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Cap orientation

  • US 10,640,351 B2
  • Filed: 05/03/2016
  • Issued: 05/05/2020
  • Est. Priority Date: 05/07/2015
  • Status: Active Grant
First Claim
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1. A method of applying a cap to a container, the method comprising:

  • arranging a first cap in relation to a neck of a first container such that a threaded portion of the first cap faces a complementary threaded portion of the neck of the first container and such that a first axis extending through a center of the first cap aligns with a second axis extending through a center of the neck of the first container;

    rotating the first cap around the first axis to a first angular position;

    applying the first cap to the neck by moving the threaded portion of the first cap towards the complementary threaded portion of the neck of the first container or by moving the complementary threaded portion of the neck of the first container towards the threaded portion of the first cap along the aligned first and second axes and by rotating the threaded portion of the first cap about the first axis in a direction of engagement with the complementary threaded portion of the neck of the first container;

    recording, with a processing unit, a path length of the first cap with respect to the first angular position, the path length representative of an angular rotation of the first cap about the first axis from the first angular position to a final angular position, wherein, at the final angular position, the threaded portion of the first cap completely engages the complementary threaded portion of the neck of the first container and the first cap reaches a bottom part of the neck of the first container;

    comparing, with the processing unit, the recorded path length of the first cap with a threshold value; and

    determining a second angular position of a second cap with respect to the first angular position of the first cap and rotating the second cap through an angle increment to a third angular position when the recorded path length of the first cap deviates from the threshold value, wherein the step of determining the second angular position of the second cap is performed by the processing unit.

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