Patents by Inventor Gary Martin Curtis

Gary Martin Curtis 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).

  • Preassembled spring washer fastener unit
    Patent number: 4031936
    Abstract: A locking fastener unit including a spring washer preassembled to a rotary fastener member with mounting means having an axis disposed eccentrically to the axis of the thread convolutions so that retrograde motion of these threaded fastener units is resisted both by the spring tension of the washer and by the requirement that the washer must include a translational movement element as the fastener member is rotated in a retrograde direction.
    Type: Grant
    Filed: November 14, 1975
    Date of Patent: June 28, 1977
    Assignee: Illinois Tool Works Inc.
    Inventor: Gary Martin Curtis
  • Buckle with a visual tension indicator
    Patent number: 4015311
    Abstract: This invention relates to a buckle usable for securing the two ends of a looped band together about a workpiece, the new and unusual feature being directed to the provision of a distortable element provided in the buckle body which as a tension applying tool draws up on the complementary band the distortable element of the buckle gives a visual indication of the appropriate or predetermined tension having been applied to the band. Thereafter, the buckle and band are permanently set relative to each other.
    Type: Grant
    Filed: April 28, 1976
    Date of Patent: April 5, 1977
    Assignee: Illinois Tool Works Inc.
    Inventor: Gary Martin Curtis