Patents Assigned to Heiwado Boueki Kabushiki Kaisha
  • Clasp for personal ornaments
    Patent number: 4712279
    Abstract: An improvement in a clasp for personal ornaments comprising a hook-shaped main body and a closing piece biased by means of a spring so as to close an opening thereof, the closing piece having one end to serve as a closing portion and the other end serving as an operating portion for the closing piece. The closing piece is provided at its base portion with an engaging portion and a locking member which engages the engaging portion at a position where the closing piece is pushed opened to maintain that position.
    Type: Grant
    Filed: September 16, 1986
    Date of Patent: December 15, 1987
    Assignee: Heiwado Boueki Kabushiki Kaisha
    Inventor: Mamoru Hiraishi