| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 201 | MAGNETIC LATCH FOR A VOICE COIL ACTUATOR | US11755997 | 2007-05-31 | US20080297986A1 | 2008-12-04 | Bela Peter Szeifert; Michael Peter Dunk |
| Magnetically latching and releasing a voice coil actuator for controlling electrical switchgear. The voice coil actuator includes a voice coil magnet disposed on a common longitudinal axis with respect to a voice coil assembly. A coil of the voice coil assembly exerts a magnetic force on the voice coil assembly, thrusting the voice coil assembly towards the voice coil magnet. At least one pair of latching members mounted to the voice coil assembly creates a permanent magnet circuit between the latching members and the voice coil magnet. The permanent magnet circuit maintains the position of the voice coil assembly relative to the voice coil magnet, even when power to the coil is removed. This latch can be released by applying a current in the coil or by applying an external, physical force to a member coupled to the voice coil assembly. | ||||||
| 202 | Method and apparatus for transfer of a critical load from one source to a back up source using magnetically latched relays | US11804168 | 2007-05-16 | US20080054722A1 | 2008-03-06 | David Phelps; Fred Tamjidi |
| An automatic transfer switch includes first and second magnetically latched relays that respectively connect first and second voltage sources to a critical load. The first and second relays are magnetically latched in their respective opened or closed positions by a permanent magnet so that no holding current is supplied to the relays after switching is completed. As such, no holding current is required for either relay in the non-transferred or the transferred state of the automatic transfer switch, which reduces heat generated by the relays which can lead to relay failure. A switching method uses the automatic transfer switch to switch voltage sources without requiring relay holding currents in either the non-transferred or transferred state. A method of reducing contact bounce is also disclosed. | ||||||
| 203 | Safety switch | US11489092 | 2006-07-19 | US20070018766A1 | 2007-01-25 | Julian Poyner |
| A safety switch for a safety circuit includes a moveable magnet located between a fixed contact and a fixed magnet. The safety switch includes a coil located adjacent the moveable magnet and arranged such that the coil pushes the moveable magnet towards the fixed contact so that the movable contact presses against the fixed contact when the coil is energised and so that the moveable contact moves away from the fixed contact when the coils are not energised. | ||||||
| 204 | Electrical switching device, relay and electrical apparatus comprising same | US10532969 | 2003-10-22 | US20060145794A1 | 2006-07-06 | Pierre Batteux |
| The electrical switching device comprises at least a first part comprising at least a first magnetizable element and a first contact zone associated with said first magnetizable element, and at least a second movable part comprising at least a second magnetic element and a second contact zone associated with said second magnetic element. The first or second magnetic element comprises at least one permanent magnetization part to keep the first electrical contact closed and to exert a contact pressure between the first and second contact zones when the movable part is in a first stable position. The electromagnetic relay and/or electrical apparatus comprise electrical contact inputs and control inputs connected to a switching device comprising electromagnetic control coils. | ||||||
| 205 | Resettable switching device | US10508351 | 2003-01-27 | US06975191B2 | 2005-12-13 | Patrick Ward |
| A resettable switching device, e.g. a relay, comprises a fixed contact (18) and a movable contact (28). A solenoid (12) is fixed relative to the fixed contact and a ferromagnetic plunger (20) carries the movable contact. A spring (24) biases the plunger away from the fixed contact so the device is normally open. When the device is set a further ferromagnetic element, e.g. a plunger (22), holds the first plunger (20) in a closed-contact position by magnetic attraction against the action of the spring (24). When a predetermined current condition exists in the solenoid the magnetic attraction between the element and plunger is reduced below the level necessary to hold the plunger so that the movable contact disengages the fixed contact. | ||||||
| 206 | Electromechanical momentary-contact switch having timed supplementary functions | US10873383 | 2004-06-21 | US20040263298A1 | 2004-12-30 | Egon Feisthammel; Dieter Rosmann |
| In order to simplify and reduce the production costs of a push-button switch, especially a push switch or a rocker switch, the switch has a time function, which is manually operated and can be reset by an electric pulse. The electromechanical rocker or push-button switch can be combined to form a device block switch with other rocker or push-button switches as usually used in exhauster hoods. As a result, time-controlled intensive and follow-up steps can be carried out. | ||||||
