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WO/2005/001868A1 |
The invention relates to a monopolar or multipolar switching electrical device, comprising, for each pole, a set of polar contacts (22, 32) that are capable of coming into contact with a polar conductor bridge (15) for switching an elect...
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WO/2004/095489A1 |
An electrical relay comprising having two wettable electrical contacts (118, 120) supporting a conducting liquid (126). A non-wettable switch finger (114) is moved between first and second positions between the electrical contacts by act...
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WO/2004/095523A2 |
Fluid-based switcnes are disclosed. In one embodiment, the switch (400) comprises first (100) and second (402) mated substrates defining therebetween at least portions of a number of cavities, the first substrate defining a plurality of ...
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WO/2004/095483A2 |
An electrical relay having two wettable electrical contacts (118 and 120), each supporting a conducting liquid (126). A wettable switch finger (114) is moved from a non-deflected position to first and second positions by action of an act...
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WO/2004/063090A2 |
The present invention provides a bistable actuator device formed by thin films for generating mechanical motion in response to an electronic control signal. The present invention combines a thin film bistable mechanical member (1) under ...
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WO/2004/051684A1 |
A microactuator of a cantilever design with an air gap between an electromagnetic coil wound around a permanent magnet and the end of the cantilever wherein the cantilever beam incorporates a piezo electric member. The deflection the bea...
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WO/2004/047190A2 |
A radio frequency (RF) micro electro-mechanical system (MEMS) device and method of making same are provided, the device including an RF circuit substrate (24) and an RF conducting path (32, 34) disposed on the RF circuit substrate, a pie...
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WO/2004/040611A1 |
In a switching apparatus having a pair of electrodes comprising a first electrode and a third electrode which are provided with a piezoelectric element between and a pair of electrodes comprising a second electrode and a fourth electrode...
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WO/2004/038819A2 |
A piezoelectric switch for tunable electronic components comprises piezoelectric layers (110, 111), metal electrodes (112, 113, 114, 115) alternated with the layers and contact pads.(119, 120) Cross voltages are applied to the electrodes...
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WO/2004/019362A1 |
A micro-electromechanical (MEM) RF switch provided with a deflectable membrane (60) activates a switch contact or plunger (40). The membrane incorporates interdigitated metal electrodes (70) which cause a stress gradient in the membrane ...
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WO/2004/015728A1 |
This invention is a new type of relay that incorporates the functional combination of multimorph actuator elements with electrostatic state holding mechanisms in the development of a micromachined switching device. This combination of el...
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WO/2004/015729A1 |
This invention is a new type of relay that incorporates the functional combination of multimorph actuator elements with electrostatic state holding mechanisms in the development of a micromachined switching device. This combination of el...
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WO/2004/011367A1 |
An operation fluid movement device (10) is a laminated body of ceramic sheets (11a-11c) that form a flow path (13). The ceramic sheet (11c) forms a film, and a piezoelectric/electrostrictive film (12) is integrally formed on the upper fa...
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WO/2004/006295A2 |
A MEMS switch assembly comprising a substrate (110) and a resilient switching member (106) is provided. The resilient switching member comprises a transverse torsion member (126) having a flexible portion, and a leaf spring and cantileve...
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WO/2003/107372A1 |
A micro-electromechanical switch (MEMS) having a deformable elastomeric element (1) which exhibits a large change in conductivity with a small amount of displacement. The deformable elastomeric element (1) is displaced by an electrostati...
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WO/2003/079387A1 |
The invention relates to an electrical switch device in which each power pole comprises a mobile bridge (30) which is equipped with at least one mobile contact (31a, 31b) which co-operates with at least one fixed contact (41a, 41b) of th...
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WO/2003/044817A1 |
A circuit switching switch (60) having a drive device (10), comprising ceramic pumps (18a) and (18b), wherein a conductive movable body (110) is moved in a flow passage (13a) by alternately pressurizing and depressurizing, by the pumps, ...
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WO/2002/073691A1 |
An in-situ cap for an integrated circuit device (10) such as a micromachined device and a method of making such a cap (40) by fabricating an integrated circuit element (122) on a substrate (14) ; forming a support layer (124) over the in...
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WO/2002/073644A1 |
A micromachined electrical switch comprising: a plurality of electrical paths (25) each of which has a break (A; B; C) therein; a plurality of moveable electrical contacts (19) each of which includes piezoelectric material (32) which cha...
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WO/2002/073645A1 |
A torsion spring for an electro-mechanical switch is presented. The torsion spring comprises a set of tines including at least one tine extending from the free end of the armature of a switch. A terminus portion is rotatably suspended be...
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WO/2002/039472A1 |
A MEM relay device includes a flexible multi-point contact system with a self-aligning structure. The inventive relay includes a first signal contact electrically connected to a first set of flexible electrically conductive signal teeth ...
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WO/2002/029841A1 |
A low voltage contactor for low voltage power distribution applications, which comprises at least a piezoelectric motor assembly for coupling/decoupling a movable contact with a fixed contact during the closing/opening operation of the l...
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WO/2002/029364A1 |
The invention relates to a sensor device, especially a threshold value sensor device comprising a sensor system for detecting an external measuring quantity, a switching system being provided for connecting a load circuit. Until now, the...
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WO/2002/007294A1 |
An inverter circuit (Figure 2) is provided using a voltage converter having multiple layers of piezolectric ceramic. More specifically, the present invention provides an inverter circuit for a Cold Cathode Fluorescent Lamp (CCFL) (200) i...
