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:
Jan. 19, 1988
Filed:
Apr. 08, 1986
Applicant:
Inventors:
Joachim Baumann, Garching, DE;
Peter Graf, Riemerling, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73622 ; 264 401 ; 425141 ;
Abstract
An apparatus for measuring the thickness of a tubular plastic layer during the process of its fabrication, which includes an ultrasonic transducer which generates a signal dependent on the thickness of the shape being measured while the shape is at a non-uniform condition of temperature, and circuitry for generating at least one signal from known process parameters, and an arithmetic unit for processing the signals derived as described above to generate an error signal which compensates for the influence of temperature on the test.