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6388859 Shock resistant breaker shunt trip  
A shunt trip assembly having a tripping solenoid and a locking solenoid selectively blocks movement of the tripping solenoid to prevent inappropriate tripping of a circuit breaker during shock...
5387892 Permanent magnet release solenoid for automatic circuit breakers and method of making  
The solenoid (1) is of the type having a magnetic circuit (2, 3, 13) on which a permanent magnet (6) and an electric winding (7) would induce respective magnetic fields; the magnetic circuit has a...
5039968 Rotor setting arrangement  
A system for setting in particular the rotor (2) of a coaxial or waveguide switch in n possible locking positions S1, S2, S3, . . . has an axially staggered drive on one side and on the opposite...
5012292 Device for setting the rotor of a rotary switch  
Device for setting the rotor of a rotary switch in one of three possible switching positions (positions 1 to 3). Such rotary switches can be for example wave guide or coaxial switches. The...
4947284 Field-installable heavy duty undervoltage release  
An undervoltage tripping unit for a power line circuit breaker features a holding solenoid and a boostig solenoid having their associated plungers coupled to move together so as to be retracted...
4893101 Resettable ground fault circuit interrupter  
A resettable circuit interrupter in a ground fault detector circuit utilizes a housing which slideably retains a solenoid coil wound on a bobbin. A contact carrier is attached to the bobbin and...
4733212 Pulse latching solenoid  
A latching solenoid is provided which has first and second coils having a central axial opening arranged to produce oppositely polarized first and second magnetic fields along the axial opening. A...
4649241 Solenoid actuated high speed, high current making switch with a movable contact ring  
A high-speed, high-current making switch is provided which has a driver which forms an air cylinder in the housing and which has movable contacts attached thereto. The driver moves the contacts to...
4647889 Rotary control having variable detents  
A rotary control having a variable detent is disclosed. The control, for electrical instruments and the like, includes a manually rotatable shaft to which a plate is coaxially mounted. The plate...
4544987 Magnetically operated AC switching device with delay-on-dropout  
A magnetically operated AC switching device, such as an AC electrical contactor, is operable with a delay-on-dropout feature to permit safe shutdown of equipment energized therethrough in case of...
4500861 Sector motor having latching means for rotor in multiple positions  
A sector motor has a rotor which is rotatable to one of three positions in a housing. The rotor carries field magnets surrounding stationary armature poles carried by the housing. An arcuate 90°...
4327344 Solenoid with mechanically latchable plunger  
A mechanically latchable solenoid having a single coil and a single-piece armature or core plunger having a latch pin fixed thereto. The plunger is moved to a first, retracted position by...
4213109 Electromagnetic tripping device  
An electromagnetic tripping device for protecting a printed circuit card by opening an electrical circuit of the card in response to an overcurrent of the circuit. The device includes contacts and...
3984795 Magnetic latch construction  
An electrically releaseable permanent magnet latch includes a magnetic tube disposed within a U-shaped magnetic frame. Disposed within the tube are a lightweight armature and a coil spring biasing...
3944957 Flux-transfer trip device for a circuit breaker  
This trip device comprises a permanent magnet of cobalt-rare earth material and a plunger which is normally held in a withdrawn position by the permanent magnet. A tripping coil surrounds the...
3893053 Electromagnet latching means for plunger  
A solenoid assembly or plunger-electromagnet comprising independently wound working and auxiliary armatures; the auxiliary armature comprising a flanged, cylindrical element, coaxial with respect...
3886507 Adjustable latch for a relay  
A magnetic latch for use with relay is provided. In one embodiment of the invention, a latch which can be assembled to a standard relay in the field is provided for latching the relay in a...
3845433 SWITCH OPERATOR WITH TRIPPING MEANS  
A switch operator has a trip spring charged and latched by a single closing motion, and a closing spring charged by release of the trip spring and released to close the switch by the closing...
