Patents by Inventor Derek Cecil Wright

Derek Cecil Wright 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).

  • Flexible plastics hose making apparatus
    Patent number: 3938929
    Abstract: A method of, and apparatus for manufacturing a flexible plastics hose the method comprising extruding a strip of a first plastics material and a reinforcing element of a second plastics material, winding said strip into a helix around a driven mandrel and bonding adjacent turns together by pressure applied between the mandrel and roller means external thereof to form a tubular wall of said plastics material and simultaneously winding said reinforcing element around the helix of said first plastics material in spaced apart helical turns and pressing it into the first plastics material by said roller means so as to partially embed said reinforcing element into said tubular wall.
    Type: Grant
    Filed: December 12, 1974
    Date of Patent: February 17, 1976
    Assignee: Creators Limited
    Inventors: Vernon Dennis Stent, Derek Cecil Wright