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Flexible cable

  • US 4,396,797 A
  • Filed: 12/21/1981
  • Issued: 08/02/1983
  • Est. Priority Date: 12/27/1980
  • Status: Expired due to Fees
First Claim
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1. A flexible cable device, comprising:

  • a. a flexible cable, including(1) a plurality of longitudinally axially symmetrical pipe members, each having a cylindrical large diameter end and a cylindrical small diameter end, each of said large diameter and small diameter ends having uniform internal and external diameters, the large diameter end of each of said plurality of pipe members terminating at a first and a second vertical end face at opposite axial ends thereof, the internal diameter of said large diameter end exceeding the external diameter of said small diameter end by a clearance amount P, said plurality of pipe members being assembled together along their longitudinal axes with said small diameter end of each of said plurality of pipe members being inserted into said large diameter end of an adjacent one of said plurality of pipe members so that said first and second end faces of adjacent ones of said plurality of pipe members are in confronting relation to each other, and(2) a plurality of flexible resilient ring members, each of said pipe members having one of said plurality of ring members loosely fitted over the small diameter end thereof interposed between confronting ones of said first and second end faces so as to be engaged on opposite sides by said first and second end faces; and

    b. an inner conduit member extending in said cable along its longitudinal axis;

    said clearance amount P being selected such that if the cable is bent to its maximum bending curvature said inner conduit member will not be damaged.

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