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Dust-and-water proof casing

  • US 8,164,899 B2
  • Filed: 04/13/2010
  • Issued: 04/24/2012
  • Est. Priority Date: 04/17/2009
  • Status: Active Grant
First Claim
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1. A casing comprising two casing members, one of which is fittable to the other casing member to form the casing, wherein a dust-and-water proof structure provided at a fitting portion comprises:

  • a groove formed continuously along periphery of a dust-and-water proof area of the one casing member;

    an elongated protrusion formed at the position to be inserted in the groove when the two casing members are fitted, said elongated protrusion having a width smaller than the groove width; and

    spherical elastic bodies each having the same diameter as the groove width, which are inserted and continuously arranged in the groove without gaps therebetween.

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