Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
SURFACE TREATMENT METHOD FOR SEALING DEVICE DISC MEMBER, AND SEALING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/090602
Kind Code:
A1
Abstract:
Provided are a sealing device that can prevent resting leakage of an object to be sealed without increasing sliding resistance with respect to an axle, and a surface treatment method for a sealing device disc member that can easily treat the surface of the disc member, such as a slinger, of the sealing device. The surface treatment method for a sealing device disc member in which a plurality of spiral micro grooves are formed on the surface (31d) of a disc member (3) of the sealing device is characterized in that a grinding member (64) having a plurality of minute projections is moved toward the outer edge (arrow c) while pressing against the surface (31d) of the disc member (3) relatively rotating about an axis (y). The sealing device is characterized in that a face on the other side of the flange is provided with a slinger (3) on which the plurality of spiral micro grooves are randomly formed.

Inventors:
YONAI HISATO (JP)
SAKANO YUYA (JP)
INOUE MASAHIKO (JP)
Application Number:
PCT/JP2019/041636
Publication Date:
May 07, 2020
Filing Date:
October 24, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NOK CORP (JP)
International Classes:
F16J15/00; B24B1/00; B24B29/04; F16J15/3232; F16J15/3244
Domestic Patent References:
WO2018097233A12018-05-31
Foreign References:
JP2017069271A2017-04-06
JP2012166326A2012-09-06
JPH10503266A1998-03-24
JPH08254213A1996-10-01
JPH0488773U1992-07-31
JPH0480967U1992-07-14
Other References:
See also references of EP 3875808A4
Attorney, Agent or Firm:
EINSEL Felix-Reinhard et al. (JP)
Download PDF: