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| Number | Title | Issue Date |
| 7335049 | Connector assembly for housing insulation displacement elements An electrical connector for terminating at least one electrical conductor comprises a first side and a second side each comprising a housing including a cavity for receiving at least a first IDC element, a cap including a pivot portion and a cover portion, where the... | 02/26/2008 |
| 7315229 | Electromagnetic relay Provided is an electromagnetic relay which does not require a braided wire for securing a current capacity of a main contact unit. The electromagnetic relay includes a main contact unit inserted into a power supply path to a load and an arc contact unit connected in... | 01/01/2008 |
| 7268308 | Isolation switch for power transfer A power system including a power transfer device that prevents a common load from at once being powered by a main and auxiliary power source, and eliminates any possibility of back feeding the main power source from the auxiliary power source. First and second circu... | 09/11/2007 |
| 6590481 | Fast acting, electrically powered operator for transfer switch and transfer switch incorporating same An electrically powered, fast acting transfer switch utilizes a single action solenoid that, alternately, through a mechanical assembly, moves the handle of one electric power switch between OFF and ON positions. A coupling including a rigid strap operate... | 07/08/2003 |
| 6002579 | Switchgear unit A switchgear unit comprising two switching devices (1, 2) which are provided with a reversing combination, which switchgear unit is of simple design and allows easy assembly and disassembly by the customer. The reversing combination comprises an assembly ... | 12/14/1999 |
| 5070252 | Automatic transfer switch An automatic transfer switch having two sets of phase switches, one set for connection between a normal source of power and a load, and the other set for connection between an emergency power source and the load. The transfer switch includes two pairs of ... | 12/03/1991 |
| 5043687 | Adjustable walking beam interlock mechanism A walking beam for interlocking control devices such as circuit breakers is characterized by a central bracket for supporting, on a mounting plate of the control devices, the beam through its central pin, and a single screw is provided for adjusting the c... | 08/27/1991 |
| 4954798 | Device for coupling reversible electromagnetic contactors to each other with an interlock unit An electromagnetic contactor coupling device, in which electromagnetic contactors are put side by side with an interlock unit sandwiched therebetween for preventing the electromagnetic contactors from simultaneously turning on, and are integrally coupled ... | 09/04/1990 |
| 4883927 | Locking arrangement for two switchgears The contactors for a pair of switchgears are coupled via a blocking body in such a way that upon activation of one switchgear the other switchgear, which acts upon the blocking body in a sense opposite to that of the first switchgear is blcoked in its act... | 11/28/1989 |
| 4788453 | Arrangement for the logical interlinkage of mechanical signals Mechanical signals which are made available in the form of limited travel distances can be fed, for obtaining at least one output variable, to an arrangement in which plungers assigned to the input variable are arranged in space parallel to each other, wh... | 11/29/1988 |
| 4717899 | Contactor with additional switchblock An additional switchblock is laterally connected to a contactor of a magnetic control relay. The terminals of the switchblock and contactor are provided for on the front side opposite that of the support bar. A hook connection is used between the two late... | 01/05/1988 |
| 4689714 | Electric control device adaptable to a two state switching device An electric control device adaptable to a two state switching device is provided comprising two electromagnets disposed head to tail and each having a coil inside which a coil is slidably mounted, and two rocking levers which each comprise a first arm hav... | 08/25/1987 |
| 4598264 | Locking mechanism for a mutual mechanical interlocking of two adjoining switch apparatuses Two similar switch apparatuses are mounted in switching direction at equidirectional closing direction onto a base. Each apparatus has an extension which is movable together with the armature of the corresponding apparatus and which extends in a respectiv... | 07/01/1986 |
| 4590451 | Interlocking contactor assembly A star-delta contactor in which a traveling contact is provided with a pair of contact bases which are formed as a slide metal. The contact bases perform a seesaw movement in a direction where their mutual end portions are engaged and are bent at the conn... | 05/20/1986 |
| 4516100 | Mechanical interlock for vertically mounted circuit breakers A mechanical interlock for a pair of vertically mounted circuit breakers, each circuit breaker having a trip latch mechanism for opening the circuit breaker and a mechanical contact position indicator for indicating the open or closed position of the circ... | 05/07/1985 |
| 4513269 | Interlocking contactor assembly A contactor assembly is disclosed comprising a case having a plurality of serially and vertically sectioned pole chambers, each provided with a traveling contact and a pair of operation frames. A traveling contact bar having right and left arm portion is ... | 04/23/1985 |
| 4356363 | Locking device for contact carriers A locking device for two juxtaposed and spaced electromagnetic switching devices is disclosed. In the switching devices, contact carriers are provided which can be moved back and forth between first and second switching positions. The motion of the contac... | 10/26/1982 |
| 4328476 | Electromagnetic relay having two synchronized armatures An electromagnetic relay mounted within a casing comprises a coil provided with an axial core forming a magnetic circuit with a yoke and two L-shaped armatures. A first arm of each armature consists of a magnetic plate while a second arm serves to actuate... | 05/04/1982 |
| 4021678 | Automatic transfer switch An automatic transfer switch having two sets of phase switches, one set for connection between a normal power source and a load and the other set for connection between an emergency power source and the load. The transfer switch also includes two neutral ... | 05/03/1977 |
| 3997861 | Interlock circuit override relay An interlock circuit override relay for providing a single energization bypass of an interlock circuit for each manual actuation of the relay, the relay being especially useful for bypassing the ignition seat belt interlock circuit employed in late model ... | 12/14/1976 |
| 3943475 | Latch relay with electrical reset A relay has an abutment mounted adjacent its armature for movement therewith. A spring-biased tapered pin engages the abutment when the relay is energized. This causes the relay to maintain a latched, first switch state. An electromagnetic releaser is the... | 03/09/1976 |
| 3936782 | Automatic transfer switch An automatic transfer switch having two sets of phase switches, one set for connection between a normal power source and a load and the other set for connection between an emergency power source and the load. The transfer switch also includes two neutral ... | 02/03/1976 |
