653results about "Contact materials" patented technology

The invention intends to provide a direct current load breaking contact point constitution that can make and break an electrical circuit under both direct current loads of direct current resistance load and direct current inductance load over a long period of time without causing problems such as ① the conduction defect due to the consumption of the contact point, ② the locking due to material transfer from one contact point to the other contact point, ③ the welding between the contact points, and ④ the abnormal arc continuation, and a direct current load breaking switching mechanism such as a relay, a switch and so on that has the contact point constitution. The direct current load breaking contact point constitution according to the invention comprises a movable contact point and a stationary contact point that face each other; wherein the movable contact point is made of AgSnO₂In₂O₃ alloy that contains at least Ag, 8 to 15% by weight in total of metal oxides including SnO₂ and In₂O₃, 6 to 10% by weight of SnO₂ and 1 to 5% by weight of In₂O₃; the stationary contact point is made of AgZnO alloy that contains at least Ag and 7 to 11% by weight of ZnO; and polarity of a movable side is (+) and that of a stationary side is (−).

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.

The pressure sensitive sensor includes a sheet base, an application-side and a receiving-side electrode provided on the sheet base and conducting coatings provided on the electrodes. The conductive electrodes have pressure-sensitive conductive ink containing conductive carbon black. Resistance between the application-side electrode and the receiving-side electrode changes by a contact area between the conductive coatings on the electrodes. The pressure-sensitive conductive ink has an enhanced strength as a resin and an enhanced effect of dispersion of the conductive carbon black by adding 30 to 70 parts by weight of silicon dioxide to 100 parts by weight of silicone elastomer component as a binder. The pressure-sensitive sensor has output stability and linearity at temperatures in a wide range from −40° C. to 85° C.

A switch comprises two substrates coated with conductive elements opposed to each other across a gap. At least one of the conductive elements comprises an intrinsically conductive polymer. The switch completes an electrical circuit when one of substrates is pressed toward the other of the substrates and the two conductive elements touch. The polarity applied to the intrinsically conductive polymer coating is, preferably, negative. The voltage applied to the electrical circuit, is, preferably, less than five volts; more preferably, the voltage applied to the electrical circuit is less than three volts; even more preferably, the voltage applied to the electrical circuit is less than one volt.

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.

The invention relates to a gas sensor and its method of manufacture.

Electrochemical gas sensors usually comprise an external housing, which acts as a reservoir for electrolyte; a wick to keep electrodes wetted with the electrolyte and external electrical terminals, for making electrical contact with the electrodes. Typically a gas permeable/microporous membrane has been used to seal a gas sensor in order to prevent leakage of electrolyte. A problem with existing sensors has been that there was a risk of electrolyte leaking through the membrane around the region where electrical connectors passed therethrough.

The present invention overcomes this by providing a method of urging conductive polymer through the membrane under controlled conditions of heat and pressure, thereby ensuring the integrity of the membrane remains in tact while defining an electrically/conductive pathway therethrough.

There is provided herein a sensor for use in connection with an electronic patient monitor, wherein the sensor preferably uses a linearly configured resistive ladder with spaced-apart resistors as a means of determining at least approximately a location of the patient on the sensor as well as an approximate length of the sensor which is compressed by the patient. By continuously determining both of these quantities over time it is possible to track the patient's movement and determine to what extent the patient needs to be manually turned and/or the extent to which a next-scheduled turn can be skipped.

A control member of the capacitive type for controlling at least one functional member in particular of a motor vehicle, the control member comprising a rigid support structure, at least one capacitive touch-sensitive detection cell located on or close to one of the faces of said support structure, and at least one control operating zone located on or close to the other face of said support structure in register with said capacitive touch-sensitive detection cell, wherein the control operating zone includes elastically deformable means.

The present invention belongs to the preparation techonlogy of electric alloy material. The electric contactor material consists of Ag 85-90 wt%, SnO2 5-20 wt% and blended metal oxide 0.5-8 wt%. The blended metal oxide is ZrO2, ZnO, TiO2, MnO2, WO3 or Sb2O3. The electric contactor material is prepared through coating oxide through chemical plating with plating liquid with dispersant, mixing the coated pwoder and silver powder, pressing, sintering, hot extruding, cold drawing or cold rolling, and making rivet or punched product. The present invention has the features of homogeneous oxide dispersion, good fusion welding resistance, high arc corrosion resistance and less electric transfer. The production process is simple, practical, low in cost and suitable for large scale production.

A tensioned touch panel includes a support structure having a substrate with a generally planer conductive surface disposed thereon and an insulating spacer generally about the periphery of the substrate. A pretensioned conductive member overlies the support structure. The spacer separates the conductive membrane and the conductive surface thereby to define an air gap therebetween. A conductive membrane is secured to the support structure under sufficient tension to inhibit slack from developing in the conductive membrane as a result of changes in environmental conditions. A method of assembling a tensioned touch panel is also provided.

The invention discloses an AgNi-base electrical contact material and a preparation method thereof and the electrical contact material comprises nickel, tungsten carbide and silver; wherein, the weight percent of nickel is not less than 5% and not more than 10%, the weight percent of tungsten carbide is not less than 0.1% and not more than 5% and the allowance is silver. In the invention, the distribution of nickel particles and the fiber orientation are considered; the manufacturing process adopts the processes of ball-milling, pressing, sintering and extruding. Owning to the high hardness, high strength and high melting point of tungsten carbide, tungsten carbide/silver bonding strength is better; comprised with the traditional AgNi electrical contact material, the AgNi electrical contact material prepared by the method of the invention has higher welding resistance and arc deterioration resistance and longer electrical life.

The invention relates to a slip electrical contact material for feeble current, the material is Ag-Cu-Ni-Re alloy, Ag-Cu-Zn-Ni-Re alloy or Ag-Cu-Pd-Zn-Ni-Re alloy, wherein Cu has a mass percentage of 0.1-10.0%, Ni has mass percentage of 0.01-0.6%, Re has a mass percentage of 0.01-0.5%, Zn has a mass percentage of 0.1-5.0%, Pd has a mass percentage of 0.1-105%,and the balance Ag. The invention solves the following problems of feeble current slip contact alloy under high: unstable contact resistance, low contact reliability, low hard and low wearing quality. The slip electrical contact material prepared by combining the material with copper or copper alloy has good quality and long life in a temperature scope ranging from -40 DEG C to 80 DEG C.

The invention provides a composite conducting strip which comprises a high-polymer matrix and one or two or more than two layers of communicated metal foils composited therein; and the total thickness of the composite conducting strip is 0.3-3mm. The surfaces of the metal foils are uneven and have protruding contacts which are exposed to one surface of the high-polymer matrix. The high-polymer matrix includes silicon rubber, nitrile rubber, ethylene propylene rubber, natural rubber, rubber and plastic materials, thermoplastic plastics, thermosetting plastics, fiber reinforced plastics and thelike and can contain 0.1-5% of coupling agent and other auxiliaries. The metal foils are nickel foils, copper foils, aluminum foils, stainless steel foils, gold foils, silver foils with holes or meshgrids. The composite conducting strip has the advantages of being high in composite strength, good in corrosion resistance and good in current conduction performance, can be divided into random shapes and specifications and can be widely used for manufacturing the conductive base materials of various buttons in an electronic industry.