181 |
Push-switch for vehicle and method of manufacturing the same |
US11051772 |
2005-02-04 |
US07397004B2 |
2008-07-08 |
Yoshiyuki Nakade; Hiroyuki Kosaka |
A push-switch for vehicle, and a method of manufacturing the same, including fixed contacts and movable contact brought into and out of contact in accordance with upward and downward movements of operating member, in which at least one of the contacts is provided on surfaces thereof with a plurality of fine projections and depressions produced by arcing discharges between the contacts or machining work. Contacts at a large number of points are attained by the provision of the plurality of fine projections and depressions, hence a switch capable of stable contact can be provided. |
182 |
Contact electrode for microdevices and etch method of manufacture |
US11546288 |
2006-10-12 |
US20080087530A1 |
2008-04-17 |
Alok Paranjpye; Douglas L. Thompson |
A contact electrode for a device is made using an etching process to etch the surface of the contact electrode to form a corrugated contact surface wherein the outer edges of at least one grain is recessed from the outer edges of adjacent grains and is recessed by at least about 0.05 μm from the contact plane. By having such a corrugated surface, the contact electrode is likely to contact another conductor with at least one pure metal grain. This etching treatment reduces contact resistance and contact resistance variability throughout many cycles of use of the contact electrode. |
183 |
Apparatus and method for providing a horn contact mechanism |
US11159078 |
2005-06-22 |
US20060208469A1 |
2006-09-21 |
Thomas Marotzke; Karsten Pietsch; Barry Worrell |
Exemplary embodiments of the present invention relate to a steering wheel arrangement for motor vehicles having a steering wheel, an airbag module held at the steering wheel and movable in the direction of the axis of the steering wheel, and an electrical contact system arranged between the steering wheel and the airbag module for the actuation of an electrical functional unit, in particular of a vehicle horn by a relative movement between the steering wheel and the air-bag module taking place in the direction of the steering wheel axis, where-in the contact system includes elongate extended electrical conductors which are attached to mutually confronting sides of the steering wheel and of the airbag module or only to the steering wheel or to the airbag module and extend in such a way that conductors spaced apart in the direction of the steering wheel axis cross at at least one contact position. |
184 |
Micro-electro-mechanical switch, and methods of making and using it |
US10914537 |
2004-08-09 |
US07002441B2 |
2006-02-21 |
Brandon W. Pillans; David I. Forehand |
A micro-electro-mechanical (MEMS) switch (10, 110) has an electrode (22, 122) covered by a dielectric layer (23, 123), and has a flexible conductive membrane (31, 131) which moves between positions spaced from and engaging the dielectric layer. At least one of the membrane and dielectric layer has a textured surface (138) that engages the other thereof in the actuated position. The textured surface reduces the area of physical contact through which electric charge from the membrane can tunnel into and become trapped within the dielectric layer. This reduces the amount of trapped charge that could act to latch the membrane in its actuated position, which in turn effects a significant increase in the operational lifetime of the switch. |
185 |
Multiple-contact woven electrical switches |
US10889542 |
2004-07-12 |
US20050045461A1 |
2005-03-03 |
Matthew Sweetland; James Moran; Nam Suh |
The present disclosure is directed to electrical switches that utilize conductors that are woven onto loading fibers and a mating conductor that has a contact mating surface. Each conductor has at least one contact point. The loading fibers are capable of delivering a contact force at each contact point of the conductors. Electrical connections are established between the contact points of conductors and the contact mating surface of the mating conductor when the conductor-loading fiber weave is engaged with the mating conductor and the electrical connections are terminated when the conductor-loading fiber weave is disengaged from the mating conductor. In one embodiment, the portion of the contact mating surface of the mating conductor where arcing between the conductors and the mating conductor is expected to occur is plated with a conductive arc-tolerant material, such as silver, for example. In another embodiments, the portions of the conductors where arcing is expected to occur are plated with a conductive arc-tolerant material. In an alternate embodiment, the conductors are made thicker where arcing between the conductors and the mating conductor is expected to occur. The contact mating surface of the mating conductor can include a non-conductive portion that assists in guiding the conductor-loading fiber weave when its being engaged and disengaged from the mating conductor. |
186 |
Contact spring |
US10808980 |
2004-03-25 |
US06855900B1 |
2005-02-15 |
