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Seal for water proofing a utility line conduit and a method of forming the seal

  • US 4,607,469 A
  • Filed: 04/16/1984
  • Issued: 08/26/1986
  • Est. Priority Date: 01/03/1984
  • Status: Expired due to Fees
First Claim
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1. A seal against flow of ambient water through a designated confined cell space within a conduit having at least one electrical cable extending through the conduit, comprising in combination:

  • (a) a sealant body confined within said cell space as(1) partially a paste-consistency liquid disposed within said body wherein no reactant has reached said sealant, and(2) partially a cured flexible solid in the semblance of a rind on the exterior surface of said body or in leakage protrusions from said sealant body into leakage spaces wherein said sealant has been in contact with a water reactant;

    (b) solid rubber disc damming means loosely fitted within said conduit and around said electrical cable and respectively spaced apart to define the ends of said confined cell space wherein said sealant has formed a rind of sealant protruding into spaces between said conduit and said damming means and also between said electrical cable and said damming means; and

    (c) said sealant body being adapted, in the event that relative movement occurs between any of said conduit, said damming means and said electrical cable sufficient to disrupt a portion of the seal effected by said rind, to leak a measure of the liquid portion of said sealant body into the disrupted portion of said rind sufficient to fill any portion subject to leakage with said measure contacting said reactant and subsequently curing into a flexible solid.

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