Title:
SEALING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/008403
Kind Code:
A1
Abstract:
The present invention improves sealing performance pertaining to oozing and leakage, of an object to be sealed, caused by rotary movements in both directions of an attachment target. This sealing device (1) comprises: an inner circumferential surface (10) which is a surface facing the outer circumferential surface of a shaft; and an outer circumferential surface (20) which is a surface facing the inner circumferential surface of a shaft hole. The inner circumferential surface (10) has an inner circumferential recess surface (11) which is an annular surface recessed toward the outer circumferential side. The outer circumferential surface (20) has an outer circumferential recess surface (21) which is an annular surface recessed toward the inner circumferential side. The inner circumferential recess surface (11) of the inner circumferential surface (10) is configured to be in contact with the outer circumferential surface of the shaft. The outer circumferential recess surface (21) of the outer circumferential surface (20) is configured to be in contact with the inner circumferential surface of a shaft hole.
Inventors:
MATSUSHITA KOYA (JP)
NISHIMURA TAKUYA (JP)
NISHIMURA TAKUYA (JP)
Application Number:
PCT/JP2022/028697
Publication Date:
February 02, 2023
Filing Date:
July 26, 2022
Export Citation:
Assignee:
NOK CORP (JP)
International Classes:
F16J15/18
Foreign References:
| JP2012159138A | 2012-08-23 | |||
| JP2005155743A | 2005-06-16 | |||
| JP2001032945A | 2001-02-06 | |||
| JP2010014202A | 2010-01-21 | |||
| JP2007255697A | 2007-10-04 | |||
| US6290235B1 | 2001-09-18 | |||
| JP2018173089A | 2018-11-08 |
Attorney, Agent or Firm:
EINSEL Felix-Reinhard et al. (JP)
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