Akimitsu Urushibata |
There is provided a contact spring in a small-sized push-button switch capable of lessening contact obstacle between contacts caused by fine dust, and reducing variation in load characteristics even if heat is applied thereto or the switch is repetitively operated. The contact spring in the switch for allowing a movable contact provided at an inner side of a movable contact spring to contact or break off the contact with an opposed fixed contact so as to render the movable contact and the fixed contact to be in one of an electrically on or off state, wherein multiple movable contacts are formed by protruding a material of the movable contact spring by a thickness of not more than two thirds of a thickness of the movable contact spring on a circumference about a central portion of the movable contact spring and positioned at an equal central angle relative to the center of the movable contact spring in a direction from an outside to an inner side of the movable contact spring by means of half-cut working while forming a peripheral edge of a protruded contact surface in a sharp blade-shape. |
187 |
Micro-electro-mechanical switch, and methods of making and using it |
US10914537 |
2004-08-09 |
US20050012577A1 |
2005-01-20 |
Brandon Pillans; David Forehand |
A micro-electro-mechanical (MEMS) switch (10, 110) has an electrode (22, 122) covered by a dielectric layer (23, 123), and has a flexible conductive membrane (31, 131) which moves between positions spaced from and engaging the dielectric layer. At least one of the membrane and dielectric layer has a textured surface (138) that engages the other thereof in the actuated position. The textured surface reduces the area of physical contact through which electric charge from the membrane can tunnel into and become trapped within the dielectric layer. This reduces the amount of trapped charge that could act to latch the membrane in its actuated position, which in turn effects a significant increase in the operational lifetime of the switch. |
188 |
Torsion spring for electro-mechanical switches and a cantilever-type RF micro-electromechanical switch incorporating the torsion spring |
US10844273 |
2004-05-11 |
US06842097B2 |
2005-01-11 |
Tsung-Yuan Hsu; Robert Loo; Adele Schmitz |
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 between the tines, and includes a conducting transmission line, at least a portion of which is exposed for electrical contact. The conducting transmission line has a length selected such that the exposed portion of the transmission line forms a circuit between the input and output of the micro-electro-mechanical switch when the micro-electro-mechanical switch is urged into a closed position, with the terminus portion rotating via the tines to form a conformal connection between the exposed portion of the conducting transmission line and the input and output of the switch, thus optimizing the electrical flow therebetween. The switch is also applied to MEMS devices. |
189 |
Lateral motion MEMS Switch |
US10006865 |
2001-12-04 |
US06798315B2 |
2004-09-28 |
Timothy M. Schaefer |
A micro-electrical-mechanical system (MEMS) switch. The switch includes a compliant spring that supports a contact shuttle for movement in a lateral direction generally parallel to the substrate and biases the contact shuttle to a normally open switch state position. A plurality of moving electrodes are coupled to the contact shuttle. A plurality of fixed electrodes are interleaved with the moving electrodes. The moving electrodes and the fixed electrodes have generally planar major surfaces perpendicular to the plane of the substrate. Electrostatic forces developed between the fixed and moving electrodes cause the contact shuttle to move to a closed switch state position in response to the application of an actuation voltage. The moving direction of the moving electrodes and the contact shuttle is along a longitudinal axis parallel to the substrate and perpendicular to the planar major surfaces of the electrodes. |
190 |
Micro-electro-mechanical switch, and methods of making and using it |
US10140658 |
2002-05-07 |
US06791441B2 |
2004-09-14 |
Brandon W. Pillans; David I. Forehand |
A micro-electro-mechanical (MEMS) switch (10, 110) has an electrode (22, 122) covered by a dielectric layer (23, 123), and has a flexible conductive membrane (31, 131) which moves between positions spaced from and engaging the dielectric layer. At least one of the membrane and dielectric layer has a textured surface (138) that engages the other thereof in the actuated position. The textured surface reduces the area of physical contact through which electric charge from the membrane can tunnel into and become trapped within the dielectric layer. This reduces the amount of trapped charge that could act to latch the membrane in its actuated position, which in turn effects a significant increase in the operational lifetime of the switch. |
191 |
Incomplete mechanical contacts for microwave switches |
US10319650 |
2002-12-16 |
US20040113714A1 |
2004-06-17 |
Regina
Kwiatkowski; Mihai
Vladimirescu; Terence
J.
