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. 31, 1992
Filed:
Jan. 22, 1990
Applicant:
Inventors:
Roger C Oestreich, River Falls, WI (US);
Richard Rosik, Minneapolis, MN (US);
Assignee:
Modern Controls, Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324671 ; 324690 ; 324558 ;
Abstract
An on-line capacitance sensing system, including a capacitance sensor, for measuring changes in thickness of a plastic film which passes over the sensor in contacting relationship; the sensor is mounted to a carriage which may be reciprocated transversely across the width of the film, and a partial vacuum is applied to the sensor to assist in holding the moving plastic film in contacting relationship against the sensor.