Repair coupler

  • US 4,652,023 A
  • Filed: 05/29/1985
  • Issued: 03/24/1987
  • Est. Priority Date: 02/13/1984
  • Status: Expired due to Fees
First Claim
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1. A coupler for sealing leaks in an existing pipe and for connecting first and second pipes in leakproof relationship comprising:

  • (a) first and second substantially identical complementary coupler members adapted to be assembled on a pipe;

    (b) each of said coupler members comprising a central semicircular portion and flanges extending laterally from said central portion;

    (c) each of said semicircular portions having a plurality of longitudinally spaced grooves formed therein;

    (d) each of said flanges having a longitudinal recess formed therein adjacent the corresponding edge of said semicircular portion;

    (e) a liner received in each of said members and adapted to engage a pipe in sealing relationship;

    (f) each of said liners comprising a plurality of semicircular ribs, each of said ribs being received in a corresponding one of said grooves;

    (g) each of said liners further including longitudinal ribs connecting the ends of said semicircular ribs, each of said longitudinal ribs being received in a corresponding one of said longitudinal recesses;

    (h) fasteners engaging said flanges for causing said liners to be urged against the pipe in sealing relationship;

    (i) said semicircular portion of said coupler member including first ridges extending above the surface of said semicircular portion, each of said first ridges being disposed adjacent the corresponding one of said grooves nearest the end of said coupler member and being displaced toward the corresponding end of said coupler member relative to said groove, each of said first ridges supporting the adjacent rib of said liner against longitudinal pressure blow-out, each of said first ridges being of such height relative to the thickness of the rib extending above the surface of said semicircular portion of said coupler member that, when the coupler elements are in final assembled relationship and said rib is compressed, said ridges engage the pipe for supporting the pipe and minimizing relative movement between the pipe; and

    (j) each of said flanges including a longitudinally extending projection on the inwardly-facing surface thereof approximately at the outer edge thereof, said fasteners engaging said flanges inwardly of said longitudinally extending projections, said projections providing a gauge for determining when proper sealing pressure has been applied to said coupler.

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