Title:
Sealing device
Document Type and Number:
Japanese Patent JP6080675
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a sealing device which can increase a discharge amount of a lubricant while suppressing the lowering of pressure in a sealing space.SOLUTION: In this sealing device A, a first discharge port 15 for discharging a lubricant in a sealing space S1 to the outside of the sealing space S1 is formed at a part of a circumferential direction between an annular part 12 and a circular part 22. The sealing device A comprises a closing part 15b at the first discharge port 15, and a slit 15c which is opened when applied with prescribed pressure is formed at the closing part 15b. Furthermore, a protrusion 13a which forms a second discharge port 16 for discharging the lubricant in the sealing space S1 between a first lip part 13 and a second lip part 14 is formed in a circumferential position of the first lip part 13 which corresponds to the first discharge port 15.
Inventors:
Masahide Sunagawa
Application Number:
JP2013093970A
Publication Date:
February 15, 2017
Filing Date:
April 26, 2013
Export Citation:
Assignee:
Koyo Sealing Techno Co., Ltd.
International Classes:
F16J15/3232; F16C19/26; F16C33/66; F16C33/78; F16J15/3212; F16J15/324; F16N7/32; F16N23/00; F16N31/00
Domestic Patent References:
| JP2003307275A | ||||
| JP2004028203A |
Attorney, Agent or Firm:
Patent Business Corporation Suncrest International Patent Office