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WO/2002/007178A1 |
A self-powered switching device using a prestressed flextensional electrocative member (12) generates a signal for activation of a latching relay (90). The electroactive member (12) has a piezoelectric element with a concave face that ma...
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WO/2001/013457A1 |
An electrical switch (40) comprises: electrical contacts (18, 20, 24) and an actuator (26) for moving the contacts relative to each other between an open state and a closed state. The actuator (26) includes a deformable member (14), pref...
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WO/1999/062090A1 |
An over-centre clamping mechanism is disclosed having a pivot guide to guide the pivot of one of the link arm members of the mechanism which comprises a piezo-electric actuator. The actuator is arranged to withdraw the pivot guide from t...
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WO/1999/040596A1 |
A piezoelectric relay has a flexural transducer (2) retained on one side only and with a free end that can be switched between two end positions. A bridge element (4) with end sections (4a, 4b) engaged between forked pole ends (6, 7) of ...
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WO/1999/038220A1 |
The present invention relates to a piezoelectric actuator (1) with a reduced crack tendency in comparison with prior art and increased bridging opportunities with regard to said cracks. The inventive piezoelectric actuator has a pluralit...
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WO/1999/027414A1 |
A disposable picture display device having a suitable substrate which carries a plurality of colour cells. Each colour cell is configured such as to exhibit a change in its external colour and/or to emit electromagnetic energy at least i...
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WO/1998/040917A1 |
An electrically controlled actuator comprises at least two co-planar blades formed by a U-shaped pressing from a sheet of material. The end of one blade (60) is used as a mounting for the actuator and the end of the other blade (85) is u...
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WO/1998/024130A1 |
There are provided an actuator part main body (26) which has an antiferroelectric film (22) and a pair of electrodes (24a and 24b) formed on one major face (surface) of the antiferroelectric film (33), a vibratory part (18) which support...
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WO/1998/011586A1 |
The invention concerns a switching device comprising a membrane made of a material (M�1?) supported by a substrate made of a material (M�2?), the material (M�1?) being constrained with respect to the material (M�2?) at the membra...
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WO/1998/009312A1 |
An extremely small micro-relay having such a mechanical contact mechanism that it becomes smaller in resistance when the contact is turned on and has an excellent vibration resistance, frequency characteristic, and insultating property i...
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WO/1997/022154A1 |
A metal-ceramic device includes an electroactive ceramic substrate (34) having a pair of opposed planar surfaces and a thickness aspect. Conductive electrodes sandwich the ceramic substrate and a first sheet metal cap (30) having a conca...
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WO/1996/001488A1 |
A detent mechanism comprising a support member having a fixed seating member comprising opposite sides; a first spring for exerting a first spring force, disposed between one side of the fixed seating member and a first sliding member, f...
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WO/1996/001487A1 |
The invention provides a controllable detent or latch and release mechanism the stiffness of which can be altered by the application of for instance an electric field. The stiffness of the device overall is a combination of a mechanical ...
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WO/1996/001484A1 |
An electrical switching device arranged to display the status of said device on a flag significantly larger than the relative movements of any components of said device. In an envisaged embodiment of the invention, this is achieved by ar...
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WO/1996/001489A1 |
This invention relates to a push button residual current device wherein a single pusch button is used to perform setting and testing operations on the device. More specifically, over the first part of the down stroke of the push button a...
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WO/1994/019834A1 |
Monolithic, internally asymmetrically stress biased electrically active ceramic devices and a method for making same is disclosed. The first step in the method of the present invention is to fabricate a ceramic element having first and s...
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WO/1994/019819A1 |
A micromechanical relay has a tongue-shaped armature (53) etched out of an armature substrate (52). The armature (53) is elastically linked to the armature substrate and forms an electrostatic actuator together with the base electrode (5...
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WO/1989/007345A1 |
A piezoelectric relay element (322) is provided that engages contacts (335)(337). The relay element is constructed from a bimorph bender element (323) having a top electrode (332), a bottom electrode (334) and a center electrode (339). T...
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WO/1989/002659A1 |
A piezoelectric relay (40) requiring less piezoelectric material than the conventional piezoelectric relays is disclosed. The relay differs from conventional relays in that the contacts are touching with essentially no force applied betw...
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WO/1988/001438A1 |
A switch (20) wherein a piezoelectric bimorph element (22) is used to provide many separately controllable, closely spaced switchable contacts. The element includes at least two oppositely extending fingers (22a) connected by a common sp...
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WO/1982/002282A1 |
Piezo-electric relay in which a bimorph is used as a flexing element. First, second and third relay contacts (14), (14') and (14') are disposed coplanar with the third relay contact sandwiched between the first and the second relay conta...
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JP6950613B2 |
A magnetically actuated MEMS switch 100 includes a first magnetic core portion 120, a first signal line 15, a first contact point 16, a second magnetic core portion 220, a second signal line 25, a second contact point 26, and a first coi...
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JP6747786B2 |
To provide a MEMS device with high adhesion between a transmission line and an insulator layer, a MEMS switch, and a manufacturing method of the same.Between a high frequency line 21 and an insulator layer 24, a thin film adhesion layer ...
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JP6705351B2 |
To provide a MEMS switch capable of reducing a period until the MEMS switch is in a stable ON state while reducing power consumption, and an electronic apparatus including the same.A MEMS switch includes a first terminal (an end of a fir...
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JP6617480B2 |
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JP6601071B2 |
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