The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 18, 1994
Filed:
Feb. 18, 1993
Rudolf Infanger, Hinwil, CH;
Ferag AG, Hinwil, CH;
Abstract
The apparatus described in the present disclosure is fitted above a support (30) on which printed products are transported as a scale-like stream (31). It has two measuring points (M.1 M.2) placed at a distance from each other, which scan the surface of the scale-like stream. In the method described in the present disclosure, this apparatus measures the difference in the level of the surface of the scale-like stream between the two measuring points, records it as a measuring signal, and uses it to detect faults in the scale-like stream. The difference of levels is large when there is an edge of a product between the two measuring points and small when both the measuring points are on the stone product, but the total thickness of the scale-like stream in no case affects the difference of level. Typically, the apparatus described in the present disclosure has two contact wheels (11, 21) that run over the surface of the scale-like stream; the first contact wheel is fitted to a pivot arm (13), the second contact wheel (21) is fitted to a lever (23) which in turn pivots on the arm (13), and a sensor measures the amount of the pivot movement of the lever (23).