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. 23, 2013
Filed:
Apr. 02, 2010
Junichi Izumino, Iwata, JP;
Kenji Konaka, Iwata, JP;
Hiroshi Murakami, Iwata, JP;
Akira Sera, Iwata, JP;
Jiahua Miao, Iwata, JP;
Shunsuke Makino, Iwata, JP;
Junichi Izumino, Iwata, JP;
Kenji Konaka, Iwata, JP;
Hiroshi Murakami, Iwata, JP;
Akira Sera, Iwata, JP;
Jiahua Miao, Iwata, JP;
Shunsuke Makino, Iwata, JP;
NTN Corporation, Osaka, JP;
Abstract
A manufacturing method for a tripod type constant velocity universal joint includes, when forging a raw-shaped material corresponding to each of three journals into a journal shape using a molding surface of a die and in a state where a relief portion is provided on a raw-shaped-material-leading-end-side of the die, molding an outer peripheral surface of the raw-shaped material into a projected round shape. The molding occurring with a tapered surface formed on the molding surface with which the outer peripheral surface of the raw-shaped material is held in contact and a recessed round surface formed between the molding surface and the tapered surface.