Patents by Inventor Travis E. Riley

Travis E. Riley 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).

  • Geophone springs
    Patent number: 4238845
    Abstract: A spring for a geophone has a plurality of spring arms connecting inner and outer concentric annular portions to resiliently resist relative movement of the annular portions along the concentric axis. Two support arms are connected to each spring arm. Each support arm has one end connected to one of the annular portions and the other end connected to the spring arm at a point spaced from the point of connection of the other spring arm to increase the natural frequency of the spring in a direction lateral to the concentric axis without changing appreciably the natural frequency of the spring along the concentric axis.
    Type: Grant
    Filed: April 10, 1979
    Date of Patent: December 9, 1980
    Assignee: Mark Products, Incorporated
    Inventors: Samuel E. Haggard, Travis E. Riley, Eugene F. Florian, deceased