Patents Assigned to The Whitacre-Greer Fireproofing Company
  • Hot top with sealing angle bar
    Patent number: 4809946
    Abstract: The hot top utilizes an integral angle iron structure connected to the hot top for avoiding seal leaks of molten metal through the space between the bottom portion of the hot top and the top of the mold wall. By providing the angle iron structure with a plurality of holes which allow the cooling ingot metal to tear out portions of the structure as the ingot contracts, such structure also allows the cooling ingot to move downwardly in the mold and to separate from the structure, thereby preventing hanger cracks from occurring.
    Type: Grant
    Filed: October 30, 1986
    Date of Patent: March 7, 1989
    Assignee: The Whitacre-Greer Fireproofing Company
    Inventor: Lynn A. Morrison