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:
Jun. 14, 2022
Filed:
Mar. 08, 2018
Ntn Corporation, Osaka, JP;
Masazumi Kobayashi, Shizuoka, JP;
Tomoshige Kobayashi, Shizuoka, JP;
NTN CORPORATION, Osaka, JP;
Abstract
A plunging type constant velocity universal joint includes an outer joint member, an inner joint member, eight balls, and a cage. A curvature center of a spherical portion of an outer peripheral surface of the cage and a curvature center of a spherical portion of an inner peripheral surface of the cage are offset to opposite sides in the axial direction with respect to a joint center by an equal distance. A ratio PCD/Dof a pitch circle diameter PCDof the balls to a diameter Dof each of the balls is set from 3.3 to 3.6. A ratio T/Dof a radial thickness Tof the inner joint member to the diameter Dof each of the balls is set from 0.30 to 0.45.