Patents by Inventor Paul R. Lathom

Paul R. Lathom has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Thread swaging screw
    Patent number: 3935785
    Abstract: A thread swaging screw of polygonal cross-section having a number of turns on a straight shank portion and at least one sizing turn between the shank portion and the tapered work entering end portion of the screw. The sizing turn inwardly of the pitch radii has the same cross-section and flank angle as the turns on the shank portion and the sizing turn in a region outwardly of the pitch radii has a flank angle slightly less than the flank angle o f the turns in the shank portion and crest radii at the lobes which are greater than the crest radii at the lobes of the shank turn to compensate for the contraction of the dedendum portion of the internal threads swaged in the workpiece.
    Type: Grant
    Filed: January 3, 1974
    Date of Patent: February 3, 1976
    Assignee: Rockford Headed Products, Inc.
    Inventor: Paul R. Lathom