Patents Assigned to Polygon, Inc.
  • Socket head tool
    Patent number: 4084454
    Abstract: This invention relates to a new tool for loosening screw parts or like devices which are frozen in screw threaded connection in a metal work part, for example. The new tool includes hollow, cup-shaped socket including a thick solid upper end head portion and an integral hollow skirt portion for fitting over an exposed head of a frozen screw device, a short axial extent of the exposed head of the device being interlocked with the skirt when an inner rim portion on the skirt is in locked engagement with the work-part.
    Type: Grant
    Filed: January 8, 1976
    Date of Patent: April 18, 1978
    Assignee: Polygon, Inc.
    Inventor: Leon E. Day