Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 8183480 | Withdrawable device of main circuit for vacuum circuit breaker Disclosed is a withdrawable device of main circuit for a circuit breaker. A ring-shaped guide recess is formed at a central part of a transfer nut screw-coupled to a lead screw, and supporting surfaces are formed on side surfaces of the guide recess. And, rotation p... | 05/22/2012 |
| 8115123 | Configurable circuit breaker A configurable circuit breaker is disclosed which is, for example, applicable for medium voltage range, with flexibility in configuration, based on the electrical and mechanical constraints. The circuit breaker can include multiple poles, which can be fitted on a sh... | 02/14/2012 |
| 8063323 | Circuit breaker replacement tool A circuit breaker replacement tool made of a cart with a base plate, wherein the base plate has at least two wheels. The cart has a right side and a left side with both sides connected on one end to the base plate. A height adjustable support arm holds a main linear... | 11/22/2011 |
| 7964809 | Cam operated spring discharge interlock mechanism Disclosed herein is a method of moving and altering movement of a breaker mounted spring discharge interlock lever during racking and unracking of a breaker with an enclosure. The method includes, rotating a racking screw to rack the breaker into or out of the enclo... | 06/21/2011 |
| 7893370 | Module front for a switchgear assembly module, switchgear assembly module and electrical switchgear assembly The invention relates to a module front for a switchgear module, particularly a slide-in module, comprising a control device, the control device being integrated in the module front, and the module front forms an integral component of the switchgear module. The inve... | 02/22/2011 |
| 7834281 | Draw out circuit breaker assembly having a telescopic racking handle A draw out circuit breaker assembly which includes a draw out circuit breaker having a plurality of contacts configured for connecting and disconnecting an electrical power source to an electrical load, a breaker cassette including a draw out support plate housing o... | 11/16/2010 |
| 7790994 | Draw-out power cell disconnect and isolation mechanism with rack-out guide tray Methods and integrated apparatus are disclosed for electrically disconnecting and allowing external support and access for electrical devices in a power conversion system cabinet. The apparatus includes a support structure that translates a power conversion system c... | 09/07/2010 |
| 7582837 | Withdraw-in and withdraw-out apparatus for air circuit breaker An air circuit breaker is provided wherein a rotational force is accurately discontinued at a movement completion time of assuming a connected position, a test position or a disconnected position by a breaker body in the process of withdrawing in and withdrawing out... | 09/01/2009 |
| 7544907 | Special provisions for network protector retrofits A retrofit assembly structured to allow a CM22 type circuit breaker to engage, and be enclosed by, a CMD type circuit breaker tank is provided. The retrofit assembly includes a levering mechanism, a circuit breaker bus assembly having bus support members, and a door... | 06/09/2009 |
| 7485817 | Electrical switching apparatus and adjustable mounting assembly therefor An adjustable mounting assembly for a power circuit breaker includes a frame having a first sidewall disposed opposite a first side of the housing of the power circuit breaker and a second sidewall disposed opposite the second side of the housing. At least one movea... | 02/03/2009 |
| 7440259 | Closure device for a withdrawable rack A closure device for a withdrawable rack adapted for receiving power circuit breaker includes a plate arrangement having at least two plates provided with openings and movable relative to one another so that the plate arrangement is changeable between an open positi... | 10/21/2008 |
| 7368674 | Compact integral rotational drawout stop device with linear permissive A stop device for an electrical device cell includes a generally flat, rectangular stop member and a generally flat, elongated permissive member. The stop member is, preferably, part of a stop member assembly that includes a biasing device. The cell includes a pair ... | 05/06/2008 |
| 7365446 | Wind power plant having power module mounted on tower foundation and method for use in constructing same The invention relates to a method for constructing a wind energy plant and to a wind energy plant as such. An aim of one aspect of the invention is to provide a method for constructing wind energy plants at lower expenses and more rapidly. According to one aspect, a... | 04/29/2008 |
