Class 200/50.22 - Shutter over contacts

Subclass of Class 200 - Electricity: circuit makers and breakers
Definition: Subject matter wherein the interlock means is in the form
No. of patents: 39
Last issue date: 10/21/2008

Number	Title	Issue Date
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
7348505	Shutter locking system for draw-out circuit breakers and method of assembly thereof A cassette for a draw-out circuit breaker apparatus is disclosed. The cassette comprises a base having a front edge and a back edge, the back edge defining a back plane, a set of shutters disposed at the back plane and configured to open and close, and a set of shut...	03/25/2008
7310221	Switching installation provided with an electrically insulating barrier A switching installation (5) having a circuit breaker (12), which is connected to a cable connection (33), and optionally a disconnector (14) for making or breaking a conductive connection between the cable connection (33) and a ra...	12/18/2007
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
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
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
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
6590170	Portable Latch A latch kit comprising a member with at least one hook end, a tension member, and a hook plate. The hook plate is connected to the member by a tension member. The kit is intended to be used in conjunction with an industrial circuit breaker which is secure...	07/08/2003
6545859	Automatically operating interlock assembly for electrical cabinets An automatically operating interlock device prevents access to the interior of an electrical cabinet when the device within the cabinet is electrically connected with a power supply. The interlock device is particularly suited for arc resistant circuit br...	04/08/2003
6448519	Contact system arrangement for plug-in circuit breakers and base A plug-in contact system for a plug-in type circuit breaker is disclosed. The movable contacts are easily engaged within the circuit breaker by the design of the contact support which includes a guiding protrusion, thus lowering the necessary insertion fo...	09/10/2002
6414839	Shutter mechanism for vertical bus of motor control center A compact automatic shutter mechanism in an electrical enclosure provides enhanced protection against inadvertent electrical contact for personnel working within and around the electrical enclosure, and also makes it possible to install more equipment in ...	07/02/2002
6066814	Interlock for switchgear Electrical switchgear for receiving either a vacuum circuit breaker or a dummy element and including a levering-in assembly with a positional interlock bar that is operated by a levering-in block in the levering-in assembly and by a finger on the dummy el...	05/23/2000
5933319	Electrical panelboard having an enclosure over an exposed terminal of circuit breaker mounted to a panel of the electrical panelboard An enclosure for an external terminal of a circuit breaker on an electrical panelboard, which includes a body and a cover. The body defines an aperture for inserting an electrical load conductor and is securable adjacent a circuit breaker. The cover is mo...	08/03/1999
5831813	Breaker box front panel with window assembly A breaker box front panel with window assembly including a breaker box and a plurality of switches situated within an interior space of the breaker box. The switches are connected between ends of a pair of associated wires which are situated adjacent the ...	11/03/1998
5343355	Safety shutter device for drawout type switch gear The safety shutter device comprises, a fixed shutter blade (19) provided on the front face of the lead conductor carrying member (11), at least one shutter driving unit accommodated in an insertion space (18) which is between the lead conductor carrying m...	08/30/1994
5327321	Protective shutter assembly for electrical terminals and method of using same The present invention provides a shutter assembly for covering an exposed electrical terminal located in a control center into which removably inserts an electrical control device connecting to the terminal. The assembly includes a shutter to cover the ex...	07/05/1994
5200585	Drawout switchgear with improved levering-in mechanism and interlock A circuit breaker, and method of constructing same, in which a levering-in mechanism may be added after the circuit breaker has been assembled. The circuit breaker includes a chassis having first and second side plates which define upwardly open slots, wh...	04/06/1993
4926286	Enclosed switchboard An enclosed switchboard has a contact frame fitted with contacts which can move relative to a unit frame having a circuit breaker, an electromagnetic switch, and an auxiliary relay, etc. mounted thereon. The contacts can be operated to disconnected, test,...	05/15/1990
4768131	Pull-out frame with a guide rail for electric switchgear A pull-out frame for electric switchgear is provided in the vicinity of its side walls with bolts which serve as pivots or stops of guide rails which can be retrofitted. The guide rails are provided with a keyhole-like opening, the narrower part of which ...	08/30/1988
4757169	Electric switchgear having guiding means serving for positioning within a switchboard cell A circuit breaker comprises base angles to which sliding rails are connected. To the sliding rails are fastened coupling claws which have recesses for extending over coupling pins of a positioning drive. By posts of the coupling claws provision is made in...	07/12/1988
4713501	Partitioned switching panel with insertable switching carriage and adjustable shutter mechanism A partitioned switching panel of the type including a power switch provided with first switch contacts and mounted on a carriage which is movable toward and away from cooperating stationary second switch contacts disposed behind a partition of the switchi...	12/15/1987
