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Flexible tube with mutually parallel, ring-shaped flutes and axial support

  • US 4,791,963 A
  • Filed: 07/15/1986
  • Issued: 12/20/1988
  • Est. Priority Date: 02/04/1985
  • Status: Expired due to Fees
First Claim
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1. Flexible thin-walled tube (1, 100) with mutually parallel ring-shaped flutes (105), end connectors (101) and longitudinal support means which hold said connectors against changes in axial spacing and which are securely joined to said connectors in the direction of at least one of:

  • pull, pressure, and against which the tube is at least indirectly braced,wherein the longitudinal support means include at least two cables (4, 5;

         102) extending generally parallel to the tube, arranged symmetrically about the tube axis and located externally of the tube and guiding said tube in radial direction;

    and including spacers (3,

         104) determining the relative position between the tube and said cables and holding the cables at intervals along the length of the tube,said spacers including rings (104) which, each, comprise ring segments (106,

         107) captively enclosing the tube and retaining said cables, the ring segments being formed with aligned holes (109) at respective ends and through which the cables (102) are placed to hold the ring segments in opposed position, in pairs, and thereby form said rings.

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