| 7311538 | Tap-off interlock A bus to tap-off device interlock having a first position wherein the tap-off device can be installed or removed from the busway section and a second position in which an installed tap-off device can not be removed from the busway section and an uninstalled tap-off ... | 12/25/2007 |
| 7277294 | Contactor draw out tray An electrical contactor draw out tray has a movable frame and a stationary frame in which the movable frame carries the electrical components for an electrical feeder circuit. The stationary frame is preferably housed within a power distribution center and has input... | 10/02/2007 |
| 7203040 | Method and circuit breaker for reducing arc flash during maintenance in a low voltage power circuit Maintenance trip functions override the normal or specified trip functions of a low voltage circuit breaker to reduce pickup currents and/or time delays to effect faster trips, which reduces arc energy produced by faults during maintenance or testing on a live circu... | 04/10/2007 |
| 7186933 | Handle attachment, assist mechanism therefor, and electrical switching apparatus employing the same An assist mechanism is for a handle attachment of a circuit breaker having a housing with an operating member operable among a plurality of positions. The handle attachment includes a casing coupled to the circuit breaker housing and enclosing an actuating assembly ... | 03/06/2007 |
| 7141747 | Switching apparatus having a withdrawable-part rack and a lockable power circuit breaker A power circuit breaker is intended to be effectively locked in a simple manner in a withdrawable-part rack. For this purpose, a locking device is provided having a first component, which is fixed in the withdrawable-part rack, and a second component, which is fixed... | 11/28/2006 |
| 7129430 | Low-voltage circuit breaker A low-voltage circuit breaker includes at least one switching-on catch for initiating a switching-on process, and at least one insertion mechanism, which has an insertion shaft, for insertion of the circuit breaker into the withdrawable frame, or for removal of the ... | 10/31/2006 |
| 7124488 | Retrofit breaker adapter system and method The present invention is directed to a system for modifying a circuit breaker for removable installation in a cell of switchgear system, wherein the unmodified circuit breaker is not adapted for mounting in the cell. The system includes an adapter frame to which the... | 10/24/2006 |
| 7091432 | Power circuit breaker A power circuit breaker includes an insertion rack which is arranged in a distribution unit and a lock system for locking the power circuit breaker in the insertion rack in a locking system. The locking system can be actuated by a drive mechanism, in particular by t... | 08/15/2006 |
| 7078634 | Mounting structure for an electric switch The aim of the invention is to achieve, in the simplest possible manner, a movement of an electric switch (3) of a medium-high voltage switch panel on a mounting structure (1) between an interrupt position, a test position and an operating position. To... | 07/18/2006 |
| 7075021 | Multiple-hole terminal lug, bussing assembly and electrical switching apparatus including the same A multiple-hole terminal lug is for a circuit breaker including a load terminal and a conductive terminal extension coupled thereto. The multiple-hole terminal lug includes a mounting portion and a receiving portion having a plurality of receptacles for electrically... | 07/11/2006 |
| 7067746 | Travelling mechanism for a withdrawable circuit-breaker A travelling mechanism for a withdrawable circuit-breaker includes a crank handle that is secured in a manner that prevents it from being removed. A shaft of the crank handle revolves around an input shaft and is guided in a manner that permits it to be displaced in... | 06/27/2006 |
| 7067747 | Protective unit to prevent contact with conductive contacts in a withdrawable space of switching device A protective unit may prevent contact with conductive contacts in a withdrawable rack of a switching device. This may include one displaceable protective plate and lever arrangement for operating the protective plate. The lever arrangement has two levers that are in... | 06/27/2006 |
| 7064283 | Device for fixing a power circuit breaker in an insertion rack A device is for fixing a circuit breaker in an insertion rack. The device includes at least one arresting unit which is connected to the insertion rack and belongs to the power circuit breaker. The arresting unit is connected to a control rod which is movably arrang... | 06/20/2006 |
