Patents Represented by Attorney Walter C. Bernkopf
  • Patent number: 5117211
    Abstract: A compact molded case circuit breaker with increased ampere rating employs a latch assembly for maintaining the circuit breaker operating mechanism in a closed condition against a pair of powerful operating springs. To increase the mechanical advantage required to move the operating handle against the springs, a retractable handle extender is attached to the handle. For higher-rated circuit applications, a lug cover extension is added to the line end of the breaker to assist in extinguishing the intense arc that occurs during circuit interruption and to protect the line lugs from inter-phasal circuit faults. A visual access slot is arranged next to the circuit breaker handle to ascertain and verify the condition of the circuit breaker contacts. The line and load terminal straps are slotted to receive protrusions on the bottom of the line and load terminal lugs and provide anti-turn facility to the line and load terminal lugs under short circuit overcurrent conditions.
    Type: Grant
    Filed: November 8, 1990
    Date of Patent: May 26, 1992
    Assignee: General Electric Company
    Inventors: Roger J. Morgan, Irenaeus S. Panus, Ronald G. Pekrul, Thomas F. Papallo, Jr., Robert A. Morris, Henry J. Tucholski, Hamon L. Craft
  • Patent number: 5089795
    Abstract: A compact molded case circuit breaker with increased ampere rating employs a latch assembly for maintaining the circuit breaker operating mechanism in a closed condition against a pair of powerful operating springs. To increase the mechanical advantage required to move the operating handle against the springs, a retractable handle extender is attached to the handle. For higher-rated circuit applications, a lug cover extension is added to the line end of the breaker to assist in extinguishing the intense arc that occurs during circuit interruption and to protect the line lugs from inter-phasal circuit faults. A visual access slot is arranged next to the circuit breaker handle to ascertain and verify the condition of the circuit breaker contacts. A rebound cushion is inserted on the interior surface of the circuit breaker cover to deter the return of the movable contact arm during contact separation under extreme overcurrent conditions.
    Type: Grant
    Filed: November 8, 1990
    Date of Patent: February 18, 1992
    Assignee: General Electric Company
    Inventors: Roger J. Morgan, Irenaeus S. Panus, Ronald G. Pekrul, Thomas F. Papallo, Jr., Robert A. Morris, Henry J. Tucholski, Hamon L. Craft
  • Patent number: 5075659
    Abstract: A compact molded case circuit breaker with increased ampere rating employs a latch assembly for maintaining the circuit breaker operating mechanism in a closed condition against a pair of powerful operating springs. To increase the mechanical advantage required to move the operating handle against the springs, a retractable handle extender is attached to the handle. For higher-rated circuit applications, a lug cover extension is added to the line end of the breaker to assist in extinguishing the intense arc that occurs during circuit interruption and to protect the line lugs from inter-phasal circuit faults. A visual access slot is arranged next to the circuit breaker handle to ascertain and verify the condition of the circuit breaker contacts.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: December 24, 1991
    Assignee: General Electric Company
    Inventors: Roger J. Morgan, Irenaeus S. Panus, Ronald G. Pekrul, Thomas F. Papallo, Jr., Robert A. Morris, Henry J. Tucholski, Hamon L. Craft
  • Patent number: 5075658
    Abstract: An electronic trip molded case circuit breaker includes components that are designed for high speed robotic assembly. A unitary trip-to-test button is down-loaded within the circuit breaker housing for automatic alignment with the circuit breaker operating mechanism during the circuit breaker assembly process. A unitary auxiliary switch interface unit is also down-loaded within the housing for automatic alignment with the operating mechanism during the assembly process.
    Type: Grant
    Filed: July 16, 1990
    Date of Patent: December 24, 1991
    Assignee: General Electric Company
    Inventors: David J. Lesslie, Dennis J. Doughty
  • Patent number: 5067043
    Abstract: A combination panelboard-switchboard housing accepts plug-on connection with a plurality of electric switch-circuit breaker modules. Circuit breakers can also be directly connected into the bus bars in a plug-on connection with minor modification. The bus bars are "edge-mounted" such that the minor dimension of the bus bars is perpendicular to the bottom of the housing to receive the modules as well as the circuit breakers, per se. Plastic or fiber insulation shields are arranged over those bus bars that are not connected with the circuit breakers or modules to prevent inadvertent contact with the bus bars when energized.
