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. 09, 2010
Filed:
Feb. 23, 2005
Hiroaki Kuroda, Mishima, JP;
Makoto Momoi, Ayase, JP;
Masanori Taguchi, Takasaki, JP;
Eiichiro Muramatsu, Fuji, JP;
Hiroaki Kuroda, Mishima, JP;
Makoto Momoi, Ayase, JP;
Masanori Taguchi, Takasaki, JP;
Eiichiro Muramatsu, Fuji, JP;
JATCO Ltd, Fuji-shi, JP;
Abstract
A belt () of a continuously variable transmission comprises a pair of endless rings () and plural elements () held between the pair of endless rings (). The endless rings () are formed of plural laminated thin plates (). A prestress in a compression direction is applied beforehand to the surfaces of the thin plates () by a nitriding treatment. In this process, a defect part () is formed as a hollow in the thin plate () due to scatter in the nitriding treatment. This invention measures the depth of the defect part (), and if the measured depth exceeds a predetermined tolerance value, it is determined that the prestress is insufficient. Due to this determination method, a highly precise inspection of the thin plates () forming the endless rings () can be performed in a short time.