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. 19, 1999
Filed:
Dec. 15, 1997
Yutaka Tanigaki, Iwata, JP;
NTN Corporation, Osaka, JP;
Abstract
Relief portions 1c1, 1c2 are formed at the boundary regions between the guide groove 1a and the inner peripheral surface 1b, and are respectively positioned at the inner side and the inlet side taking a joint center position 0 as a reference. The relief portions 1c1, 1c2 are gradually increased toward the end portions of the guide groove 1a. Groove depths ( .theta.1, .theta.2) of the guide groove 1a at the left region and the right region are identical to each other in all cross-sections orthogonal to the groove bottom line L, and the groove depth is the largest (.theta.2) at the center region including the joint center position 0, and is gradually decreased from the center region toward the both ends. (.theta.1: .theta.2>.theta.1).