Having Punch Means Patents (Class 470/148)
Forming cotter-slot (Class 470/149)
  • Fastener having recess useable with multiple drivers and method of manufacture
    Patent number: 6852037
    Abstract: A fastener is described having a head formed with a recess which accommodates a square head driver, symmetrical drivers, such as PHILLIPS™ style drivers, asymmetrical style cross head drivers, such as POZIDRIV® style drivers, and combination square and cross drivers without compromising performance of the drivers.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: February 8, 2005
    Assignee: Phillips Screw Company
    Inventor: Barry J. Hughes