Patents Assigned to Clecon Incorporated
  • Method for making flexible duct
    Patent number: 4104097
    Abstract: The present invention relates to an apparatus and method for making a flexible duct of wire-reinforced construction made from a plurality of adhesive-coated polymeric tapes. The tapes are simultaneously applied from angularly oppositely disposed directions in conjunction with application of a reinforcement wire to provide a helix construction with overlapping convoluted edges to provide a duct of predetermined length.
    Type: Grant
    Filed: August 5, 1976
    Date of Patent: August 1, 1978
    Assignee: Clecon Incorporated
    Inventors: Raymond A. Gregory, DeWitt Gifford Wilcox