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:
Apr. 08, 2025
Filed:
Sep. 21, 2023
Nabtesco Corporation, Tokyo, JP;
Yuichi Asakawa, Tokyo, JP;
Takafumi Ito, Tokyo, JP;
NABTESCO CORPORATION, Tokyo, JP;
Abstract
One aspect of the present disclosure provides a first bearing including an inner ring, an outer ring, and cylindrical rollers. The inner ring includes: an insertion groove formed in a lower surface for inserting the cylindrical rollers between an inner raceway surface and an outer raceway surface; a blocking plug configured to block the insertion groove, the blocking plug having a part of the inner raceway surface formed thereon; and a bolt for securing the blocking plug in the insertion groove. In the mating surface of the blocking plug contacted with the bottom surface of the insertion groove, when the shortest length between the bolt insertion hole and the inner raceway surface is shown as La, and the shortest length between the bolt insertion hole and the inner peripheral surface is shown as Lb, the shortest lengths La and Lb satisfy the following formula: La/Lb>0.65.