Patents by Inventor Thomas N. R. Travis

Thomas N. R. Travis 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).

  • Methods of assembling a chain and a rivet for use in such assembly
    Patent number: 5729882
    Abstract: A saw chain of a chain saw has its side links and center links interconnected by rivets. Prior to being staked, each rivet is in blank form and includes a cylindrical flange and a pair of barrels extending from opposite sides of the flange along a center axis thereof. Each barrel includes an axially inner cylindrical section and a tapered axially outer section. When the rivet is staked, the center section of each barrel fills a cylindrical portion of a hole formed in a respective side link, and the tapered section fills a chamfered portion of the hole to form a rivet head. The staked rivet bears against a wall of the cylindrical portion of the hole with a greater force than that with which the rivet bears against a wall of the tapered portion of the hole.
    Type: Grant
    Filed: March 12, 1996
    Date of Patent: March 24, 1998
    Assignee: Sandvik AB
    Inventor: Thomas N. R. Travis
  • Three quadrant rotary storage unit
    Patent number: D355314
    Type: Grant
    Filed: September 27, 1993
    Date of Patent: February 14, 1995
    Inventor: Thomas N. R. Travis