Menezes |
A switch contact for use in a microwave switch. The contact comprises a probe contact member having a first contact region with a first surface, and a reed contact member having a second contact region with a second surface. The second surface is non-conformal with respect to the first surface for providing an incomplete mechanical contact when the contact members are in contact. |
192 |
One-piece semi-rigid electrical contact |
US10234211 |
2002-09-05 |
US06720511B2 |
2004-04-13 |
Robert Windebank |
An electrical contact includes a hollow tube having first and second end portions and a center portion; and a spring portion formed in a wall of the hollow tube. The spring portion may be located in the center portion of said hollow tube or in one of the first and second end portions of the hollow tube. The spring portion may be a helical spring portion and may include two helical portions wound in opposite directions. At least one of the first and second end portions may have a diameter that is less than a diameter of said center portion. At least one of the first and second end portions may have a hemispherical shape or closed end. The hollow tube may be of a metal such as stainless steel or may be a hollow tube coated with an electrically conductive material such as one of copper, silver, or gold. The contact may have a shoulder having a diameter which is greater than the diameter of at least one of the first and second end portions and said center portion of the tube and may be disposed between one of the first and second end portions and the center portion of the tube or in one of the first and second end portions or the center portion of the tube. |
193 |
Double-throw miniature electromagnetic microwave switches with latching mechanism |
US09917052 |
2001-07-30 |
US06593834B2 |
2003-07-15 |
Cindy Xing Qiu; Chu-Nong Qiu; Yi-Chi Shih |
Miniature double-throw electromagnetic microwave switches are disclosed in this invention. In one embodiment a switch comprising an input transmission line, a first movable cantilever with a first permanent magnetic film and connecting to a first output transmission line, a second movable cantilever with a second permanent magnetic film and connecting to a second output transmission line is provided. In another embodiment, a latching function is provided to a miniature double-throw electromagnetic microwave switch by adding a permanent magnetic film to said input transmission line. In yet another embodiment, a third non-movable cantilever with a permanent magnetic film on top is added to said miniature double-throw microwave latching switch to enhance the latching mechanism. In yet another embodiment, a miniature double-throw microwave switch is disclosed where at least one recess contact region for each movable cantilever is provided to reduce the effects of unwanted particles and to reduce the contact resistance by increasing contact pressure. In still another embodiment, a miniature double-throw microwave switch having non-symmetrical movable cantilevers and transmission lines, with tapered or rounded corners is given. This is done in order to minimize the reflection and losses of propagating microwaves or millimeter waves. |
194 |
Torsion spring for electro-mechanical switches and a cantilever-type RF micro-electromechanical switch incorporating the torsion spring |
US10097632 |
2002-03-12 |
US20020171518A1 |
2002-11-21 |
Tsung-Yuan
Hsu; Robert
Loo; Adele
Schmitz |
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 between the tines, and includes a conducting transmission line, at least a portion of which is exposed for electrical contact. The conducting transmission line has a length selected such that the exposed portion of the transmission line forms a circuit between the input and output of the micro-electro-mechanical switch when the micro-electro-mechanical switch is urged into a closed position, with the terminus portion rotating via the tines to form a conformal connection between the exposed portion of the conducting transmission line and the input and output of the switch, thus optimizing the electrical flow therebetween. The switch is also applied to MEMS devices. |
195 |
Split and angled contacts |
US09503393 |
2000-02-14 |
US06429759B1 |
2002-08-06 |
Daniel Schlitz; Shridhar Nath |
A contact arrangement for a circuit breaker is disclosed. The movable and the stationary contacts within the breaker are each split and angled such that one contact forms a female V cross sectional shape and the other forms a mating male V cross sectional shape. Together, these contacts split the current in a manner which reduces the popping force. |
196 |
Management of contact spots between an electrical brush and substrate |
US09839404 |
2001-04-23 |
US20020060506A1 |
2002-05-23 |
Doris
Kuhlmann-Wilsdorf |
