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Coupling for plastic pipe

  • US 4,109,941 A
  • Filed: 06/08/1976
  • Issued: 08/29/1978
  • Est. Priority Date: 06/08/1976
  • Status: Expired due to Term
First Claim
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1. An apparatus for connecting conduits of equal external dimensions aligned end-to-end comprising:

  • (a) a first section of tubing of internal dimensions to slide over juxtaposed conduits of equal external dimensions at the juxtaposition of the conduits, said first section of tubing having two grooves, one spaced from each end of the internal surface of the section;

    (b) resilient gasket material for encircling said conduits and substantially filling said two grooves;

    (c) encasing tubing overlying said first section of tubing at least surrounding each of said grooves; and

    (d) a pair of split metal clamping rings, each ring comprising as a clamping surface on its inner surface a plurality of interspaced grooves adapted to receive the deformed surface of a conduit compressed by the clamping ring positioned with one ring adjacent each end of said first tubular section with spacer bars joining said clamping rings, said spacer bars fitting over the encasing tubing in relation to apply pressure on the encasing tubing with the split rings in clamped position.

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