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:
Sep. 29, 1981
Filed:
Dec. 03, 1979
Applicant:
Inventors:
Gary A Baum, Appleton, WI (US);
Charles C Habeger, Appleton, WI (US);
Assignee:
The Institute of Paper Chemistry, Appleton, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73597 ; 73639 ; 73159 ; 310334 ;
Abstract
A device which measures the velocity of ultrasonic waves in a moving web is provided. A pair of wheels is mounted for continuous surface contact with the paper and a transducer, which contacts the web on each revolution, is located in each wheel for relating electrical and mechanical signals. Timing means measures the time it takes a mechanical signal generated at the first wheel to reach the second wheel. Noise reducing and amplifying means are provided for effective operation.