Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 8174812 | Mechanically interlocked transfer switch A transfer switch apparatus has first, second, and third electrical terminals extending outwardly from a housing. A first vacuum bottle is positioned in the housing and has a pair of contactors therein. A second vacuum bottle is positioned in the housing and has a p... | 05/08/2012 |
| 8164875 | Portable motorized frame remote racking tool A portable motorized racking tool and a method for installing, removing and testing electrical equipment is described herein. A circuit breaker having a frame can be attached to a metal surface around the electrical equipment with magnets. The frame can support a so... | 04/24/2012 |
| 8144445 | Micro-electromechanical system based switching A current control device is disclosed. The current control device includes control circuitry and a current path integrally arranged with the control circuitry. The current path includes a set of conduction interfaces and a micro electromechanical system (MEMS) switc... | 03/27/2012 |
| 8144446 | Isolated current sensor The present disclosure includes a power measurement, circuit breaker or integrated protection system including isolated analog-to-digital modulators for measuring current using current sensors, such as, for example, current shunts, in a single or multiphase power sy... | 03/27/2012 |
| 8054606 | Remote operation of a motor control center subunit disconnect A system and method are provided for remotely actuating a subunit disconnect in a motor control center subunit. A motor control center subunit includes a subunit housing configured to fit within a motor control center and a subunit disconnect configured to selective... | 11/08/2011 |
| 8023240 | Operating device An operating device is provided having a first button, a second button, and a regulating member. The first button has a tubular hole having a bottom, and is able to be pressed in the direction from the opening edge of said tubular hole to the bottom. The second butt... | 09/20/2011 |
| 8023239 | Control module for an electric circuit breaker, method for operation thereof, and electric protection system A control module with interrupt function for an electric circuit breaker has a voltage input for a control voltage, an output carrying the control voltage to which output an interrupter for the circuit breaker can be connected, an input for the control voltage fed b... | 09/20/2011 |
| 7965486 | Arc flash detection system An arc flash detection system includes a sensor for determining and responding to the presence of an arc flash condition in electrical equipment by detecting a pressure rise, rate of pressure rise and/or ultraviolet radiation characteristic of an arc flash, and gene... | 06/21/2011 |
| 7881033 | High-voltage system and high-power circuit breaker with cooling The high-voltage system has at least one feed line and at least one high-power circuit breaker, the at least one feed line having a longitudinally extended feed line inner conductor and a feed line outer conductor surrounding the feed line inner conductor, and the h... | 02/01/2011 |
| 7839617 | Electronic trip unit for circuit breakers An electronic trip unit for a circuit breaker is disclosed. The electronic trip unit has a processing circuit, and a real time clock circuit that is operational in the absence of current in the circuit breaker. The processing circuit is responsive to input signals r... | 11/23/2010 |
| 7796369 | Devices, systems, and methods for shunting a circuit breaker Certain exemplary embodiments comprise an electrical bypass conductor adapted for installation in a circuit breaker. The electrical bypass conductor can be adapted to be operatively electrically coupled to a load side of the circuit breaker. The electrical bypass co... | 09/14/2010 |
| 7746617 | Overload relay and operating method thereof An overload relay, which trips a current flow between a power source and a load, includes a trip capacitor that stores therein an electric charge to excite a trip coil so as to trip the current flow, a reset capacitor that stores therein an electric charge to excite... | 06/29/2010 |
| 7738231 | Overvoltage protection device with simplified display system and corresponding production method A device (1) for protecting an electrical installation from overvoltages, having at least one protection component (2) and disconnection means (3) capable of changing from a closed configuration to an open configuration, as well as signaling mea... | 06/15/2010 |
| 7724489 | Circuit breaker with high speed mechanically-interlocked grounding switch A circuit breaker apparatus with an integrated grounding switch has a housing with first and second bushings extending outwardly of the housing. A first vacuum bottle is positioned in the housing and has a pair of contactors therein. A second vacuum bottle is positi... | 05/25/2010 |
