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:
Nov. 28, 2023
Filed:
Feb. 28, 2020
Nok Corporation, Tokyo, JP;
Kenichi Kikuchi, Fukushima, JP;
NOK CORPORATION, Tokyo, JP;
Abstract
A sealing device includes a reinforcement ring and an annular elastic body portion including a main body covering the reinforcement ring, a lip waist portion including an inner circumferential edge portion of the main body, a main lip extending from the lip waist portion to a first target side to be sealed and is to be in slidable contact with a rotary shaft, and a second dust lip extending from the lip waist portion to a second target side opposite to the first target side relative to the sealing device and being provided relative to the main lip with an annular space between the second dust lip and the main lip. The second dust lip includes a first lip slide portion being to be in slidable contact with the rotary shaft, a first protrusion formed on an inner circumferential surface of the second dust lip and closer to the first lip slide portion, and a second protrusion formed on the inner circumferential surface and closer to the lip waist portion than the first protrusion.