Patents by Inventor David B. Speer

David B. Speer 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).

  • Knurled fastener with cutting edges and removable head
    Patent number: 6872042
    Abstract: A novel fastener comprises a head having a recess for receiving a rotary driver, a shank having knurls defined by generally helical grooves and intersecting generally annular grooves, wherein a plurality of the knurls include a lateral cutting edge, and a generally pointed tip. Another novel fastener comprises a head having a recess for receiving a rotary driver, a shank having a predetermined diameter small enough so that the head will break away from said shank upon application of a predetermined torque, and said shank having knurls defined by generally helical grooves and intersecting generally annular grooves.
    Type: Grant
    Filed: May 8, 2003
    Date of Patent: March 29, 2005
    Assignee: Illinois Tool Works Inc.
    Inventors: Cheryl L. Panasik, Kenneth R. Levey, David B. Speer
  • Knurled fastener with cutting edges and removable head
    Publication number: 20040223830
    Abstract: A novel fastener comprises a head having a recess for receiving a rotary driver, a shank having knurls defined by generally helical grooves and intersecting generally annular grooves, wherein a plurality of the knurls include a lateral cutting edge, and a generally pointed tip. Another novel fastener comprises a head having a recess for receiving a rotary driver, a shank having a predetermined diameter small enough so that the head will break away from said shank upon application of a predetermined torque, and said shank having knurls defined by generally helical grooves and intersecting generally annular grooves.
    Type: Application
    Filed: May 8, 2003
    Publication date: November 11, 2004
    Inventors: Cheryl L. Panasik, Kenneth R. Levey, David B. Speer
  • Fastener head with stabilizing ring
    Patent number: 4759672
    Abstract: A fastener head, preferably a capped fastener head, including a sloping flange surrounding a central wrenching portion, having wrenching surfaces, such as axial hexagonal surfaces.A rib disposed on the sloping flange provides stability to a fastener head having such a rib by increasing the overturning moment required to buckle a column comprised of a fastener and driver. The rib is continuous around the flange and is as high as the bottom of the wrenching surfaces to reduce wobble during driving of the fastener head.
    Type: Grant
    Filed: May 8, 1987
    Date of Patent: July 26, 1988
    Assignee: Illinois Tool Works Inc.
    Inventors: Martin Nilsen, David B. Speer