4688144	Shutter assembly for a motor controller A shutter mechanism is provided for a motor control center of the type having a backwall with a stab opening for receiving a stab connector for making electrical contact with bus bars which are behind the panel. The shutter consists of two pieces, a stati...	08/18/1987
4565908	Drawout switchgear apparatus with retractable shutter mechanism for terminal stabs Drawout switchgear apparatus characterized by a cell having a plurality of spaced fixed terminal stabs therein, an insulating shutter structure extending across the terminal stabs, a switchgear unit removably disposed in the cell and including terminal me...	01/21/1986
4486815	Shutter device for control unit of control center A shutter device is provided for each of a plurality of control unit removably accommodated in vertically superposed unit spaces of a control center. A plate-shaped protective barrier is disposed on the rear surface of each unit space and includes three r...	12/04/1984
4468531	Safety shield assembly for a drawout-type circuit breaker A safety shield assembly for insertion within a drawout circuit breaker compartment between the load and line receivers in the compartment and the power stabs on the circuit breaker. The shield assembly utilizes a moveable shield, a pair of spring motors ...	08/28/1984
4447682	Isolation shields for a 2500-4000 amp circuit breaker compartment A shield mechanism for isolating line and load stabs within a 2500-4000 ampere circuit breaker compartment is disclosed having a primary operating arm for operating a lower moveable shield and an upper moveable shield interconnected by a reversing bell cr...	05/08/1984
4424425	Circuit breaker compartment shield assembly A shield assembly for isolating line and load stabs within a circuit breaker compartment when the circuit breaker is removed from the compartment. The assembly consists of a pair of separately hinged shields interconnected by a link which terminates in a ...	01/03/1984
4417108	Switchgear shutter There is provided by this invention a novel switchgear shutter design employing curvilinear displaced shutter means which provide an entirely metallic grounded surface between the potentially live contacts and the front of the compartments. This novel shu...	11/22/1983
4395602	Isolation shield for circuit breaker compartment secondary disconnects A slideably mounted insulating shield is positioned over the terminals of a secondary disconnect attached to the side wall of a circuit breaker compartment. Inserting the circuit breaker into the compartment brings the secondary disconnect terminals on th...	07/26/1983
4386246	Shield assembly for 800 to 1600 ampere circuit breaker compartments A compact and economic shield mechanism is used within circuit breaker compartments where a minimum separation distance exists between the end of the circuit breaker and the end of the compartment when the circuit breaker is first inserted within the comp...	05/31/1983
4351990	Interphase barrier for switchgear Draw-out circuit breaker apparatus is taught with an interphase barrier for metal enclosed switchgear. The interphase barrier includes a unitary member which is mounted on wheels so that it may be partially withdrawn when the circuit interrupter draw-out ...	09/28/1982
4285026	Parallel plane shutter for LK breaker Circuit breaker cubicle shutters wherein a pair of shutters are slidable vertically with respect to a back plate and with respect to each other and behind the back plate. The back plate is provided with a plurality of upper openings registering with upper...	08/18/1981
4272798	Composite groundable barrier for switchgear and grounding apparatus A grounding arrangement for a shutter for a high voltage metal clad switchgear arrangement is taught. The shutter is a composite of an electrically insulating material such as polyester and islands of electrically conductive material such as non-magnetic ...	06/09/1981
4216521	Composite groundable barrier for switchgear A shutter for high voltage metal clad switchgear is taught which is a composite of electrically insulating material such as polyester and islands of electrically conductive material such as non-magnetic aluminum. The polyester material reduces the chance ...	08/05/1980
4183073	Shutter for disconnect contacts of circuit breaker cubicle A shutter for a circuit breaker compartment in which the upper and lower stationary back disconnect contacts at the rear of the compartment are protected, as the circuit breaker is withdrawn from the compartment by a clam-shell shutter. The two halves of ...	01/08/1980
4146915	Shutter mechanism for an enclosed electrical switchboard An enclosed electrical switchboard, in which a circuit breaker including a movable contact is drawn out from or pushed in toward a stationary contact of a disconnecting switch, is provided with a cover for covering the stationary contact of the disconnect...	03/27/1979
4086452	Isolating switch shutter assembly for high voltage motor starter A high voltage motor controller which is capable of accepting a modular plug-in unit comprising a power fuse assembly and isolating switch apparatus of a drawout type, and characterized by a safety shutter mechanism for mechanically driving an isolating s...	04/25/1978
4038585	Insulating shutter mechanism for bus bars A control center characterized by an upright cabinet in which a plurality of vertical bus bars are disposed which bus bars are encased in a pair of planar molded barriers of insulative material which are in tight surface-to-surface contact with the bus ba...	07/26/1977
4002865	Drawout type circuit interrupter with interlocked levering mechanism An enclosed circuit interrupter includes a removable drawout unit mounted within an enclosure and sealed by an enclosure door. The drawout unit is movable between a connected position and a disconnected position by a levering mechanism operated by a lever...	01/11/1977

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Class 200/50.22 - Shutter over contacts