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| Number | Title | Issue Date |
| 5089795 | Compact molded case circuit breaker with movable contact arm rebound cushion 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 re... | 02/18/1992 |
| 5075658 | Molded case circuit breaker trip-to-test button and auxiliary switch interface 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 operatin... | 12/24/1991 |
| 5075659 | Compact molded case circuit breaker having external contact condition indication 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 re... | 12/24/1991 |
| 5067043 | Electric power distribution panelboard-switchboard bus bar insulation shield 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... | 11/19/1991 |
| 5059933 | Molded case circuit breaker operating cradle configuration 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 mechanis... | 10/22/1991 |
| 5059931 | Molded case circuit breaker cover insert 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... | 10/22/1991 |
| 5060107 | Molded case circuit breaker operating handle guard 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 han... | 10/22/1991 |
| 5051861 | Multiple circuit interrupter address identification system 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 diod... | 09/24/1991 |
| 5049846 | Compact molded case circuit breaker with increased ampere rating 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 re... | 09/17/1991 |
| 5046173 | Single branch circuit breaker support 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 arrange... | 09/03/1991 |
| 5043688 | Actuator-accessory interface unit for molded case circuit interrupter 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 a... | 08/27/1991 |
| 5038121 | Molded case circuit interrupter trip indicating handle 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 ... | 08/06/1991 |
| 5036303 | Bell alarm accessory arrangement for molded case circuit interrupter 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 a... | 07/30/1991 |
| 5027091 | Molded case circuit interrupter rating plug keying and interlock arrangement 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 corr... | 06/25/1991 |
| 5027093 | Molded case circuit breaker actuator-accessory unit having component tolerance compensation A compact circuit breaker containing an electronic trip unit employs an actuator-accessory unit to articulate the circuit breaker operating mechanism and separate the circuit breaker contacts to interrupt current within a protected circuit. A tolerance co... | 06/25/1991 |
| 5027092 | Tripping arrangement for molded case circuit interrupter 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 acces... | 06/25/1991 |
| 5023582 | Molded case circuit breaker compact latch asssembly A molded case circuit breaker employs a multiple latch assembly for maintaining the circuit breaker operating mechanism in a closed condition. The multiple latch assembly includes three separate latch levers mounted on a common latch support frame. The mu... | 06/11/1991 |
| 5021819 | Circuit breaker with positive over-center acceleration A molded case circuit breaker includes an operating handle yoke that contacts the cradle operator and drives the operating mechanism springs over-center when the circuit breaker operating handle is moved from its RESET to its ON position. The contact betw... | 06/04/1991 |
| 5015977 | Circuit breaker positive trip indication spring A positive trip indication spring is used with circuit breakers that provide colored trip indication through a visual access opening in the circuit breaker cover to ensure that the trip indicia on the circuit breaker operating handle align with the visual... | 05/14/1991 |
| 5014025 | Actuator-accessory reset arrangement for molded case circuit interrupter or electric switch 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 acces... | 05/07/1991 |
| 5008499 | Bi-stable interlock arrangement for molded case circuit breakers A bi-stable interlock arrangement allows two circuit interruption devices such as electric circuit breakers and electric disconnect switches to be interlocked such that only one such device can be turned ON at one time. The interlock is used with main and... | 04/16/1991 |
| 5004878 | Molded case circuit breaker movable contact arm arrangement A molded case circuit breaker having a pair of movable contact arms arranged within a single pole utilizes a shunt clip between the movable contact arms to insure electrical continuity between the contact arms and the support base during intense short cir... | 04/02/1991 |
| 4999464 | Molded case circuit breaker contact and contact arm arrangement A molded case circuit breaker movable contact arm electrically connects with the circuit breaker load terminal requiring only a small diameter auxiliary electrical conducting braid by pivotally arranging the contact arm within its support. The contact arm... | 03/12/1991 |
