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Hinge structures

  • US 5,537,716 A
  • Filed: 01/24/1994
  • Issued: 07/23/1996
  • Est. Priority Date: 01/24/1994
  • Status: Expired due to Fees
First Claim
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1. A hinge structure for a pivotable picture frame consisting of an axial member used as a fastener and a pair of axial member supports to use as adjacent frame members, said hinge structure comprising a pivotal portion provided at a base edge of each of a pair of axial blades of the axial member;

  • a disengaging protrusion provided at a tip edge of each of the axial blades;

    a pivotal rotation guide with the pivotal portion as a center of rotation extending from the axial blades near each of the disengaging protrusions;

    an engaging extension as a back face of the fastener provided at tip edges of the pivotal rotation guides, said engaging extension including a pair of fastener depth portions extending toward a back face of an exhibited object and a fastener contact face provided in parallel to the engaging extension and in contact with the back face of the exhibited object;

    an opening formed in each of the axial member supports;

    a pivotal portion rest to be engaged with a corresponding pivotal portion, said pivotal portion rest formed at one end on one side face of the opening;

    a curved retainer for keeping the surface of the exhibited object pressed and fixed between said curved retainer and said engaging extension, said curved retainer formed at an other end on said one side face of the opening;

    a projected engagement rest to be engaged with a corresponding disengaging protrusion or the engaging extension by the pivotal rotation of the axial member, said projected engagement formed on an other side face opposite to said one side face;

    a curvature formed along a circumference of a corresponding pivotal rotation guide from the engagement rest to said one side face with the pivotal portion rest formed; and

    a pair of lock members pivotally or slidably provided in the axial member for locking such that a locking claw protruded from the main body of each of the locking members engages with a portion immediately below a corresponding engagement rest.

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