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APPARATUS FOR INSPECTING TUBULAR GOODS HAVING AN AUTOMATIC SHUTTER

  • US 3,684,887 A
  • Filed: 03/26/1970
  • Issued: 08/15/1972
  • Est. Priority Date: 03/26/1970
  • Status: Expired due to Term
First Claim
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1. Apparatus adapted for inspecting an elongated tubular member and comprising:

  • conveyor means adapted for axially translating an elongated tubular member along a selected longitudinal axis;

    radiation-detecting means including a radiation detector disposed generally along said axis and adapted for insertion into a tubular member being moved along said conveyor means toward said radiation detector to receive radiation directed theretoward;

    radiation-emitting means including a body adapted for rotation about said axis and having a passage therein directed inwardly toward said radiation detector, a radiation source operatively arranged on said rotatable body in relation to said passage for directing a beam of radiation inwardly therethrough toward said radiation detector, and means operatively arranged for rotating said rotatable body about said axis to progressively sweep said beam of radiation around said radiation detector;

    radiationcontrolling means including a member operatively arranged on said rotatable body for movement relative thereto between first and second positions, said movable member having one portion adapted to be aligned with said passage upon movement thereof to its said first position for attenuating said beam of radiation to a selected level of intensity;

    actuating means mounted adjacent to said rotatable body and operatively arranged for selectively shifting said movable member between its said positions upon rotation of said rotatable body; and

    control means operatively arranged between said actuating means and said conveyor means for operating said actuating means to shift said movable member to its said first position in response to movement of a tubular member in a selected direction along said conveyor means.

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