| 7064641 | Cathedral door shutter assembly A shutter assembly for a shuttered bus assembly is provided. The shuttered bus assembly is coupled to a circuit breaker housing assembly. The circuit breaker housing assembly is structured to enclose a circuit breaker assembly. The circuit breaker assembly is struct... | 06/20/2006 |
| 7057123 | Safety interlock for circuit breaker housing assembly and extraction device An interlock assembly for a circuit breaker housing assembly and a circuit breaker extraction device wherein the interlock assembly has a first and second component. The first component is coupled to a circuit breaker housing assembly and the second component is cou... | 06/06/2006 |
| 7053321 | Apparatus operating an isolation switch in coordination with a circuit breaker The movable conductors of a three phase isolation switch are incorporated into the electrically insulative molded shaft, thereby mechanically supporting them and isolating them from the metal axle of the shaft. Movable contacts on the ends of each movable conductor ... | 05/30/2006 |
| 7034233 | Device for controlling a blocking mechanism of an electric switch in a switch cell A device is for controlling the movement of a blocking mechanism in an electric switch which is displaceably arranged in a switch cell. The device includes a push element and an oblique surface, whereby the oblique surface extends in the fitting position of the devi... | 04/25/2006 |
| 7030593 | Multiple path variable speed constant frequency device having automatic power path selection capability The present invention relates to variable speed constant frequency (VSCF) devices and methods for maximizing engine generator efficiency. In one embodiment, a VSCF device may include at least two paths for conducting power to the load. One path, a line inductor path... | 04/18/2006 |
| 7022923 | Locking device for withdrawable circuit-breakers A locking device is for low-voltage circuit-breakers. It can travel into a frame including a lock and a control member to be activated through the lock. The control member interacts with an internal locking slide when a circuit-breaker is moved into the frame, the l... | 04/04/2006 |
| 7019228 | Method for controlling a displaceable electrical switching module The invention relates to a method for controlling an electrical switching module which can be displaced between an entry position and an exit position. The switching module comprises switching contacts of vacuum switching tubes; an isolating element which can be als... | 03/28/2006 |
| 7019230 | Racking device and power module therefor A racking device performs a circuit breaker racking operation. The racking device includes a base with wheels and a brake to facilitate moving the racking device and positioning it with respect to a switchgear cabinet. An elongated tubular member extends substantial... | 03/28/2006 |
| 6998549 | Interlock assembly and safety switch employing the same An interlock assembly is for locking the operating assembly of a safety switch when the cover thereof is open or removed. The safety switch includes an enclosure with the cover and side walls. The operating assembly includes a bracket and a spring-toggle mechanism w... | 02/14/2006 |
| 6998550 | Rollout interface linkage for network protectors An interface linkage assembly for a network protector is provided. The network protector includes a circuit breaker structured to move in and out of a housing assembly, and having a mechanical trip assembly and an electrical close assembly. The interface linkage inc... | 02/14/2006 |
| 6972388 | Power circuit breaker A power circuit breaker includes a switching pole enclosure for accommodating at least one switching pole, whose switching contacts, when closed, rest against one another on a predetermined contact plane. It further includes a switching shaft for transferring drive ... | 12/06/2005 |
| 6951990 | Apparatus for racking circuit breakers into and out of switchgear A motorized racking operator for racking a circuit breaker into and out of electrical switchgear is disclosed. The racking operator includes a motor, an On-Off control in signal communication with the motor, an anti-rotation bracket securely attached to the motor, a... | 10/04/2005 |
| 6878891 | Switchgear enclosure A method and a door arrangement for a switchgear enclosure, with the enclosure having a top and bottom panel, a back panel and two opposing side panels. The enclosure includes an interior framework supporting a draw-out circuit breaker. The door arrangement comprise... | 04/12/2005 |
| 6864444 | Locking device A locking device of an electrical switch which can be moved between a disconnected position and an operating position with the switching states of the electrical switch. A first strip has a control contour which extends in a first direction and has a ramp which inte... | 03/08/2005 |
