Patents Assigned to Proleus, Inc.
  • Ribbed core dual wall structure
    Patent number: RE39521
    Abstract: An elongated composite tube made up of an inner tube 42 and an outer tube 44 (FIG. 3) with a plurality of elongated helical ribs disposed between the inner tube and the outer tube in a supporting relationship to both. A slinky like toy made from the composite tube is also disclosed, as is a method of making both.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: March 20, 2007
    Assignee: Proleus, Inc.
    Inventor: F. John Herrington