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:
Dec. 25, 2012
Filed:
Oct. 28, 2009
Sadatsune Kazama, Iwata, JP;
Izumi Ohashi, Iwata, JP;
Sadatsune Kazama, Iwata, JP;
Izumi Ohashi, Iwata, JP;
NTN Corporation, Osaka, JP;
Abstract
A retainer-equipped roller includes a retainer () having a pair of ring parts () separated in an axis O direction and column parts () arranged circumferentially at regular intervals so as to form pockets () and connect the pair of ring parts (), and a plurality of rollers () arranged in the pockets. The roller () has a chamfered part () provided between a roller end face and a roller rolling surface (). The column part () is positioned on a radial outer side of a pitch circle PCD of the roller (), and a distance between the circumferentially adjacent column parts (and) is smaller than a diameter of the roller (). The pair of ring parts () has a pair of projection members () projecting such that their tip ends are opposed so as to come close to each other, in circumferentially the same position as the column part (), and in a position on a radially inner side of the pitch circle PCD of the roller (). The tip ends of the pair of projection members () abut on the chamfered parts () provided at both ends of the roller () and hold the roller between the pair of ring parts ().