support interacts with |
| 6037555 |
Rotary contact circuit breaker venting arrangement including current transformer |
March 14, 2000 |
| A rotary contact circuit breaker having a venting arrangement to vent gasses operated by a short circuit interruption to a location substantially above the load strap of the breaker whereby electrical components are not damaged by the gasses and ionized gasses from different phases a |
| 6019647 |
Circuit breaker line and load terminal |
February 1, 2000 |
| A spring-loaded cam electrical connector is used to rapidly connect circuit breaker load terminal straps with the associated electric distribution system wire conductors. Rotation of the cam in one direction traps the end of the wire conductor between the bottom of the cam support and th |
| 6005208 |
Industrial draw-out circuit breaker electrical connection indication |
December 21, 1999 |
| The front cover of an industrial draw-out circuit breaker is provided with a viewing window that allows visual access to an indicator flag for the purpose of identifying the true status of the electrical power connectors and secondary test connectors extending from the rear surface of th |
| 5986225 |
Circuit breaker bell alarm accessory with lock-out |
November 16, 1999 |
| An air circuit breaker bell alarm accessory interacts with the circuit breaker contact position indicator to provide local and remote indication of the occurrence of a circuit interruption. A drive pin extending from the bottom of the accessory interacts with a slot on the contact positi |
| 5981887 |
Contact position indicator for an industrial-rated circuit breaker |
November 9, 1999 |
| A circuit breaker ON/OFF contact position indicator employs a bell crank assembly interconnecting between the target indicator at the front of the circuit breaker enclosure and the circuit breaker contact closing shaft at the rear thereof to provide accurate real time indication of the O |
| 5960941 |
Circuit breaker bell alarm accessory with both automatic reset and lockout function |
October 5, 1999 |
| An air circuit breaker bell alarm unit allows selection of both bell alarm accessory lock-out facility along with automatic reset function. A plunger extending from the bottom of the bell alarm accessory interacts with the circuit breaker operating components to automatically reset the b |
| 5923261 |
Circuit breaker bell alarm accessory with automatic reset |
July 13, 1999 |
| An air circuit breaker bell alarm accessory interacts with the circuit breaker contact position indicator to provide local and remote indication of the occurrence of a circuit interruption. A drive pin extending from the bottom of the accessory interacts with a slot on the contact positi |
| 5910650 |
Manual charging mechanism for industrial-rated circuit breaker |
June 8, 1999 |
| An air circuit breaker closing spring charging mechanism includes a ratchet and pawl whereby the closing spring charging gear is protected from damage due to reverse rotation of the ratchet when the charged closing springs are later released. A locking latch prevents damage to the chargi |
| 5906271 |
Means of remote charge indication for high ampere-rated circuit breakers |
May 25, 1999 |
| Remote indication of the charge state condition of the circuit breaker closing springs is provided by a remote indicating unit. The indicating unit interfaces with the circuit breaker closing assembly to actuate an electric switch in response to the position of the closing assembly. |
| 5889250 |
Circuit breaker closing springs button interlock mechanism |
March 30, 1999 |
| An air circuit breaker ratcheting mechanism includes a ratchet and pawl whereby the closing springs charging gear is prevented from reverse rotation during the closing springs charging operation. Upon completion of the charging operation, the ratchet and pawl become disengaged from the |
| 5883351 |
Ratcheting mechanism for industrial-rated circuit breaker |
March 16, 1999 |
| An air circuit breaker ratcheting mechanism includes a ratchet and pawl whereby the closing springs charging gear is prevented from reverse rotation during the closing springs charging operation. Upon completion of the charging operation, the ratchet and pawl become disengaged from the |
| 5810628 |
Circuit breaker line and load terminal |
September 22, 1998 |
| A spring-loaded cam electrical connector is used to rapidly connect circuit breaker load terminal straps with the associated electric distribution system wire conductors. Rotation of the cam in one direction traps the end of the wire conductor between the bottom of the cam support and th |
| 5805041 |
Electronic trip unit conversion kit for high ampere-rated circuit breakers |
September 8, 1998 |
| A field-installable circuit breaker trip actuator unit includes a flux shifter unit that interfaces with the circuit breaker operating mechanism and is installable without dismantling the circuit breaker components. The flux shifter unit responds to an electronic trip unit to articulate |
| 5797483 |
Operating mechanism linkage assembly for high ampere-rated circuit breakers |
August 25, 1998 |
| A circuit breaker operating mechanism interacts with the circuit breaker movable contact arm by means of an electrically-insulative linkage. Tolerance adjustments are made within the linkage without requiring an additional electrically-insulative shield. |
| 5791457 |
Motor operator interface unit for high ampere-rated circuit breakers |
August 11, 1998 |
| A high ampere-rated circuit breaker which meets the electrical code requirements of the world market. The charging of the powerful operating spring controlling the circuit breaker contacts is made automatically by means of an electric motor. The motor interlock arrangement prevents r |