| 4991042 | Digital circuit interrupter with keypad data entry and display A circuit breaker containing an electronic trip unit utilizes a digital keypad and display to enter and display the trip parameters. The trip parameters are determined by means of a setpoint value that is incremented by means of an algorithm whenever the ... | 02/05/1991 |
| 4982173 | Rotatable trip test assembly for molded case circuit breakers A rotatable trip test assembly unit for molded case circuit breakers consists of a unitary plastic part that cooperates with the internal structure of the circuit breaker cover to provide return spring bias to the trip test button. The trip test assembly ... | 01/01/1991 |
| 4978816 | Circuit breaker handle interlock arrangement A handle interlock arrangement is attached to the top surface of a manually operable circuit breaker operating handle to prevent the handle from being locked in its "OFF" position when the circuit breaker contacts are actually in their closed condition. A... | 12/18/1990 |
| 4975667 | Molded case circuit breaker with increased ampere rating An electric circuit breaker enclosure includes a pultruded glass-filled plastic inset for added strength to the line and load terminal straps. The line and load terminal straps are fastened to the inset on the side and receive the corresponding line and l... | 12/04/1990 |
| 4970481 | Current limiting circuit breaker contact arm configuration 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 fixed and movable contacts become separate... | 11/13/1990 |
| 4970482 | Current limiting circuit breaker compact arc chute configuration 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 fixed and movable contacts become separate... | 11/13/1990 |
| 4967304 | Digital circuit interrupter with electric motor trip parameters A digital circuit interrupter includes a microprocessor programmed for tailored overcurrent protection to industrial power systems containing a plurality of electric motors as well as motor protective relays. A communication link permits the overcurrent s... | 10/30/1990 |
| 4965418 | Molded case circuit breaker line strap configuration A molded case circuit breaker enclosure cooperates with the current-limiting line strap to prevent the egress of ionized gases. The gases are generated by a high temperature arc which occurs when the contacts are separated under short circuit conditions.... | 10/23/1990 |
| 4965544 | Molded case circuit breaker exhaust barrier A combination panelboard-switchboard housing accepts plug-on connection with a plurality of modular electric switch-circuit breaker enclosures. The modular enclosure accepts circuit breakers or electric switches which can be field-installed with minor alt... | 10/23/1990 |
| 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 |
| 4959514 | Fusible electric switch A Fusible electric switch is herein described for increased ratings within industrial electrical distribution circuits by the provision of an arc exhaust gas controller. The arc gas controller cools and deionizes the arc gases that are generated upon sepa... | 09/25/1990 |
| 4957447 | Electric power busway plug alignment arrangement A locating and alignment pin provided on the bottom of an electric busway switch provides immediate location of the switch connector clips with respect to the busway connector tabs while, at the same time, aligning the switch interlock with the correspond... | 09/18/1990 |
| 4951182 | Modular plastic power-light pedestal enclosure A modular marina power pedestal and light pedestal enclosure is fabricated from a pair of opposing flanged plastic sidepieces that are sized to accept both lamp enclosures as well as electrical power centers. A wide variety of customer options that includ... | 08/21/1990 |
| 4950852 | Electric circuit breaker arc chute composition A current limiting circuit breaker having a pair of separable contacts closely spaced for electrodynamic repulsion upon the occurrence of a short circuit overload condition utilizes an arc chute to cool and extinguish the arc that occurs when the contacts... | 08/21/1990 |
| 4950841 | Thermally efficient splice joint for electrical distribution busway An electric power bus removable joint includes three spacer-connectors that automatically align the intervening splice plates and insulative plates used to electrically connect between adjoining busway sections. The spacer-connectors automatically attach ... | 08/21/1990 |
| 4945443 | Electronic circuit interrupter with combined keypad and display An electronic circuit interrupter digital display and keypad device includes a display to view circuit breaker settings combined with a keypad to select settings and values to be displayed. The display and keypad device connects to an electronic trip unit... | 07/31/1990 |
| 4945450 | Modular electric switch-circuit breaker assembly A multi-component electric switch-circuit breaker module permits electric switches and circuit breakers to be field-installed within existing panelboard-switchboard enclosures. The module contains a pair of compartments that are accessed by separate doors... | 07/31/1990 |
