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. 28, 2020
Filed:
Nov. 01, 2017
Jtekt Corporation, Osaka-shi, JP;
Nakanishi Metal Works Co., Ltd., Osaka-shi, JP;
Hiroshi Yano, Osaka, JP;
Minoru Nakamura, Osaka, JP;
Nozomi Yasufuku, Osaka, JP;
Mitsuru Saito, Osaka, JP;
JTEKT CORPORATION, Osaka-shi, JP;
NAKANISHI METAL WORKS CO., LTD., Osaka-shi, JP;
Abstract
A sealed thrust bearing includes an inner ring; an outer ring facing the inner ring in an axial direction; an elastic member that covers the inner ring so as to define; an inner elastic seal member that seals a space between an inner circumferential portion of the inner ring and an inner circumferential portion of the outer ring; and an outer elastic seal member that seals a space between an outer circumferential portion of the inner ring and an outer circumferential portion of the outer ring; and a lower member that is disposed below the outer ring for being assembled with the outer ring, and is provided with cation coating. The inner elastic seal member has a lip in pressure contact with an inner surface of one of a cylinder portion and a cylindrical portion of the lower member, and the outer elastic seal member has a lip in pressure contact with an upper surface of one of an annular ring portion and an annular portion of the lower member. The lip of the inner elastic seal member has an area including a portion in pressure contact with the lower member and is provided with an irregular portion having surface roughness (ten-point height of irregularities conforming to JIS B 0601-1994) from 20 μmRz to 50 μmRz.