Wirelaying tool
AssigneeMSA Engineering Systems Limited
InventorsGary Jones, Paul Cawrey
Life of this patent
Estimating the term…
Abstract
A wirelaying apparatus and method using a tool (30) having a cutter/cutting tip (31) operatively opening a cut in the interior bore surface (11) of a cylindrical pipe fitting (10), laying wire (12) into the cut and closing the cut using a flange closer (33). The wire (12) is delivered into the cut via an aperture (32) through the cutting tip (31). Delivery of the wire (12) into the cut is thereby improved, overcoming the problem of wire running free within the fitting. In a second embodiment (see FIG. 12) the cutter (31) is rotatably mounted allowing a double helical coil to be formed without removing the cutter from the bore surface.
Claims18
A wirelaying tool for laying wire into an interior bore surface of a hollow cylinder, comprising:
- a cutting tip to, in use, make a cut into an interior bore surface of a hollow cylinder;
- a wire guide aperture to guide a wire into the cut, the wire guide aperture extending through the cutting tip to an exterior surface of the cutting tip lying in the cut in use such that the wire enters the cut directly through the culling tip;
- and
- an encloser to close the cut after the wire has been fed into the cut, thereby enclosing the wire in the cut.
A wirelaying apparatus for laying wire into an interior bore surface of a hollow cylinder, comprising:
- an elongate bar;
- a head portion carried by the elongate bar;
- a wirelaying tool adapted to be readily releasably coupled to the head portion, and in use carried by the head portion, wherein the wirelaying tool comprises:
- a cutting tip for making a cut into an interior bore surface of a hollow cylinder;
- a wire guide aperture for guiding wire into the cut, the wire guide aperture extending through the cutting tip and lying in the cut in use such that the wire enters the cut directly through the cutting tip;
- and
- an encloser for closing the cut after the wire has been fed into the cut, thereby enclosing the wire in the cut.
A method for laying wire into an interior bore surface of a hollow cylinder, comprising the steps of:
- opening a cut in the interior bore surface using a cutting tool having a cutting tip;
- guiding a wire directly into the cut by means of a wire guide aperture extending through the cutting tip to an exterior surface thereof lying in the cut;
- and
- closing the cut to enclose the wire in the cut.
Dependencies are inferred from the claim text.