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297results about "Contact forms" patented technology

Multiple-contact woven electrical switches

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.
Owner:METHODE ELETRONICS INC

Keypad device

A keypad device for a mobile telephone or other device utilizing a keypad or keyboard is comprised of a flexible substrate and a keypad cover. The flexible substrate includes a plurality of keys affixed to the surface as well as a plurality first conductive strips associated with each key. The keypad cover is attached to the flexible substrate. The keypad cover typically includes holes that permit the plurality of keys to protrude through the keypad cover. In addition, the keypad cover further includes a plurality of second conductive strips that selectively contact a corresponding first conductive strip on the flexible substrate. The plurality of first conductive strips is coupled to ground and the plurality of second conductive strips is coupled to logic circuitry. Or, in another embodiment, both sets of conductive strips are coupled with the logic circuitry. The default position of the keypad device has each of the first conductive strips in contact with each of the corresponding second conductive strips. This creates a short circuit condition that prevents key signals from being received by the logic circuitry. When a particular key is depressed to the point where the first conductive strip associated with that particular key is separated from the second conductive strip corresponding to the first conductive strip, the short circuit condition is removed. This allows a signal to be transmitted to and processed by the logic circuitry indicating that a particular key has been selected.
Owner:SNAPTRACK
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