Patents Assigned to Ulrich Copper, Inc.
  • Method and apparatus for drawing open-sided channel members
    Patent number: 5156036
    Abstract: Method and apparatus for minimizing or eliminating die breakage when performing a drawing operation on an open-sided channel member. A drawing die has an insert portion that includes a discrete element mounted for transverse movement with respect to the drawing direction. During a drawing operation, the discrete element is allowed to move transversely with respect to the remainder of the drawing die in response to variations in the drawing force transmitted to the discrete element through the channel member being drawn.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: October 20, 1992
    Assignee: Ulrich Copper, Inc.
    Inventor: Gordon J. Michaels