    Type: Grant
    Filed: December 13, 1990
    Date of Patent: November 19, 1991
    Assignee: General Electric Company
    Inventors: Robert G. Markowski, Denis A. Perzan, John A. Morby, Dean A. Robarge
  • Patent number: 5060107
    Abstract: A molded case circuit breaker with a visual access slot next to the circuit breaker operating handle allows the conditions of the circuit breaker contacts to be visually ascertained. To prevent inadvertent displacement of the circuit breaker operating handle when the circuit breaker is connected within an electrical distribution circuit, a handle guard is positioned over the circuit breaker operating handle. The handle guard is arranged such that the circuit breaker operating handle is free to reciprocate between the ON, OFF and TRIPPED positions while the operating handle guard is in position.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: October 22, 1991
    Assignee: General Electric Company
    Inventor: Roger N. Castonguay
  • Patent number: 5059933
    Abstract: A molded case circuit breaker of the type containing an electronic trip unit and a combined acutator-accessory unit to articulate the circuit breaker operating mechanism employs an optimum cradle configuration within the circuit breaker operating mechanism. The optimized cradle interacts with the circuit breaker latch assembly to substantially reduce the tripping force required to articulate the operating mechanism.
    Type: Grant
    Filed: September 14, 1990
    Date of Patent: October 22, 1991
    Assignee: General Electric Company
    Inventors: Roger N. Castonguay, David Arnold
  • Patent number: 5059931
    Abstract: A molded case circuit breaker of the type using electrodynamic repulsion to separate the circuit breaker contacts under intense overcurrent conditions also includes an arc chute arrangement for cooling and quenching the arc that occurs during such contact separation. A plastic insert added to the interior of the circuit breaker cover multi-functionally retains the arc chute within the circuit breaker case while providing clearance for the circuit breaker operating handle shutter.
    Type: Grant
    Filed: August 27, 1990
    Date of Patent: October 22, 1991
    Assignee: General Electric Company
    Inventor: David J. Lesslie
  • Patent number: 5051861
    Abstract: Low voltage electric switchgear equipment includes a central programmer unit electrically interconnected with electronic main and branch circuit interrupters within the same enclosure and used with a multi-phase power distribution circuit. Indicating diodes are arranged on each of the circuit interrupters for signaling the occurrence of an overcurrent condition. The same indicating diodes are arranged for responding to address commands generated by the field programmer as to the exact location of each circuit interrupter within the enclosure.
    Type: Grant
    Filed: January 9, 1990
    Date of Patent: September 24, 1991
    Assignee: General Electric Company
    Inventors: Indrajit Purkayastha, Clinton K. Martin
  • Patent number: 5049846
    Abstract: A compact molded case circuit breaker with increased ampere rating employs a latch assembly for maintaining the circuit breaker operating mechanism in a closed condition against a pair of powerful operating springs. To increase the mechanical advantage required to move the operating handle against the springs, a retractable handle extender is attached to the handle. For higher-rated circuit applications, a lug cover extension is added to the line end of the breaker to assist in extinguishing the intense arc that occurs during circuit interruption and to protect the line lugs from inter-phasal circuit faults. A visual access slot is arranged next to the circuit breaker handle to ascertain and verify the condition of the circuit breaker contacts.
    Type: Grant
    Filed: October 29, 1990
    Date of Patent: September 17, 1991
    Assignee: General Electric Company
    Inventors: Roger J. Morgan, Irenaeus S. Panus, Ronald G. Pekrul, Thomas F. Papallo, Jr., Robert A. Morris, Henry J. Tucholski, Hamon L. Craft
  • Patent number: 5046173
    Abstract: A compact single branch circuit breaker insulative support used within lighting panelboards is converted from an existing double branch support with minor alterations. The single branch circuit breaker arrangement allows the circuit breakers to be arranged in a closely-packed configuration within the lighting panelboard enclosure.
    Type: Grant
    Filed: October 18, 1990
    Date of Patent: September 3, 1991
    Assignee: General Electric Company
    Inventor: Robert A. Wall, Jr.
