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:
Jan. 21, 2025
Filed:
Oct. 24, 2023
Applicant:
Ntn Corporation, Osaka, JP;
Inventors:
Masazumi Kobayashi, Shizuoka, JP;
Tomoshige Kobayashi, Shizuoka, JP;
Assignee:
NTN CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D 3/224 (2011.01); F16D 3/2245 (2011.01); F16D 3/227 (2006.01); F16D 3/223 (2011.01);
U.S. Cl.
CPC ...
F16D 3/2245 (2013.01); F16D 3/227 (2013.01); F16D 2003/22303 (2013.01); Y10S 464/906 (2013.01);
Abstract
A plunging type constant velocity universal jointfor a propeller shaft includes an outer joint member, an inner joint member, eight torque transmidetting balls, and a cage. A center of curvature Oof a spherical outer surfaceand a center of curvature Oof a spherical inner surfaceof the cageeach have an equal and axially opposite offset (f) with respect to a center Oof pockets. A ratio f/PCDbetween the offset (f) of the cageand a pitch circle diameter (PCD) of the torque transmitting ballsis 0.07 or more and 0.09 or less.