MULTI-USE TORQUE FITTING AND COMPRESSIBLE FERRULE

  • US 20090218813A1
  • Filed: 02/28/2008
  • Published: 09/03/2009
  • Est. Priority Date: 02/28/2008
  • Status: Active Grant
First Claim
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1. An assembly comprising a torque fitting, a length of tubing, and a compressible ferrule, wherein:

  • the torque fitting comprises a threaded body portion, a torque-limiting body portion, and a channel;

    the threaded body portion and the torque-limiting body portion are arranged substantially concentrically along a longitudinal axis of the fitting;

    the channel is oriented along the longitudinal axis of the fitting and defines a cross-sectional area sufficient to accommodate the length of tubing along the axis;

    the threaded body portion comprises a compressing edge on the underside of the threaded body portion and a mechanical thread defining a compressive direction of rotation and a decompressive direction of rotation;

    the threaded body portion and the torque-limiting body portion are configured such that,below a threshold level of torque applied to the torque-limiting body portion, rotation of the torque-limiting body portion in the compressive direction of rotation forces the threaded body portion to rotate with the torque-limiting body portion,above the threshold level of torque applied to the torque-limiting body portion, rotation of the torque-limiting body portion in the compressive direction of rotation fails to force the threaded body portion to rotate with the torque-limiting body portion, androtation of the torque-limiting body portion in the decompressive direction of rotation forces the threaded body portion to rotate with the torque-limiting body portion,the length of tubing is accommodated by the channel of the torque fitting; and

    the compressible ferrule is applied to an end of the length of tubing such that the compressible ferrule is positioned to cooperate with the torque fitting to prevent substantial fluid leakage when the assembly is applied to a fluid-handling device.

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