Patent ID: 9569833
Date: 2017-02-14
CPC Classifications: B67B,G01L,G06T

Claim:
1. A method for checking, without contact, whether a torque required to open a plastic screw closure screwed onto a transparent bottle corresponds to a predetermined value, the method comprising: evaluating the image of a mark on the bottle and a mark on the screw closure; establishing the rotational position of the screwed-on plastic screw closure with respect to the bottle by way of the image evaluation; wherein the rotational position of the bottle or of the screw closure is established by i) directing a bundle of rays underneath the screw closure at an angle upwards at a side of the bottle such that a bottle mouth is illuminated from inside on an opposite side of the bottle; ii) capturing an image of an external side of the screw closure by a camera; and iii) evaluating the captured image.