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:
Sep. 01, 2015
Filed:
Apr. 18, 2011
Keisuke Uchida, Nagoya, JP;
Shingo Iwatani, Nisshin, JP;
Katsunori Suzuki, Iwata, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-Shi, JP;
Abstract
A method for manufacturing a vehicle power transmission device having a case and a ring gear fitted to the outer peripheral surface of the case to transmit drive power from a drive source. The method includes: a welding step in which an annular flange is provided on the case or the ring gear and butt welding is performed by lapping a weld bead along the contact portion of one side surface of the annular flange and the case or the ring gear; a measurement step in which the outline of the other side surface of the annular flange placed in close proximity to the one side surface are measured; and an evaluation step in which a weld condition is evaluated based on part of the outline, which is determined in the measurement step, of a portion corresponding to the lapping portion of the weld bead.