Patents Assigned to Kirchner Corporation
  • Hollow post cylindrical sprue casting method
    Patent number: 5044419
    Abstract: A method of forming a hollow cylindrical tube from wax such that a taper exists from one end to the other resulting in different wall thicknesses at either end of the tube, mounting said tube in a vertical position onto a semi-flexible base such that the end of the tube with the greatest wall thickness is in contact with the base, and attaching individual jewelry patterns onto the outside surface of the tube prior to encapsulation by an investment, which is one of the steps in the lost wax casting process of jewelry manufacture.
    Type: Grant
    Filed: March 7, 1990
    Date of Patent: September 3, 1991
    Assignee: Kirchner Corporation
    Inventor: Maximillian Ware
  • Jewelry article
    Patent number: D575185
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: August 19, 2008
    Assignee: Kirchner Corporation
    Inventor: Mark Olsen