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. 17, 2017
Filed:
Oct. 16, 2013
Katsuaki Sasaki, Shizuoka, JP;
Katsuaki Sasaki, Shizuoka, JP;
NTN CORPORATION, Osaka, JP;
Abstract
Provided is a crown-shaped retainer (), including: an annular base (); a plurality of pockets () each penetrating the crown-shaped retainer in a radial direction thereof and having an opening (a) on one side of the crown-shaped retainer in an axial direction thereof; and a pair of prongs () positioned on both sides of the opening (a) of each of the plurality of pockets () in a circumferential direction of the crown-shaped retainer, the each of the plurality of pockets () having an inner circumferential surface including: a spherical portion () positioned on a radially inner side of the crown-shaped retainer; and a cylindrical portion () positioned on a radially outer side of the crown-shaped retainer, the cylindrical portion () having an inner diameter (φ D) larger than a ball diameter (dw).