Patents by Inventor Derek C. Roberts

Derek C. Roberts 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).

  • Patent number: 5503423
    Abstract: The invention relates to a swing away hitch for a trailer and method of making same. The hitch is intended to allow the trailer to be parked in a building only slightly longer than the boat itself. Boat trailer hitches extend beyond the bow of the boat by some distance, and thus these trailers require a shed longer than the actual boat. To correct this problem, a swing away hitch is installed proximate the boat. According to the present method, the tubular hitch is sandwiched between top and bottom plates. Holes through the hitch and the plates are aligned with one another and a tubular casing is inserted through the holes. Thereafter, the ends of the tubular casings are "swedged" or expanded by pressing bullet shaped pins into opposite ends of the casings. The swedging effect securely fastens the components. Finally, pins are inserted through the casings to mount the swing away hitch on the trailer.
    Type: Grant
    Filed: June 14, 1994
    Date of Patent: April 2, 1996
    Assignee: Tracker Marine, L.P.
    Inventors: Derek C. Roberts, Walford A. Anderson
  • Patent number: 4417666
    Abstract: A container closure which has a cap part with an internal screw thread to engage with an external screw thread on the container, a tear away band connected to the skirt of the cap part to show whether the closure has been tampered with and a captive band connected to the tear away band.
    Type: Grant
    Filed: February 22, 1982
    Date of Patent: November 29, 1983
    Assignee: Johnsen & Jorgensen (Plastics) Limited
    Inventor: Derek C. Roberts