Patent ID: 8222593
Filing Date: 2012-07-17
Classification: B29D,G01B

Abstract:
1. A detection device for detecting a thickness anomoly region within a strip of stock, the device comprising: (A) a first roller operatively rotating as the strip of stock passes over a first roller surface; (B) a pivotally mounted pinch roller positioned to operatively pivot about a pivot axis against the strip of stock passing over the first roller; (C) a photoeye mask substantially extending in a radial direction from the pinch roller pivot axis and positioned to rotate about the pivot axis responsive to pivotal movement of the pinch roller; (D) a substantially straight photoeye mask slot within the photoeye mask extending between a slot leading end and a slot trailing end and oriented at an angle with respect to the pinching roller axis of rotation; (E) a photoeye device comprising paired transmitting and receiving optical devices, the transmitting and receiving devices positioned on opposite sides of the photoeye slot of the photoeye mask and operative in an photoeye mask-aligned position to project a substantially centered through-beam through the photoeye slot between the transmitting and receiving optical devices; and (F) wherein the photoeye slot is adjustably repositionable relative to the photoeye device to operably simultaneously adjust a sensitivity of gauge change measurement and a set point of a nominal stock thickness against which the strip of stock is to be measured.