Devices for the management of contact spots, partly consisting of surface plating, partly of surface polishing and partly of substrate surface profiling in the form of parallel grooves stretched out in the direction of sliding and/or of isolated asperities. The management of the contact spots is designed to generate, at electrical brush interfaces, a large number of contact spots of pre-determined shapes and distribution that promote low electrical contact resistance and long wear life. Preferably, the substrate is coated with a hard, highly conductive coating that is resistant to wear and chemical attack. The invention is similarly applicable also to electrical switches wherein it will assure reduction of interfacial resistance as well as of sticking forces. Finally, it may also be used for the efficient transfer of heat across interfaces. |
197 |
Low current high temperature switch contacts |
US405627 |
1999-09-24 |
US6156982A |
2000-12-05 |
Arthur Wayne Dawson |
A low ampere mechanical switch has a contact design creating a line of contact between the moveable and stationary contacts. The stationary contacts are stainless steel and the moveable contact is Inconel.TM.. Both contacts have a thin plating of gold alloy to provide for good mechanical strength at high temperature with a natural lubricating ability. The contact physical design provides good wiping action and mechanical contact while preventing troughing. |
198 |
Electrical component containing magnetic particles |
US868390 |
1997-06-03 |
US5843567A |
1998-12-01 |
Joseph A. Swift; Ronald F. Ziolo; Stanley J. Wallace |
There is disclosed an electrical component having an axial direction and two ends for making electrical contact with another component comprising a plurality of electrically conductive fibers in a matrix, the plurality of the fibers being oriented in the matrix in a direction substantially parallel in the axial direction of the component and being continuous from one end of the component to the other end to provide a plurality of electrical point contacts at each end of the component, wherein the component further includes magnetic particles. |
199 |
Electrical interconnect using particle enhanced joining of metal surfaces |
US749376 |
1996-11-06 |
US5835359A |
1998-11-10 |
Louis DiFrancesco |
A method and apparatus for electrically interconnecting various electronic elements, including circuit components, assemblies, and subassemblies. A particle enhanced material metal contact layer, having a surface, formed on the electronic elements, includes particles of greater hardness disposed on and/or within the metal contact layer, which particles form protuberances that concentrate stress when said contact surface is brought into contact with an opposing surface under pressure, to thereby penetrate the opposing surface and form a metal matrix between the two surfaces. The invention includes preferred and alternative embodiments incorporating particle enhanced material that provide a semiconductor test array which may be patterned as desired to receive an integrated circuit die and/or packaged components to facilitate integrated circuit and packaged electronic component testing; a probing device for testing integrated circuit die in situ on a semiconductor wafer; connectors for coupling discontinuous circuit element substrates; an interposer for interconnecting conventional components, circuit boards, and assemblies; and connectors for single and multiple layer circuit boards. |
200 |
Electrical interconnect using particle enhanced joining of metal surfaces |
US422445 |
1995-04-12 |
US5642055A |
1997-06-24 |
Louis Difrancesco |
A method and apparatus for electrically interconnecting various electronic elements, including circuit components, assemblies, and subassemblies. A particle enhanced material metal contact layer, having a surface, formed on the electronic elements, includes particles of greater hardness disposed on and/or within the metal contact layer, which particles form protuberances that concentrate stress when said contact surface is brought into contact with an opposing surface under pressure, to thereby penetrate the opposing surface and form a metal matrix between the two surfaces. The invention includes preferred and alternative embodiments incorporating particle enhanced material that provide a semiconductor test array which may be patterned as desired to receive an integrated circuit die and/or packaged components to facilitate integrated circuit and packaged electronic component testing; a probing device for testing integrated circuit die in situ on a semiconductor wafer; connectors for coupling discontinuous circuit element substrates; an interposer for interconnecting conventional components, circuit boards, and assemblies; and connectors for single and multiple layer circuit boards. |