3825937 PRINT ELEMENT LIFTING ASSEMBLY FOR A TIME RECORDER  
A recorder for automatically printing a record receiver, such as a card, with actual time and elapsed time. The recorder includes a chute assembly with cooperating electronic elements for...
3808571 SELF LOCKING SOLENOID  
A self locking solenoid is provided by this invention. The solenoid has a magnetizable member which is responsive to a magnetic field to provide translation action of the magnetizable member. A...
3792391 ELECTRICALLY OPERATED TWO POSITION ELECTROMECHANICAL MECHANISM  
An electrical type of lock wherein the mechanical movement is actuated in response to a solenoid system triggered by an electrical momentary signal. The locking bolt alternatively changes from a...
3743898 LATCHING ACTUATORS  
Latching devices which utilize the residual magnetism retained in the relatively soft magnetic materials of the magnetic curcuit for its latching force. The actuators are proportioned so as to...
3728654 SOLENOID OPERATED PLUNGER DEVICE  
Within a cylindrical yoke of magnetic material are disposed first and second axially spaced coils in concentric relationship therewith. A first permanent magnet is arranged inside the first coil...
3708773 CASH STORAGE DRAWER WITH ELECTRICALLY ACTUATED LATCH MEANS  
Electromagnetically actuated latch means for releasing a cash storage drawer from a housing on operation of a switch to control electric power to electromagnetic means.
3671899 PERMANENT MAGNET DETENT MEANS FOR A ROTARY SOLENOID  
An electromagnetic rotary solenoid having a permanent magnet rotor and a plurality of selectable coils utilizes the combination of a permanent magnet and a coil for the no signal or detent...
3629754 MAGNETICALLY ACTUATED COUPLING  
A magnetically actuated coupling for transmitting linear forces and composed of a pair of coupling elements arranged in a magnetic field, which is preferably produced by an electromagnet having a...
3599133 LATCH RELAY MOTOR STRUCTURE  
A clapper-type magnetic latch relay with electromagnetic operating means having a remanent magnet core with one end surface coupled with an optimum pole face area on one side of an air gap without...
3597712 SWITCH ELEMENT  
A switch element having at least one pair of contacts to be switched-on and switched-off states, where the switch-on and the switch-off are controlled in accordance with only the attractive force...
3535590 HIGH SENSITIVITY ELECTROMECHANICAL ACTUATORS  
3525963 ELECTRO-MAGNETIC ACTUATOR WITH ARMATURE ASSEMBLY SLIDABLE BETWEEN TWO LIMIT POSITIONS  
3519336 REARVIEW MIRROR ADAPTOR FOR ANGLING THE MIRROR BY REMOTE CONTROL  
3518592 HOLDING RELAY WITH OPERATING CHARACTERISTICS WHICH REMAIN CONSTANT WITH FLUCTUATIONS OF TEMPERATURE  
3506883 ELECTRICAL LOCKING DEVICE  
3504315 ELECTRICAL SOLENOID DEVICES  
3503021 DIRECT ACTION LATCHING DEVICE WITH ELECTRICAL AND MANUAL RELEASE MEANS  
3488611 MULTIPLE SWITCH CONTROL  
3470510 MAGNETIC LATCH RELAY  
3432695 INTERMITTENT MOTION DEVICES  
3432784 MAGNETIC ACTUATOR AND LATCH  
3431002 MAGNETIC DOOR LATCH  
3421125 SOLENOID ACTUATED DEVICE  
3387188 Magnetically latchable relay  
3358254 Electrically actuated release mechanism  
3349356 Electromagnetic latching device  
3346827 Solenoid with detent means  
3343112 Electromagnetic motor device  
3307131 Electromagnetic actuator with detent means  
3304525 Polarized relay for controlling devices provided with to-and-fro moving elements  
3302146 Rotary armature flux shifting device  
3263134 Magnetic latching relay  

Matches 1 - 50 out of 69 1 2 >