Title:
Oil seal
Document Type and Number:
Japanese Patent JP6013230
Kind Code:
B2
Abstract:
An oil seal, which is provided on an outer circumference of a crankshaft to prevent leakage of two fluids such as a lubricating oil and an engine oil, includes: a first seal that seals a flywheel side; a second seal that seals an engine side; a pressure release hole provided to at least one of the first seal and the second seal so that a space surrounded by the first seal, the second seal and the crankshaft is in communication with one of the flywheel side and the engine side through the pressure release hole; and a partitioning lip provided between the first seal and the second seal to divide the space.
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Inventors:
Iwakata Keisei
Application Number:
JP2013037640A
Publication Date:
October 25, 2016
Filing Date:
February 27, 2013
Export Citation:
Assignee:
KOMATSU LTD.
International Classes:
F16J15/3232; F01M11/00; F16J15/3228; F16J15/3244
Domestic Patent References:
| JP54006456U | ||||
| JP2004156702A |
Foreign References:
| GB2258275A |
Attorney, Agent or Firm:
Intellectual Property Office
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