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Patent Searching and Data


Title:
OIL SEAL
Document Type and Number:
WIPO Patent Application WO/2014/132674
Kind Code:
A1
Abstract:
A oil seal (10) is provided at a position on the outer periphery of a crankshaft (4) and seals two types of liquid, that is, lubricating oil and engine oil. The oil seal (10) is provided with: a first seal (11) which seals the flywheel side; a second seal (12) which seals the engine side; a pressure release hole (16) which is provided in either the first seal (11) and/or the second seal (12) and which connects a space (31) surrounded by the first seal (11), the second seal (12), and the crankshaft (4) to either the flywheel side or the engine side; and a partition lip (15) which is disposed between the first seal (11) and the second seal (12) and which divides the space (31).

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Inventors:
IWAKATA KEISAKU (JP)
Application Number:
PCT/JP2014/050042
Publication Date:
September 04, 2014
Filing Date:
January 07, 2014
Export Citation:
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Assignee:
KOMATSU MFG CO LTD (JP)
International Classes:
F01M11/00; F16J15/3228; F16J15/3232; F16J15/3244
Foreign References:
JPS546456U1979-01-17
JP2004156702A2004-06-03
GB2258275A1993-02-03
Attorney, Agent or Firm:
KINOSHITA & ASSOCIATES (JP)
Bottom intellectual property office of patent business corporation Tatsuyuki (JP)
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