| 207 | Load disconnecting switch especially for use in motor vehicles | US10089484 | 2002-07-26 | US06677842B1 | 2004-01-13 | Martin Hanke; Bernd Saffian; Thomas Hähnel; Rainer Vogel; Karsten Pietsch |
| 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 (9). The armature (6) is biassed to an open position by an armature spring (10), so that the armature spring (10), when a defined operational excitation is exceeded, detaches the armature (6) from the core (7) of the magnet system, allowing said armature to open and thereby disconnecting a switching contact (15) and a fixed contact (16). The load-disconnecting switch can be switched on again by means of a spring clip (12) acting on said armature (6). | ||||||
| 208 | Electromagnetic actuator | US570513 | 1984-01-13 | US4581597A | 1986-04-08 | Omar C. Walley |
| An electromagnetic actuator is presented wherein a pair of permanent magnets are sandwiched between respective pairs of pole pieces. The pole pieces communicate with an armature to effect the state of actuation of the actuator. A pair of electromagnets, consisting of a wire-wound core, is maintained in close relationship to the pair of permanent magnets, a pole piece separating each permanent magnet from its associated electromagnet. When the electromagnets are not energized, the permanent magnets create a magnetic circuit which pulls the armature into a touch position with one pole piece of each permanent magnet. When the electromagnets are energized, a magnetic field is created which opposes and effectively cancels the magnetic fields of the permanent magnets, creating another magnetic circuit drawing the armature into a touch position with the other pole pieces. When the electromagnets are not energized, the armature is held in a first position by the permanent magnets alone. When energized, the holding power is achieved by the electromagnets, and the permanent magnets are effectively removed from the system. | ||||||
| 209 | Electromagnetic switch having a flexible permanent magnet armature | US3715695D | 1971-08-25 | US3715695A | 1973-02-06 | HOFMAN W |
| An electromagnetic switch provided with at least one magnetic circuit comprising a permanent magnet, the polarity of which is reversible by means of a magnetizing coil. The permanent magnet is provided with pole pieces which magnetically cooperate with a flat flexible magnet of a movable armature. The flexible magnet may be provided with soft-iron insertion pieces in the regions of the poles. Preferably, the coercive force Hc of the main magnet is smaller than 1,500 oersted and that of the armature magnet is greater than 2,000 oersted.
|
||||||
| 210 | Switching devices | US3675166D | 1970-09-16 | US3675166A | 1972-07-04 | MCCLOSKEY FENIMORE G; JORDAN WILLIAM ROBERT |
| A switching device of the electromechanical type including a push button actuator, a permanent magnet for keeping the actuator in the operated position, and an electromagnet which is energizable to neutralize the permanent magnet field and allow the actuator to return to its unoperated position.
|
||||||
| 211 | Latch relay motor structure | US3599133D | 1970-03-10 | US3599133A | 1971-08-10 | RICHERT WALTER J |
| 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 sacrificing core diameter and coil winding relationship.
|
||||||
| 212 | Roller-ribbon mechanical motion apparatus | US3592069D | 1968-04-03 | US3592069A | 1971-07-13 | WELCH THOMAS ROSS |
| A lever mechanism having a shiftable, frictionless fulcrum utilizing a roller-ribbon construction.
|
||||||
| 213 | Magnetic latch relay | US3497841D | 1967-08-30 | US3497841A | 1970-02-24 | WOOD ARTHUR E JR; MARVIN RALPH EDWARD |
| 214 | Relay having a permanent magnetic shunt circuit | US3475708D | 1967-05-24 | US3475708A | 1969-10-28 | SCHRECKENBERG KARL E; JESSEN JENS |
| 215 | Magnetic latch relay | US3470510D | 1967-11-07 | US3470510A | 1969-09-30 | RICHERT WALTER J |
| 216 | Binary relay utilizing armature inertia for shifting binary positions | US3444491D | 1966-12-05 | US3444491A | 1969-05-13 | WHITAKER RANALD O |
| 217 | Sensitive electro-magnetic tripping device of the re-setting type | US3441883D | 1967-03-17 | US3441883A | 1969-04-29 | ALLETRU JEAN |
| 218 | Electric bells of reduced size fixed on the supporting frame for setting in combination with common electric controlling devices under the wall plaster | US44471165 | 1965-04-01 | US3371340A | 1968-02-27 | ERMANNO BASSANI |
| 219 | Cylindrical electro-magnet | US42191564 | 1964-12-29 | US3284745A | 1966-11-08 | WOLFGANG GROBE |
| 220 | Polarized relay having a pushbutton resetting means | US43858165 | 1965-03-10 | US3281730A | 1966-10-25 | RENE MAROT MAURICE |
QQ群二维码
意见反馈
意见反馈