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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2019/194219
Kind Code:
This sealing device is disposed between an inner member and an outer member which rotate relative to each other. The sealing device is provided with: a tubular part mounted on a cylindrical end of the outer member; an annular part which is connected to one end of the cylindrical part and has a portion disposed further radially inward than the end of the outer member; and at least one rib which extends from the annular part toward the inner member. Each of the annular part and the tubular part has an elastic portion and a rigid portion. At least one among an upper surface which is a surface of the annular part on a side opposite to the tubular part, and a lower surface of the tubular part on a side opposite to the annular part is formed from the elastic portion. A plurality of protrusions protruding axially is formed on at least one among the upper surface of the annular part and the lower surface of the tubular part, and the plurality of protrusions are disposed to be spaced apart from each other on a circumference, the center of which is the central axis line.

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SEKI Masahiro (8 Aza Tsuzukibori, Nagaikawa, Fukushima-sh, Fukushima 93, 〒9601193, JP)
Application Number:
Publication Date:
October 10, 2019
Filing Date:
April 03, 2019
Export Citation:
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NOK CORPORATION (12-15, Shiba Daimon 1-chome Minato-k, Tokyo 85, 〒1058585, JP)
International Classes:
F16J15/3204; F16C33/78
Foreign References:
Attorney, Agent or Firm:
KONISHI Kay et al. (2-21-8, Akasaka Minato-k, Tokyo 52, 〒1070052, JP)
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