Patents Assigned to Pheoll Manufacturing Company, Inc.
  • Self-penetrating screw
    Patent number: 4844676
    Abstract: A self-penetrating screw for penetrating sheet metal and then bolting a panel or other member to the penetrated sheet. The screw is hardened and has a penetrating point, a bolt-like shank and a head. The bolt-like shank is provided with machine screw threads and the tapered penetrating point has space threads with a pitch substantially greater, and preferably twice, the pitch of the machine screw thread.
    Type: Grant
    Filed: October 23, 1986
    Date of Patent: July 4, 1989
    Assignee: Pheoll Manufacturing Company, Inc.
    Inventor: Stanley C. Adamek