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:
Oct. 29, 2019
Filed:
Jan. 29, 2016
Applicant:
Chugoku Marine Paints, Ltd., Otake-shi, JP;
Inventor:
Hirohisa Mieno, Otake, JP;
Assignee:
CHUGOKU MARINE PAINTS, LTD., Otake-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01N 19/00 (2006.01); G01B 11/30 (2006.01); G01B 11/06 (2006.01); G01N 13/02 (2006.01); G01D 5/347 (2006.01); G01N 19/02 (2006.01);
U.S. Cl.
CPC ...
G01N 19/02 (2013.01); G01B 11/0608 (2013.01); G01B 11/303 (2013.01); G01D 5/347 (2013.01); G01N 2013/0216 (2013.01);
Abstract
The invention provides a method which predicts a ratio of the increase in frictional resistance of a rough surface in a simple manner, quickly and without variations in predicted results among individuals. The method for predicting the frictional resistance of a rough surface having a variation in roughness wavelength, and being in contact with a fluid flowing at varied velocities includes evaluating the total projected area of all prominent peaks standing out above the viscous sublayer thickness per unit area, and calculating the friction increase ratio FIR (%) or the frictional resistance increase Δτ.