Abstract:
An electrical switching apparatus (2;50;90;100) includes a ferromagnetic frame (8) having first (110) and opposite second (112) portions, a ferromagnetic core (33) disposed therebetween, a permanent magnet (12) disposed on the first portion, a first tapered portion (113) on the opposite second portion; a coil (4) disposed about the core; and a ferromagnetic or magnetic armature (10) including a first portion (114), an opposite second portion (116) and a pivot portion (118) pivotally disposed on the core between the portions of the armature. The armature opposite second portion has a complementary second tapered portion (38) therein. In a first armature position, the armature first portion is magnetically attracted by the permanent magnet and the first and second tapered portions are moved apart with the coil de-energized. In a second armature position, the armature opposite second portion is magnetically attracted by the opposite second portion of the frame and the first tapered portion is moved into the second tapered portion with the coil energized.
Abstract:
Bistabiles Kleinrelais großer Leistung, aufweisend ein Isolierstoffgehäuses mit einer ersten Gehäusekammer (1b), in der eine einphasige Kontaktbaugruppe (4) mit zwei Stromschienen (8a, 8b) und einer Kontaktfeder (13) angeordnet ist, wobei die Kontaktfeder (13) mit einem Schenkelende fest an eine der Stromschienen (8a) angeschlossen ist und mit ihrem anderen freien mindestens einen beweglichen Kontakt (20) tragenden Schenkelende auf mindestens ein Festkontakt (21) arbeitet, der auf der zweiten Stromschiene (8b) sitzt, und wobei in einer zweiten Gehäusekammer (1a) eine bistabile magnetische Aktorbaugruppe (3) mit einem verschwenkbaren Anker (11) angeordnet ist, welcher über eine im Gehäuse angeordnete Abtriebseinrichtung (6; 23) die Kontaktfeder (13) auslenkt, um einen Stromkreis über die Stromschienen (8a, 8b) zu schließen oder zu unterbrechen, sind die Kontaktbaugruppe (4) und die Aktorbaugruppe (3) in einer oder in zwei Ebenen im Isolierstoffgehäuse angeordnet, weist die Kontaktbaugruppe (4) eine zu einer elektrodynamischen Stromschleife U-förmig gebogene mehrlagige Kontaktfeder (13) auf und weist die Aktorbaugruppe (3) ein einteiliges U-förmiges Joch (14) mit mindestens einer Erregerwicklung (17) je Jochschenkel sowie einen von einem flachen Permanentmagnet (15) getragenen Jochmittelschenkel (16) auf, auf dem ein leicht V-förmig ausgeformter Wippanker (11 ) gelagert ist.
Abstract:
An electromagnetic relay enables current to pass through switch termini and comprises a coil assembly, a rotor or bridge assembly, and a switch assembly. The coil assembly comprises a coil and a C-shaped core. The coil is wound round a coil axis extending through the core. The core comprises core termini parallel to the coil axis. The bridge assembly comprises a bridge and an actuator. The bridge comprises medial, lateral, and transverse field pathways. The actuator extends laterally from the lateral field pathway. The core termini are coplanar with the axis of rotation and received intermediate the medial and lateral field pathways. The actuator is cooperable with the switch assembly. The coil creates a magnetic field directable through the bridge assembly via the core termini for imparting bridge rotation about the axis of rotation. The bridge rotation displaces the actuator for opening and closing the switch assembly.
Abstract:
This invention relates to reed switches, and more particularly to micro-miniaturized reed switches and batch microfabrication techniques used to fabricate micro-miniaturized reed switches. The present invention can provide miniaturized reed switches with more consistent operating parameters, and that can be produced more efficiently than conventional reed switches. The present invention can also provide methods of making miniaturized reed switches using microfabrication techniques. The present invention can use lithographic- based fabrication to enable monolithic construction of a reed switch. Microlithography can repeatedly form micrometer dimensions with tight tolerances over large arrays of devices which, if the patterns are translated into materials appropriate for electromechanical devices, can provide for repeatable and consistent electromechanical operation. For example, tight dimensional control of the gap between two reeds in a reed switch or a reed and a fixed contact can provide consistency of performance between reed switches.
Abstract:
Micro-electro-mechanical system (MEMS) variable capacitors and actuation components and related methods are provided. A MEMS variable capacitor can include first and second feed lines extending substantially parallel to one another. Further, MEMS variable capacitors can include first and second capacitive plates being spaced apart from the first and second feed lines. The first and second capacitive plates can be separately movable with respect to at least one of the first and second feed lines for varying the capacitance between the first and second feed lines over a predetermined capacitance range.
Abstract:
A system for protecting against unplanned state changes of a magnetic latching rely (100) includes logic switching logic circuit (101, 105) for controlling a driver circuit (103) that works to supply a drive voltage to a magnetic latching relay (109). The switching logic circuits (101, 105) work to detect any unplanned state changes that may occur due to vibration or the like of the magnetic latching relay (109). The invention acts to switch the magnetic latching relay (109) back to a desired state after this state change has been detected in a two-way radio transceiver or other electronic device.
Abstract:
MEMS switches of varying configurations provide individu-ally acutatable contacts. The MEMS switches are sealed by an improved anodic bonding technique.
Abstract:
A MEM's reed switch array is provided having a first switch having a sensitivity causing the first switch to open or close due to a magnetic flux, and a second switch of lesser sensitivity than the first switch causing the second switch to open or close due to a magnetic flux. The first switch can be parallel to the second switch, or the first switch can be proximate to the second switch so that a center line of the first switch is coaxial to a center line of the second switch. Further, a security device for residential and/or commercial use is provided, having a magnet housing having a magnet, a switch housing having a MEM's reed switch array with a first switch and a second switch, and a gap between the magnet housing and the switch housing.
Abstract:
The present invention provides a switch suitable for efficient microfabrication. The switch elements are disposed in several layers. Various embodiments provide various switching capabilities and operational characteristics. The switches can be protected by suitable packaging, and can be efficiently fabricated in groups or arrays.
Abstract:
L'actionneur comporte une culasse externe (10) fixe, un noyau mobile (30) comprenant un fût central (39) s'étendant le long d'un axe longitudinal (X), une bobine d'excitation fixe (20) entourant le fût central (39) et un nombre N d'ensembles magnétiques (23,43) fixes régulièrement répartis autour de l'axe longitudinal (X). Au voisinage de chaque extrémité du fût central (39), le noyau (30) comporte un nombre N de surfaces polaires magnétiques (33,34) s'étendant transversalement à l'axe (X). Le noyau (30) est mobile en translation (T) selon l'axe (X) sous l'action d'un courant circulant dans la bobine (20) pour entraîner des contacts mobiles de l'appareil interrupteur et le noyau (30) est mobile en rotation (R) d'environ 1/2N tour autour de l'axe (X), sans entraîner les contacts mobiles.