  • Patent number: 5043688
    Abstract: An integrated protection unit is a circuit interrupter which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the accessory components contained within the integrated protection unit cover from the environment. A combined overcurrent trip actuator and multiple accessory unit can be field-installed within the integrated protection unit. The combined actuator-accessory unit includes electronic control circuitry for the accessories along with mechanical trip and reset interface components. An actuator-accessory unit arranged within the interrupter cover interacts between the actuator-accessory unit and the interrupter operating mechanism to separate the interrupter contacts and interrupt a protected circuit.
    Type: Grant
    Filed: May 3, 1990
    Date of Patent: August 27, 1991
    Assignee: General Electric Company
    Inventors: Roger N. Castonguay, Thomas F. Papallo, Jr.
  • Patent number: 5038121
    Abstract: An operating handle assembly for molded case circuit interrupters is robotically assembled to the circuit breaker operating mechanism without requiring any auxiliary fastening device. A visual access slot in the circuit breaker cover allows the condition of the circuit breaker contacts to be visually ascertained by use of colored indicia carried by the operating handle skirt. A slidably mounted handle shutter cooperates with the operating handle to prevent egress of arc exhaust gases in the event the circuit breaker contacts are closed or opened during overcurrent conditions when the circuit breaker is installed within an industrial power distribution circuit.
    Type: Grant
    Filed: July 27, 1990
    Date of Patent: August 6, 1991
    Assignee: General Electric Company
    Inventors: Victor G. Fraulo, David J. Lesslie, Michael C. Guerrette, Andrew M. Candelora, Dennis J. Doughty
  • Patent number: 5036303
    Abstract: An integrated protection unit is a circuit interrupter which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the accessory components contained within the integrated protection unit cover from the environment. A combined overcurrent trip actuator and multiple accessory unit can be field-installed within the integrated protection unit. The combined actuator-accessory unit includes electronic control circuitry for the accessories along with mechanical trip and reset interface components. One such accessory used with the integrated protection unit is a bell alarm for indicating the status of the circuit interrupter contacts.
    Type: Grant
    Filed: May 3, 1990
    Date of Patent: July 30, 1991
    Assignee: General Electric Company
    Inventors: Thomas F. Papallo, Jr., Roger N. Castonguay
  • Patent number: 5027092
    Abstract: An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the accessory components contained within the integrated protection unit cover from the environment. A combined overcurrent trip actuator and multiple accessory unit can be field-installed within the integrated protection unit. The combined actuator-accessory unit includes electronic control circuitry for the accessories along with supplemental trip and reset interface components. The reset mechanism allows the actuator-accessory unit to become reset without interfering with the operation of the integrated protection unit. The trip interface components allow the circuit interrupter to interrupt a protected circuit by operation of the actuator-accessory unit.
    Type: Grant
    Filed: May 3, 1990
    Date of Patent: June 25, 1991
    Assignee: General Electric Company
    Inventors: Roger N. Castonguay, Thomas F. Papallo, Jr.
  • Patent number: 5027091
    Abstract: An electronic circuit interrupter includes an electronic trip circuit contained within a circuit interrupter enclosure along with an externally accessible rating plug for setting the ampere rating. The rating plug includes keying tabs that fit within corresponding keying slots formed on the top surface of the electronic circuit interrupter enclosure. Interlock is provided between the rating plug and the electric panelboard which includes a plurality of electronic circuit interrupters connected within an industrial power system. Tabs formed on the side walls of the rating plug are trapped under the panelboard face plate to prevent removal of the rating plug without first removing the panelboard face plate.
    Type: Grant
    Filed: February 15, 1989
    Date of Patent: June 25, 1991
    Assignee: General Electric Company
    Inventors: David J. Lesslie, Robert A. Morris, Alan J. Messerli, Graham A. Scott, Alexander A. Krajewski
  • Patent number: D318460
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: July 23, 1991
    Assignee: General Electric Company
    Inventors: Dennis W. Heath, James I. Smith, Richard E. Saunders
  • Patent number: D319627
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: September 3, 1991
    Assignee: General Electric Company
    Inventors: James I. Smith, Dennis W. Heath, Richard E. Saunders
  • Patent number: D320385
    Type: Grant
    Filed: April 24, 1989
    Date of Patent: October 1, 1991
    Assignee: General Electric Company
    Inventors: Robert L. Owens, Paul D. Carpenter
  • Patent number: D320386
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: October 1, 1991
    Assignee: General Electric Company
    Inventors: Richard E. Saunders, James I. Smith, Dennis W. Heath