Patents Assigned to PHILLIPS SCREW COMPANY, INC.
  • SPIRAL DRIVE FASTENER WITH FRICTION ENGAGEABLE SURFACE
    Publication number: 20090074536
    Abstract: Interference surfaces are constructed on inner transition surfaces between wings of a fastener having a spiral recess. A portion of the transition surface is tapered to provide the interference. A standard driver for a spiral recess will engage the interference surface to create a “stick fit” engagement. The punch is formed using a wire EDM operation to construct tapered surfaces within the die cavity of a hob. The hob is machined down to obtain the desired depth, which is measured up from a gage spot indicative of the sticking point.
    Type: Application
    Filed: November 20, 2008
    Publication date: March 19, 2009
    Applicant: Phillips Screw Company, Inc.
    Inventor: Gary Dilling
  • SPIRAL DRIVE FASTENER WITH STICK FIT SURFACE AND METHOD OF MANUFACTURE
    Publication number: 20070269289
    Abstract: Interference surfaces are constructed on inner transition surfaces between wings of a fastener having a spiral recess. A portion of the transition surface is tapered to provide the interference. A standard driver for a spiral recess will engage the interference surface to create a “stick fit” engagement. The punch is formed using a wire EDM operation to construct tapered surfaces within the die cavity of a hob. The hob is machined down to obtain the desired depth, which is measured up from a gage spot indicative of the sticking point.
    Type: Application
    Filed: August 2, 2007
    Publication date: November 22, 2007
    Applicant: PHILLIPS SCREW COMPANY, INC.
    Inventor: Gary Dilling