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Segmented pipe couplings employing T-bolts and improved T-bolts therefor

  • US 6,581,977 B1
  • Filed: 04/28/1997
  • Issued: 06/24/2003
  • Est. Priority Date: 04/28/1997
  • Status: Expired due to Term
First Claim
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1. A segmented pipe coupling, including;

  • plural coupling segments having a bolting pad at each end of said coupling segments for bolting interconnection with an adjacent bolting pad of an adjacent coupling segment;

    said bolting pads each providing a bolting face;

    at least one of said bolting pads including a recess in said bolting face for the reception of a head of a T-bolt, said recess having two end faces;

    apertures in said bolting pads permitting the insertion of a shank of a bolt through said apertures;

    a T-bolt associated with each pair of adjacent bolting pads and having a generally cylindrical head and a shank, a longitudinal axis of said head extending substantially perpendicular to a longitudinal axis of said shank, said shank being inserted into and extending through said adjacent bolting pads;

    said head of said T-bolt defining a pivotal axis and receivable within said recess in said associated bolting face, said recess defining a corresponding pivotal axis, said head having end faces positionable opposite said respective end faces of said recess;

    said shank of said bolt being threaded;

    a member slidable longitudinally of said shank and an adjacent bolting pad and having a first surface portion engageable with a correspondingly configured surface portion of said adjacent bolting pad, and an opposite substantially planar face; and

    a nut threaded onto said threaded shank and having an operative face for operative surface engagement with said substantially planar face of said slidable member in a manner to interconnect said bolting pads;

    so that said shank can move relative to said associated bolting pads into a position in which an operative surface portion of said head and an operative surface portion of said nut are in continuous face engagement with the respective associated adjacent operative surfaces to maintain said coupling segments in interconnected relation, and said end faces of said recess provide resistance to rotation of said end faces of said head.

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