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7595710 Maglatch mechanism for use in lighting control pod  
An electrical contact assembly includes a magnetic latch solenoid for actuating a moveable contact of a contact pair. The magnetic latch solenoid includes a magnet that latches the contact assembly...
7561014 Fast insertion means and method  
Methods and apparatus are provided for rapidly moving a filter into and out of an optical beam. A shuttle carries the filter at a first end and first and second spaced apart pieces of magnetic...
7504918 Magnetically activated switch  
An apparatus for sensing relative positions of mechanically coupled devices. The apparatus includes a magnetically actuated switch connected to a set of flux conductors to form a switch assembly. A...
7298236 Circuit breaker electromagnetic tripping device  
A circuit breaker electromagnetic tripping device in which the contact between the movable contacts and the stationary contacts is stable and well, and the tripping does not tend to fail is...
7236071 Medium voltage vacuum contactor  
A medium voltage vacuum contactor comprising for each pole, a vacuum envelope which contains a fixed contact and a corresponding movable contact; and actuating means providing the energy required...
7170375 Permanent-magnet ground fault circuit interrupter plug and its permanent-magnet mechanism therein  
A permanent-magnet ground fault circuit interrupter plug with self-diagnosing function having an enclosure and a permanent-magnet mechanism encased in the enclosure. In one embodiment, the...
7049915 Bistable magnetic actuator  
An actuator is described having two fixed magnetic structures, and a mobile magnetic part able to move towards either one of the two ends of the magnetic structures. The actuator can be in the form...
6677842 Load disconnecting switch especially for use in motor vehicles  
A load-disconnecting switch has a permanent-magnetic holding circuit. A coil ( 5 ), upon excitation thereof, generates a magnetic flux that is opposite to the magnetic flux of the permanent magnet...
6538541 Bistable contactor  
A bistable contactor comprises at least two concentrically arranged coils, an armature that is movable relative to the coils, a permanent magnet that is stationary relative to the coils, and a...
6424244 Magnetic switch  
The invention relates to a magnetic switch having a yoke which has the shape of a rotationally symmetrical cup on the base of which is arranged a permanent magnet. The flux of the permanent magnet...
6351199 Position sensor for latching solenoid valve  
The invention is directed to an improved position sensor for a latching solenoid ( 15 ). In the preferred embodiment, the solenoid has a permanent magnet ( 16 ), a coil ( 18 ) adapted to be...
6150909 Electromagnetic switching device  
6137387 Magnetically-retained armature retainer for electrical switches  
An armature retainer for a magnetic switch retains an armature adjacent an internal surface of a carrier sheet with electrodes thereon forming switch contacts. The retainer includes a polishing...
6121862 Magnetic flux concentrator shield for use in overload relay  
A magnetic flux concentrator shield is disclosed for use with magnetic flux sensors in an overload relay for multiple pole electromagnetic contactor applications. The magnetic flux concentrating...
6097246 Current limiting breaking device using electromagnetic repulsion coil  
The present invention includes a first switch 4a, a second switch 4b and a capacitor 4d. The first switch 4a normally in a closed state is connected in series between a power source 1 and load, and...
6084281 Planar magnetic motor and magnetic microactuator comprising a motor of this type  
Planar magnetic motor (100), characterized by the fact that it comprises a plurality of magnetic poles (111, 121) made of a ferromagnetic material placed at the center of planar coils (110, 120)...
6040751 Battery section switch  
The battery section switch is switched between a terminal post and a main circuit using a contact arrangement. The contact arrangement can be locked in its closed position via a toggle spring...
6005459 Switching device  
A switching device providing highly-reliable, frictionless, adjustment-free operation is described. Comprised of a comparatively small number of moving parts, the various aspects of the invention...
5986528 Electrical switching device  
An electrical switching device prevents moving contacts from welding to stationary contacts in a switching device. This is achieved using an auxiliary magnet system in the main current path, which...
5952903 Operation of residual current devices  
A push button residual current device employs a single push button to perform setting and testing operations. Over a first part of the down stroke of the push button a test trip is initiated which...
5912604 Molded pole automatic circuit recloser with bistable electromagnetic actuator  
An electromagnetic actuator and an automatic recloser incorporating such actuator are disclosed. The actuator is shown to include a housing, a permanent magnet member, a coil, an armature, mounted...
5883557 Magnetically latching solenoid apparatus  
A magnetically latching solenoid apparatus is characterized by a non-magnetic armature carrying a permanent magnet having poles aligned with the throw axis of the device. The poles of the magnet...
5872499 Current sensing relay  
An electromagnetic relay, having ON and OFF states, for connecting a source of electrical current to a load, said relay comprising: an armature movable between ON and OFF positions corresponding,...
5867081 Bistable electromagnetic relay arrangement  
A polarized bistable electromagnetic relay arrangement comprising at least two monostable instantaneous electromagnetic relay devices with a L-shaped yoke, a permanent magnet disposed between both...
5805041 Electronic trip unit conversion kit for high ampere-rated circuit breakers  
A field-installable circuit breaker trip actuator unit includes a flux shifter unit that interfaces with the circuit breaker operating mechanism and is installable without dismantling the circuit...