| 7672109 | Safety switching apparatus for safe disconnection of an electrical load A safety switching apparatus for safe disconnection of an electrical load in an automated installation has at least one input for connecting a signaling device. The safety switching apparatus has an evaluation and control unit and at least one switching element cont... | 03/02/2010 |
| 7672108 | Fault interrupter and disconnect device A circuit or fault interrupting and disconnect device includes a tripping apparatus that ensures a vacuum interrupter of the device is opened upon initiation of a change of state of an associated disconnect blade assembly. The disconnect blade assembly may have an o... | 03/02/2010 |
| 7656636 | Electronic trip device provided with a power supply circuit comprising voltage raising means and circuit breaker comprising one such trip device The electronic trip device comprises at least one current sensor, a rectifying circuit to supply a supply current, an electronic processing unit to control an actuator designed to actuate an opening mechanism of the main conductor, and an electric power supply circu... | 02/02/2010 |
| 7656637 | Power control system pseudo power-up, aircraft including the power control system and method of controlling power in an aircraft A power control system with a pseudo-power up, an aircraft including the power control system and a method of controlling power in an aircraft. On-board wiring is protected from faults by electronic circuit breakers (ECBs), which may also control AC/DC electrical po... | 02/02/2010 |
| 7633736 | Circuit interrupter including nonvolatile memory storing cause-of-trip information A circuit breaker includes separable contacts, an operating mechanism structured to open and close the separable contacts, and a trip mechanism. The trip mechanism includes a sensor structured to sense current flowing through the separable contacts, a processor coop... | 12/15/2009 |
| 7619868 | Apparatus and method for scalable power distribution According to one aspect of the invention, a plug-in module is provided for installing in a power distribution assembly. In one embodiment, the plug-in module may include an overcurrent protection device, a power cable, which may include a first end coupled to the ov... | 11/17/2009 |
| 7619869 | Electrical circuit breaker A circuit breaker for multi-phase power includes an opening-closing apparatus configured to open and close each phase of the multiphase power, a detection unit configured to detect a fault current in at least one phase of an electrical installation, a plurality of c... | 11/17/2009 |
| 7599162 | Overload protection control mechanism for a power supply The present invention discloses an overload protection control mechanism for a power supply, wherein a control mechanism installed between two connectors automatically switches the DC power states of the output signal of the overload protection circuit according to ... | 10/06/2009 |
| 7580235 | Systems and methods for monitoring and controlling circuit breakers Systems and methods for presenting information corresponding to circuit breakers and for controlling such circuit breakers are disclosed. In one embodiment, the system can include a menu-driven, pointer-accessible graphical user interface via which an operator can r... | 08/25/2009 |
| 7558040 | Trip indicator member, and limiter and electrical switching apparatus including a plurality of trip indicator members A limiter includes three current limiters. Each current limiter includes a first end disposed proximate a first housing surface and electrically connected to a corresponding first terminal, a second end disposed proximate a second housing surface and electrically co... | 07/07/2009 |
| 7492564 | Protection apparatus for an electrical load The trip unit of a circuit breaker provides overload protection for a contactor used to energize a load such as a motor while still providing conventional protection for the wiring serving the motor. The trip unit of the circuit breaker eliminates the need for a sep... | 02/17/2009 |
| 7492563 | Low-voltage circuit breaker comprising an interface unit A low-voltage circuit breaker comprising a casing containing at least one fixed contact and at least one mobile contact. The circuit breaker moreover comprises, inside said casing, a first communication bus, designed to interface a plurality of accessories and devic... | 02/17/2009 |
| 7471495 | Vacuum circuit breaker having a high current-carrying capacity The vacuum switching chamber has two contact pieces and is provided with at least one heat pipe for dissipating heat. The heat pipe contains a working medium for dissipating the heat by evaporating the working medium in a section, referred to as the evaporator, of t... | 12/30/2008 |
