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Variable buoyancy cable

  • US 6,239,363 B1
  • Filed: 04/06/1999
  • Issued: 05/29/2001
  • Est. Priority Date: 09/29/1995
  • Status: Expired due to Fees
First Claim
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1. A variable buoyancy cable, comprising:

  • a flexible sleeve having an inner wall and an outer wall;

    a core positioned in the sleeve and having at least two longitudinally disposed outwardly projecting splines, the at least two splines being circumferentially spaced apart to define at least one external channel, the at least one external channel and the inner wall of the flexible sleeve defining at least one fluid passage for receiving a fluid to affect the buoyancy of the variable buoyancy cable;

    a slackened utility line positioned in the at least one external channel; and

    a fluid supply coupled to the flexible sleeve and being operable to move fluid into and out of the at least one fluid passage to selectively affect the buoyancy of the variable buoyancy cable.

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