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Modularized machine for reconditioning pipelines

  • US 5,136,969 A
  • Filed: 01/25/1991
  • Issued: 08/11/1992
  • Est. Priority Date: 01/25/1991
  • Status: Expired due to Term
First Claim
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1. A modularized travel machine for reconditioning pipelines, comprising:

  • (a) a portable frame construction capable of being manually positioned around a pipeline;

    (b) at least one manually portable travel module capable of travel along a pipeline and attachable to said frame construction at a point above the centerline of said pipeline to support and move said frame construction along said pipeline;

    (c) at least one manually portable traction module attachable to said frame construction at a point underneath said pipeline such that approximately constant traction between said travel module and surface of said pipeline is provided regardless of irregularities on the surface of said pipeline;

    (d) at least three adjustable roller assemblies attachable to said frame construction;

    (e) a portable partial ring construction capable of being manually assembled and then placed over said pipeline such that said partial ring construction is concentrically rotatable about said pipeline on said roller assemblies;

    (f) a manually portable rotating module attachable to said frame construction such that said rotating module can rotate said partial ring construction; and

    (g) at least one adjustable retaining arm attachable to said partial ring construction that can retain a reconditioning device at a desired position relative to said partial ring construction.

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