5734309 Energy-saving electromagnetic switching arrangement  
An electromagnetic switching arrangement for operating a control device, with the arrangement having two electromagnets (1, 2) which are formed respectively from a coil (3.1, 3.2) and a magnetic...
5703735 Magnetic single point contact latch assembly  
A single-point magnetic contact latch assembly for "parking" a read/write head of a memory storage device over a data-free landing zone during off-power conditions has one or more permanent...
5699031 Electromagnetic actuator with rotary core  
Electromagnetic actuator with rotary core, comprising, housed in a casing: a magnetic yoke, a pair of fixed adjacent coils alternately energized, and a rotating element with a magnetic core; the...
5684443 False-trip-resistant circuit breaker  
A circuit breaker includes a coil arrangement for actuating an armature to open the breaker. To prevent false tripping during high transient currents drawn by a load, the coil arrangement has first...
5677657 Circuit breaker  
An electro-magnetic operating device 10 for a circuit breaker includes a coil 12 defining a cavity 14. A stator frame 20 which includes a pole piece 18 is arranged about the coil 12. A tube, which...
5670923 Tripping device reset arrangement  
A field-installable circuit breaker trip unit conversion kit in the form of a flux shifter unit that interfaces with the circuit breaker operating mechanism is installable without dismantling the...
5631614 Magnetic self-latching electric contact  
A contactor device includes a magnetic latch apparatus to reduce bounce between contact pads on closing. The magnetic latch apparatus includes a first magnet assembly and a second magnet assembly...
5612659 Battery protecting circuit breaker  
A latching circuit breaker is provided that is small and switches with a small amount of current. A battery switch incorporating the circuit breaker mounts on a battery top and is easily added as...
5565828 Circuit breaker  
A circuit breaker with an input side and an output side for connecting and disconnecting conductors in an electrical circuit comprising a magnetic breaker device which acts on a latching mechanism...
5554961 Energy efficient electromagnetic circuit  
An energy efficient electromagnetic latching relay circuit. A permananet magnet having an attached electrical contact is free to move between two positions a second electrical contact is situated...
5543766 Operating device for a circuit breaker  
An electro-magnetic operating device 10 for a circuit breaker includes a coil 12 which defines a cavity 14. A pair of elements 34, 44 are slidably arranged within the cavity 14, a first element 34...
5541790 Single point magnetic contact latch assembly  
A single-point magnetic contact latch assembly for "parking" a read/write head of a memory storage device over a data-free landing zone during off-power conditions has one or more permanent...
5523730 Switch with mangnetically-coupled armature  
A switch has a carrier sheet with electrodes formed on an internal side thereof to form switch contacts. An armature is held in slidable contact with the internal side of the carrier and the...
5519368 Compact coil assembly for transient voltage protection  
A compact coil assembly is provided for protecting electrical components from transient voltage surges. The assembly includes a bobbin having a cylindrical core with two ends. A first and second...
5512869 Linear control apparatus for a circuit-breaker  
Linear control apparatus for a circuit-breaker, the apparatus including a slidably-mounted tubular arm actuated by a solenoid, and a "disengagement" first slide which presses against the tubular...
5475353 Micromachined electromagnetic switch with fixed on and off positions using three magnets  
A micromachined electromagnetic switch, including two soft magnets situated in fixed positions above and below a permanent magnet, toggles between two fixed positions by the application of current...
5453724 Flux shifter assembly for circuit breaker accessories  
A flux shifter unit with increased magnetic susceptibility for use with a combined bell alarm and lock-out accessory is connected with the electronic trip unit that controls a high ampere rated...
5414396 Shunt trip device  
A shunt trip device includes an armature 18 pivotally mounted on a frame 12 of a ferro-magnetic material. A "U"-shaped member 20 is mounted on the frame 12 via a spacer 30 of a non-magnetic...
5402092 Electro-magnetic device  
An electro-magnetically operable device 12 for a circuit breaker 10 comprises a coil 13 that defines a cavity. A first plunger 14 and a second plunger 16 are located within the cavity, adjacent one...
5402300 Collet lifting mechanism for die handling unit  
A magnet is fixed to the inner surface of the ceiling of a cylinder-like yoke which is closed at the top, and a holding plate is attached to the yoke through a slider. A coil and collet are...
5379014 Vacuum circuit breaker  
A vacuum circuit breaker comprising an external coil which is arranged outside a vacuum interrupter, and a power supply circuit which causes current to flow through the external coil. An...
5363270 Rapid response dual coil electromagnetic actuator with capacitor  
An electromagnetic actuator having an integral capacitor and secondary coil for reducing opening and closing response times without the need for switching circuits. The secondary coil produces a...
5343346 Single point magnetic contact hatch assembly  
A single-point magnetic contact latch assembly for "parking" a read/write head of a memory storage device over a data-free landing zone during off-power conditions has one or more permanent...
5321389 Battery charge monitor  
A battery charge monitor for automotive vehicles that includes electronic circuitry for connection to the vehicle battery and responsive to battery voltage to provide a first electrical signal when...
5241288 Electromagnetic selector equipped with a plurality of selection positions  
An electromagnetic selector device comprising a single permanent magnet and a plurality of electromagnets, which are excited in contrast or in agreement with the permanent magnet, to form a...
Matches 1 - 50 out of 119 1 2 3 >