US Patent 11143235 Tapered roller bearing

Patent 11143235 was granted and assigned to NTN Corporation on October, 2021 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Patent Applicant

NTN Corporation

Current Assignee

NTN Corporation

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

111432350

Patent Inventor Names

Takashi Kawai0

Tomoki Matsushita0

Date of Patent

October 12, 2021

Patent Application Number

201703070

Date Filed

March 7, 2017

Patent abstract

Two projecting portions (45a and 45b) configured to guide a tapered roller (3) on distal end surfaces thereof are formed on a side surface (43a) of a pillar portion (43) of a retainer (4) so as to be separated apart from each other in a roller axis direction. The projecting portions (45a and 45b) are separated apart from each other in the roller axis direction with respect to both a small-diameter-side annular portion (41) and a large-diameter-side annular portion (42). The projecting portions (45a and 45b) each have a force-fit margin (F).

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