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Title:
HYDRAULIC DEVICE AND WORKING MACHINE
Document Type and Number:
Japanese Patent JP2009270590
Kind Code:
A
Abstract:

To provide a hydraulic device enabling to remove air from operating oil and to recycle the jetted operating oil while preventing the worsening of working environment.

A breed screw 58 is threaded at one end to a screw hole portion 57. The breed screw 58 is loosened in the fastening condition of closing the screw hole portion 57 so that the operating oil is jetted via a hose connected to the other end of the breed screw 58 from the screw hole portion 57 together with air and collected into an operating oil tank. Thus, air can be removed from the operating oil and the operating oil be recycled while preventing the scattering of the jetted operating oil to prevent the worsening of working environment.


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Inventors:
MURATA TETSURO
KANEKO YOSHIFUMI
Application Number:
JP2008119182A
Publication Date:
November 19, 2009
Filing Date:
April 30, 2008
Export Citation:
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Assignee:
CATERPILLAR JAPAN LTD
International Classes:
F15B21/04; E02F9/00; F16K1/02; F16K24/04; F16L55/07
Attorney, Agent or Firm:
樺澤 襄
Satoshi Kabazawa
Tetsuya Yamada



 
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