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:
Jul. 18, 2017
Filed:
Mar. 13, 2013
Applicant:
The Lubrizol Corporation, Wickliffe, OH (US);
Inventors:
Oliver Smith, University Heights, OH (US);
Michael R. Sutton, Matlock, GB;
Assignee:
The Lubrizol Corporation, Wickliffe, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N 29/42 (2006.01); G01N 29/04 (2006.01); G01N 29/46 (2006.01); G01N 29/44 (2006.01);
U.S. Cl.
CPC ...
G01N 29/4445 (2013.01); G01N 29/04 (2013.01); G01N 29/043 (2013.01); G01N 29/42 (2013.01); G01N 29/4409 (2013.01); G01N 29/46 (2013.01); G01N 2291/044 (2013.01); G01N 2291/102 (2013.01);
Abstract
Ultrasonic measurement apparatusincludes a transmitterto transmit an ultrasonic signalinto an item. A receiverreceives echoesfrom the item. The apparatusmeasures the frequency spectrum of the echoand makes a comparison with another frequency spectrum to extract information relating to a change in the item. For example, the itemmay wear during use. A comparison of the frequency spectrum, with previous frequency spectra, allows changes of dimension of the itemto be identified. Changes in amplitudes of the frequency spectrum allow changes in roughness to be detected.