| 7440251 | Multi-path switching configuration A multi-path switching configuration provides independent switching of multiple circuit paths. In a preferred arrangement, a plurality of circuit interrupters have one end connected in common with each other and a second end providing a circuit path connection. An o... | 10/21/2008 |
| 7440250 | Circuit breaker including open neutral interlock A circuit breaker includes line and load terminals, separable contacts electrically connected between the line and load terminals, and a line neutral pigtail. An operating mechanism including an operating handle is adapted to open and close the contacts. A trip circ... | 10/21/2008 |
| 7436639 | Compact ground fault circuit interrupter module A compact module with a pair of transformers and a double pole single throw relay (DPST) mounted onto a housing to create a self contained assembly for installation in a ground fault circuit interrupter (GFCI) as a unit. The first transformer has a core and is elect... | 10/14/2008 |
| 7428132 | Protection device with lockout test The present invention is directed to a protective device including a plurality of line terminals and a plurality of load terminals configured to be connected to at least one load. A test circuit is coupled to the plurality of line terminals and the plurality of load... | 09/23/2008 |
| 7426100 | Drive kinematics in a hybrid circuit-breaker A device for the actuation of the movable contacts of a hybrid circuit breaker allows the following time diagram to be implemented: command the opening of the interrupting chamber, offset the opening of the vacuum switch so as to allow the interrupting chamber conta... | 09/16/2008 |
| 7417840 | Self-supplied electronic protection device for automatic circuit-breakers An electronic self-supplied protection device for automatic circuit-breakers that includes: a supply device that draws energy from the stretch of electrical network protected by said circuit-breaker; a control device with at least two levels of operation, where the ... | 08/26/2008 |
| 7414823 | Holder for use in semiconductor or liquid-crystal manufacturing device and semiconductor or liquid-crystal manufacturing device in which the holder is installed Affords a holder for use in semiconductor or liquid-crystal manufacturing devices—as well as semiconductor or liquid-crystal manufacturing devices in which the holder is installed—in which temperature uniformity in the processed-object retaining face is heighten... | 08/19/2008 |
| 7408274 | Control and operating condition monitoring of dual series switch contactors for electric motor or other electrical load A circuit for controlling at least two power switches that are series connected between a source of electrical power and an electrical load, for energizing the load in response to a signal at a control input. The circuit includes a programmed controller having an in... | 08/05/2008 |
| 7391597 | Switchgear with arc-resistant features An arrangement capable of being assembled with either an existing installed electrical equipment enclosure having an access door or during the fabrication and assembly of such an electrical equipment enclosure that increases the arc-resistant capabilities and charac... | 06/24/2008 |
| 7371980 | Apparatus and methods for securing switch devices Apparatus and methods for lockout of toggle switches, such as those toggle switches that include a captivating switch head (e.g., an enlarged and/or offset switch head) disposed on a cylindrical-shaped switch arm of the toggle switch. In one example, the apparatus a... | 05/13/2008 |
| 7368895 | Apparatus for a power supply with brownout protection and the protecting method for the same An apparatus for a power supply with brownout protection and the method thereof are proposed. As a brownout condition occurs, the apparatus informs at least one microprocessor to process the shutdown process timely. The apparatus includes a power factor correction (... | 05/06/2008 |
| 7369022 | Auxiliary switch sub-assembly and electrical switching apparatus employing the same An auxiliary switch sub-assembly is provided for a telecommunication system circuit breaker including a housing having an opening, separable contacts inside the housing, and an operating mechanism operating the separable contacts between open and closed positions. T... | 05/06/2008 |
| 7369389 | Electronic trip unit for circuit breakers An electronic trip unit for a circuit breaker is disclosed. The electronic trip unit has a processing circuit, a real time clock chip, and a power source for powering the real time clock chip in the absence of current in the circuit breaker. The processing circuit i... | 05/06/2008 |
