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:
Mar. 23, 1993
Filed:
Oct. 31, 1991
Applicant:
Inventors:
Gary N Burk, Powell, OH (US);
Mark A Miller, Columbus, OH (US);
Assignee:
ABB Process Automation Inc., Columbus, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
250562 ; 250572 ;
Abstract
An apparatus for detecting streaks in a moving sheet of material utilizes the signal generating and processing means of an existing spot/hole detection system which provides a series of spot measurement signals generated sequentially as a machine direction series of cross-machine sets and assigns a cross-direction location to each signal. Means are provided for calculating an exponential average of the signals for each of the cross-machine locations. This average is compared with a predetermined standard and an output signal, including a cross-machine location, is generated when the average exceeds the standard.