Switch apparatus

  • US 4,246,452 A
  • Filed: 01/05/1979
  • Issued: 01/20/1981
  • Est. Priority Date: 01/05/1979
  • Status: Expired due to Term
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First Claim
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1. In a switch apparatus, the combination comprising:

  • a first substrate having a generally planar surfacd with a ring pattern thereon, said ring pattern including a plurality of generally identical fully conductive arcuate segments with intervening arcuate segments interposed therebetween, said intervening arcuate segments being formed from interleaved non-contacting pairs of conductors, the arc of said intervening segments being approximately one-half the arc of the fully conductive segments;

    a second substrate of a flexible material having a second generally identical ring pattern thereon;

    means for maintaining said second substrate in spaced proximate relation to said first substrate with said ring patterns in facing relation with one of said ring patterns offset circumferentially relative to the other by an angle generally equal to the arc of one of said intervening segments; and

    means for selectively urging any portion of said second ring pattern into conductive relation with the adjacent portion of the first ring pattern for providing a signal indicative of the portion so contacted.

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